How smooth should the SH be?
Yesterday I took a ride at my favorate lakeside road here.
The problem is it seems that the bike doesn't run smooth enough, since it's a second-hand and till now I can't find another one here, so I don't know it's a problem or it is what it suppose to be. I can feel there's a force pushing and pulling the bike when you holding the throttle steadly. I cleaned the carb and this problem had been reduced. Besides, the vibration is so strong, when cruising at 80kph at 6th gear, I can feel the pulse of vibration, it isn't comfortable. My last bike is a Hwak GT 650, but it's smoother than the SH. Is this right? Now the bike has 41100km on its speedometer, don't know if a jet kit would make some changes. |
That doesn't sound right to me. Are u sure it's engine related? If you pull in the clutch, does the bike still feel rough? Is there a particular RPM where it's twitchy? have you had a professional tune-up recently?
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I'm sure it's about the engine.
The pushing and pulling force has been reduced, but not eliminated. The vibration feels not like a problem, just not feel comfortable. There's almost no experienced mechanic here, and they always don't feel wrong with my bike. |
Sounds to me like maybe timing is off, or carbs are out of synchronization. The SH is one of the more smooth V-Twins that I've ridden - so something isn't right. I don't do much of this work myself, maybe one of the others can add some insight.
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I've sync the carbs.
Maybe the timing... |
Re: How smooth should the SH be?
Adjust your chain.
I bet it is too loose. My '03 did that at about 1500 miles & it was my chain adjustment. Stopped after I adjusted it ! I never would have thought that could do it but a friend suggested I check it out. He was right! I just saw you have 41,100km - Wow thats about 25,500 miles. Have the chain & gears ever been replaced? Here's a pic of a really worn sprocket. Does yours look like this? http://faq.f650.com/FAQs/Photos/Chai...nRearSprkt.jpg http://faq.f650.com/FAQs/Photos/Chai...rocketWear.jpg |
I've replaced the chain and sprockets, they're like new now.
I will check the chain adjustment first, it's easier. Thanks! |
Mine had the same problem when i bought it..... it turned out that the chain was too tight and the rear axle was waaaaaaay over tourqed.
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Re: How smooth should the SH be?
If these tips do not help you, I would be looking at the tuning a bit more. An engine that surges like that is sometimes lean on the fule setting. If it is doing it at constant throttle perhaps your needles need richening up a bit.
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