Interesting GS pic...

igormortis · 12-10-2012, 08:39 PM

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?

Airhead Wrangler · 12-10-2012, 08:53 PM

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.

igormortis · 12-10-2012, 08:56 PM

Quote:

Originally Posted by Airhead Wrangler

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...

igormortis · 12-10-2012, 08:58 PM

Hub looks quite complex, but looks like it would do away with some weight of the production disc carrier.

Big Bamboo · 12-10-2012, 09:15 PM

Quote:

Originally Posted by Airhead Wrangler

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"?

igormortis · 12-10-2012, 09:25 PM

Quote:

Originally Posted by Big Bamboo

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.

Airhead Wrangler · 12-10-2012, 09:25 PM

Quote:

Originally Posted by Big Bamboo

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.

Mark Manley · 12-10-2012, 10:36 PM

I wish my GS was still that clean, it makes me want to get out there with the polish.

Padmei · 12-10-2012, 11:25 PM

Quote:

Originally Posted by Mark Manley

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

Box'a'bits · 12-11-2012, 12:22 AM

No cross over in the exhaust headers

No return springs in the centrestand.

Noswal · 12-11-2012, 05:04 AM

Those appear to be the rims that run tubeless tires- weren't they in production later (when the oilheads came out)?

Beater · 12-11-2012, 05:31 AM

Quote:

Originally Posted by Noswal

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 ..

Stagehand · 12-11-2012, 08:57 AM

Is that a Basic?

igormortis · 12-11-2012, 11:19 AM

Quote:

Originally Posted by Stagehand

Is that a Basic?

Nope, a pre-production R80GS, by the looks of things. Close though.

Quote:

Originally Posted by Beater

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.

tofgasp · 12-11-2012, 02:29 PM

It might not be a real BMW but a BMC:

12-10-2012, 08:39 PM	#1
igormortis ^OP Beastly Adventurer Joined: Dec 2006 Location: Wellington, New Zealand Oddometer: 1,082	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? __________________ Operation: Battle Panda

12-10-2012, 08:53 PM	#2
Airhead Wrangler More tacos than you Joined: Mar 2008 Location: Manzanillo MX, occasionally Seattle Oddometer: 5,123	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. __________________ R80ST Gets The HPN Treatment Ducati Pantah 500SL Rebuild Seattle to TDF on an airhead WTB R100R Mystic sidestand and mount.

12-10-2012, 08:58 PM	#4
igormortis ^OP Beastly Adventurer Joined: Dec 2006 Location: Wellington, New Zealand Oddometer: 1,082	Hub looks quite complex, but looks like it would do away with some weight of the production disc carrier. __________________ Operation: Battle Panda

12-10-2012, 10:36 PM	#8
Mark Manley Somewhere else Joined: Apr 2010 Location: Heading East Oddometer: 373	I wish my GS was still that clean, it makes me want to get out there with the polish. __________________ If it's in the Touratech catalogue then you don't need it No man is an island, except for the Isle of Man

12-11-2012, 12:22 AM	#10
Box'a'bits In need of repair Joined: Sep 2008 Location: Wellington, New Zealand Oddometer: 1,434	No cross over in the exhaust headers No return springs in the centrestand. __________________ My '91 R100GS thread is here My Ride photos are here It's just better when there's twins involved....

12-11-2012, 05:04 AM	#11
Noswal Adventurer Joined: Jun 2009 Oddometer: 60	Those appear to be the rims that run tubeless tires- weren't they in production later (when the oilheads came out)?

12-11-2012, 08:57 AM	#13
Stagehand +/- V TDSPP Joined: Oct 2004 Location: "Poughkeepsie?!?!" Oddometer: 19,941	Is that a Basic? __________________ What to do... What to do...

12-11-2012, 02:29 PM	#15
tofgasp Adventurer Joined: Mar 2008 Oddometer: 58	It might not be a real BMW but a BMC:

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