Bad vibes

I think he bought it on e-bay

For me this really doesn't sound recognizable. I have had (see signature) three 2 inlines, a 3 inline, a 4 inline, a V twin, a V four and a boxer. The triple was super smooth, the V four was pretty smooth too but did have buzzy spots causing some tupperware resonance at certain RPM. Dito on the 4 inline. The twins were totally different than the four cilinders. No buzzy, numbing spots at all. The V-twin was really a smooth thumper, the boxer was shaking all over the place. At idle you couldn't use the mirrors, in contrast to the Harley V-rod I was next to once at a traffic light. But this didn't numb any body parts... if anything it would wake them up. I remember riding a K100RS (flat 4) once. Even though everything was suspended in rubber (pegs, bar) it still felt like you were holding 2 vibrators while riding.

My TDM is also very smooth. It does feel enough like a twin. But even with the (legal) Superpole mufflers and the aftermarket handlebars without the bar-end weights, it doesn't buzz. The bar would get into a severe wobble when I let go of it before, but with the new tires under it (Conti Road Attacks) it doesn't wiggle or wobble at all. Didn't change any vibe feeling though.

I use a throttle rocker, which enables me to relax my hand almost continuously when desired. Been riding for 15 years now, I don't hold tight to anything (tank / bar) really. It might be a factor...

I think all 4 cilinders have these numbing buzzy RPM ranges, twins are not buzzy at all. They just thump a lot more, but I have never found that bothering (unlike the buzzy RPM spotsz on the 4 cilinders, that was quite ticklish ).

Wicky – what sort of silicone did you use? And is there any other advice you would offer.
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hello friend, i would investigate the silicone option carefully as apparently some sealants can "attack" or cause premature corrosion on metals, this was what ET told me, i did not research it and just pumped in the silicone i found in me shed but that was 4 years ago and so far so good.


aye like i need that fer me man boobs !

No vibes at all on mine, I've always thought it was quite a smooth engine once you're above 3000rpm. My bike has standard exhausts and handle bars, etc.
I 'd take it back to the dealer and ask them to check the throttle body synchronisation, if thats out of spec then one cyclinder will be firing a little harder than the other which could lead to vibes.

Have now done a quick bit of googling on handlebar vibes and found this product:
http://www.barsnake.com/

The Bar Snake is a precisely gauged cylinder composed of a high-tech polymer which, when properly installed inside tubular handlebars, dampens many high frequency vibrations that cause numbing, painful and even dangerous hand and wrist trauma.

30 USD plus 20 dollars postage - might be worth a punt.

my only query is whether there is any wiring or any other gubbins going through the handlebars on the TDM. Was going to look at the weekend but spent most of my time standing in the rain a Kart track in kent watching an endurance race.

Edited by BigC, 14 May 2007 - 09:05 am.

Has anyone got any feed back on what they have done to combat this?

Cheers, Ivan

I have used a barsnake on a previous bike (Ducati Multistrada) which had horrid vibes and numbed the hands with 15 minutes on the freeway. It worked wonderfully and made the bike pleasant to ride. Installation of the barsnake was simple and took no more than 15 minutes. My TDM 850 has a slight vibe issue I am hoping to cure by purchasing another barsnake. I have a 1992 TDM (US model) and need to know what diameter the stock '92 TDM bars are. Can anyone confirm?

22mm outer diameter, 7/8" in old money

Studley - where would this forum be without you? Thank you so much!

The bars on my MK1 850 are filled with silicone too. Easy job, take the bar ends and the switchgear off. Seal up the holes where the switchgear sits on the bars with duck tape. Then cut the end off a tube of silicone from your local DIY Emporium, wedge it tight in one end of the bars and keep pumping it until it comes out of the other end of the bars. Clean the threads where the bar ends go, leave the whole lot overnight, reassemble and go ride with less vibration from the bars.

a tube like this:



Will be more than enough, make it a big cut on the tube too so the silicone is easier to pump in.

Edited by hammerman, 17 April 2012 - 08:35 pm.

Yep,

I did the silicone trick too,

when I got the new bike, I noticed it straight away I had forgotten how bad it gets.

Next day the Gun was out.

Cheers, Ivan