returning to Drum Brakes

[Motorhead]

Well after a long thought I returned to drum brakes

what do you think with a 900cc motor with R90S internals and 5 speed tranny and a 32/11 final drive

then I been thinking of going to SWB for FUN

what do you think?

[Garnet]

Just remeber how much fun the front drum is in the rain. Other than that it all sounds good.

[Motorhead]

Yeah I remember and the brake system is better than before as the new type of shoes are in the front

works better then the shose on the early days Of Red.......................

[Roy Gavin]

Problem with drum brakes is that they are not progressive.

To be effective there has to be a degree of float in the shoe, so that most of the shoe moves into contact with the drum

When you get it right there is a self servo effect and the brake shoe pulls itself onto the drum, so the braking effect is not proportional to the lever pressure.

Liquid on the lining actually makes the servo effect worse - the 8"front on my BSA B44 VS locks the wheel with the slightest touch in the wet.

[Deleted User 287]

Liquid on the lining actually makes the servo effect worse - the 8"front on my BSA B44 VS locks the wheel with the slightest touch in the wet.

That doesn't sound good at all.

[Sam LP]

I'm going to SWB with my R90/6 for the same reason as you. I've got later discs, brake calipers (and forks) on mine though. I like the looks and simplicity of drum brakes though. I'd like to see pictures of your progress.

[Motorhead]

Hummmmmm
I thought about that as I removed my Disc system I weighted the Disc wire wheel and disc and it came about 8 lbs heavy over the drum

and I took the time for maintace I have these days ,and decided the whole tomato, I had gatherd parts over the years serviced them before storeing for 1 day MAYBE......

I plan to use a R65 subframe and orginal SWB swingarm

I have a 10 toes pan to make a Solo seat , and I'll keep the 6.2 gallon /7 tank and I took like the look of the rear fender close to the battery


I have what I wanted most on my /5 the POD with the resetable trip meter, and 1 key for all the locks and switch, and a headlight bucket that uses the market Bosch 7" H4

[Deleted User 287]

I plan to use a R65 subframe

Do you need one? I have a spare, sitting in a box.
Rob

[Motorhead]

Yes I do have a R65 sub frame and swingarm already

I just have to cut the taps I won't need then repaint and sand and pant the swingarm
hope the shift parts and peg I need for modication shows up before the weekend

[Roy Gavin]

Liquid on the lining actually makes the servo effect worse - the 8"front on my BSA B44 VS locks the wheel with the slightest touch in the wet.

That doesn't sound good at all.

You get used to it, and get in the habit of applying the brake ever so slightly frequently to keep the drum warm and dry.

The drum on the B44 is a massive lump of cast iron, and the wheel weighs more than the single disk G/S front, although I suppose the weight of the caliper must come in to the calculations somewhere.
Works better than the disks on any of my Beemers, but it doesnt have a lot to slow down - the Victor is less than 300lbs with a full tank.

I