engine vibes.
- Thread starter birdseye
- Start date
Emperor Norton
Guest
Again, friends: It's all due to an untidy synchronisation, believe me. Towards the end of a service interval (after 5k mls or so) the boxer tends to develop a noticeable imbalance which is the deeper cause of the vibrations. There is only one way to get rid of them: calibrate the valves and synchronise the engine properly.
BigOz
Guest
I mentioned this on first service as mine has a noticeable rise in vibration at 4000 rpm I thought I was just holding tight as my fingers went numb as well but it still does it even though I am more relaxed. Reminds me of an old BSA 650 I had. I just thought the vibration must be normal .
Howard Millichap said:The boxer engine is balanced in as much as both pistons whizz in and out in opposition to each other BUT they're not in line. One cylinder is slightly behind the other. So there is a "rocking couple". And it's this imbalance that has to be eliminated by the balancer shaft.
Because it would seem that BMW haven't got their sums right and there is some vibration left. It will tend to vibrate more when you feed more power through because the cylinders do not fire together so a big bang on one side of the rocking couple will be felt more than a small bang.
Hope I've explained it in simple enough terms.
Why aren't they in line? Harley do it using forked rods , and they have a better reason for not doing so (one cylinder shielding the other from air flow). After all, if BMW can copy the front suspension system from a British company (not to mention the basic engine design) why not a con rod from the USA?
jeff garnett
Registered user
birdseye said:
Joyseeker
Registered user
some pay alot of money for that
I had the same problem after the 600 service. Turned out to be a bad 1st service the Tech hadn't set the valve clearances properly.
bgregor
bgregor
bryn jones
Registered user
engine vibes
Having the same vibration problems myself through hands and right footpeg. I have done 2500 miles and the problem was there from the start. Mentioned it at first service, maybe engine still tight. Taking it back to dealer this saturday.
Has anyone had the same problem cured? What was the cause?
Everthing else about bike is great but vibes!!!!
Having the same vibration problems myself through hands and right footpeg. I have done 2500 miles and the problem was there from the start. Mentioned it at first service, maybe engine still tight. Taking it back to dealer this saturday.
Has anyone had the same problem cured? What was the cause?
Everthing else about bike is great but vibes!!!!
Scoomacher
Guest
My bike was considerably more vibey after the 600 mile service too and I mentioned it to the dealer.some while later after I waited to see if it setted down.
The bike is due back soon to deal with the 'known problem' of front brake squeal and they are going to evaluate it at the same time when they do the mod for the brakes (they were waiting for bits from BMW).
The bike is due back soon to deal with the 'known problem' of front brake squeal and they are going to evaluate it at the same time when they do the mod for the brakes (they were waiting for bits from BMW).
kevind55
Guest
vibes
my bike suffered the same "vibe" problem. At first service dealer had to change the rear diff and said this would cure problem. Just done 2500 miles on the continent and NO it hasn't cured the problem. Will be taking bike back and hopefully they will resolve.
Apart from the vibes the bike is brill.
my bike suffered the same "vibe" problem. At first service dealer had to change the rear diff and said this would cure problem. Just done 2500 miles on the continent and NO it hasn't cured the problem. Will be taking bike back and hopefully they will resolve.
Apart from the vibes the bike is brill.
Howard Millichap
Registered user
Engineer said:
Probably because every component right through the drive train would EXPLODE due to the massive torque.
Also would be as difficult to start as a (very) big single. The starter motor would have to be (even) bigger! etc.etc.
Howard Millichap
Registered user
birdseye said:
Because BMW know best...........don't they?
Howard Millichap
Registered user
bgregor said:
How much per hour did you pay for that?
Howard Millichap
Registered user
birdseye said:
See....you've answered your own question. Should have bought a Tiger.
Howard Millichap said:See....you've answered your own question. Should have bought a Tiger.
Howard
Getting bored are we...?
Refer you to this months RiDE mag (page 18)
Re 2006 Triumph Tiger
Quote;
In an competative class, the Tiger's not moved forward much. BMW's R1200GS is a clearly superior bike, trumping (should be trumpeting...
) the Triumph in every area except price tag.Go on............ spend a little more on what you really want then you can be a happy biker and not have to keep coming back for a glimpse of what you should have done in the first place.....
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