Last year the bike ran 15 seconds at 40MPH. We had a mild 6.5 clone that probably put out 9-10HP. The 1st time out was at Ubly and I learned how to ride the bike. It ran straight and true. We could not get the engine to develop full RPM and we felt that the TAV was the problem. The second time out we went to Milan. Prior to Milan we checked the clutches and regeared the bike. It made no difference during the time trials. The bike still ran 15 seconds at 40MPH. On the last time trial run I broke the primary clutch. The engine idles at 2000RPMs and the clutch engages at 2600RPMs. We had a replacement clutch but it had a 1800 RPM engagement speed. During eliminations the bike was touchy on the starting line. As soon as the engine started, the clutch was engaging. I had to hold the brake firmly to keep the bike under control. With the clutch locking in at idle, the belt was burning as soon as the engine started. All I smelled at the starting line was burning belt. with the belt eating itself up I was losing 2/10 of a second per run because the belt was getting thinner after every run. I changed my dial-in time after every run by 2/10 of a second. The other problem is that with the clutch was already engaging at idle on the starting line so the bike would not launch correctly.
I am installing the 420 because I feel that a mild big block build will be more cost effective than a wild build on a 6.5HP motor. Also I am after no/low maintenance between races. I travel overseas a lot and I want a fun ride when I get home with minimal maintenance. As far as ET times, do not worry. This is dial-in bracket racing. Everyone has an even chance of winning. You will see bikes running 25MPH to bikes that run 85+MPH, and plenty of bikes in between. It's not about how fast you can run, it is about how consistently you can run your chosen dial-in time.
Rear wheel: JR Race Car 555-754-03 - JR Race Car 3-Spoke Jr. Dragster Polished Rear Wheels, size 8" x 8".
Rear Tire: Mickey Thompson 90000000943 - ET Jr. Drag Slick, 18x8-8, Bias-Ply, M2 Compound, Blackwall
I am installing the 420 because I feel that a mild big block build will be more cost effective than a wild build on a 6.5HP motor. Also I am after no/low maintenance between races. I travel overseas a lot and I want a fun ride when I get home with minimal maintenance. As far as ET times, do not worry. This is dial-in bracket racing. Everyone has an even chance of winning. You will see bikes running 25MPH to bikes that run 85+MPH, and plenty of bikes in between. It's not about how fast you can run, it is about how consistently you can run your chosen dial-in time.
Rear wheel: JR Race Car 555-754-03 - JR Race Car 3-Spoke Jr. Dragster Polished Rear Wheels, size 8" x 8".
Rear Tire: Mickey Thompson 90000000943 - ET Jr. Drag Slick, 18x8-8, Bias-Ply, M2 Compound, Blackwall
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