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Author Topic: Modern rearsets and drum brakes  (Read 474 times)

Offline bbqb4racin

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Modern rearsets and drum brakes
« on: Mar 30, 2018, 19:16:29 »
I see this subject has been brought up before but there wasn't much for results. I faced the same problem in my build and found a decent/working solution. I built a 920 Virago shaft bike. They've got the ugliest, bulkiest foot rests ever! I was determined to not mod or use them in any way possible. But the bike had a drum brake to deal with too and I really wanted to run modern rearsets. Problem solved! An automotive clutch slave cylinder was the answer. Here's a pic from early on during the build:



It works flawlessly with the GSXR rearsets installed on my Virago. Just throwing this out there in case you're determined to run rearsets and have a drum brake to deal with. BTW, I have some really good info on the GSXR/Virago rearset install if anyone is interested. No more bulk, guaranteed!
Builder/fabricator

Online Hurco550

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Re: Modern rearsets and drum brakes
« Reply #1 on: Mar 30, 2018, 19:44:15 »
 Nice man. Looks great!

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Offline jpmobius

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Re: Modern rearsets and drum brakes
« Reply #2 on: Mar 30, 2018, 20:00:07 »
That's a really novel solution.  I am surprised you have enough volume from the master to have enough throw without having the drum adjusted really tight.  Is your master from the gixxer?  Wouldn't mind seeing pics of the completed setup.  Is that heim joint on the slave or is that the brake stay behind it?
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

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Offline bbqb4racin

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Re: Modern rearsets and drum brakes
« Reply #3 on: Mar 30, 2018, 20:14:19 »
That's a really novel solution.  I am surprised you have enough volume from the master to have enough throw without having the drum adjusted really tight.  Is your master from the gixxer?  Wouldn't mind seeing pics of the completed setup.  Is that heim joint on the slave or is that the brake stay behind it?

Volume was a concern of mine for sure. After a thorough bleeding I was relieved that it worked perfectly with no issues. I rarely use rear brakes anyway but surprisingly the pedal felt great when I tried it out on the road. Zero effort to engage the rear brake. I have two videos on the GSXR rearset install and there is also a mention of this brake setup in the second video. Here are the links:





Almost forgot, master is from a GSXR and yes, that is a heim joint on the slave.
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Offline DanielK

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Re: Modern rearsets and drum brakes
« Reply #4 on: May 04, 2018, 01:11:37 »
This is great! From which car is that slave cylinder? Not easy to find info about direction.


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Offline bbqb4racin

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Re: Modern rearsets and drum brakes
« Reply #5 on: May 07, 2018, 22:16:09 »
Look up "Wilwood" clutch slave cylinder. The real ones are in the $80 range, knockoffs around $40. I think I got mine on eBay
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Online irk miller

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Re: Modern rearsets and drum brakes
« Reply #6 on: May 07, 2018, 22:41:25 »
Cool setup, but the way you worded your opening statement suggests you couldn't get the modern rear set to work with the drum brake.  Is this correct?  Or did you just prefer to use the slave cylinder?  I've used GSXR rear sets on a couple of bikes with a drum rear by converting to a cable pull, and I've also converted a couple drum brake hubs to disc by machining a carrier and casting a urethane cush.  Essentially, it works like a cush hub rear sprocket but it's the brake side instead.