Do all Sprints 'buzz'?

[StaggerLee]

So disappointed to hear that there is some high frequency vibration with the sprint. I had to sell two bikes (both 4 cyl UJM) because of this issue. It drives me crazy. After the last bike (GSX750f) I swore I would never buy a jap 4 again. I am toying with buying a second hand sprint and would like to hear more about the problem, speed - rev range it occurs and what cures are out there.

[dolson]

Originally Posted by StaggerLee

So disappointed to hear that there is some high frequency vibration with the sprint. I had to sell two bikes (both 4 cyl UJM) because of this issue. It drives me crazy. After the last bike (GSX750f) I swore I would never buy a jap 4 again. I am toying with buying a second hand sprint and would like to hear more about the problem, speed - rev range it occurs and what cures are out there.

Your questions would be difficult if not impossible answer as OnD said basically one man's fish is another's fowl. Some people are hypersensitive expecting Lincoln limo smoothness and disappointed in not getting it. These are bikes after all with a lot of whirly around things going on. Could be tires, wheels, anything. The only option I see for you is to keep buying and selling until you end up with something that suits you.
I don't want to seem snotty or anything but this is one of those unanswerable questions that is based totally on perceived likes and dislikes of an individual.

My opinion, my bike has no hot spots. It's smooth throughout the rev range. Someone else might get on my bike and have a different opinion.

Don

[6_Myles]

My experience is not an opinion, my hand going numb is a very real fact. It is most definitely engine related and I'm trying desperately to find the cause, but it doesn't keep me off my Sprint, it is a fine motorcycle for sure. I've had buzzy motorcycles before, put 32k miles on my FZ-1 and it was all kind of buzzy, but this is the first time it is the right frequency to put my hand to sleep.

But with that being said, high/low vibs are subjective but there are VERY few people on this board who report physical problems. My recommendation would be to take a test ride and see what you think.

[dolson]

An enterprising hotrodder might try lead shot or different bar end weights. That's what those thingusses are at the end of the grips. That and loosen up on the grip a bit.

[alii1959]

Well, I came to my 2001 Sprint from a 2007 250Ninja....such a reduction in vibration that it seems to be nearly absent. That is until I exceed 70-80Mph, indicated, then the buzzing in the bars/pegs becomes noticeable again. It isn't that bad...to me..... If you want to be sure that the Sprint will suffice, take a ride on a Buell Blast to find out how much a bike can vibrate. That was the worst bike I have ever ridden. I don't expect that any bike is completely free of vibrate, but BMWs probably come the closest. I was past by one the other day....never even heard the thing. Stopped at a red light next to it....still couldn't hear it. Kinda weird.

[justinrhenry]

[ralphus]

[quote=6_Myles;1030547]It is most definitely engine related and I'm trying desperately to find the cause, but it doesn't keep me off my Sprint, it is a fine motorcycle for sure. I've had buzzy motorcycles before, put 32k miles on my FZ-1 and it was all kind of buzzy, but this is the first time it is the right frequency to put my hand to sleep.[quote]

As mentioned earlier Triumph recognise that handlebar vibes is pretty serious issue and hence their solution is those elaborate dampers on the bar ends.

This works OK for most people but there are some people out there are still sensitive to vibes coming off the engine such as yourself.

Engine vibes are usually addressed with rubber mounts to dampen out vibes transferred to the frame. Triumph engines are directly mounted to the frame, hence engine vibes are transferred directly to the frame.

You need to dial them out by isolating the handlebars from the engine and frame (rubber sandwiched between the handlebars and tripleclamp is reasonably effective) or by changing the mass of the handlebars so natural frequencies don't coincide with the engine resonants. Heavier bar ends weights lower the natural frequency of the bar ends while lighter bar ends have the opposite effect.

BTW I own an FZ1 as well and the buzzing was pretty easy to fix in most cases. Usually caused by folks tightening up the engine mounts too much not allowing the engine damping arrangement to do its job.

[Pickle Jim]

Refering to the comparison with Jap fours.
I've just swapped from a K4 GSXR 750 and the Sprint seems way less buzzy + with less weight on my hands it's easier to relax my grip even at speed.
Now if I could only fit a Suzuki gearbox............Hmmm.

[StaggerLee]

As mentioned earlier Triumph recognise that handlebar vibes is pretty serious issue and hence their solution is those elaborate dampers on the bar ends.

This works OK for most people but there are some people out there are still sensitive to vibes coming off the engine such as yourself.

Engine vibes are usually addressed with rubber mounts to dampen out vibes transferred to the frame. Triumph engines are directly mounted to the frame, hence engine vibes are transferred directly to the frame.

You need to dial them out by isolating the handlebars from the engine and frame (rubber sandwiched between the handlebars and tripleclamp is reasonably effective) or by changing the mass of the handlebars so natural frequencies don't coincide with the engine resonants. Heavier bar ends weights lower the natural frequency of the bar ends while lighter bar ends have the opposite effect.

[/quote]

Good info in that post, thankyou

so putting rubber between the clamps is a easy fix for me, but does anybody make bar ends for triumphs?

[4N099]

If I don't pay attention to my posture and grip the tank a little within 20 minutes or less I start losing feeling in my index and middle finger, thumb follows half an hour later.
It's like throwing two dead fish on the front brake.