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TOPIC: Drum brakes for drum heads

Drum brakes for drum heads 14 Apr 2019 17:08 #802129

  • Trackerkz650sr
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Question

I degraded from disc to drum on my 78 sr
Basically im wondering if someone with a drum brake foot pedal could show me how theyre linkage sets up?

Im going to modify my "disc" pedal to actuate the drum


Now i do have it mocked up and working
However my main question is
Can the arm on the drum be pushed and or pulled to achieve proper braking?

How i have it set up now is what i beleive backwords from most drum set ups ive seen
My rod pushes towards the rear of the bike to acctuate the brake

It does stop like this. Just want to make sure im not asking for a mechanical failure

Which way does your stock kz drum operate
Rod pushing forward or rod pushing towards the rear?


Thanks yall

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Drum brakes for drum heads 14 Apr 2019 17:22 #802132

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The drum brake leveler has to be pulled.

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Drum brakes for drum heads 14 Apr 2019 17:23 #802133

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The normal way is to pull. Pushing with a skinny rod is going to fail miserably. It will just bend.

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Drum brakes for drum heads 14 Apr 2019 17:37 #802139

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I do the drum to disk way on my Project bike.
Have to cut, adjust and weld the drum pull rod levler angle of the foot brake levler for the rear disk MC.
Here some pics:


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Drum brakes for drum heads 14 Apr 2019 19:39 #802151

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Appriciate the pics no doubt but i am going from disc to drum

Im interested in seeing stock drum set up linkage pictures

Also the rod i chose was much thicker than stock and i made barrels

It hasnt bent or flexed but i mainly dont want to go against the grain from a engineering stand point and end up locking my wheel up

As always Appriciate the responses none the less

Basically if i flip my pedal "barrel rod holder shaft" to the up position
Which allows the pedal to operate the brake rod in the natural "pull" position
It hits the swingarm


So im guessing the drum brake pedal and shaft has a different set up? Shorter in height maybe

Hope im making sense

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Drum brakes for drum heads 14 Apr 2019 20:46 #802153

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Drum brakes for drum heads 15 Apr 2019 03:40 #802157

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Trackerkz650sr wrote:
Basically if i flip my pedal "barrel rod holder shaft" to the up position
Which allows the pedal to operate the brake rod in the natural "pull" position
It hits the swingarm


Any pics of your rear brake Setup would be helpfull.
Here is my rear drum brake leveler Setup before i converted into disk brake.
It´s the same stock brake leveler before i have to modify the angle.


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Drum brakes for drum heads 15 Apr 2019 05:49 #802162

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The brake pedal is attached to a brake pedal shaft. I would install the brake pedal shaft, spring & other stuff from a 650B. As previously noted in your other drum brake topic, the 650B & SR have the same brake pedal, and from comparing their frames on EB, it looks like the pedal is attached in the same location, so it seems like a stock type conversion would be possible. for safety.



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Drum brakes for drum heads 15 Apr 2019 09:33 #802177

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Scriocco, why did you swap to disc? It's been my experience a drum rear brake actually is a more effective brake than a disc.

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Drum brakes for drum heads 15 Apr 2019 11:00 #802186

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I choose the drum for the proper look and feel for my build

If anyone has pics of theyre drum set up
Im interested in seeing where the rod attatches to the pedal shaft

Thats where im having confusion
To actuate the brake in a pull motion
The barrel that the rod goes into (pedal side)would need to be in the up position

When in the up position it hits the swingarm

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Drum brakes for drum heads 15 Apr 2019 18:01 #802205

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Here is a picture of my current set up.
Hope the pics are clear enough

U can see my brake shaft "circle barrel holder" is in the down position

It order for it to pull on the rod proper it would need to move upward
But when it moves upword to achieve the proper motion . the brake shaft (which the brake rod slides through the end of)
Hits the swingarm
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Drum brakes for drum heads 15 Apr 2019 20:21 #802212

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Here is the stock drum pedal. Looks like the brake pedal shaft (9) can be rotated.

www.partzilla.com/catalog/kawasaki/motor...1/stands-brake-pedal
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Last edit: by TexasKZ.

Drum brakes for drum heads 16 Apr 2019 05:48 #802226

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What swing arm is it? And what rear wheel & brake panel assy?
It might help to mention exactly all the drum related parts that have been installed. including wheel spacers.


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Drum brakes for drum heads 17 Apr 2019 10:24 #802291

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Martin no need to overcomplicate

Its a stock b drum swingarm
The pedal and pedal shaft are stock to the bike which is a sr (rear disc)


If anyone has pics of theyre stock drum pedal set up. That would be the most helpful

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Drum brakes for drum heads 17 Apr 2019 10:39 #802292

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There are a million 650 pics on the internet. do a search. that conversion is rarely done, so almost nobody can say if it can be done w SR parts. if it's not working, get the drum parts.
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Last edit: by H1Vindicator.
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