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09-15-2005, 01:17 PM

#888

Jeff Brown

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Quote:

Originally Posted by rayhuang

Curtis,Got a question. I ran some mod in practice tonight. Fastest combo so far was the Ti3, Sagami 8x1 18 degree timing, xxx brush and geared 0.775.

Motor wasnt even that hot-which amazed me.

Next I put the ti3, d4 blank, xxx brush 7x1, 12 degree timing geared 0.760 and it wasnt near as quick as the 8x1 combo

Did I miss something? Or is it possible the XXX brushes after about 7 or 8 runs have had it? They look fine!!

Ray

Ray.....

You didn't gear down enough for the 7x1. The Final Drive (FDR) for the 8x1 looks to be about 9.1 where as we have found 7x1 like to be down around a 9.75 FDR. This is about a 0.725" rollout.

Jeff

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