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Author Topic: BMW R90/6.. un-farkle to re-farkle  (Read 2687 times)

Offline Hurco550

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BMW R90/6.. un-farkle to re-farkle
« on: Aug 14, 2017, 20:59:55 »
I was debating on posting a thread up here, but eh why not. About a month and a half ago I was on the way home from fishing when this 1976 Beemer caught my eye. It was sitting back off the road in a guys driveway with a barely noticeable for sale sign on the back saddlebag. (Perhaps that on top of the fact that the guy never advertised it is the reason he said he had a hard time selling it). The guy who had it was an older gentleman that had been riding airheads since the early 60's, and this was one of 4 he had in his stable, including one really well done /5 with a Volkswagen air cooled lump in it.

Anyways picked this one up for a reasonable price, with nearly 90k miles on the ticker and trimmed in full 70's touring garb. Lufmeister fairing, complete with vetter cyclesound radio (with cassette) wixom hard bags, crash bars with highway pegs, and a luggage rack hanging way out back, with all the glass painted and striped to match.

I had been wanting a vintage airhead for a while. My good riding buddy Al used to put alot of miles on along side me on his r75 and I wanted one ever since.

As i brought it home.



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Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline Hurco550

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Re: BMW R90/6.. un-farkle to re-farkle
« Reply #1 on: Aug 14, 2017, 21:07:52 »
I am not doing anything crazy custom on this bike, but doing a bit of maintenance and losing at least some of the 70's flair (read losing the kind queen and lufmeister fairing). I'd like to put some miles on this thing and have it respectable enough for a vintage bike night or meet up. It has been repainted, and the job wasn't done perfectly, but its better than I can do myself or pay someone else to do, so it will stay, along with the hard bags and crash bars. Luckily for me, the fairing used the factory bmw headlight and turn signals, so it was a fairly straight forward removal and I don't have to spend much $$ on expensive bmw parts. Just pulling it off made the bike so much better looking imho. I also picked up a plexifairing3 for $5 at mid Ohio so I'll have some wind protection without the outdated look and it weighs about a metric ton less to boot. It will need some scratches sanded and polished out, but I can handle that.


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Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline Rider52

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Re: BMW R90/6.. un-farkle to re-farkle
« Reply #2 on: Aug 14, 2017, 21:08:34 »
Nice score!
Projects
74 Yamaha TX650
Sweep the Floor Project
3 Assorted Honda CL 72 scramblers in a million pieces
3 Harleys in constant state of sorrow and a Buell
1978 Yamaha Chappy 80 burning up the highway
Cut my motor in half Sportster to Shortster

Offline Hurco550

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Re: BMW R90/6.. un-farkle to re-farkle
« Reply #3 on: Aug 14, 2017, 21:12:39 »
 next up is that king queen seat. It's comfy, but it sets me a little far forward, and looks like a dumpster fire, so I'm going to try to make some bracketry to fit a Harley police solo seat. Luckily, I don't think it says Harley on it anywhere, so I should be good ;) my wife doesn't care to ride, so I'm going to ridesolo. See what I did there Cory.. ill also likely make up a nice luggage rack to sit behind the solo seat and above the rear fender to take up that space.



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Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline Hurco550

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Re: BMW R90/6.. un-farkle to re-farkle
« Reply #4 on: Aug 14, 2017, 21:17:38 »
I rebuilt the Bing carburetors as it was only running on one cylinder at idle. I could have gotten away with a clean up and o rings, but I figured I'd better do it right so a couple kits from bing were ordered. Left hand pilot was completely clogged.

All cleaned up and rebuild with a little polishing on the caps.



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Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline VonYinzer

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Re: BMW R90/6.. un-farkle to re-farkle
« Reply #5 on: Aug 14, 2017, 21:18:03 »
Yuppie
Like a river that don't know where it's flowin'
I took a wrong turn and just kept goin'

Offline Hurco550

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Re: BMW R90/6.. un-farkle to re-farkle
« Reply #6 on: Aug 14, 2017, 21:24:11 »
Nice score!
Thanks man!

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Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline trek97

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Re: BMW R90/6.. un-farkle to re-farkle
« Reply #7 on: Aug 14, 2017, 21:27:00 »
Yup, lookin way better without the fairing.  8)
And I couldnt agree more w loosing that monster seat.

Offline Hurco550

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Re: BMW R90/6.. un-farkle to re-farkle
« Reply #8 on: Aug 14, 2017, 21:43:24 »
The top end has to come off as the push rod seals are dried up and cracked. Hit my first snag when removing the right hand side exhaust nut. Every bit of bmw airhead maintenance literature I've read says (usually in bold) to make sure to copper anti seize the exhaust nut. Evidently one of the p.o.'s didn't get the memo. The left hand side came loose no problem, but the right hand side had no such luck.  On kanticoys advice, I just went ahead and cut the nut. The threads will clean up to usable with a little work with a thread file. That probably wouldn't have been the case had I forced it off and I'd likely be looking for a new head. I think ill get by for a while with just a hone to break the glaze and put it back together. I've got 140 cold psi compression on each side.



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Keep er' Between The Ditches!!!

1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1973 Ironhead Hardtail: http://www.dotheton.com/forum/index.php?topic=68135.msg788081#msg788081
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"Two strokes are the motorcycle equivalent to Thors chariot. Full of glory and memories of battles victorious" ~ von yinzer

Offline irk miller

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Re: BMW R90/6.. un-farkle to re-farkle
« Reply #9 on: Aug 14, 2017, 22:28:11 »
I can't believe you're going to ruin it by getting rid of the fairing and seat.  Such a shame.