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 Home made dolly 
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Joined: Sun Mar 18, 2012 4:07 am
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Location: Trieste, Italy
Post Home made dolly
Hello everyone!
After having read nearly every page possible on the forum about dollies, I've stared building mine...
Here is my newborn dolly.
I still need to build the motion system, but it's working out nicely... all made out of alu...
any suggestions?

what do you think of it?
Thank You

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Giorgio Benussi
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Wed May 02, 2012 11:06 am
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Joined: Wed Nov 11, 2009 10:45 am
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Location: Merritt Island, Florida, Estates Unitas
Post Re: Home made dolly
Very impressive. Thats a nice long track, and it all fits so nicely in that little black carry case. Did you machine the aluminum rods and other parts yourself? I'll be interested to see how it works with a motor. Have you recorded any video from a camcorder on the dolly while just moving it by hand? Are you planning to sell copies of this track? Its very nice to have a track which folds small, assembles long, and doesn't need additional tripods holding up the middle. With a reasonably sized DSLR on it, how long do you think the track can get before it needs a center support?


Wed May 02, 2012 11:48 am
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Post Re: Home made dolly
No the dolly is just for my sake...
yes the rails are made out of a 25x5 mm alu pipe, the screw were made by a friend with a lathe, just for precision.
In my projects i was intentioned to put two tripods at one third and at two thirds, but in construction it seems it can withstand much more weight...
i'll post more pics when i move on construction...
bey

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Giorgio Benussi
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Wed May 02, 2012 12:07 pm
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Location: MD, Baltimore
Post Re: Home made dolly
Great looking start. I'm curious to see how you work up the motor.

After dealing with my steel rails, I'm thinking more and more about switching to aluminum. The steel is just so heavy!


Thu May 10, 2012 10:32 am
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Post Re: Home made dolly
Hi you guys...

Nearly finished... just need to install the limit switches and paint the THING black... ;)
How does it look???

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Untitled

Now it should work!!!

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Giorgio Benussi
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Sat May 12, 2012 10:23 am
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Post Re: Home made dolly
Here are some detailed pics of my dolly
what do you think of it?

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Bottom View

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Limit Switch

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Limit Switch

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Top View

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Giorgio Benussi
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Sun May 13, 2012 10:20 am
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Location: Merritt Island, Florida, Estates Unitas
Post Re: Home made dolly
It looks beautiful. I don't see why everyone thinks they have to paint everything black. For some reason, I think bare metal looks cool, especially with machining marks on it. I have a hard time keeping guys at the shop from spending a ton of time making stuff look worse with this or that type of coating when the bare metal looks great.

You've come up with a very clever design. This isn't a criticism, just a comment which may be helpful. For unknown reasons, almost everyone who makes a dolly with "omega-drive" seems to box-in the motor pulley. It works OK with the original pulley. When you want to make it go faster for regular video, you need a bigger timing pulley in addition to a faster motor. There is plenty of space between your idlers and the motor pulley, which is good, but it looks like the motor pulley is too close to the side of the cart frame for a bigger pulley to fit.

Dynamic boxes-in their motor-pulley by placing the idlers too close to it.


Sun May 13, 2012 12:56 pm
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Post Re: Home made dolly
Quote:
I have a hard time keeping guys at the shop from spending a ton of time making stuff look worse with this or that type of coating when the bare metal looks great.
:lol: :lol: :lol:
I have a similar problem... my welders aren't good enough, and so the try to paint over their bad work, but they paint even worse... :) :) :)

i though of painting it black because alu tends to leave on your hands a grey powder like oxidation. to prevent that i thought of painting it...

for the pulley problem i got an idea... i will work on that...

thanks

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Giorgio Benussi
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Sun May 13, 2012 1:20 pm
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Post Re: Home made dolly
One reason photographic and cinematographic equipment is painted black is to reduce the likelihood of the equipment of throwing highlight reflections or being seen in reflections while in use. Black color wasn't a fashion statement, it was a practical way of reducing artifacts from the equipment.


Mon May 14, 2012 9:41 am
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Post Re: Home made dolly
here are some new pics from my first field trip... :D

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Giorgio Benussi
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Sun Jul 01, 2012 1:36 pm
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Post Re: Home made dolly
Robwhite wrote:
One reason photographic and cinematographic equipment is painted black is to reduce the likelihood of the equipment of throwing highlight reflections or being seen in reflections while in use. Black color wasn't a fashion statement, it was a practical way of reducing artifacts from the equipment.


For gear being used outside in the sun black paint works against you. It can get so hot you can't handle it. I work in the movie business and we had black stands for about 5 minutes. They work great in the studio but on location in the sun was unworkable.

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Sun Jul 01, 2012 2:39 pm
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Post Re: Home made dolly
I like your design, Giorgio! I especially like the way it disassembles. How well has it been working for you? Have you had problems with smoothness over the joints in the rods? :)


Fri Aug 03, 2012 8:06 am
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Post Re: Home made dolly
yes it disassembles very easely... i shaped the alluminum by hand and had no jumps...

