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Horse Power loss for unknown reason
Friends:
I've noticed over the last year that my Trophy just doesn't have the top speed that it used to. I remember when my bike was new occasionally running it up to about 135 mph. I notice these days that it maxes out at about 110. This is with a top box and some gear in the side bags.
I recently decided to have my local dealer put my bike on his dyno. The results of the dyno comfirmed my suspicion. The max hp reading at the wheel was 64 hp. They wound it out and got 147 mph without any aerodynamic drag on the bike. As you know, the factory hp rating on the engine is about 104. My bike has 60K miles on it.
I have been meticulous about the scheduled maintenence on my bike. I do my own valve shim adjustments and follow the procedures in the shop manual. However, since I do not have the Triumph valve tool I am force to remove the cam shaft(s) each time I have to R&R a shim. I take my time and pay a lot of attention to getting the cams in-time. Of course, I am not a Triumph trained mechanic. Like everyone, I occasionally make mistakes. Oviously, I have already considered to possibility of having a cam out of time. Since the problem has been going on over at least two successive valve adjustments, I would have had to have made the same mistake more than once.
What other issues could cause this loss of power? I appreciate you taking time to help me out.
Wayne
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