Not good vibrations

[qcnr]

What could cause high frequency vibration on a motorbike? My Honda XL600V took me on a 1200km roundtrip with some friends last weekend and no problems. However now I am back to commuting there is a really high frequency vibration.
it starts around 3000rpm, is really noticeable at 4000rpm and after the 35 km ride to
work/ home I am glad to get off. My arms and hands feel all tingly, a bit like holding
on to something with low amp electricity, if you see what I mean.
Obviously I want to trace the source and fix it, as in 2 weeks I am off to Germany. If
I can't fix it I feel like cancelling as I fear the ride would be very unpleasant.
As a last resort what DIY solutions could be used to Isolate the handlebars?

[Tramp]

Balance the carbs...and check for loose bolts on bars or engine mounts....also check tyres for worn tread could be lots of things ...i had a 650 alp..

[SIF]

Had this on my X Challenge when I bought it, changed the spark plug and all fixed. Vibes were through the grips and the pegs, dreadful !

[92kk k100lt 193214]

K100s are also known for this around 4000rpm.

Bolts and mountings not just engine but also ancillary like shocks etc etc be sure torqued up correctly.
If any engine/gearbox mounting bolts were ever out check the shims are put back correctly.
Balancing carbs [throttle bodies in case of the K but same thing].
Plugs and service help. Plugs in particular.
Tyres
Ignition timing on the K can be tweaked by moving the Hall Sensor plate [crankshaft position sensor] to alter timing advance. While this can make the bike feel more responsive it can also affect any secondary vibration in a positive or negative way. Helps to know what sort of engine speed the ICU computer puts the timing on to full advance.

[SteveR]

As Tramp said..... Carbs do need checking now and then.
All Transalps are prone to feel bit buzzy if the front tyre is worn, but this doesn't sound quite right, as the tyre vibes are more speed related.
As a quick and easy fix, get some Grip Puppies. Bloody brilliant on vibey handlebars (thumbs)
If not already on the xvr.org forum, have a look there through the HUGE database of messages and threads.

[zimtim]

Do as suggested
Carbs, frame bolts n nuts etc.
I was reading on another forum where the guy fills his handle bars with a silicone sealant helps add weight and suppose adds some vibration absorption properties

[qcnr]

Thanks for all the suggestions. Just glad it isn't sunny this weekend otherwise
I would have to be out painting the house. Now I can spend time in the garage. :woohoo: :laugh: (thumbs)

[gooseneck]

Do as suggested
Carbs, frame bolts n nuts etc.

I was reading on another forum where the guy fills his handle bars with a silicone sealant helps add weight and suppose adds some vibration absorption properties

Better still...silicon Sealand mixed with lead shot..works a treat.

[sprintster]

If it didn't vibrate before but does now it probably does need the carbs balanced.I'm not an expert but it always says in Haynes manuals that you should check and adjust your valve clearances before balancing the carbs.

[qcnr]

Well I nearly got as far as dissasembling the bike to check the valve clearances.
Going to take off the crankcase inspection plugs after having removed everything else
and of course the largest one is stuck on with superglue or something...
Unfortunately the allen key slipped and has buggered the hole :S so before going any further need to get a new one.
Brilliant... :S