Dug106y Posted July 6, 2014 Share Posted July 6, 2014 Evening all I would like your opinions on what gearing or which part you would change. Right so here goes I'm running a picco p3 28 with 52/17 cb/spur with a three speed box with high speed third and big joe tyres. I have just installed bullet proof diffs today and now it struggles at top end and a bit steady off the line. Your opinions would be appreciated. Thanks Quote Link to comment Share on other sites More sharing options...
fatboyneil Posted July 8, 2014 Share Posted July 8, 2014 I'd lower the spur to a 49t then it will give you more options with the clutchbell but running a three speed box and big joes don't mix well from what others have said you'll struggle to get third gear you need to be using the xl standard gear ratio 1 Quote Link to comment Share on other sites More sharing options...
jordan_bench10 Posted July 9, 2014 Share Posted July 9, 2014 I'd lower the spur to a 49t then it will give you more options with the clutchbell but running a three speed box and big joes don't mix well from what others have said you'll struggle to get third gear you need to be using the xl standard gear ratio they come standard with 3 speeds Quote Link to comment Share on other sites More sharing options...
Wrighty8766 Posted July 9, 2014 Share Posted July 9, 2014 they come standard with 3 speeds Don't come standard with big joes though Quote Link to comment Share on other sites More sharing options...
fatboyneil Posted July 10, 2014 Share Posted July 10, 2014 I didn't mean the gearbox I ment the standard lx spur and clutch. Which are 16t clutch with alloy shoes http://m.ebay.co.uk/itm/331237630540 And 52t spur http://m.ebay.co.uk/itm/331250241175 So with that in mind I'd say drop your clutchbell to a 15t as that might help a little I'd also consider ditching the three speed for a two the 3 speed is ment for bigger engines than the .28 Quote Link to comment Share on other sites More sharing options...
fatboyneil Posted July 10, 2014 Share Posted July 10, 2014 (edited) http://m.ebay.co.uk/itm/371094172182 At that price their worth getting to give you more options Edited July 10, 2014 by fatboyneil Quote Link to comment Share on other sites More sharing options...
Dug106y Posted July 10, 2014 Author Share Posted July 10, 2014 Thanks for your replays. Before I changed the diffs over the picco could pull the gearing I had. I had the third gear set at the end of the power range and could wheelie in third on a good day. I'm gonna try a 15t and see if we can get it revving again. Quote Link to comment Share on other sites More sharing options...
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