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Post by greendivvy on Jul 29, 2011 18:11:24 GMT
Is it a hex key to remove these and what size please?, dont seem to have anything that fits...lol
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Post by m40man on Jul 29, 2011 18:18:27 GMT
I think they are the same as the 900 - in which case, 8mm hex.
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Post by CD on Sept 1, 2011 14:44:06 GMT
The 600 bar end weights are rubber mounted which seems to defeat the object of having them.
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Post by amorti on Sept 2, 2011 8:16:37 GMT
The 600 bar end weights are rubber mounted which seems to defeat the object of having them. On mine they were threaded direct into the end of the handlebar? They are rubber mounted on most Hondas, I don't really understand enough about resonances to know why but they do still work. |
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Post by showaddydadito on Sept 2, 2011 9:05:30 GMT
I'd always supposed they were rubber mounted to give a bit of cushioning/forgiveness on those occasions when the bar ends contact something (like a wall). The resonance of the weight on its rubber mount is so very far removed from the resonance of the front end of the bike that the rubber mount will not affect their purpose to any noticeable amount.
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Post by CD on Sept 2, 2011 9:46:06 GMT
I thought bar ends are supposed to damp vibrations by their mass effect absorbing the energy. Rubber mounts in the bars ends would surely be pointless. But Yamaha do some odd things.
The 900 has threaded in bar ends but to be honest they are really not very heavy. I fitted Rox anti vibe risers to solve the problem.
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Post by bobh on Sept 2, 2011 13:22:15 GMT
It's all to do with Laplace Transforms (he said, tapping the side of his nose).
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Post by amorti on Sept 2, 2011 14:04:47 GMT
It's all to do with Laplace Transforms (he said, tapping the side of his nose). Dunno about that, it sounds expensive  I think the ones on a honda which are rubber mounted don't eliminate vibes (what can?) but they do reduce the frequency to a slower vibe which is less tingle-inducing. |
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Post by showaddydadito on Sept 2, 2011 15:05:41 GMT
With this sort of damping it's not the mass absorbing the energy - it's the mass changing the resonant frequency of the system. Rubber actually helps because floppy things don't vibrate whereas rigid things do.
Like sticking a bit of blu-tak up the inside of the woman-next-door's wind chimes.
I've got some old Laplace Transforms in a cardboard box somewhere. I think they're whitworth or BA - you can have them for the postage.
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Post by CD on Sept 2, 2011 18:04:02 GMT
Surely rubber at the bar to top yoke mount will damp some vibes and the inertia of weights on the bar ends stop them swinging so far. Who knows if I am getting confused with my Lovelace Transvests.
BTW, I think the 600 uses M6 socket head bolts to attach the bar end weights.
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Post by bobh on Sept 2, 2011 21:23:05 GMT
I think earlier 600's used rubber and M6 bolts, the later ones were the same as the 900, i.e. screwed directly into the end of the bar. Not sure when the changeover took (La)place.
Quite a few Yamahas seem to use the type of weights that screw directly in, which smacks of trying to find a one-size-fits-all solution when you'd think that what works on, say, a TDM twin would maybe not be quite right for an R6 with clip-ons.
The Tenere has these too, stuck in the end of its Renthal-lookalikes, though with a thumping great 660 single you really wonder why they even bother trying. I could probably lose the best part of a Kg of top hamper if I ditched them - and it would be easier to wangle the bike through the shed door. Little job for the weekend?
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