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 "intermediate" dolly - parts shopping list 
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Joined: Sat Mar 06, 2010 7:14 pm
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Post "intermediate" dolly - parts shopping list
I am in the process of building a dolly very similar to tom's intermediate dolly. The only real difference will be that mine will use a belt system "omega drive" that can be see in this post viewtopic.php?f=31&t=1511&hilit=omega (thanks xlntpix).

Here is the list of stuff i purchased for the build. its ending up to be alot more then i expected, but whatever. Hope this list helps somebody. if you have any questions let me know. All of the place i bought from have been awesome to deal with! No problems at all. I will post some pics once i put this thing together.



MollyMFG (http://www.mollymanufacturing.com/)
===================================================

4x 2nd Gen 360 Swivel Wheels: http://www.mollymanufacturing.com/360_Swivel_wheels.php

*Note*: These things are great because the are all bolted together and can be completely disassembled. I took the swivel part off mine so i can just use triangle part the wheels are bolted on. I did this mostly for weight. There is no need for that extra swivel part, and taking it off shaved a ton of weight off these suckers. There are holes at the point of the triangle part for bolts. Going to just use those to bolt to my dolly car.

SDP-SI (http://www.sdp-si.com/estore)
===================================================

Small Pulley (used as idler): 2x 20 tooth pulleyhttps://sdp-si.com/eStore/PartDet ... roupID=218
Main Pulley: 1x 48 tooth pulley https://sdp-si.com/eStore/PartDetail.as ... roupID=218 or 1x 36 tooth pulley https://sdp-si.com/eStore/PartDetail.as ... roupID=218[/list]

PolyBelt (polybelt.com)
===================================================

Open End Belt: 12' of XL037 Poly/Steel Belt Roll Open End 3/8" (http://shop.polybelt.com/L037-Poly-Stee ... 37-MPS.htm)
Belt End Clamp: 2x 3/8 1/5 pitch clamp http://shop.polybelt.com/L037-Belt-Clam ... CL037A.htm

CastleStudios (http://www.castlestudios.com)
===================================================

Trilite 109 Truss: 2x Opti 109-L4 Ladder Truss (4ʼ)
End Plates: 2x Opti 109-BP2 End Plates

*Note*: Email Jon to order jon@castlestudios.com

ServoCity (http://www.servocity.com/)
===================================================

Gearmotor Gearbox: 1x http://www.servocity.com/html/gearmotor_gearbox.html
Dual Manual Servo Driver: 1x http://www.servocity.com/html/dual_servo_driver.html
Precision Digital Speed Control: 1x http://www.servocity.com/html/precision ... ontro.html
1 RPM Gearmotor: 1x http://www.servocity.com/html/1_rpm_gear_motor.html

Industrial Metal Supply(http://www.industrialmetalsupply.com/)
===================================================

Various Aluminum Parts I am lucky to have one of their retail stores near me. Its like a dolly builders dream! They have all kinds of different metals in thousands of shapes and sizes. They will cut your stuff for you to whatever sizes you want. I got most of the aluminum for the dolly car from the remnants they have in the warehouse, and had them but it to the sizes i needed. I also got a couple stock things as well. While I was there i saw they has a ton of different types of aluminum tubes that could be used for track. They had this super cool, super light (but strong) Anodized Aluminum tubes in different colors. They seemed perfect for anyone wanting to make some track. Anyways... Here is what i got from them, most is 6061 t6 aluminum 3/16th thick.

Dolly Car Top: 1x 12.5" x 14"
Dolly Car Sides: 2x 5.5" x 14"
Tripod Mounts: 2x 4" x 12"
Belt Mounts: 2x 2" x 12"
Corner Supports: 4x 2" x 2" (approx) squares.
Idler Pulley Pols: 12" 3/8" hobby type aluminum tube

You may be able to call them and purchase what you need over the phone and have it shipped.


BUILD NOTES:
===================================================

I built this thing in my apartment with simple tools and supplies. I got all my supplies and welding done on a saturday and built it on sunday, so 2 days max. Im not a machinist, engineer, don't have a ton of tools, no workshop, or anything like that, so really anybody can do it.

