new airhead project!!

[cueball]

picked a 1975 r60/6 today . missing some bits, incorrect valve covers, rear signals & no telling what else. however, it runs ok, will run great after some tweaking, & i'm thrilled to get it !! (had an r50/5 in the early 70's & loved it)
here are some pics. hope you won't mind my asking for help on this project. i'm not sure if i should keep the supertrapp system---any thoughts??

anybody got a grab handle, seat rail, correct valve covers, tank emblems & rear turn signal set up??
frank

[cueball]

another pic

[cueball]

sorry, can't help it!!

[kixtand]

Ahh yesss....the R60 w/ the much sought after front drum. Nice looking purchase all 'round from what I can tell.

Good luck--

kix

[P B G]

did someone rattle can the whole engine silver?

[halmc]

Originally Posted by cueball

another pic

Hey, what's all that crap in your garage? Kathy's right: you need to clean it out.

[cueball]

Originally Posted by P B G

did someone rattle can the whole engine silver?

no, the po actually had it & the frame powdercoated (appears to be true--much tougher than paint), then quit the project when his wife got sick. it actually looks like a new engine more so than one that has been coated.

[cueball]

Originally Posted by halmc

Hey, what's all that crap in your garage? Kathy's right: you need to clean it out.

shhhhhh!!

[jellycow]

Originally Posted by kixtand

Ahh yesss....the R60 w/ the much sought after front drum.

Why is the drum much sought after? I'm thinking about replacing it with double Brembo's on my 60/6.

[P B G]

Originally Posted by jellycow

Why is the drum much sought after? I'm thinking about replacing it with double Brembo's on my 60/6.

The drums actually work really well.

If you think about it the 70's are about the peak of drum brakes. Everyone was switching to disc, but the early bmw discs aren't the greatest, hence all the talk about converting single disc or dual ate's to brembo or what not.

Properly adjusted dual discs work well but so do properly adjusted/bedded drums, and with better period aesthetics.

[Kismet]

The drums work very well when used to stop FORWARD movement.

I'd been riding slash 6s and 7s when I came upon a 70 R75/5. Awful shape, but young in miles. Brought it home, did the stuff you have to do.

But I park my bikes in sheds that I drive into, and then "walk" backwards to get out, and down a slight slope. Never a problem with the discs.

Imagine my surprise when I found that ?leading shoe? drum brakes don't stop BACKWARD movement.

Only took...er...ten or twelve instances before I caught on.

Loved that engine/tranny combo. SWB wasn't a problem for me.

Congratulations. You will make yourself very happy.

[dlrides]

Originally Posted by jellycow

Why is the drum much sought after? I'm thinking about replacing it with double Brembo's on my 60/6.

I would be interested in your drum set-up ! I prefer the drums over the early disc.

[P B G]

Originally Posted by Kismet

Imagine my surprise when I found that ?leading shoe? drum brakes don't stop BACKWARD movement.

You should try a band brake minibike sometime ;)

You learned something special, these brakes are Dual leading shoe, the concept being that as the drum and shoe interact the rotational force of the drum actually grabs the shoe and puts more pressure on it increasing brake force.

But in reverse the rotation of the drum counteracts your hand actually you end up with a dual trailing shoe set up in that instance, which is never found on a vehicle. Since a single leading shoe design requires one cam that actuates two shoes, a dual leading shoe requires two cams (or hydraulics) to drive the leading edges of both shoes which are on opposite sides. To make a dual trailing is equally compled as dual leading!

Anyway that's part of the set up of these brakes is that you have to have both cams set up to get shoe contact with the drum equally, and you wnat the majority of the shoe touching the drum when in operation, not just a tiny portion of the tip. That's where bedding brake shoes comes in. Once adjusted they are just good lucking.

[Wirespokes]

Is that true that these drum brakes don't work well in reverse? I don't ever recall having a problem, but then again, I never developed much need for lotsa brake in reverse.

[P B G]

Originally Posted by Wirespokes

Is that true that these drum brakes don't work well in reverse? I don't ever recall having a problem, but then again, I never developed much need for lotsa brake in reverse.

The better the shoes are adjusted the better they will work in reverse. That being if you have little contact and its all at the leading edge then the brake will fight your hand. If however you have pretty good surface contact when you brake there will be enough surface area on the shoe to do a decent job.

Just need a turn table/lazy susan in your shed to spin them on. I use a peice of plastic and a rope to turn mine in the garage.