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That is a very lovable motorcycle. 55 BHP is almost enough to have fun with, especially if a 5 speed CR gearbox is fitted. I don't know what the XR750 Production Racer turned out, however I suspect it wouldn't been a whole lot more. I doubt that my Seeley 850 turns out over 60 BHP, however the torque is immense, and you can use the close gears to climb up in top speed. You won't know how good or otherwise your bike is until you try it. You might find that it will pull very high overall gearing. As Rohan says horsepower costs dollars. In going down that path there is usually a trade-off between low end torque and top end power, and the mechanical problems are part of the journey. If you want to drag or race the bike, you might be better to use methanol fuel with a good dose of nitro, and leave the rest relatively unchanged.

<blockquote data-quote="acotrel" data-source="post: 201998" data-attributes="member: 4295"><p>That is a&nbsp; very lovable motorcycle.&nbsp; 55 BHP is almost enough to have fun with, especially if a 5 speed CR gearbox is fitted. I don&#039;t know what the XR750 Production Racer turned out, however I suspect it wouldn&#039;t been&nbsp; a whole lot more. I doubt that my Seeley 850 turns out over 60 BHP, however the torque is immense, and you can use the close gears to climb up in top speed. You won&#039;t know how good or otherwise your bike is until you try it. You might find that it will pull very high overall gearing. As Rohan says horsepower costs dollars.&nbsp; In going down that path there is usually a trade-off between low end torque and top end power, and the mechanical problems are part of the journey.&nbsp; If you want to drag or race the bike, you might&nbsp; be better to use methanol fuel with a good dose&nbsp; of nitro, and&nbsp; leave the rest relatively unchanged.</p></blockquote><p></p>

[QUOTE="acotrel, post: 201998, member: 4295"] That is a very lovable motorcycle. 55 BHP is almost enough to have fun with, especially if a 5 speed CR gearbox is fitted. I don't know what the XR750 Production Racer turned out, however I suspect it wouldn't been a whole lot more. I doubt that my Seeley 850 turns out over 60 BHP, however the torque is immense, and you can use the close gears to climb up in top speed. You won't know how good or otherwise your bike is until you try it. You might find that it will pull very high overall gearing. As Rohan says horsepower costs dollars. In going down that path there is usually a trade-off between low end torque and top end power, and the mechanical problems are part of the journey. If you want to drag or race the bike, you might be better to use methanol fuel with a good dose of nitro, and leave the rest relatively unchanged. [/QUOTE]

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