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Old 03-05-2013, 07:00 PM   #1411
AKjeff
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Joined: May 2006
Location: Carson Valley
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Nice build, good luck with the inspection.
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Old 03-05-2013, 07:03 PM   #1412
bgoodsoil
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Location: Washington, DC, USA
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Nice! Good job on the budgeting. Wish I had built my bike rather than buy it but I didn't know how back then. The front looks kinda tall, are you going to do any leveling on the suspension?

Wow, how did you get it down to 347? If you don't mind my asking, how did you weigh it? It sounds lower than what I've heard these things are.
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Old 03-05-2013, 07:45 PM   #1413
Muddy3
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Joined: Mar 2005
Location: Estes Park
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Quote:
Originally Posted by bgoodsoil View Post
Nice! Good job on the budgeting. Wish I had built my bike rather than buy it but I didn't know how back then. The front looks kinda tall, are you going to do any leveling on the suspension?
Wow, how did you get it down to 347? If you don't mind my asking, how did you weigh it? It sounds lower than what I've heard these things are.
I thought the forks looked tall in that photo too. Sits pretty level in my garage. Suspension will take a bit of sorting. I've only got an hour or so of off-road riding on this bike. I've owned 3 R100gs's over the years and my impression so far is that this bike is light years ahead of a stock GS in off-road handling and I think that I can make it better.

I used a set of aircraft scales to weigh it. About 10 years ago I built and flew a competition aerobatic airplane. I still have the sign in my garage from when I built that plane that says: 10lbs x 10g's = an airplane that sucks. You have to look at every piece you add as an opportunity to cut weight. Remember, by the time I add 6.4 gal of fuel we're talking 390lbs.
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Old 03-05-2013, 07:55 PM   #1414
bgoodsoil
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Did you do the gussets yourself?
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Old 03-05-2013, 08:15 PM   #1415
Muddy3
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I cut all the gussets, tack welded them in place and had Advanced Alloys in Longmont, CO do the final welding. Those guys are unbelievable! They specialize in aircraft parts.
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Old 03-05-2013, 08:29 PM   #1416
Airhead Wrangler
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Joined: Mar 2008
Location: Back in Seattle, FINALLY
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Quote:
Originally Posted by Muddy3 View Post
347lbs with oils but zero fuel.

Really? How'd you weigh it?
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Old 03-05-2013, 08:37 PM   #1417
Kokopelli
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Wow, that's one of the really good looking bikes. I'd put it in the top 5 that I've seen.
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Old 03-05-2013, 10:39 PM   #1418
bgoodsoil
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That's a nice pile of parts! What did you do for the triples? What are you running your springs at?
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Old 03-06-2013, 04:19 AM   #1419
Stagehand
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sub 350 is pretty amazing for a paralever. The only parts that look like they're not stock heavy as crap is the forks.

I'm going to have ot re-weigh the PD somehow.

CUrious as to why you'd use 800's in a 1000 motor unless you had better access to the 800's.


what rear shock?


YES I WANT TO TWIST IT IN ANGER!
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Old 03-06-2013, 04:57 AM   #1420
hardwaregrrl
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Joined: Jan 2006
Location: Atlanta
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Quote:
Originally Posted by Stagehand View Post
what rear shock?


YES I WANT TO TWIST IT IN ANGER!


Wow! Looks sweet, Muddy. My bike will never look that nice but that because I ride the shite out of it. Come back in a few months with a pic after you do the same, oh it's gonna be fun!! Paint or powdercoat on the frame?
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Old 03-06-2013, 06:08 AM   #1421
jonnykilo
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Joined: Oct 2006
Location: East Coast Canada
Oddometer: 204
Quote:
Originally Posted by Muddy3 View Post
Colorado State Patrol Inspection tomorrow morning. It's a great little "parts" bike:
Modified 1989 BMW R100RT Mono-lever Frame. HPN style frame gussets throughout.
1992 R100GS motor with 800cc cylinders and 32mm Bings.
Paralever Swingarm.
YZ450F front end.
347lbs with oils but zero fuel.
Built for around $2500.

Very nice. How did the Colorado Insp go?
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Old 03-06-2013, 07:18 AM   #1422
Ras Thurlo
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Location: Hillcountry, Italy
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sweet bike for $2500

Quote:
Originally Posted by Muddy3 View Post
It's a great little "parts" bike:
Built for around $2500.

Ras Thurlo screwed with this post 03-06-2013 at 02:10 PM
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Old 03-06-2013, 11:15 AM   #1423
Rapid Dog
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Location: Strangel Living West of Hell
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Thumb

Quote:
Originally Posted by Muddy3 View Post
Colorado State Patrol Inspection tomorrow morning. It's a great little "parts" bike:
Modified 1989 BMW R100RT Mono-lever Frame. HPN style frame gussets throughout.
1992 R100GS motor with 800cc cylinders and 32mm Bings.
Paralever Swingarm.
YZ450F front end.
347lbs with oils but zero fuel.
Built for around $2500.

...Thaaa-t's what I'm talkin' about!
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Old 03-06-2013, 04:44 PM   #1424
supershaft
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Quote:
Originally Posted by airhead wrangler View Post
really? How'd you weigh it?
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Old 03-06-2013, 05:04 PM   #1425
Pezz_gs
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Joined: Nov 2004
Location: Sydney Skunkworks
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Quote:
Originally Posted by Airhead Wrangler View Post
Um.... yeah... and good luck finding a forks and a wheel that won't hit the engine:

Gee there is a flash back

I bought an R100RS rolling chassis and Motor and gearbox (now in my R80G/S) to build a bike, R1100RT Swingarm wheels. I was measuring and checking, but the change in offset of the shaft in the swingarm necessitated moving the right swiangarm pivot out a fair way, approx 15mm.

We had an R1 frame and did some playing, as I didnt own the frame we just mocked it up

The engine would have fitted in but needed to come up in the frame further. The loops on the frame would have needed to be removed and the swingarm pivot raised accordingly. We contemplated cutting at the weld above the pivot, and machining a new pivot much higher.

It looked cool but a lot of work and got to the point of being easier to build a completely new frame and swingarm.
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