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#627604 - 11/27/15 8:18 pm brake lever on the other side of the drum brake  
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reverb Offline
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South cone
...hello; I have a 79 engine fitted in a 67 frame so I have a drum brake in one side and the foot lever on the other side.
First intent was done with a thick cable, but I did not like it; then I tried with the normal rod but pushing instead of the normal way...but this is not right; I really doubt that could work; so I m returning to the cable idea; however one concern is that not too much distance to generate the necessary "play" or "hang" in the lining (after done a stop there)of the cable to actuate.
---I m really interested to hear new ideas, improves, etc
I need to brake!

Thanks

Here couple of photos of what I have now:




#627640 - 11/28/15 5:19 am Re: brake lever on the other side of the drum brake [Re: reverb]  
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Allan Gill Offline
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Nothing wrong with the cable idea, in fact it is superior to the fact with a rod you would need the pull movement/pivot near the swing arm bolt. If the rod wasn't you would have a brake that applied itself when ever the swing arm moved. With the cable, as long as you ruling it near the swing arm it won't cause much of an issue.


beerchug
#627685 - 11/28/15 12:46 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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reverb Offline
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South cone
...yes, but imagine that the lining of the cable is what s act braking; so if the cable is straight I think would not work; hence my question about that the cable may be needs some curve or hang there like a the wheel chain.

#627693 - 11/28/15 1:26 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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Allan Gill Offline
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You have lost me, you would need a lug of some sort to support the cable outer at the swing arm end and near the pedal.


beerchug
#627702 - 11/28/15 2:23 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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kommando Online content
kommando  Online Content


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Or fit the earlier gearbox covers and gearchange lever and go back to the left foot brake.

#627741 - 11/28/15 6:11 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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reverb Offline
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South cone
...wise idea there; but I m unsure if I need to adapt something or is only change parts.

#627813 - 11/29/15 6:01 am Re: brake lever on the other side of the drum brake [Re: reverb]  
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kommando Online content
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Quote:
...wise idea there; but I m unsure if I need to adapt something or is only change parts.


Only you can know, get the 67 parts book and the 79 parts books and use the illustrations to compare, really depends on what butchery has been inflicted on the frame, as long as the brake lever bush is still part of the left rear engine plate then it should just be part changes, if not a new rear engine plate will be needed.

Not quite the right books but

78 parts book

http://classicbike.biz/Triumph/Parts/1970s/1978-Triumph-Parts-Manual-Bonneville-Tiger.pdf

66 parts book

http://classicbike.biz/Triumph/Parts/1960s/66Triumph650ccPartsManual.pdf

#628019 - 11/30/15 12:22 am Re: brake lever on the other side of the drum brake [Re: reverb]  
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DMadigan Online content
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Of course you would have to plug the cross-over shaft hole in the engine case and the primary cover (or get an earlier one) also.
If you keep the hydraulic master on the right you can put a slave on the drum arm to actuate it.

#628056 - 11/30/15 9:30 am Re: brake lever on the other side of the drum brake [Re: DMadigan]  
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Originally Posted By DMadigan
Of course you would have to plug the cross-over shaft hole in the engine case and the primary cover (or get an earlier one) also.
If you keep the hydraulic master on the right you can put a slave on the drum arm to actuate it.


The slave is a good compromise if you don't want a cable. Many bikes do have cable rear drums like older Ducati's and Norton Commandos and they seem to function ok.......I did rear set pegs on my T120 using reworked stock parts.I was told the brake pedal would kickback because of improper geometry ...It functioned perfectly on the bumpy backroads...Sometimes you just have to go out and try it....


650 Triumph modified production LSR record holder 133.1 MPH... Twin 650 engine Triumph LSR that goes sorta fast...
#628077 - 11/30/15 12:32 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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reverb Offline
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South cone
...I do not have an hydraulic master because only the engine is a 79 but I can install one; however I do not get it the way that slave would move the drum brake.

Thanks

#628093 - 11/30/15 1:59 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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DMadigan Online content
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The same way this one works, a pulling cylinder.

Or the brake arm can be inverted and a pushing cylinder can be used.

#628359 - 12/01/15 10:53 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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reverb Offline
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South cone

...so something like this is what I understood; is it correct?
It s a push one; I prefer a pull one but seems a bit more difficult to make; or still I do not get it?

Thanks


#628419 - 12/02/15 12:23 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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Jerry Roy Online content
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I'm not familiar with the parts you are talking about, but the English bike parts I have dealt with all had the brake shoe operating cam configured so that it would expand the shoes either way the arm was pushed. Which would maybe work in this case.
Dunno, just a thought.

JR

#628459 - 12/02/15 5:15 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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Allan Gill Offline
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I wonder if you could fit an internal cylinder, obviously with some modification. Maybe even an SLS drum brake would work better than the cable operated original conical brake.


beerchug
#628522 - 12/03/15 1:32 am Re: brake lever on the other side of the drum brake [Re: reverb]  
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reverb Offline
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South cone
...I evaluated to fit an internal cylinder but all the stuff that I found is too big to adapt there.

