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  #1  
Old 12-26-2013, 02:28 AM
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Default Lightest drive systems capable of 200+ HP

If you were building a sled from the ground up that was going to make 200-250 HP, which drive system would you use? How light can you get a complete drive system? Is sub 25 lbs for everything reasonable? Is sub 20 lbs possible with lightweight shafts and 7075/Ti. bolts, and a drilled Ti. brake rotor?

I was thinking a Diamond Lite drive with high torque gears, billet cover, lightweight trackshaft & brake rotor, and the caliper from a '12+ M8 if it will fit the Diamond Drive trackshaft (stock M series caliper is heavy). Biggest downside to this is being stuck with a crappy secondary clutch. I had a ZR900 DD in a Rev and liked it aside from the clutch.

What's a complete CMX belt drive weigh with the shafts?

What's an RMI drive weigh? Are these still available?

How about the factory Polaris belt drive? Would the belts live if it was in a stiff tube chassis? Are they failing in the Pro's because of chassis flex?

Or do you forget all the fancy crap and just stick with a bulletproof chain case from an Apex?

Either a gear drive, or belt drive or chaincase with 8" or more C to C would be ideal to run a 3" track and 8-tooth or 9-tooth 3" pitch drivers. 9-tooth would be ideal. I don't want the jackshaft in the tunnel, defeats the whole purpose of having track clearance (IMO).

To sum it up: I built a very light turbo nytro last year, and I'm getting ready to build another from the ground up (mainly just using a Nytro motor, the rest will be fabricated). I want a finished weight under 400 lbs. I have most of the details worked out but I can't for the life of me decide what to do for the drive train. I've been going back and forth for a few months now so I decided to post up.

Last edited by SNWMBL; 12-26-2013 at 02:34 AM.
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  #2  
Old 12-26-2013, 01:07 PM
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CMX. i dont remeber the full package weight but its damn light, well layed out and everything you need to get going, and your not stuck with a junk clutch, can be cut for any secondary you want.
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Old 12-26-2013, 11:44 PM
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Supreme tool machine makes a diamond drive looking chaincase.
Saw it in a different tube chassis build.
Oh its slightly cheaper than the cmx


You should try the 5/8 by .035 wall tube i had good luck bending it with a jd squared model 53 bender with their tightest radius die they sell.
2.125 clr i think.
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Last edited by Sheetmetalfab; 12-26-2013 at 11:50 PM.
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Old 12-27-2013, 01:48 PM
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This is what you need.
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Old 12-28-2013, 01:33 PM
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This is what you need.


Could you post som more pics of that sled?
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Old 12-28-2013, 04:12 PM
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I dont wanna step on Calebs thread but here are a few...
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Old 12-29-2013, 05:46 AM
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Quote:
Originally Posted by Sheetmetalfab View Post
Supreme tool machine makes a diamond drive looking chaincase.
Saw it in a different tube chassis build.
Oh its slightly cheaper than the cmx


You should try the 5/8 by .035 wall tube i had good luck bending it with a jd squared model 53 bender with their tightest radius die they sell.
2.125 clr i think.
The STM case is limited to a 14" wide track.
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Old 12-30-2013, 09:28 PM
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Not to mention header routing
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Old 12-31-2013, 09:53 AM
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Apex case is bullet proof, Id run that and lighten it as much as possible. At least when you ride you will never have to worry if its gonna blow up. Easy to find and easy to get parts for.
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Old 12-31-2013, 10:49 AM
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Old 12-31-2013, 07:59 PM
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Old 01-04-2014, 12:47 AM
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Old 01-04-2014, 06:05 AM
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