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Discussion Starter #2
if you look this up on youtube it tells you in the description what he has done to the bike. my t-dub is defiantly not this quick.
 

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I had seen this video and commented it, what impresses me is how quick he gets to 120 km/h, my bike gets to 110 km/h and then takes forever to move further.
 

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That's impressive.



Here's his set up:



"2004 Yamaha TW200, TK CV carb with 130 main jet (large round), enlarged hole on bottom of CV slide, shimmed needle up 0.030, Uni filter, 14/47 gearing with o-ring chain, Webcam camshaft grind #40a"



It's nearly the same as mine, except for the camshaft grind and the enlarged slide hole, and my TW doesn't perform the same.



That was some very smooth shifting.



jb
 

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Mine would only go that fast if I drove it down a ski jump




Why is it so quiet at top speed?


The camera was duct taped to a square cardboard tube fitted over the speedometer so it was probably muffled quite well with tape over the microphone. I do have a 45 deg. tip fitted over the back of my muffler which may have helped with the noise? I tried it to quiet it down in my helmet. Didn't really work but I left it on anyways.
 

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Discussion Starter #8
the forum is great. where else can you post a cool youtube video and actually find the person who made it.
 

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hmmm......I don't believe it.





Look in the reflection of the speedometer, are those florescent shop lights I see??? This would be super easy to do by jacking the rear tire off the ground. Trickier though, to photoshop the shop lights out though
Also, it is wayyy too smooth. Were you riding on glass or ice?





My prior apologies for my skepticism...it just seems too fast to be true.



-Adam
 

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I don't know what to think. It's a damn good advertisement for Web Cam camshaft upgrade!



There is only one way to settle the debate. Video of the TW from a chase car with the video showing the chase car speedometer and the TW at the same time.
 

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Fair enough. I would be surprised if someone didn't question it. I'm not going to say there weren't some hills as you can see the speedometer bump up fairly quickly on the high end. But these aren't long rolling hills. I'm in MN so the hills our short, and at 70mph+ you are back to the flats pretty quick. Of course I'll take another video this spring, but I'm not sure when that'll come as it's been a good winter so far. Gives me time to rig up a chest mounted camera mount




No one believed this guy with his caily driver diesel truck either until he had video to prove it too




[media]http://www.youtube.com/watch?v=IDSMKks2xW8[/media]
 

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hmmm......I don't believe it.





Look in the reflection of the speedometer, are those florescent shop lights I see??? This would be super easy to do by jacking the rear tire off the ground. Trickier though, to photoshop the shop lights out though
Also, it is wayyy too smooth. Were you riding on glass or ice?





My prior apologies for my skepticism...it just seems too fast to be true.



-Adam




Not quite as easy as you describe, since the speedometer runs off the front wheel . . . .
 

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Fair enough. I would be surprised if someone didn't question it.


I am not saying or implying that it is not true. I certainly don't think the video is a fabrication; I see no point in that.



I would just like to see the performance of the camshaft in conjunction with the other modifications placed in context, namely showing the full motorcycle at speed, rider position at speed, and terrain, with another vehicle for reference.



That is all I was trying to say.



I am seriously considering upgrading the cam, so determining the net gain (in context) is important to me, at least.
 

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haha, I had to question you pgilles




Not that I truly don't believe you, it's just quite fast - that's all! All in good fun




Nice looking TW, BTW.



-Adam
 

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All it would take is remachining the rear hub to drive the speedo cable drive mechanism, which itself would have to be remachined to accept the fatter rear axle, and some mechanism fabricated to prevent the cable drive mechanism from spinning with the wheel. Easy as pie!
 

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I am not saying or implying that it is not true. I certainly don't think the video is a fabrication; I see no point in that.



I would just like to see the performance of the camshaft in conjunction with the other modifications placed in context, namely showing the full motorcycle at speed, rider position at speed, and terrain, with another vehicle for reference.



That is all I was trying to say.



I am seriously considering upgrading the cam, so determining the net gain (in context) is important to me, at least.




haha, I had to question you pgilles




Not that I truly don't believe you, it's just quite fast - that's all! All in good fun




Nice looking TW, BTW.



-Adam


No worries! I'm not 'offended' or anything like that. I'd actually be worried if someone didn't question it, as a video strictly of the speedometer leaves much to the imagination
To get it over 75 I have to be coming down a hill of any sort or lean down, but up to that point I can sit up as usual. I'm 5'10" 175 lbs. When I take it to work and get on the interstate I can get it to the 79mph mark (indicated on the speedometer, not a GPS), but that's when I'm behind a car that's breaking the air (I don't have to be that close to them to benefit from them), but at that rate it's really screaming.



I'm half attempted to go back to the 14/50 as I want to be reminded of its performance to compare it to the 14/47 and the 50 can still get beyond the 70mph mark. But 1st gear is so much better with the 47, enough so that I might assume it's faster with the 47 because you're not shifting so frequently at the lower speeds which is where the 200cc doesn't have aerodynamic drag to fight against.



There are few reviews of this cam, but they are positive. I spend my time on the roads (not offroads) so I can't tell you if there is a loss of low-end. It doesn't feel like it to me, but the time my bike spends at low rpm's is minimal.



I'm interested to see what comes out of the stage 2 cam dyno runs in the other thread. Hopefully the environmental conditions are fairly consistent from one run to the next, even considering correction factors.
 

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I too am waiting for the dyno results of the stage 2. My TW will be street only, so low-end for off road use isn't a concern for me either.

These little bikes are just too much fun-regardless of how you use them.
 
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