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Old 04-18-2012, 05:09 PM   #1 (permalink)
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Ground clearance VS Center of gravity?

I'm swinging drivetrain into the 'Binder Speed'. Trying to decide whats better lower CoG or higher ground clearance.

Scouts originally came with completely flat bellys so it would be easy to keep that but if I move the motor around a little bit, I get much better weight distribution and CoG. But then, everything ends up 6" below the frame rails.

I'm running 120" WB and 35" tires so ground clearance is a premium.

What to do.......
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Old 04-18-2012, 05:14 PM   #2 (permalink)
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Quote:
Originally Posted by binderbound View Post
I'm swinging drivetrain into the 'Binder Speed'. Trying to decide whats better lower CoG or higher ground clearance.

Scouts originally came with completely flat bellys so it would be easy to keep that but if I move the motor around a little bit, I get much better weight distribution and CoG. But then, everything ends up 6" below the frame rails.

I'm running 120" WB and 35" tires so ground clearance is a premium.

What to do.......
Flat belly. Not an even remotely difficult decision. 120 with 35's? dude. You need 25in minimum.
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Old 04-18-2012, 05:25 PM   #3 (permalink)
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Flat belly. Not an even remotely difficult decision. 120 with 35's? dude. You need 25in minimum.
Given the fact that ultra 4/dirt riot courses are generally less rocky/technical than traditional rock events, would a low belly be that bad? I'm just thinking about it from a speed/stability perspective.
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Old 04-18-2012, 06:18 PM   #4 (permalink)
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decide how much uptravel you are going to get with your tire size and add 3-4" of reserve space. ground clearance is whatever it is
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Old 04-18-2012, 08:47 PM   #5 (permalink)
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the binder in your sig?
move the axles on top of the leaves. gives you lower COG and maintains the flat belly
you havent even tried to make it low from what I saw
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Old 04-18-2012, 09:52 PM   #6 (permalink)
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There were no rocks in this years EMC race so I'd build for speed over rocks.
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Old 04-18-2012, 10:17 PM   #7 (permalink)
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Quote:
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Given the fact that ultra 4/dirt riot courses are generally less rocky/technical than traditional rock events, would a low belly be that bad? I'm just thinking about it from a speed/stability perspective.
Are you building it for one race, or to actually wheel? Either way, at 120 you need clearance.
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Old 04-18-2012, 10:36 PM   #8 (permalink)
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I think belly width is really important, it definitely plays in as much as height.
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Old 04-18-2012, 11:16 PM   #9 (permalink)
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Quote:
Originally Posted by mj View Post
the binder in your sig?
move the axles on top of the leaves. gives you lower COG and maintains the flat belly
you havent even tried to make it low from what I saw
and then everything else drags. plus, I cant get the travel I need being SUA. Also, fender trimming is an option but fender butchering isnt.

Quote:
Originally Posted by hurleygo3 View Post
There were no rocks in this years EMC race so I'd build for speed over rocks.
Thats what I was wondering.

Quote:
Originally Posted by Buckon37s View Post
Are you building it for one race, or to actually wheel? Either way, at 120 you need clearance.
building it for race series, not recreational wheeling.

Quote:
Originally Posted by Stephen View Post
I think belly width is really important, it definitely plays in as much as height.
Good thought. The widest part would be my D300, still much narrower than the frame rails.

hmmmmm.......
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Old 04-19-2012, 12:08 AM   #10 (permalink)
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...I cant get the travel I need being SUA.
SUA > SOA for go-fast stuff. Hands-down.
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Old 04-19-2012, 03:35 AM   #11 (permalink)
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how much are you trying to move the motor? just down or down and back? if you can move it enough to help lower your center of gravity and better weight distribution, I think it could be worth it, as long as the majority of the skid is flat. you might have to make small hump with the tcase hangs down, but if you build it like a ramp I think it would be fine. Is the tcase clocked at all?

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Old 04-19-2012, 08:35 AM   #12 (permalink)
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Quote:
Originally Posted by JESSE_at_TLT View Post
SUA > SOA for go-fast stuff. Hands-down.
I guess I meant to say, with my current set up and budget, SOA is what works for me. Yes, SUA works best but I cant afford 65" deavers and I dont have room for them in this rig.

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how much are you trying to move the motor? just down or down and back? if you can move it enough to help lower your center of gravity and better weight distribution, I think it could be worth it, as long as the majority of the skid is flat. you might have to make small hump with the tcase hangs down, but if you build it like a ramp I think it would be fine. Is the tcase clocked at all?

Brian
Down and back. T-case will be flat.
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