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So far so good! My top speed was 19 mph Now it will hit 31 mph at 5000 rpm. It gets to 30 mph in less than half the distance it used to get to 20mph. It pulls hills much better also. I might add that the pre build speeds were with a bare machine and the post build speeds were with a roll cage and a winch mounted, so the machine is heavier but performs much better.
I am a little disapointed with the rpm range. I was hoping to be able to run at 6500 rpm. The engine is capable, we ran it up to 7500 rpm on the bench but with the clutch attached and in the machine it will only hit 5000. I contacted comet clutches and they said to replace the spring in the clutch with a red one. They said that would allow the engine to rev higher, quicker. I got the spring in the mail today and will install it tomorrow.
I still need to build a set of headers and might go with a different carb.
Now it will hit 31 mph at 5000 rpm. It gets to 30 mph in less than half the distance it used to get to 20mph. It pulls hills much better also. I might add that the pre build speeds were with a bare machine and the post build speeds were with a roll cage and a winch mounted, so the machine is heavier but performs much better.
on the bench but with the clutch attached and in the machine it will only hit 5000. I contacted comet clutches and they said to replace the spring in the clutch with a red one. They said that would allow the engine to rev higher, quicker. I got the spring in the mail today and will install it tomorrow.
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