Cart Dimensions: 12.5" wide (from rail to rail) 14" long. Sides are 5.5" tall. The width needs to be exactly 12.5" for my setup so that the wheels ride perfectly on the track. The sides were attached on the outside of the top plate to maintain the 12.5" width. This worked perfectly and the car rides super smooth on the tracks. Remember though, i took apart my wheels from MollyMfg so that i only had the triangluar piece.
Vertical Belt Mounts: These are made of the 2"x12" bars. I got some hand screw knobs so it would be quick to take apart for smaller storage. Im glad i made these removable. The belt clamps from polybelt are great and work perfectly! I drilled some holes to mount them to the bars and used some small bolts to hold them down. The bolds are about 1/4" longer then they needed to be so that i could just unscrew them without taking the whole clamp off to adjust the belt tension.
Corner Supports: These are the 4 things at the corners of the car used for support. I almost didn't get these, but im glad i did. The welder said that they are perfect because it meant alot less welding needed to be done. So get some of these!
Tripod Mounts: These are the 4"x12" bars. I drilled various holes in them so i could position the tripod in different places if need be. The quick release plate is bolted to the mounts, and the quick release clamp remains on the tripod head.
Idler Pulley Polls: These are the things that hold up the 2 smaller pulleys. Its made from some simple hobby type 3/8" tube to match the bore size on the pulley. I had to file these down little to fit inside the bore (even though both are 3/8"). I got some small flange type things, i think they were called T-NUTs that would fit into the 3/8" tube to give it a little wider base. I flattened out the pointy things to make it cleaner. Since the T-NUTs have threads, i drilled some holes in the top plate of the car, and got some finger screws to attach them tightly to the car.
Servo City Stuff: The gearmotor gearbox was bolted down with some small bolts, and the speed control and driver are attached with velcro.


Thats about it. Post any questions you have.

NOW FOR THE PICS:
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Mon Mar 22, 2010 1:02 pm
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Post Re: "intermediate" dolly - parts shopping list
Thanks for posting this. Remember to keep the dolly "car" as light as possible. You don't need all that welding like my car, which is built like a tank. Try to keep the car as light as is humanly possible. In the future I would suggest v-grove wheels instead of Molly.

Another thing that needs to get figured out is some kind of way to know what "speed" the motor is running at. Right now it's just a little knob, with no speed indicator whatsoever. Each time you turn the knob, you really have no way of knowing what speed the motor is turning at. Consequently, it is difficult to know how long it will take for the night timelapse move to run from one end of the track to the other. Also, it would be very difficult to match a "back pan" on a pan head. We need to talk to Servo City and have them make a speed indicator of some kind, preferably a digital LCD readout.


Mon Mar 22, 2010 1:35 pm
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Post Re: "intermediate" dolly - parts shopping list
The molly wheels were great because i could take them apart to make them lighter, only thing i was not that i didnt like was that the wheels did not roll that smoothly. im sure they would be fine just as they came, but i wanted them to spin as easy as possible. i took the wheels off, took off a washer used as a spacer, and replaced it with the little spaces that come with skateboard trucks. I also had a couple extra skateboards laying around which had super smooth and fast bearings, so i also replaced the bearings (just for the hell of it). they spin MUCH better now! Why do you suggest the v-grove (just curious).

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Mon Mar 22, 2010 1:41 pm
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Post Re: "intermediate" dolly - parts shopping list
After trawling the net I have only found industrial heavy duty V-grooved metal wheels.
Anybody know where to get a lighter alternative?

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Mon Mar 22, 2010 4:44 pm
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Post Re: "intermediate" dolly - parts shopping list
peppino wrote:
. its ending up to be alot more then i expected, but whatever.


that would be? ;)

unozig wrote:
After trawling the net I have only found industrial heavy duty V-grooved metal wheels.
Anybody know where to get a lighter alternative?


the kicker with the v-wheels is the track... the wheels can be found quite small and 'relitively' cheaply but the track is heavy and $$. I was attracted to this for a while: http://www.pacific-bearing.com/SnapInClamp.aspx have no idea how much it may run though.


Mon Mar 22, 2010 5:39 pm
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Post Re: "intermediate" dolly - parts shopping list
unozig wrote:
After trawling the net I have only found industrial heavy duty V-grooved metal wheels.
Anybody know where to get a lighter alternative?


the kicker with the v-wheels is the track... the wheels can be found quite small and 'relitively' cheaply but the track is heavy and $$. I was attracted to this for a while: http://www.pacific-bearing.com/SnapInClamp.aspx have no idea how much it may run though.[/quote]

No problems with the track as you could use a tube besides angle iron.
So do you have a url for the wheels?

