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Old 07-13-2010, 04:09 AM   #1
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Default Large rear wheels and small front wheels?

How will such a setup effect the differentials? Reason I am asking is because I ended up remaking a DBX with large rear wheels and small front wheels.
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Old 07-14-2010, 01:35 AM   #2
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If you have a center diff that would be effected.
It would constantly work to even out the load on the front and rear axle rotation.
If you DON'T have a center diff you won't be able to drive at all.
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Old 07-14-2010, 12:47 PM   #3
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I know with the Ofna Sprint, it comes with different size front and rear wheels. The people that tried it out on the local oval said it pushed real bad if the turns if you were on the throttle. It wanted to go straight when the throttle was applied. aybe if you used a real thin center fluid, it might work okay.

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Old 07-14-2010, 12:49 PM   #4
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You will pull up the front wheels a lot!
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Old 07-14-2010, 01:00 PM   #5
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Quote:
Originally Posted by dj_sparky View Post
How will such a setup effect the differentials? Reason I am asking is because I ended up remaking a DBX with large rear wheels and small front wheels.
At the very least, your front tires will wear faster, especially if you use high-viscosity oil in the center. The latter will also be highly solicited by that setup.
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Old 07-15-2010, 12:27 AM   #6
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Quote:
Originally Posted by toobad4u View Post
I know with the Ofna Sprint, it comes with different size front and rear wheels. The people that tried it out on the local oval said it pushed real bad if the turns if you were on the throttle. It wanted to go straight when the throttle was applied. aybe if you used a real thin center fluid, it might work okay.

Stephen
If I understand you correct you're talking about a car that came stock with different sizes? If that is the case they also have different gearing in the front diff vs the rear diff OR no diff fluid in the center diff (a bad thing).
Think of large modern 4x4 tractors, they have pretty big difference in tire size.
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Old 07-16-2010, 01:45 PM   #7
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The gears inside the cases are the same front to rear. The center is a regular type differential from Ofna so it just has a little grease in it. Where we race, everyone has to use foams only, so it doesn't really matter since they are the same front and rear. It probably only comes with the different sizes to increase the realism.

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Old 07-16-2010, 02:42 PM   #8
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I'm wondering if the OP means Wider or taller (ie bigger Diameter)?

Wider won't make much difference, but taller can cause problems, if not regeared to compensate.
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Old 07-16-2010, 03:56 PM   #9
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Thank you all for your help.

I meant bigger all over. Taller, wider. It will indeed struggle a bit more, but I was hoping it would work atleast.

I guess I'll just remove the front drive shafts and make it rear wheel drive only.

Does anyone happen to know of a stronger gear set/differential that will fit the DBX?
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