-Jerry Roy, the problem is not the parts is that the operation lever is in the other side...

#628539 - 12/03/15 4:50 am Re: brake lever on the other side of the drum brake [Re: reverb]  
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kommando Online content
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I have seen old Mini slave cylinders used on the outside of 8" TLS Conical hub brakes, they are small but maybe not small enough to fit inside.

#628579 - 12/03/15 12:17 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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Jerry Roy Online content
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Originally Posted By reverb
...I evaluated to fit an internal cylinder but all the stuff that I found is too big to adapt there.

-Jerry Roy, the problem is not the parts is that the operation lever is in the other side...


OK. When you mentioned the normal rod pushing, I assumed that you had the parts on the same side.
It sounds like a jack shaft from one side to the other is the only mechanical way you can do it, short of a cable.
But hydraulics have become easier with the proliferation of components over the last decade or two. When they are used on bicycles, you know they have arrived.

JR

#628616 - 12/03/15 5:01 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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DMadigan Online content
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Almost any setup is going to be custom unless there is enough demand to make building in quantity economical. I had a few people ask for the hydraulic cylinder for the comical brake so I made some.
I think the cam on your rear shoes is a bar with two flats to push the shoes into the drum. With enough space between the shoes a cylinder can be made to do the same. Mounting would require drilling holes in the backplate since none were required for the cam or finding some other way to kep the cylinder aligned. Otherwise it would have to be something on the outside.

#628789 - 12/04/15 7:44 pm Re: brake lever on the other side of the drum brake [Re: DMadigan]  
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chaterlea25 Online content
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Cork Ireland
Hi All,
In recent times there has been an explosion of makers of custom hydraulic components for special building
including pull cylinders to more or less directly repalce cables

Have a look at the images here and follow to home pages,

https://www.google.ie/search?q=motorcycle+hydraulic+clutch+conversion&tbm=isch&imgil=8j4e8n0FPtCuGM%253A%253BLB97ND0rObVStM%253Bhttp%25253A%25252F%25252Fwww.aliexpress.com%25252Fitem-img%25252FMotorcycle-brake-hydraulic-hydraulic-clutch-conversion-cable-to-change-the-hydraulic-system-efficient-transfer-pump-accessories%25252F1628532937.html&source=iu&pf=m&fir=8j4e8n0FPtCuGM%253A%252CLB97ND0rObVStM%252C_&biw=1120&bih=844&usg=__l3-ozAMuMZnYr9pGdl6JFsJNQSA%3D&ved=0ahUKEwjh4ImfrcPJAhVC8Q4KHetKAXgQyjcIKA&ei=_SBiVqHuF8LiO-uVhcAH#imgrc=8j4e8n0FPtCuGM%3A&usg=__l3-ozAMuMZnYr9pGdl6JFsJNQSA%3D

HTH
John

#629106 - 12/07/15 5:54 am Re: brake lever on the other side of the drum brake [Re: reverb]  
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markoz Offline
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Originally Posted By reverb

...so something like this is what I understood; is it correct?
It s a push one; I prefer a pull one but seems a bit more difficult to make; or still I do not get it?

Thanks



If you place this over a map of the south/west United States it shows where montezumas lost treasure is located. smile Sorry.

#629298 - 12/08/15 9:10 am Re: brake lever on the other side of the drum brake [Re: markoz]  
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Allan Gill Offline
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Originally Posted By markoz
Originally Posted By reverb

...so something like this is what I understood; is it correct?
It s a push one; I prefer a pull one but seems a bit more difficult to make; or still I do not get it?

Thanks



If you place this over a map of the south/west United States it shows where montezumas lost treasure is located. smile Sorry.


LMAO laughing


beerchug
#629299 - 12/08/15 9:13 am Re: brake lever on the other side of the drum brake [Re: kommando]  
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Allan Gill Offline
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Originally Posted By kommando
I have seen old Mini slave cylinders used on the outside of 8" TLS Conical hub brakes, they are small but maybe not small enough to fit inside.


The shoes on the TLS are similar to the moggie thousand, surely you might be able to adopt one of those. I would think even an hydraulic SLS would be better than the pressure required to make the cable TLS work properly.


beerchug
#629394 - 12/08/15 10:17 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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reverb Offline
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South cone
...that map was done with a pizza paper from the delivery guy and the tone+shadows of a direct lamp.

Still Im thinking about it.

#631780 - 12/26/15 4:57 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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Pete Suchawreck Offline
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Western NY
I have the same problem- 72 frame, 76 motor. So far I'm working on generation 2 jackshaft for the rr brake. I would be interested in a hydraulic setup, don't want to spend a lot...
My first generation setup had no problem with the suspension activating the brake, including off road.

#631787 - 12/26/15 5:23 pm Re: brake lever on the other side of the drum brake [Re: reverb]  
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http://www.ebay.com/itm/Hydraulic-Clutch...r-/230311922889

Something like this might work. The hose is 36" long-30" would be better

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