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Old 02-24-2013, 09:41 AM   #16
bmwrench
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Do you have the correct crush washer under the neutral switch? The correct item is thicker than a conventional one.
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Old 02-24-2013, 12:37 PM   #17
ME 109 OP
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Quote:
Originally Posted by bmwrench View Post
Do you have the correct crush washer under the neutral switch? The correct item is thicker than a conventional one.
I assume so bmwrench, it came with the switch.

disston, I don't need/care for the light. It was just a matter of fixing something that was broken, except nothing is broken.
I do remember when recently changing bearings etc, that the switch was pushed in when in neutral. It has a pre '76 part in there.
My options are to leave the wire disconnected as has been the case for 13 years, or get a pre 76 switch.

It is difficult to see in the posted pics but I looked at them and others that I took, and compared with the parts on Antons site.
I do believe the part is wrong, hence the problem.

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Old 02-24-2013, 12:41 PM   #18
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It looks like you have the earlier cam on the shift mechanism. The later one has a detent for the neutral switch button.
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Old 02-24-2013, 04:24 PM   #19
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ME109,
maybe the person who worked on your transmission 13 years ago decided he liked your late shift mechanism and swapped you?
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Old 02-24-2013, 06:29 PM   #20
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Quote:
Originally Posted by Xcuvator View Post
ME109,
maybe the person who worked on your transmission 13 years ago decided he liked your late shift mechanism and swapped you?
That scenario has crossed my mind.
The guy was/is a known racer/wrencher.
I can only assume his rep is worth more than a quicker gear change.
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Old 02-24-2013, 07:06 PM   #21
Max Headroom
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Hey Jeff, you realise that the crank is now out of warranty?

Ninety feet or ninety seconds, whichever comes first. It's my special "Golden" warranty for aussies . . . .


Quote:
Originally Posted by ME 109 View Post
Gidday Nick, I didn't see your post.

snip

PS. I've been looking after that beaut crank you sent me by exceeding 8 grand every so often.
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Old 02-24-2013, 08:06 PM   #22
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Quote:
Originally Posted by Xcuvator View Post
ME109,
maybe the person who worked on your transmission 13 years ago decided he liked your late shift mechanism and swapped you?
Some people like how the earlier ones shift compared to the later ones. I can't understand why but . . . .
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Old 02-24-2013, 08:56 PM   #23
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I don't think the shift update is quicker at all. I noticed that it was a longer throw when I put one in. I think the deal with the shift cam that got more pointy is that the roller has less of a tendency to hang up in the middle causing a false neutral. And the improvement of the pawl is supposed to help prevent a broken pawl spring, but apparently doesn't eliminate it completely. I think there is more to it than my simple explanation.

I don't have that trans in my bike right now but someday it will be back.
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Old 02-24-2013, 09:24 PM   #24
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Quote:
Originally Posted by ME 109 View Post
That scenario has crossed my mind.
The guy was/is a known racer/wrencher.
I can only assume his rep is worth more than a quicker gear change.
You have the original mechanism thats what my 81 was built with.
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Old 02-25-2013, 12:30 AM   #25
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Quote:
Originally Posted by 100RT View Post
You have the original mechanism thats what my 81 was built with.
Apparently, until mid '81, the old style was factory spec.
Mine being 9/81 should have the new one.

Either way, there is the pre 76 neutral switch cam to explain. I did notice that the little weld job had been done to hold one of those cams in place.
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Old 02-25-2013, 01:15 AM   #26
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Quote:
Originally Posted by supershaft View Post
Some people like how the earlier ones shift compared to the later ones. I can't understand why but . . . .
As it turns out that I have the antiquated shift system, I can only surmise that the new mechanism is something to behold.

I say that because my shifter is as quick as I need it to be. No false neutrals, positive up and down shifts.
Achieving said affinity with my shifter does come down to almost precise positioning of the shift lever tho'
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Old 02-25-2013, 05:00 AM   #27
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My friends 82 R100RT also had the old shift mechanism. I dont know the build date.
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Old 02-25-2013, 05:14 AM   #28
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IIRC, BMW began installing the shift kit for the production year 1983. We installed shift kits under warranty in '81-'82 bikes if the customer complained about shifting problems. This is moot as far as the neutral switch is concerned since they used the same neutral switch from 1976.

It's my opininon that the shift kit was needed because of the lack of flywheel in the '81 and later bikes. I'm not a big fan of the shift kit; it raises lever effort, and I'm lazy.
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Old 02-25-2013, 08:34 AM   #29
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Cool2

Well, TO ME, from the first pic......I thought the shift "valleys" looked deep.
Thanks for the responses, as I have also learned.
I LOVE this place.

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spo123 screwed with this post 02-25-2013 at 04:22 PM Reason: grammer, misspelling
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Old 02-25-2013, 10:41 AM   #30
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I can see you have the early 3-4 cam, so it takes the old switch.

I also see what appears to be a 1974 casting date on the shifter frame. I really doubt it sat in inventory until 1981 before being used.
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