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It appears that your lower end is a Honda clone like a bunch of ours (163FML) When I went from the 15 to the 17......man....it was tight but fit perfectly. One more tooth....I don't know. 8O |
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More good news to report! The rear shock seems to be softening up nicely... I mean a HUGE improvement! Also, after a few wheelies I was able to get a measurement of front fork travel by checking the oil ring on the fork tubes. A full 6.5 inches of travel and no bottoming! The engine continues to amaze everyone that rides it. |
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Thought you may like that 17 tooth! Made a WHALE of a difference on mine! :D |
17 tooth
I also purchased a Hensim 250 from Tim recently after reading your review. I got it all put together and it rides great. Only thing that I don't like is the fact that I have trouble getting it above 60mph. It said 75+ mph on his specs depending on the weight of the rider.... I weigh 145. So, I'm a little disappointed there. My 200cc Lifanoid that I recently sold got up to 62 mph. Anyway, not a huge deal. I guess my question to you would be; when purchasing a 17 tooth sprocket from ebay, do I need one for a 420 or a 428 chain? I would really like to gain some highway speed. I took it for a ride on some forest service roads here in So. ILL and had a blast. If you could help me out here it would be much appreciated!
http://img.photobucket.com/albums/v9...0/P1010071.jpg |
I would suggest getting the 428. Typically the 420 is used on the pit bikes.
Also what size sprockets did it come with? Does it have a 15T on the front? 15 to 17 may be all you need to see closer to 70mph. Allen |
Thanks man! I wasn't sure. Yeah, it came with a 15 toother and I'm hoping for good things out of the 17 tooth. Much appreciated katoranger :)
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I agree with Allen. ;) You should definitely keep the size 428, drive chain, and sprockets. :)
Spud :) |
anyone with the 17 tooth sprocket able to chime in on the max speed of their bikes now? Curious to see how much of a difference it really makes, also are the carbs tuned? any other peformance possibilities?
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After putting on the 17 tooth front sprocket I noticed a big difference in top speed and first gear becomes a little more useful too ;) No chain mods were need for it either. I am however now looking to swap out the 56 tooth rear sprocket for something smaller to even further gain highway speed. After the 15 to 17 swap I now can get up to 66mph or so but that is with the engine screaming. I'd like to be able to do that speed at a lower rpm. I'm thinking of going down to a 45 tooth rear sprocket just because they are readily available on ebay. I'd like it if I could find a 50 tooth that would fit the 4-holes spaced 2.5 inches set up that the Hensim has in the rear. I'm just afraid the 45 tooth might make any off roading quite difficult. I'd like to find a happy medium.
As for other mods. The only other things I did to the engine was put on an inline fuel filter and I replaced the air box with a uni-filter. I am quite pleased with the way both of those turned out. The stock carb seems pretty good. Cheers! |
You will need to verify the mounting holes, but this link should be useful.
The sprocket from a honda xl185 fit my bike. Showing a 49 and 50T available. http://www.bikebandit.com/1980-honda...4?mg=41391&t=1 |
The 45-46T would be good for road and you could swap the 15t back on if you plan to ride off-road. That will gear you back down.
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