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Mon Mar 22, 2010 6:46 pm
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Post Re: "intermediate" dolly - parts shopping list
unozig wrote:
No problems with the track as you could use a tube besides angle iron.
So do you have a url for the wheels?


what size 'tube' we talking about here?


Mon Mar 22, 2010 6:50 pm
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Post Re: "intermediate" dolly - parts shopping list
milapse wrote:
unozig wrote:
No problems with the track as you could use a tube besides angle iron.
So do you have a url for the wheels?


what size 'tube' we talking about here?


1" if I can get away with it else 2"

Also looking for 4" pulley wheel to fit a 3/8" shaft for my arriving Servocity gear box motor.

All our stuff down under is all metric now :cry:

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Mon Mar 22, 2010 7:49 pm
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Post Re: "intermediate" dolly - parts shopping list
unozig wrote:
1" if I can get away with it else 2" :


I thought that's what you were talking about... all the v-wheels I know of are VERY SMALL. Your looking for something industrial size there!


Mon Mar 22, 2010 8:19 pm
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Post Re: "intermediate" dolly - parts shopping list
milapse wrote:
unozig wrote:
1" if I can get away with it else 2" :


I thought that's what you were talking about... all the v-wheels I know of are VERY SMALL. Your looking for something industrial size there!


Yes that's what I said earlier BUT not specification wise.

All I find is cast iron, stainless steel and Aluminium ones, any plastic/nylon ones about?

What size are you talking about? 2"? as that would do for the 4 dolly wheels but not the 1 "pulley wheel"

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Mon Mar 22, 2010 8:30 pm
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Post Re: "intermediate" dolly - parts shopping list
peppino wrote:
===================================================[/b]
Trilite 109 Truss: 2x Opti 109-L4 Ladder Truss (4ʼ)
End Plates: 2x Opti 109-BP2 End Plates

*Note*: Email Jon to order jon@castlestudios.com



Im building a similar setup, but there was a post about the truss' being too flexible. I went to Home Depot and found some square aluminum tubing. this stuff is super light weight, really strong (no bend), and relatively affordable. how much was the 4' truss sections? What's the weight on those too? I'll be lugging my gear into the woods and up mountains, so weight is a factor for me.

Thanks!
~Dean


Tue Mar 23, 2010 5:48 am
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Post Re: "intermediate" dolly - parts shopping list
The square tubing turned at a diamond angle is strong as hell. No flexing. I love it.


Tue Mar 23, 2010 7:33 am
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Post Re: "intermediate" dolly - parts shopping list
Thanks dustin! i updated the post.

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Thu Mar 25, 2010 10:24 pm
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Post Re: "intermediate" dolly - parts shopping list
apogeecs wrote:
peppino wrote:
===================================================[/b]
Trilite 109 Truss: 2x Opti 109-L4 Ladder Truss (4ʼ)
End Plates: 2x Opti 109-BP2 End Plates

*Note*: Email Jon to order jon@castlestudios.com



Im building a similar setup, but there was a post about the truss' being too flexible. I went to Home Depot and found some square aluminum tubing. this stuff is super light weight, really strong (no bend), and relatively affordable. how much was the 4' truss sections? What's the weight on those too? I'll be lugging my gear into the woods and up mountains, so weight is a factor for me.

Thanks!
~Dean


apogeecs,
The truss was $86usd for each 4 foot section. I purchased the end plates as well and those were $46 each i think. The truss is really really light. i have not built my dolly car yet so i cant tell you how well it holds up to weight, but i am going to build it as light as possible. If flexing really becomes an issue i have a few very simple fixes i could implement without adding much of anything to the total weight of the truss. i think i'll be fine though. I'll keep you all posted as i build ( have not started yet).

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Thu Mar 25, 2010 10:31 pm
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Post Re: "intermediate" dolly - parts shopping list
peppino wrote:
ServoCity (http://www.servocity.com/)
===================================================

Gearmotor Gearbox: 1x http://www.servocity.com/html/gearmotor_gearbox.html
Dual Manual Servo Driver: 1x http://www.servocity.com/html/dual_servo_driver.html
Precision Digital Speed Control: 1x http://www.servocity.com/html/precision ... ontro.html
1 RPM Gearmotor: 1x http://www.servocity.com/html/1_rpm_gear_motor.html


That's what I ordered and it's on it's way down under, cant wait :-)

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Thu Mar 25, 2010 10:35 pm
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Post Re: "intermediate" dolly - parts shopping list
That's a very wise safety feature, will look into it.
For the spooling I think I'll go with a cable and get a 2" pulley with the 3/8 bore via brother in Oregon.
I think the cambelt would be more secure but I'd hate to locate a sprocket set from the USA.
Unfortunately we have gone all metric down under :-(

