longtrack Posted August 21, 2013 Report Share Posted August 21, 2013 Hi there.... Could someone please tell me the difference between a Jawa number 1 and number 4 diamond ? Is the number 4 more of an all rounder, as it seems more popular..... Thanks in advance Quote Link to comment Share on other sites More sharing options...
Long Eye Posted August 22, 2013 Report Share Posted August 22, 2013 Hi there.... Could someone please tell me the difference between a Jawa number 1 and number 4 diamond ? Is the number 4 more of an all rounder, as it seems more popular..... Thanks in advance The main difference is the position of the mounting holes at the back of the diamond where it bolts to the engine plates. On a number 1 diamond they are about 20mm closer to the mounting lugs for the back end. Quote Link to comment Share on other sites More sharing options...
longtrack Posted August 24, 2013 Author Report Share Posted August 24, 2013 Thanks Long Eye...Much appreciated... So if I understand correctly, that means the wheel base on a number one diamond is shorter? Quote Link to comment Share on other sites More sharing options...
Long Eye Posted August 25, 2013 Report Share Posted August 25, 2013 Thanks Long Eye...Much appreciated... So if I understand correctly, that means the wheel base on a number one diamond is shorter? No. The wheel base is the same just the rear of the diamond is slightly shorter in the vertical plane. It was done probably to mount the countershaft further back to allow for a longer primary chain. Quote Link to comment Share on other sites More sharing options...
XTC38L Posted August 27, 2013 Report Share Posted August 27, 2013 It changes the amount of flex in the diamond. The no.1 flexes more than no.4 which changes the way they handle Quote Link to comment Share on other sites More sharing options...
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