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 DIY DP dolly copy 
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Joined: Sat Jun 05, 2010 7:09 am
Posts: 20
Location: Finland
Post DIY DP dolly copy
This is my copy of that Dynamic Perception dolly. DP's construction is genius, so I decide to make my own version. I couldn't find suitable 1"x3" profile here in Finland, so this is made 2"x2" (50mm x50mm) profile. Engine is 0.45rpm Dayton 12VDC gearmotor and 12 teeth pulley. First I have Canakit PWM speed contoller and LCD-display, but I want that DP's MX2 controller in the future. ;)


Just a quick video. Shake at the end of the TL is caused by me, take some videos and pictures...



Just remember - this is just a first test assembly! :roll:


Sun Aug 15, 2010 5:56 am
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Joined: Sat Jun 05, 2010 7:09 am
Posts: 20
Location: Finland
Post Re: DIY DP dolly copy
Few improvments and vertical test video:


Image
Simple method to change running direction, but I always have to remember disconnect power! :shock:
I need to add one more DC-connector for Canon power converter!
With that Canakit PWM-controller in 10% power it takes something like 3½-4 hour to travel all distance (profile is 1600mm and effective travel is 1360mm, ) and 100% power it takes 35-40 minutes.

Image

Image

Image



5 sec interval, 40% power (100Hz), 25fps


Tue Aug 17, 2010 3:38 am
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Post Re: DIY DP dolly copy
Pretty cool! I find it interesting how you went to the outside of the cart with the belt...

Also a bit humorous that your using a 50A PWM for a 100mA motor! :lol:


Tue Aug 17, 2010 5:02 am
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Joined: Sat Jun 05, 2010 7:09 am
Posts: 20
Location: Finland
Post Re: DIY DP dolly copy
Thanks! Hmmm, controller is little bit overkill! But I'm waiting that yours MX2-controller... ;)

This might intrest you:

Image

It's custom made 25T aluminium belt pulley. This is next major update after I first finish my five week holiday.
I need to do separate motor base plate (spring loaded or/and locking screw), so it's possible to move cart position simply and fast without taking belt off...
This might be also easy way to use profile extender, if you use glue or similar to attach belt inside the groove!


Tue Aug 17, 2010 5:29 am
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Post Re: DIY DP dolly copy
Very nice work! I like it, especially the new changes you're working on. Keep up the good work =)


!c


Tue Aug 17, 2010 8:15 am

Joined: Sat Dec 04, 2010 12:12 pm
Posts: 5
Post Re: DIY DP dolly copy
Juhal,

Where did you order the Dayton motor in Europe? I'm located in France and I can't find an online store selling these motors.

Thanks for the tip,

Arnaud


Wed Dec 29, 2010 9:08 pm
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Joined: Mon Oct 04, 2010 5:00 pm
Posts: 253
Post Re: DIY DP dolly copy
Is this able to stop it's self when it has reached the end or do you have to watch it?


Thu Dec 30, 2010 9:51 am
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Post Re: DIY DP dolly copy
aparis wrote:
Juhal,

Where did you order the Dayton motor in Europe? I'm located in France and I can't find an online store selling these motors.

Thanks for the tip,

Arnaud


Arnaud: http://www.grainger.com/Grainger/static/int_europe.html

(Grainger makes the Dayton motors)

!c


Wed Jan 26, 2011 5:52 pm
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Joined: Tue Jul 08, 2008 12:36 pm
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Location: Antarctica/California/New Zealand
Post Re: DIY DP dolly copy
JuhaL wrote:
This might intrest you:

Image


I like that idea very much. Having moving belts in the extreme cold here is the only thing holding me back on the DP design.
Doing it this way would mean only moving metal parts and bearings etc.
Would you still have reliable traction though? Any chance of jumping teeth under load?

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Wed Jan 26, 2011 6:58 pm
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Joined: Wed May 27, 2009 5:10 pm
Posts: 56
Post Re: DIY DP dolly copy
Would you mind sharing where did you got those parts? For example the belt, was it originally open-ended, or did you gut up an traditional timing belt?

Would be of some use, since I'm from Finland too ;)

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Wed Mar 02, 2011 5:31 pm
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