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Thu Mar 25, 2010 11:50 pm
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Post Re: "intermediate" dolly - parts shopping list
I have had a change of plans(i think). I dont think i am going to use the "omega drive" anymore. Reason being is that i want to remove as much weight (a heavy battery and all the servo city stuff) as possible from the dolly cart. What i think im going to do is build a little tray at the very end of the truss and put everything there, and then just attach some string, cable, or line to the cart and have the motor just pull it along the track like reeling in a fishing line type thing. i'll setup the truss on a slight angle to keep some tension on the line. this way my cart will be as light as possible and i can have all my motor controls off the cart. Thats my plan as of now, things might change though and i may switch back to the belt drive if weight is not an issue. Will keep you all posted.

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Fri Mar 26, 2010 8:22 am
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Post Re: "intermediate" dolly - parts shopping list
peppino wrote:
I have had a change of plans(i think). I dont think i am going to use the "omega drive" anymore. Reason being is that i want to remove as much weight (a heavy battery and all the servo city stuff) as possible from the dolly cart. What i think im going to do is build a little tray at the very end of the truss and put everything there, and then just attach some string, cable, or line to the cart and have the motor just pull it along the track like reeling in a fishing line type thing. i'll setup the truss on a slight angle to keep some tension on the line. this way my cart will be as light as possible and i can have all my motor controls off the cart. Thats my plan as of now, things might change though and i may switch back to the belt drive if weight is not an issue. Will keep you all posted.


Bad idea:

As a string wraps around a drum of some sort (like in fishing reel), the length of line wrapped each time increases as more string wraps on it. (That is, the drum diameter is the combined size: D+Wd, where D is the diameter of the drum, W is the number of wraps on the drum and d is the diameter of the line you're using.) This means that the speed that line is retrieved increases as more line builds up on the drum. (The diameter of the drum increases, but your RPMs stay consistent.) You can look at it this way: a winch and fishing reel both operate more efficiently (more line reeled with less revolutions) when several wraps exist on the drum.

If you're going to do this, you should either guarantee that you never have more than one wrap on the drum, or better yet you should capture both ends of the string (like you would with the omega belt), and make one-two wraps around your pulley, such that the pulley crawls down the string, and does not pick up the string. Otherwise, the longer your system runs the faster it will run.

Additionally, having extra weight on the cart generally increases stability. May not be such a bad thing =(

!c


Fri Mar 26, 2010 12:37 pm

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Post Re: "intermediate" dolly - parts shopping list
shutterdrone,
brilliant, thanks! I never really thought about that. ok im going to get my cart build and then stay playing around and laying things out before i nail my system down. thanks!!

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Fri Mar 26, 2010 1:37 pm
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Post Re: "intermediate" dolly - parts shopping list
dustin wrote:
timescapes wrote:
Another thing that needs to get figured out is some kind of way to know what "speed" the motor is running at. Right now it's just a little knob, with no speed indicator whatsoever. Each time you turn the knob, you really have no way of knowing what speed the motor is turning at. Consequently, it is difficult to know how long it will take for the night timelapse move to run from one end of the track to the other. Also, it would be very difficult to match a "back pan" on a pan head. We need to talk to Servo City and have them make a speed indicator of some kind, preferably a digital LCD readout.


Amen!! That damn speed dial has F'ed me on more than a few occasions. I usually just error on the side of too slow. I have been trying to figure out a way to make those dials click into positions. Any ideas?


Dustin can you please call Servo City, talk to Kyle, and try to figure out some kind of speed indicator for these gear motors? I would do it, but don't have time nor a phone line to do it. We need SOME kind of ballpark idea how fast these motors are turning. Maybe a voltage meter between the speed controller and motor?

thanks man.


Sat Mar 27, 2010 12:13 pm
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Post Re: "intermediate" dolly - parts shopping list
I have not fired up and used the motors yet, but i can already see how those dials might be a pain!

Got my dolly car (cart?...whatever) all welded up today. Its actually pretty light and im not that concerned about the tracks bending. Also got the tripod supports welded to the truss. Spent 2 hours in the hardware store picking out nuts, bolts, knobs, and various other things. There's alot of stuff to be assembled. Anyways, i'll take some photos in the morning and also update the parts shopping list so you all know what i got.

