I feel more vibration at speed between about 70-75mph. If I throttle thru it goes away. If I am going 80 and deaccel to 73 then go back on the throttle I feel it again, until I hit 76 or so. Any thoughts? I know some people mentioned the belt tension as a possible vibration issue. Thought that would produce vibrations thru the whole powerban tho? Any help is greatly appreciated! :spyder:
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Noticeable vibrations...
- Thread starter Bullet24
- Start date
Fire Joe
MOgang Member
Might want to check this out if you haven't read it already. I think they mention it helping with vibrations at certain speeds / RPM range.
http://www.spyderlovers.com/forums/showthread.php?t=25110
http://www.spyderlovers.com/forums/showthread.php?t=25110
Thanks, seems that may be the issue. Now I just gotta save a couple hundred and buy one!
Campverdefela
New member
Front wheels out of balance?
JJW SpyderRider
New member
What I'm I missing? I too have the vibration at a narow RPM range. But this is a narrow engine RPM range not the belt RPM. The belt starts out slow then just keeps going faster as you go up through the gears. I get the vibration as the engine passes a certin RPM and how does this effect the belt as it just keeps getting faster? :dontknow:
My vibration only happens in 5th gear at 70-75mph. I can feel in the pegs that its coming from the rear. Not sure if it is actually happening in other gears also cause I am usually getting on it :thumbup:
For those of you wondering about vibration... Are we talking about a constant vibration at a certain speed, or only when you are accelerating through that range. I have no vibration at any constant RPM but when I accelerate aggressively I do get a buzz in the seat and pegs as I go through the 4-4500 range. I have always attributed it to the fact I was sitting ontop of a Vee Twin engine.
Bob Denman
New member
:agree: :roflblack::cheers:
Freddy
Active member
I used one of these to solve the problem with a 70mm flat auto idler and made a plate for 'tensioner' to mount on the swingarm and made up a bush for the pulley bearing. It's a bit more compact than the other one. Work perfectly - no more belt vibe :2thumbs: and I just LOVE that.
http://www.drillspot.com/products/46211/Rosta_SE18_Chain_Belt_Tensioner
http://www.drillspot.com/products/46211/Rosta_SE18_Chain_Belt_Tensioner
See post # 10 ; ataDude Explains whats happening better than i can:thumbup::thumbup:
BajaRon
Well-known member
Everyones belt will vibrate. There is just too much distance between pullies for this not to happen. Your vibration point, duration and intensity will vary depending on belt condition, tension and power applied.
Change any of these conditions and belt based vibration will change.
A good belt tensioner will reduce vibration to where you don't notice it.
Belt vibration is ground speed based (Pulley RPM). Engine vibration will be engine RPM based. When you get the same vibration at about the same RPM in every gear that is engine based.
Now that this is cleared up. I'll be happy to explain the theroy of relativity! :roflblack:
Change any of these conditions and belt based vibration will change.
A good belt tensioner will reduce vibration to where you don't notice it.
Belt vibration is ground speed based (Pulley RPM). Engine vibration will be engine RPM based. When you get the same vibration at about the same RPM in every gear that is engine based.
Now that this is cleared up. I'll be happy to explain the theroy of relativity! :roflblack:
capt.jim
Member
I used one of these to solve the problem with a 70mm flat auto idler and made a plate for 'tensioner' to mount on the swingarm and made up a bush for the pulley bearing. It's a bit more compact than the other one. Work perfectly - no more belt vibe :2thumbs: and I just LOVE that.
http://www.drillspot.com/products/46211/Rosta_SE18_Chain_Belt_Tensioner
[/QUOTE looks good, where there's a will, there's a way! Nessecity is the mother of invention!
GeminiJane
New member
My BMW is a belt drive cycle and I get that same short span of belt vibration - at a little different zone. On Spyder it's 67-71 and on BMW it's 62-66. I just think of them as my built in "speed alert" and power on through!
Don't waste time on the theory of relativity...you've got much more important and relevant things to concentrate on - like the next Spyder Soap Episode.
StriperKing
New member
ataDude hit the nail on the head. The key word he used is harmonics. A belt tensioner will be worth the $. It was for me. Mine fills more like a shaft drive now "almost that is" and that is close enough for me. :thumbup: Now if the weather will just break so I can use it! :gaah:
Good to know, I have it on my list of next mods to do :thumbup:
spyderflyer
New member
had my belt adjusted and it went away
Freddy
Active member
They must have done it to the old tension.
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