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Giorgio Benussi
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Fri Aug 03, 2012 1:43 pm
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Post Re: Home made dolly
Really cool design! Nice work!

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Fri Aug 03, 2012 2:21 pm
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Post Re: Home made dolly
some new pics...

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Giorgio Benussi
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Sat Aug 04, 2012 9:21 am
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Post EMOTIMO TB3 EVOLUTION
Here are some pics of my diy dolly with a new geared stepper motor and beautiful Emotimo TB3...

Pics

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Giorgio Benussi
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Fri Oct 19, 2012 10:08 am
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Location: Merritt Island, Florida, Estates Unitas
Post Re: Home made dolly
Very nice! Thats a huge step up in terms of controllability using stepper motors. The TB-3 is a nice platform for pan-tilt-dolly rigs. Brian has worked out a way to run a fourth stepper using the TRS plug (the aux jack). You need a driver, but the TB-3 can send step and direction signals through the aux jack if you want to run Dragonframe controlling four axes.


Fri Oct 19, 2012 12:08 pm
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Post Re: Home made dolly
Yeah Brian has done a great job all the way... The TB-3 is just much more than i expected... The firmware is so simple but very effective... love the wireless joystick.....!!! ;)

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Fri Oct 19, 2012 1:15 pm
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Post Re: Home made dolly
that looks really cool, where did you get the hardware - wheels etc?

Thanks!


Mon Nov 19, 2012 4:44 am
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Post Re: Home made dolly
dtokez wrote:
that looks really cool, where did you get the hardware - wheels etc?

Thanks!



Nice work! I would also like to know where you got those wheels from.

Have you considered anodizing your parts? way more durable than paint.


Mon Nov 19, 2012 5:33 pm
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Post Re: Home made dolly
I have been speaking with Cambogia84 and he made the wheels by milling plastic stock.
Taking his advice I also had some made as I am building a similar design to his but using carbon fibre, you can see the sample carbon fibre rod in the photo's with the wheels I had made.
I wanted to modify the wheel design so there is no issue with the dolly inverted, as you can see the wheel extends beyond the radius of the tube.
Wheels 60mm diameter nylon (oil impregnated), the concave diameter is 25mm and 20mm deep.
Carbon fibre is 25mm OD with 2.5mm walls, stiff as a brick and weigh 190 gramms per meter.


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Mon Nov 19, 2012 8:58 pm
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Post Re: Home made dolly
colinh wrote:
I have been speaking with Cambogia84 and he made the wheels by milling plastic stock.
Taking his advice I also had some made as I am building a similar design to his but using carbon fibre, you can see the sample carbon fibre rod in the photo's with the wheels I had made.
I wanted to modify the wheel design so there is no issue with the dolly inverted, as you can see the wheel extends beyond the radius of the tube.
Wheels 60mm diameter nylon (oil impregnated), the concave diameter is 25mm and 20mm deep.
Carbon fibre is 25mm OD with 2.5mm walls, stiff as a brick and weigh 190 gramms per meter.



Thanks for the info!

yours look good too! I wish the carbon fiber tubes didn't cost so much, they sure are nice.


Mon Nov 19, 2012 9:54 pm
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Post Re: Home made dolly
Yeah the wheels is the tricky bit... I first tried to mill them myself but with a very bad result... :? They must be really precise... :!: So i had to get them milled by a local workshop out of row Acetal Resin (DELRIN)...
By the way my dolly work flawlessly upsidedown.. the wheels are carved enough...

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Giorgio Benussi
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Thu Nov 22, 2012 2:10 pm
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Post Re: Home made dolly
Some new pics of a lightweight mod of the tb3...
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Giorgio Benussi
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Tue Feb 12, 2013 2:16 pm
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Post Re: Home made dolly
Wow I'm tuning in to this thread a little late but nice work! How much does it weigh? It looks really sturdy, thanks for sharing


Tue Feb 12, 2013 6:16 pm
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Post Re: Home made dolly
The whole thing is very heavy.. The pipes, the connection parts, the cart, the tb3 and some li-ion batteries, will be around 20kg more or less... I'm trying to find some lighter pipes in ergal or airplane alu...

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Giorgio Benussi
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Wed Feb 13, 2013 10:33 am
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Post Re: Home made dolly
Hi,

I am thinking to built my won dolly just like you.
Will u share the details for construction of your dolly and motor in details?????
Here is my email- akulavmode@gmail.com
and please send detailed information.


Thanks,
Amol


Tue Feb 04, 2014 3:02 am
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Post Re: Home made dolly
dear Amol,

this is a forum all the info is shared here - do a little bit of research, ask pertinent question rather than asking others to email you details privately, that sort of defeats the purpose of this forum.

tim t

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Tue Feb 04, 2014 12:36 pm
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Post Re: Home made dolly
all the info i needed , i found on this great forum... check it out....or ask me on this post...

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Giorgio Benussi
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Wed Feb 05, 2014 2:34 pm
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Post Re: Home made dolly
Thanks for your suggestion.
I tried to get information on the forum but there so many posts and couldn't get precise information.

If you know good posts on the forum then please share it.

Amol


Thu Feb 06, 2014 12:40 am
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