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Old 12-10-2012, 08:39 PM   #1
igormortis OP
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Interesting GS pic...

Anybody know about this particular bike? At first glance it looks standard, but a few interesting bits are lurking...



- forks (is that a G/S bottom clamp?)
- wheel hub
- brake rotor
- passenger footpeg mount
- torque arm

Anything else? Aside from missing springs, the center stand looks different to me also.

Pic says 1987 - prototype maybe?
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Old 12-10-2012, 08:53 PM   #2
Airhead Wrangler
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You missed the drain and fill plugs on the swingarm. Yes, the paralever was originally designed to be a wet swingarm. Forks look to be Marzocchi M1s. Front hub appears to be machined rather than cast. Probably before they had their casting tooling made.
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Old 12-10-2012, 08:56 PM   #3
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Quote:
Originally Posted by Airhead Wrangler View Post
You missed the drain and fill plugs on the swingarm. Yes, the paralever was originally designed to be a wet swingarm.
I was gonna mention it, but thought it was cheating 'cause I wasn't sure I could see them...
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Old 12-10-2012, 08:58 PM   #4
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Hub looks quite complex, but looks like it would do away with some weight of the production disc carrier.
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Old 12-10-2012, 09:15 PM   #5
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Quote:
Originally Posted by Airhead Wrangler View Post
You missed the drain and fill plugs on the swingarm. Yes, the paralever was originally designed to be a wet swingarm.
What years/models were they "wet"?
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Old 12-10-2012, 09:25 PM   #6
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Originally Posted by Big Bamboo View Post
What years/models were they "wet"?
None - only seen on pre-production bikes. Presumably it was nixed for liability reasons - that rear boot just waiting to spew oil over the rear tyre.

I am curious if anyone runs a wet paralever - I bet there's someone out there... Oil may not play nice with the shaft damper material though.
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Old 12-10-2012, 09:25 PM   #7
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Quote:
Originally Posted by Big Bamboo View Post
What years/models were they "wet"?
Prototypes only. Everything that got sold was dry. Look at the parts fiche. It still shows the fill plugs on the swingarm. 88 and 89 models have the raised flat on the swingarm where it was never drilled for the plugs. They eliminated it later, but you can still see where the tooling was modified to eliminate them on the later ones.
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Old 12-10-2012, 10:36 PM   #8
Mark Manley
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I wish my GS was still that clean, it makes me want to get out there with the polish.
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Old 12-10-2012, 11:25 PM   #9
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I wish my GS was still that clean, it makes me want to get out there with the polish.
makes me want to get out there & pour some mud over that bike

800ccs what were they thinking. Noone could rid a bike that powerful off road
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Old 12-11-2012, 12:22 AM   #10
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No cross over in the exhaust headers No return springs in the centrestand.
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Old 12-11-2012, 05:04 AM   #11
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Those appear to be the rims that run tubeless tires- weren't they in production later (when the oilheads came out)?
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Old 12-11-2012, 05:31 AM   #12
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Originally Posted by Noswal View Post
Those appear to be the rims that run tubeless tires- weren't they in production later (when the oilheads came out)?
No, the GS's all had the spoked tubeless type rims. There are some tires that you have to run tubes though ... Heidenau K60 front comes to mind ..
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Old 12-11-2012, 08:57 AM   #13
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Is that a Basic?
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Old 12-11-2012, 11:19 AM   #14
igormortis OP
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Is that a Basic?
Nope, a pre-production R80GS, by the looks of things. Close though.

Quote:
Originally Posted by Beater View Post
There are some tires that you have to run tubes though ... Heidenau K60 front comes to mind ..
Do tell. I've run a front K60 tubeless.
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Old 12-11-2012, 02:29 PM   #15
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It might not be a real BMW but a BMC:

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