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Old 07-16-2010, 08:18 AM   #1
Ridin'nFishin OP
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3rd Gear Problems 1996 R1100GS

Just bought my first BMW and I love it and I am going to fix it.

Here I am just a few weeks ago the day I picked it up.



How many people have had the same problems with their GS? I am wanting to see if this is common or not for the 1100 GS.

I saw this on Anton Largiader’s website: http://www.largiader.com/ and this describes exactly what my bike is doing.




edit: 2-25-2011
I hope that others that are newbie's with these old BMW's will find this tread before they do what I did, go into the tranny 2 times before I figured out what the problem was.

If you have a older BMW, check to see what transmission you have in it. If it is not a M97 start looking for one or be ready to ship the parts to someone to undercut the gears. They skip gears because they are not undercut.

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"My bike 'skips' in third gear...
...almost like the ignition cuts out momentarily, or some gear is skipping a tooth." You need transmission work. This can happen to any gear, but usually second or third suffers first. People will try to tell you the shock coupling in the transmission is slipping from one position to the next... hogwash. It's not possible. What's happened is that the shift dogs have rounded off and a shift fork is bent. The gear is only engaged by the rounded part of the shift dogs, which let the gear slip off and bear against the fork. That in turn springs the gear back into engagement the next time the dogs line up a fraction of a revolution later. The problem can start with a bent shift fork (from dropping the bike on the shift lever, etc) or with rounded dogs (from too many missed shifts or half-shifts). It can also start from poor initial assembly of the transmission, whereby there was never enough shift dog engagement in a particular gear.
You can be certain you have this problem if the oil is an iridescent gold color when you drain it. The gold is the surface of the shift fork wearing away; normally there is absolutely no wear on the shift forks regardless of mileage. Thin slivers of metal that you find will be from the edges of the shift dogs.
Bottom line is, it needs to be repaired. The problem will get worse and you will damage the shift drum. A good rebuild brings M93 and M94 transmissions nearly to M97 spec. Nearly, meaning that the engagement dogs are straight and five out of six bearings are 'clean.' There will still be one open bearing and an M94 will still have O-rings, but neither difference is significant.
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Ridin'nFishin screwed with this post 02-15-2011 at 07:12 AM
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Old 07-17-2010, 07:42 AM   #2
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What do you think?

Maybe some of you could give me some insight on what else I might have to do to my GS or about my current transmission problem.

I have already changed all the brake lines and bought brake pads, just not installed yey.

I will be tearing down my bike in the morning and will bring the tranny to a local shop to rebuild for me.

I don't like my bikes to be down, I want to ride!

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Ridin'nFishin screwed with this post 07-17-2010 at 06:15 PM
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Old 07-17-2010, 07:52 AM   #3
Galen
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My 96 GS did this in 2nd gear at 12K in 2000. I had it rebuilt to near M97 specs (BMWNA covered the parts as "good will"), but now it's skipping in 5th gear with only 28K on the bike. Transmission's out and heading to the bench. I'm probably going to attempt to repair it myself this go 'round--when I find some time. But, if I find a good used M97 in the meantime... or a cheap used GS with non-transmission issues (missed a couple local ones a couple months ago)...
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Old 07-17-2010, 08:32 AM   #4
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Interesting

Thanks for your input.

I wonder what else I should change while in there.
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Old 07-17-2010, 06:31 PM   #5
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I had a used RT trans in my GS for a while and it did exactly what you describe. I wouldn't suggest you fool with it yourself. Get it to someone who can fix it properly, like Anton.
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Old 07-17-2010, 06:40 PM   #6
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Quote:
Originally Posted by slartidbartfast
I had a used RT trans in my GS for a while and it did exactly what you describe. I wouldn't suggest you fool with it yourself. Get it to someone who can fix it properly, like Anton.

Thanks,

I'm going to pull it tomorrow and bring it to a local shop on tuesday. Or do you think it is a specialized thing that I should send it to Anton?
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Old 05-02-2012, 08:22 PM   #7
Murkidi
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">

Hello Calvin , was the noises from your tranny like this on, in case yo don see the video here are the link

http://youtu.be/Wz9f33e5Tc

regards!!!

manuel...
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Old 05-03-2012, 07:29 AM   #8
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Manuel,

I did not have any noises, just a 3rd gear skip.
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Old 03-03-2013, 09:58 AM   #9
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Resurrecting and hijacking the thread... Does anyone have a transmission that's wrecked/toast that may yield a decent pair of split collets for the input shaft?
Bike is a '98 R1100R. Bearing was worn, as was the geared portion of the damping unit. Nothing as bad as the picture on largiader's website though. That's now sorted and shimmed. All new bearings on the shafts, but I need a serviceable pair of those collets...
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Old 03-03-2013, 11:29 AM   #10
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Quote:
Originally Posted by Ghiribizzo View Post
Resurrecting and hijacking the thread... Does anyone have a transmission that's wrecked/toast that may yield a decent pair of split collets for the input shaft?
Bike is a '98 R1100R. Bearing was worn, as was the geared portion of the damping unit. Nothing as bad as the picture on largiader's website though. That's now sorted and shimmed. All new bearings on the shafts, but I need a serviceable pair of those collets...
Sup mate!

I might be able to help ya. Just let me know exactly what you need (maybe with pics). I don't know what a collet is :(

Cheers!
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Old 03-03-2013, 02:05 PM   #11
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Hi switch - the two hardened semi-circular parts that retain the bearing... Rear part of the input shaft. That is, the opposite end from the splined 'driven' end of the shaft:
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Old 03-04-2013, 07:58 AM   #12
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Sadly, I don't think I have any small bits left. Mostly just cogs and shafts.

You mean something like this?

http://en.wikipedia.org/wiki/Retaining_ring

If so, I think you're good getting a high-quality compatible part. Checking RealOEM.com for the correct specifications is useful.
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