Nurburg2006
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| posted on 24/5/13 at 10:51 AM |
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Which diff
Sorry guys I am putting in a 919 blade engine I've got a 3.77 in the car and I was given another diff Which has 39 teeth on the crown wheel and
only 10 on the pinion from what I can see it that a 3.54 has 39 and 11, I've recounted again and again and still come up with 10? And
it's in a locost. Cheers
[Edited on 24/5/13 by Nurburg2006]
[Edited on 24/5/13 by Nurburg2006]
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silky16v
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| posted on 24/5/13 at 11:16 AM |
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what engine you using?
what is the car used for?
what car do you have?
What gearbox?
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ReMan
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| posted on 24/5/13 at 11:16 AM |
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Why?
www.plusnine.co.uk
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ian locostzx9rc2
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| posted on 24/5/13 at 11:48 AM |
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Ill look at my crystal ball !!!!!!!!
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ian locostzx9rc2
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| posted on 24/5/13 at 01:03 PM |
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3.54 would be better
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Nurburg2006
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| posted on 24/5/13 at 01:22 PM |
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Shouldn't the diff pinion for a 3.54 have 11 teeth?? Mine has 10?
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mark chandler
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| posted on 24/5/13 at 02:09 PM |
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It's not teeth but diameter that affects the ratio so it's hard to tell what you have, did they arrive as a matched pair? The ratio should
be scribed on both items along with matching numbers.
FYI 3.65 diff on 919 blade with 185/60/13 wheels gave max speed ~125mph at ~12,750 rpm which for short tracks is bang on as the standard engine will
not pull anything much higher in a locost, very buzzy for the road. At Lydden hill or brands Indy circuits this is perfect.
If you can get a lower ratio it would be better for the road, 3.77 will be annoying.
Regards Mark
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adithorp
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| posted on 24/5/13 at 02:39 PM |
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The one you've been given then is a 3.9.
Mark, think about it... crown wheel/pinion=ratio
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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Nurburg2006
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| posted on 24/5/13 at 03:26 PM |
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Yes your right it's a 3.9 now looking for a 3.54 or maybe exchange my 3.77 for one and cash
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