Tom, sounds like you are having a ton of fun out there shooting!! Can't wait for the film!

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Sat Mar 27, 2010 8:33 pm
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Post Re: "intermediate" dolly - parts shopping list
timescapes wrote:
Another thing that needs to get figured out is some kind of way to know what "speed" the motor is running at. Right now it's just a little knob, with no speed indicator whatsoever. Each time you turn the knob, you really have no way of knowing what speed the motor is turning at. Consequently, it is difficult to know how long it will take for the night timelapse move to run from one end of the track to the other. Also, it would be very difficult to match a "back pan" on a pan head. We need to talk to Servo City and have them make a speed indicator of some kind, preferably a digital LCD readout.


Having not seen the part you are talking about, I'm guessing it is just a standard potentiometer?
An easy way to get a reliable result would be to figure out the correct resistance for the common speeds you want, then just wire in a series of resistors to switch to using a rotary switch instead of the dial.
Probably only looking at a few dollars in parts.
Also you can buy multi-turn pots with numbered readings on the front, ie about 10 full turns from start to finish.

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Sat Mar 27, 2010 11:25 pm
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Post Re: "intermediate" dolly - parts shopping list
Hey guys, i updated my original post with some more info and pics. Build is done, now i just need to get outside and use it!

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Mon Mar 29, 2010 12:59 pm
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Post Re: "intermediate" dolly - parts shopping list
dustin wrote:
Quote:
Dustin can you please call Servo City, talk to Kyle, and try to figure out some kind of speed indicator for these gear motors? I would do it, but don't have time nor a phone line to do it. We need SOME kind of ballpark idea how fast these motors are turning. Maybe a voltage meter between the speed controller and motor?


All that Kyle could offer up is the volt meter idea as well. He told me what needed to be done to hard wire one to the servo driver. Is there such a thing as a mini/cheap volt meter?

edit: Google says 'yes'

http://www.amazon.com/s/?ie=UTF8&keywords=mini+multimeter&tag=googhydr-20&index=aps&hvadid=4307566397&ref=pd_sl_2zm8vtizqc_b


So you would just wire one of the meters to the servo driver and use the reading on the meter as basically a reference for the speed? Seems like a decent idea. I was thinking about doing various speed tests and marking the various speeds (maybe time to travel 1 foot) around the dial and then rigging a little pointer arm onto the knob. seems easy enough and accurate enough.

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Tue Mar 30, 2010 8:52 pm
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Post Re: "intermediate" dolly - parts shopping list
Can Kyle/Servo City make something for us?


Wed Mar 31, 2010 8:49 pm
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Post Re: "intermediate" dolly - parts shopping list
Does anyone have an actual full circuit diagram they could post for us to have a look at for them?

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Thu Apr 01, 2010 12:16 am
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Post Re: "intermediate" dolly - parts shopping list
Why not get rid of the POT altogether?

If it's running at 5V or 3.3V logic, and little load is on the POT (as it should be), you could replace the POT with a small uC (something like the pro mini, or any basic stamp, etc.) and a series of LEDs. Your knob adjusts an analog out pin (varying the voltage, much like a POT), and as you adjust the knob you have a clear indicator of what your real speed is via the line of LEDs. If you want to get cooler, just add a cheap LCD and display the actual percentage, and use a simple function to convert percent of speed to real speed based on total speed.

I had designed something similar as a pressure control system for a cappuccino station for a friend. Just a big knob and an LCD that shows bars as percentage of total pressure - this ran a PWM line to the coil on an AC relay. Instant pressure control through motor speed control (in this case, using a relay to act as a low-speed AC PWM controller).

!c


Thu Apr 01, 2010 10:17 am
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Post Re: "intermediate" dolly - parts shopping list
dustin wrote:
All that Kyle could offer up is the volt meter idea as well. He told me what needed to be done to hard wire one to the servo driver.


Where on the servo driver do you hard wire the +ve and -ve leads from the multimeter? :oops:

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Mon Apr 05, 2010 10:59 pm
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Post Re: "intermediate" dolly - parts shopping list
dustin wrote:
After realizing that, I wired the multimeter to the leads just before the motor :? :lol: . Duh!!


So where do you exactly wire them? +ve and -ve either side of the motor?

