reaper crawler motor TUT
 

GHETTO CRAWLER MOTOR

difficulty 6/10


so here it is the one you have all been waiting for

parts needed:


gen1 servo
micro geared-motor GH810136V3 its the 100rpm one you want
http://www.gizmoszone.com
a yellow gen1 wheel bushing or grey evo gearbox bushing
any 130 size motor (stock ones are best)

tools needed:

small pliers
epoxy 2 part glue
superglue
dremel type tool


first job is to open up your stock 130 motor and remove the arm and magnets, then removed the wire coils and comm



next get your gen1 servo and take out the 7 screws holding it together
http://i233.photobucket.com/albums/e...s/DSC00125.jpg

this is what you should have
http://i233.photobucket.com/albums/e...s/DSC00126.jpg

the parts we need are these gears
http://i233.photobucket.com/albums/e...s/DSC00127.jpg

using your pliers take the gears off the shafts like this
http://i233.photobucket.com/albums/e...s/DSC00128.jpg

the gears we are going to use are these three (3) but save the yellow bit as this makes a good spacer for the motor cradle ;)
http://i233.photobucket.com/albums/e...s/DSC00129.jpg

take the gear on the right and push this onto your stripped out 130 arm like so (it will get positioned later)
http://i233.photobucket.com/albums/e...s/DSC00130.jpg

now the "pinion" is in 2 parts you will notice they lock together with teeth, all we need to do is glue them together till it looks like the one on the right
http://i233.photobucket.com/albums/e...s/DSC00131.jpg

now onto the motor case
take your dremel and start sanding this is something like you are looking for (stock on left)
http://i233.photobucket.com/albums/e...s/DSC00132.jpg
http://i233.photobucket.com/albums/e...s/DSC00133.jpg
http://i233.photobucket.com/albums/e...s/DSC00134.jpg
just keep trying your arm and gear until it spins without hitting anything :)

ok so that done take you 130 case and slide the arm into it until it hits onto the brass bushing , add a grey or yellow spacer
http://i233.photobucket.com/albums/e...s/DSC00135.jpg

now push on the end-bell and test for any binding and to see if the gear sits in the opening you have made (option of using superglue on shaft to gear)
http://i233.photobucket.com/albums/e...s/DSC00136.jpg

once that is done and all is smooth bend the tabs back to hold the end-bell on


next is the gear motor
http://i233.photobucket.com/albums/e...s/DSC00137.jpg

take the gear we made by gluing 2 together and push onto the geared motor with the small gear inward
http://i233.photobucket.com/albums/e...s/DSC00138.jpg

next is the most important bit mount the small motor on top of the dummy 130 and test for gear mesh
i found putting the small motor just off centre gave the best mesh
check check and check again then glue into place with superglue
check again !! if all is good use an epoxy to fill the gap where the motors meet
http://i233.photobucket.com/albums/e...s/DSC00140.jpg


now all that's left is to solder some wires on and make some spacers for the motor cradle (the yellow bit out of the servo works well :))

thanks all for watching and any comments or questions are happily accepted

Thanks for the awesome tutoral, Reaper! Very clear pictures and all the text is very descriptive and easy to follow! 10/10. In my opinion, this looks much cleaner than an HS servo mod.

Way to get an actual tut up about the motor. Looks very clean, and should be very helpful for a lot of people.

Where do you get the geared motor? D:

the link will follow
im in the middle of comming to a deal with the vendor so we can get them at a better price they are $23 with P&P at the moment :eyecraz:

23 DOLLARS FOR A MOTOR? I rather buy 7 sub-micro servo's and slam them in.

yes but that defies the point

the inspiration to this is the diymintuner drop in crawler motor and they sold at $40 ......as fast as they could be made

here is the link to the motors i used
this is the model you want GH810136V3

its the 100rpm one you want

and this is the site link
http://www.gizmoszone.com

please note the "L" version may run at 50 rpms but is also longer due to more gears that is why i recomend the 100rpm version still slow and powerfull and a better case (both have the same torque output )

THANK YOU! I was wondering where the link was, hmmmm 22.3oz-in of torque nice! thats a bit more than the HS-55 and spins a lot faster

sweeettt thank you so much reaper :)

Great tutorial. Now I can try to build me this motor.

is there a vid of it working somewhere to see how good it is?

http://www.marswell.com/8x10mm_video.html

that is a vid of just the small gearmotor working i will get one in a truck for you :)

Pretty badass setup, glad you were able to figure something out, even if a gen1 servo is sacrificed. I'd love to see some video.

thanks tex :)

the servo is not ideal imo but i wanted to make the motor easily accessible to all so this was the best way to do it i think

motor now available in there ebay store


http://cgi.ebay.co.uk/Mini-DC-Gear-M...item2a0501c84a

a short video on a stock chassis

http://i233.photobucket.com/albums/e...h_MOV00180.jpg

Hey reaper, i have a few gen 1 servos you can have if you would like them.
pm me your address if you want them and ill post them to you :)