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-   -   BELT Drive Conversion - XTM Mammoth ST Pro (https://www.rc-monster.com/forum/showthread.php?t=20257)

MetalMan 05.05.2009 10:47 PM

Thanks! Just wait 'til you see the rest...

My original goal was a custom scratch-built buggy but this would be a very difficult feat. Integrating suspension and pulleys while maintaining belt clearance and keeping debris out are the primary goals for such a project, everything else is easy. I met it halfway by using the XTM front end and designing a new rear end based on the XTM parts.

BL_RV0 05.05.2009 11:26 PM

Oh how easy life would be with a plastic injection moulder. :angel:

What's_nitro? 05.05.2009 11:35 PM

Don't forget the 5-axis CNC mill to make the molds. :smile:

BL_RV0 05.06.2009 09:23 AM

...Or the lathe to turn custom turnbuckles!

MetalMan 05.06.2009 08:26 PM

Scratch-built doesn't mean the entire thing needs to be custom designed and built! I would simply use a proven suspension design off of another car and develop new parts around those suspension pieces, and integrate belt-drive stuff. Much easier that way :yes:.

BL_RV0 05.06.2009 08:35 PM

Yeah, I figure I'll use a-arms, shocks, wheel shafts, and steering parts off of a kit.

MetalMan 05.12.2009 05:08 PM

Finally, what many have been waiting for! It's still not done and has a fair bit more work required, but the rest is pretty easy and should go quick once I start. But much of the remainder is dependent upon the proper length front belt, which I just ordered and probably won't be here for another week... Anyways:

Lower belt guide:
http://img.photobucket.com/albums/v1...o/IMG_8166.jpg
http://img.photobucket.com/albums/v1...o/IMG_8170.jpg

Inside front diff case:
http://img.photobucket.com/albums/v1...o/IMG_8171.jpg

Upper belt guide:
http://img.photobucket.com/albums/v1...o/IMG_8176.jpg

Belt clearance with lower arm mount (note there is actually less clearance when the belt isn't lifted up):
http://img.photobucket.com/albums/v1...o/IMG_8178.jpg

Complete front end:
http://img.photobucket.com/albums/v1...o/IMG_8180.jpg

Belt protrusion below front bulkhead:
http://img.photobucket.com/albums/v1...o/IMG_8184.jpg

Mounted front end:
http://img.photobucket.com/albums/v1...o/IMG_8188.jpg

Rear end gear reduction:
http://img.photobucket.com/albums/v1...o/IMG_8191.jpg

Bottom of rear end (minus suspension plate):
http://img.photobucket.com/albums/v1...o/IMG_8201.jpg

MetalMan 05.12.2009 05:08 PM

Lower suspension mount:
http://img.photobucket.com/albums/v1...o/IMG_8202.jpg

Back of rear end showing sway bar mounting:
http://img.photobucket.com/albums/v1...o/IMG_8207.jpg

Front of rear end:
http://img.photobucket.com/albums/v1...o/IMG_8209.jpg

Bottom of rear end:
http://img.photobucket.com/albums/v1...o/IMG_8212.jpg

Rear end mounted:
http://img.photobucket.com/albums/v1...o/IMG_8216.jpg

Check out all those screws holding the rear end on! Normally only 4 screws have that job...
http://img.photobucket.com/albums/v1...o/IMG_8217.jpg

And of course the motor/reduction unit:
http://img.photobucket.com/albums/v1...o/IMG_8220.jpg

Positioning:
http://img.photobucket.com/albums/v1...o/IMG_8224.jpg
http://img.photobucket.com/albums/v1...o/IMG_8226.jpg

The pics of the center unit are older, it will actually have the polycarbonate mounting piece directly behind the motor (and the gear will be behind it) so that the entire unit will fit on the chassis.

ANGRY-ALIEN 05.12.2009 05:16 PM

:surprised: wow... That's quite a build man... I can't wait to see the completed thing. Please keep the pictures coming.

Alien

What's_nitro? 05.12.2009 06:45 PM

Amazing work. Can't wait to see it finished! :yes: :great:

big greg 05.12.2009 10:33 PM

sweet!

BP-Revo 05.12.2009 10:49 PM

I want to see that in person. Can I tempt you with a ride in a certain car? LOL

MetalMan 05.12.2009 11:35 PM

Quote:

Originally Posted by BP-Revo (Post 286704)
I want to see that in person. Can I tempt you with a ride in a certain car? LOL

When the time comes :wink: (wow that was awkward)

Joey 05.13.2009 03:57 AM

My God this is amazing work. This has got to go in the record book, folks... just.. wow! It all is put together to well, quite a feat in itself to make it look like it was made that way from the factory. Ingenious ideas here.

Semi Pro 05.13.2009 06:24 AM

wow, thats turning out to be very complex


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