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Old 02-02-2013, 08:57 PM   #1
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Questions?? HPI Sprint 2 slipper clutch conversion

I would like to put a slipper clutch or slipper spur gear on my direct drive Sprint 2. When a pebble gets stuck in the transmission, I don't want it to harm the motor. Can anyone help me convert my sprint 2 from direct drive to slipper clutch or slipper spur gear?
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Old 02-02-2013, 09:20 PM   #2
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Quote:
Originally Posted by vxlmaster821 View Post
I would like to put a slipper clutch or slipper spur gear on my direct drive Sprint 2. When a pebble gets stuck in the transmission, I don't want it to harm the motor. Can anyone help me convert my sprint 2 from direct drive to slipper clutch or slipper spur gear?
I have never seen a direct drive HPI Sprint 2...

Got any pictures?
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Old 02-03-2013, 09:24 AM   #3
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Hmmmmm... Maybe I have my rc terms mixed up.
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Old 02-03-2013, 09:25 AM   #4
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Old 02-03-2013, 11:22 AM   #5
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A direct drive would be something along the lines of what the Bolink Legends and the RJ Speed Legends use =



Not sure, but I think it's called a ball diff...

http://www.rjspeed.com/rjspeed/2010ex.pdf

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Old 02-03-2013, 11:28 AM   #6
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Easiest way to keep pebbles out is:

A) Only drive on indoor tracks
B) Use a leaf blower & clear the area where you are going to play
C) Use a school tennis court that's been recently resurfaced but use the leaf blower also...

Out by where I live the shit heads tagged one HS tennis court so all in the area are now under lock & key so no one can use them...

OR you can...




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Old 02-03-2013, 08:34 PM   #7
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I plan to go rally driving.
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Old 02-03-2013, 08:36 PM   #8
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Pebbles in the belt are nearly unavoidable with basically stock transmission when rally driving.
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Old 02-04-2013, 09:17 PM   #9
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Bump?
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Old 02-05-2013, 06:48 PM   #10
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I happened to be thinking of this earlier today and came up with a half theory as long as you are about modding parts to work...

This is the composition of a slipper clutch:

This is the slipper clutch assembly for the Traxxas Grave Digger:

Here is a different one in a nitro truck:

In theory all you need is the appropriate gearing and mod a shaft to work with the mid shaft of the sprint 2 yet hold the slipper clutch assembly together while spacing the motor slightly deeper in the mount(would probably need cut and an adapter plate made). Or mate the slipper clutch to a modded pinion with an e-clip like in the installed pic.
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Old 02-06-2013, 06:49 AM   #11
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Hmmmmm... So I just need to find a way to put a longer shaft in?
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Old 02-06-2013, 09:02 PM   #12
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Seems that way but you ofcourse need to make sure you have the appropriate threading and spacing too. Spacing will probably be your biggest issue if you figure something out.
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