New disc brake slider

speirmoor · Feb 14, 2012

Nice work Madass!

swooshdave · Feb 14, 2012

ludwig said:
For you sir , I take my hat off !

I can count on one finger the number of times ludwig has been impressed with someone's efforts.

davamb · Feb 14, 2012

madass140 said:
You may have seen the Sach Madass bikes, usually available in 50cc and 125cc
I have 2, one is the 50cc model ...I converted this one to DOHC and 125cc, top speed 80mph

Pics in one of the off-topic forums please Madass?

madass140 · Feb 14, 2012

I posted a pic of the 125 DOHC bike in "other bike related....."

B+Bogus · Feb 16, 2012

swooshdave said:
ludwig said:

For you sir , I take my hat off !

Click to expand...

I can count on one finger the number of times ludwig has been impressed with someone's efforts.

Funniest post I've seen in ages - excellent!

madass140 · Feb 18, 2012

"I saw this in Old Bike, you may find this mag a possible forum for some of your products?
Cheers Richard"
thanks Richard, not sure if that mag was around when about 5 years ago, anyway I just made a subscription to the
mag, hope they arrive.

madass140 · Apr 24, 2012

Well hope to start casting the new fork sliders for the 320mm / 6 piston caliper project in the next week or so, the mold is now made, Regarding the disc design, I was thinking more along the lines of the drilled hole type , more older style than the now popular slotted or wave type, what do you think??

Onder · Apr 24, 2012

Well which work better?
Visually prefer the drilled not the wave.
For most of us fossils, even the drilled is
worryingly edgy!
Any ballpark timeframe for availability?
Id be interested.

jeffdavison · Apr 24, 2012

For a dual disc I prefere the wave for functional reasons... less weight. I like the aesthetics also , gives a more open looking frot, but that will also depend on which calipers are used.
For a single disc system the non wave is more appealing as it give a more "massive" looking front with a spoked rim.

.02

JD

Bernhard · Apr 24, 2012

Onder said:
Well which work better?
Visually prefer the drilled not the wave.
For most of us fossils, even the drilled is
worryingly edgy!
Any ballpark timeframe for availability?
Id be interested.

Don’t know if it ever occurred to any of you but a large undrilled disc on the front wheel will be sensitive to strong gusts of side winds, its called the Bernoulli effect;

swooshdave · Apr 24, 2012

Bernhard said:
Onder said:

Well which work better?
Visually prefer the drilled not the wave.
For most of us fossils, even the drilled is
worryingly edgy!
Any ballpark timeframe for availability?
Id be interested.

Click to expand...

Don’t know if it ever occurred to any of you but a large undrilled disc on the front wheel will be sensitive to strong gusts of side winds, its called the Bernoulli effect;

I'd be more worried about the wind hitting the large mass that's called the "I'm-an-old-fart-look-at-my-Commando" effect.

madass140 · Apr 24, 2012

its a single disc set up, please look at previous posts to see the caliper
thanks for the opinions

Hobot · Apr 24, 2012

I vote Gafier Wave type rotors in single version myself. Lets the breeze through and more light weight edges for pads to work against

madass140 · May 10, 2012

Heres a couple of pics of my sample casting for my new 320mm disc/6 piston caliper/new slider brake upgrade.
ready to be machined. I made the rear fender mount a bit wider to hold the fender stay out a bit to help clear the caliper.
regarding disc design, check earlier post, still undecided on design, I prefer the older drilled style for a 70's bike.
help me make up my mind.

Brooking 850 · May 11, 2012

Drilled single one for me Don as opposed to the wave.
If I went for twin waves i would need two up front!!!
Regards Mike

RennieK · May 11, 2012

I'm used to seeing a spiral pattern on drilled discs. The sample looks a little stagnant so I'm liking the wave. I might like the drilled style if it had that spiral drill pattern that's so common.

Kvinnhering · May 12, 2012

Please go for spiral pattern on drilled discs.

madass140 · May 12, 2012

Ok, its going to be a single disc set up to fit the Norton hub, I doubt I'd be doing a twin disc set up.not soon anyway.
Thanks for the opinions I hadnt considered the spiral holes option, I was trying to do 2 types, maybe just the spiral holes
design will be the winner on its own. I'll make a final decision in the next day ot two, so production can start. the disc will be specially made to bolt directly to the Norton hub, no adaptor plate, same as the 6 piston caliper, no adaptor plate.

madass140 · May 15, 2012

Here is the 320mm disc for the new brake , settled on this hole pattern, production starting directly.

john robert bould · May 15, 2012

madass140 said:
the Norton hub doesnt really lend itself to the idea of twin discs, in the past I remember seeing a fore and aft twin disc setup , not sure if it was on a Norton or Triumph, not my cup of tea and I certainly wouldnt be going that way.
For twin discs you would need a different hub, Its not my plan to go twin discs, my plan would be to have a single disc kit available consisting of slider, rotor, and probably caliper, which would all bolt to or replace exixting items with out modifying anything, people want bolt on parts straight out of the box that fits, no messin about. Master cylinder of their own choice.

Fore and aft disc where triumph,before they made a "proper" opposite leg, Slippery sam racer had the set up, ....one side pulling the slider and the other pushing...errrrm? But they where good enough to win race's :?: