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1975 BMW R90S Restoration

The place to discuss the R 90 S as well as the R90S Worldnet archives!
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schrader7032
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I'm not near my bike, but I

Post by schrader7032 »

I'm not near my bike, but I believe my /7 has some glued on bumpers to sit against the frame. The left side cover is captive due to the handle and can't fall off. The right side however could let loose and be lost. Yes, there is a set of rubber rings or bands that hold the covers together...see #4 here:

http://www.realoem.com/bmw/enUS/showpar ... Id=46_0052

I have been using for many years a small piece of nylon rope/string to tie the two together. Plus, on the right cover, I've added a small black zip-tie to further secure the cover where the string connects. I've seen another approach which is to glue to the inside of the cover near one of the frames a small plastic block which has a tiny loop/ring on it. Then you can use a zip-tie around the frame to secure the cover.
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.

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skychs
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side covers

Post by skychs »

Thanks Kurt .....

All good advise. I like the plastic block suggestion. I will look into that.

For now, to keep the covers from being loose and vibrating I used rubber washers and grommets. The grommets on the loops of the frame keep the covers from rattling. The rubber washers glued to the inside of the covers keep it from rattling against the frame. Temporary for now until I come up with something better. What a horrible design from BMW. Wow.

May sound crazy but I enjoy this kind of problem solving. It may or may not work long term but its certainly more fun than reading the darn manual for everything.
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1966 R60/2, 1967 R69S, 1975 R90S, 2020 R1250GSA

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schrader7032
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I haven't given the side

Post by schrader7032 »

I haven't given the side cover design much thought...hasn't been an issue for me. In terms of "horrible designs", there are others that are far worse and might have significant consequences. You have no experience with the /7-on filter canister setup...the /6 oil canister was bullet proof. They changed the design and it's now referred to as the $2000-oring because if not checked and done right, it can ruin the engine. So pick your battles as to bad designs! :D
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.

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skychs
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electrical

Post by skychs »

Today I installed the exhaust and the two carbs. After that I took the top triple tree back off because I forgot to run the turn signal wires from the headlight bucket through the ears and out the turn signal post. What a PITA. In hindsight it was best because the wires were a mess and needed to be replaced. While I was in there I also replaced the clutch safety switch wire because it had broken off at the switch. All the other wires seemed to be fine. So now ..... the final touches to the wire harness. Everything is falling into place except the Instrument cluster harness. For the life of me I can't find the correct routing. Nothing seemed to work so I quit for the night.

Tomorrow I will start installing all the cables and possibly the handlebars and controls. There is a local handlebar that may be an inch or two wider than the one I have which may be a little more comfortable.
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1966 R60/2, 1967 R69S, 1975 R90S, 2020 R1250GSA

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ksiemon
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Side Covers

Post by ksiemon »

For all new to the /6 bikes. From the first /6 to mid year 75 the covers had NO Rubber Washers. The later ones that did, and with good "Rubber Bands" kept them in place. A lot of right covers fell off due to the crappy rubber used in the bands (they rotted before your eyes!)
The new stuff is good, and you can get everything to up-date or replace your cover rubbers. Just keep a eye out on the bands, keep a spare in the took kit and swap out if they start looking bad.

Rubber Ring. 63 12 1351414 $3.00 ea.
Rubber Washer 4mm thick Top 46 63 1233524 $.49 ea.
Rubber Washer 11mm thick Bottom. 46 63 1233525 $2.43 ea

The washers are 18mm wide, the numbers and pricing is from "Bob's"


(Was going to ad pics but it won't let me?)


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schrader7032
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Quote: (Was going to ad pics

Post by schrader7032 »

(Was going to ad pics but it won't let me?)
You've added pictures before on other posts...shouldn't be an issue with this website. Unless you're trying to link in pictures from some other website...there might be restrictions from that website.
Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.

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skychs
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Original side covers with cut out

Post by skychs »

I should have looked at my old photos of the original side covers. Here they are.

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1966 R60/2, 1967 R69S, 1975 R90S, 2020 R1250GSA

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skychs
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Cables

Post by skychs »

Today I will be working on all the cables and hand controls. Im really struggling because I can't find anything in the books or manuals on how to route this stuff. I took a ton of photos while I was taking everything apart but it didn't capture every position or turn of the cables. I find myself looking over the photos for hours tracing each cable. If anyone has any insight or diagrams of the cables it will be greatly appreciated.

In regards to the hand controls. Most of that is coming together. Im still struggling with the little "wedge" that fell out of both of the Magura grips.

Ill try to post some photos later.

If I can get all the cables and hand controls in Id be really close to connecting the battery and seeing if it will fire up.
1966 R60/2, 1967 R69S, 1975 R90S, 2020 R1250GSA

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JakeF
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Cable routing

Post by JakeF »

The cable routing is a tight mess. I had the same issue as you. I searched the internet and could find nothing to assist me. I ended up going to the local dealer who had a R90S in their collection and tried to use it as an example but what I have found is that after looking at a couple of other R90S no two were exactly the same. Best bet would be to find another R90S owner in your area who will let you look at their bike. Sending photos is of no help because of the complexity and density of the routing. If you can't find another reference bike my suggestion is to trust your instinct and follow the path of least resistance when routing.
JakeF
1956 R69, 1976 R90S, 2008 R1200GS

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ksiemon
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The Pres...........

Post by ksiemon »

Mac Kirkpatrick's bikes are in the 90S book...........is he OK? still in the club? It shows he's the President? All the 90S boy's are asking for help........what gives?

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