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Mon Apr 05, 2010 11:51 pm
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Post Re: "intermediate" dolly - parts shopping list
Thanks for that, so it's either side of the motor to see the voltage drop. :-)

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Tue Apr 06, 2010 1:53 am
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Post Re: "intermediate" dolly - parts shopping list
Since you're discussing accurate speed control, I was wondering if anyone had replaced the manual servo control with Servocity's computer-controlled version. Obviously it would require a netbook or something like that, but might allow for a more accurate control of speed plus repeatable moves (e.g. ramps) stored as a file.

http://servocity.com/html/servo_controllers.html

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Tue Apr 06, 2010 8:08 am
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Post Re: "intermediate" dolly - parts shopping list
That could be interesting if it worked. Who's going to try it?

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Tue Apr 06, 2010 1:38 pm
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Post Re: "intermediate" dolly - parts shopping list
Software features at http://servocity.com/html/8-scb_software.html

You can definitely repeat moves by saving then on a PC and reloading them in the future.

However I don't see anyway you can 'ramp' a move. :cry:

Works with all Windows 95, 98 2000 and XP systems. So no netbooks there!

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Tue Apr 06, 2010 1:48 pm
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Post Re: "intermediate" dolly - parts shopping list
Man, that servo city speed controller is expensive.

I wonder why you couldn't do this, and get the same function? Seems like it would be cheaper, and does pretty much the same thing.

http://www.virtualvillage.com/reversibl ... 1-063.html


!c


Tue Apr 06, 2010 6:19 pm
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Post Re: "intermediate" dolly - parts shopping list
would a pocket pc work?


Wed Apr 07, 2010 12:15 am
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Post Re: "intermediate" dolly - parts shopping list
Thanks for posting this info.
I wondered if you could confirm the part numbers for the small pulleys, the link doesn't seem to work. Thanks

Best
David

SDP-SI (http://www.sdp-si.com/estore)
===================================================
Small Pulley (used as idler): 2x 20 tooth pulleyhttps://sdp-si.com/eStore/PartDet ... roupID=218
Main Pulley: 1x 48 tooth pulley https://sdp-si.com/eStore/PartDetail.as ... roupID=218 or 1x 36 tooth pulley https://sdp-si.com/eStore/PartDetail.as ... roupID=218[/list]


Sun Aug 29, 2010 5:24 am
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Post Re: "intermediate" dolly - parts shopping list
unozig wrote:
Software features at http://servocity.com/html/8-scb_software.html

You can definitely repeat moves by saving then on a PC and reloading them in the future.

However I don't see anyway you can 'ramp' a move. :cry:

Works with all Windows 95, 98 2000 and XP systems. So no netbooks there!


Why not netbooks? My Samsung NC-10 was originally Vista (shudder) but I just reformatted the drive and installed XP on it.

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Sun Aug 29, 2010 6:19 am
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Post Re: "intermediate" dolly - parts shopping list
Let me check it out for you. I'll try to post another link for them.

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Sun Aug 29, 2010 8:17 am
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Post Re: "intermediate" dolly - parts shopping list
Photosbykev wrote:
unozig wrote:
Software features at http://servocity.com/html/8-scb_software.html

You can definitely repeat moves by saving then on a PC and reloading them in the future.

However I don't see anyway you can 'ramp' a move. :cry:

Works with all Windows 95, 98 2000 and XP systems. So no netbooks there!


Why not netbooks? My Samsung NC-10 was originally Vista (shudder) but I just reformatted the drive and installed XP on it.


Didnt have a copy of XP on CD just a partition on my hard drive with a factory image of the OS.

Fast forward to last month and got a new netbook by Acer "eMachines" which comes with 160Gb HD, N450 Atom (3rd gen chip) and XP !! to keep the price down below $300 :-)

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Mon Aug 30, 2010 12:27 am
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Post Re: "intermediate" dolly - parts shopping list
David Wright wrote:
Thanks for posting this info.
I wondered if you could confirm the part numbers for the small pulleys, the link doesn't seem to work. Thanks

Best
David

SDP-SI (http://www.sdp-si.com/estore)
===================================================
Small Pulley (used as idler): 2x 20 tooth pulleyhttps://sdp-si.com/eStore/PartDet ... roupID=218
Main Pulley: 1x 48 tooth pulley https://sdp-si.com/eStore/PartDetail.as ... roupID=218 or 1x 36 tooth pulley https://sdp-si.com/eStore/PartDetail.as ... roupID=218[/list]


here are the part numbers from my order confirmation email
A 6Z 3-20DF03712 2 $6.42/Each $12.84
A 6Z 3-48DF03712 1 $11.26/Each $11.26
A 6Z 3-37DF03712 1 $9.62/Each $9.62

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