Twin leading shoe rear brake options

[HMBAtrail]

For a race bike application has anyone used a TLS rear brake plate? For example, a front brake plate from a Honda CB 160? The 160 uses the same shoe diameter (160mm) and width (30mm). It would require a bit of mill and lathe work for sure but has anyone wandered down this path in the past?

[Duccout]

I don't know if there would be any advantage over the Ducati rear brake, as anything better will just lock up under weight transfer.

[Eldert]

the Honda CB160 uses a 180 mm brake . fits a Ducati fronthub with minor mods .

we are looking in to machining rear hubs out of billet and use the Honda CB 160 brakeplate .



Eldert

[Jordan]

Honda CB72/77 had TLS rear brake, on the same side as Ducati.

[Eldert]

correct but its a 200 mm brake and has a 20 mm rear axle and the hub has no cushdrive for the sprocket .

Eldert

Honda CB72/77 had TLS rear brake, on the same side as Ducati.

[Eldert]

CB72/CB77 rearhub modified to 15mm rear axle and made a housing on the hub to accept the ducati sprocket carrier with cush drive .

INCA 001.jpg

Eldert

[blethermaskite]

Ok, so I have sorta done this.........I was brought up on old "black British bikes" which in general had very poor brakes, the usual factory method used to enhance braking was to fit a 2 foot long rear brake pedal . this kinda worked but it left the rider with a life long bad habit of being a bit heavy on the back brake. So a number of years ago I owned a narrow case 250 ex race bike "put back on the road" it had been fitted with I think an oldani 2ls rear brake which to put it mildly was excessive for road use and to make thing worse my well trained heavy brake foot resulted in me throwing the machine down the road on a wet day.......I ended up relining the shoes with the most rubbish cheap linings I could find which made things a little more easy to live with.
I later owned an Aermacchi 250 road bike which I converted into a road going racer, during the build I fitted the grimeca 180mm double sided front brake, this left me with the original standard 2ls Aermacchi front brake plate which handily fitted straight into the standard macchi rear hub thus giving me a 2ls rear brake........guess the result? far too much brake effect on the rear wheel for a road going bike, very nearly lost it a couple of times with as already mentioned weight shift under heavy braking making the back wheel skip.........this one I fixed with a light spray of WD40 on the linings .
Frankly if its a road bike you are working on this conversion/modification will look great but will be pretty dodgy on the road in my opinion.
Cheers,
George

[HMBAtrail]

I don't know if there would be any advantage over the Ducati rear brake, as anything better will just lock up under weight transfer.

I have had some on-track adventures where additional stopping power would have really come in handy.

[HMBAtrail]

the Honda CB160 uses a 180 mm brake . fits a Ducati fronthub with minor mods .

we are looking in to machining rear hubs out of billet and use the Honda CB 160 brakeplate .



Eldert

I thought the CB160 used a 160mm plate but the 175 used the 180 brake plate. I could be (and quite likely am) wrong on that.

[HMBAtrail]

Ok, so I have sorta done this.........I was brought up on old "black British bikes"

Frankly if its a road bike you are working on this conversion/modification will look great but will be pretty dodgy on the road in my opinion.
Cheers,
George

That was pretty damned entertaining to read. You paint quite the picture!

To your last comment, I was thinking about this for one of the race bikes and not for a road going bike. I race a modern KTM 390 and on that bike I rarely ever touch the back brake except to tighten up an apex a bit (or if I've run off track and am in the grass). But when racing the 350 and 450 both I tend to use some back brake in the braking zone at the end of the straight. On the 450 I have a Ceriani 4ls brake and on the 350 I have a modified 2LS brake from a Honda CL450. I don't think my single leading shoe rear brake is what's keeping me off the podium and eluding a seven figure contract. But if it can provide some extra shuttling and looks pretty neat in the process then . . .

I was just wondering if anyone had done it to a race bike or not. Seems the consensus is that it offers little and can potentially go pear shaped.