Results are in. I’ve just been for first rides with a Magura bar mounted MC driving my ATE single disk. Braking is significantly improved over the under-tank MC – at least 25% better braking, I reckon.
Nice thing is that the Magura costs about half the price of the refurb kit for the original MC (in Oz it is $190!!). And it looks like it’s meant to be there.
Here is the final result …
And here is a link to a thread on ADV that inspired the project
http://www.advrider.com/forums/showthread.php?t=742109
The Magura MC is a 13mm Series 225. Cost: US$87, from Amazon. There are other suppliers. A suitable brake light switch costs an additional $13.
http://www.amazon.com/Magura-Hydraulic- ... B001J8MSDE
Here’s how I went about it -
The mod is particularly suited to the 74 model with the /5 switch gear. My bike has the euro bars, which are a little narrow, so I lathed up some handlebar extensions. These add an extra 25mm each side, and are drilled and tapped for bar-end mirrors.
So, just hack off the brake lever part …
Bog and paint. I used thickened epoxy.
I had a local bloke make up a ss brake line – cost: $70.
Here's how the MC and throttle fit on the bars. The MC clamp is very close to the bend in the bar - thus the need for the extensions.
The verdict: Highly recommended. I am delighted with the result. I did have the old MC working well, using all the usual tricks. It was adequate for solo riding most of the time, but with a load or a passenger its shortcomings led to far too many arse-puckering close calls with cars and critters. Then there was the problem of the old one leaking and dribbling brake fluid all over the frame. This had obviously happened many times on mine over the decades, with resulting nasty rust pitting.
(Edited to add: I've just been for a decent ride and tested the brake further. The pads are now bedded in properly and I'm thinking that the braking performance is more like a 100% improvement. The difference is frankly astonishing!)
74 R90 – bar mounted master cylinder – how to
- Airbear
- Posts: 2886
- Joined: Tue Aug 03, 2010 10:02 am
- Location: Oz, lower right hand side, in a bit, just over the lumpy part.
74 R90 – bar mounted master cylinder – how to
Last edited by Airbear on Wed Oct 10, 2012 1:06 am, edited 1 time in total.
Charlie
and Brunhilde - 1974 R90/6
Graduate, Wallace and Gromit School of Engineering and Design (Pending)
and Brunhilde - 1974 R90/6
Graduate, Wallace and Gromit School of Engineering and Design (Pending)
Re: 74 R90 – bar mounted master cylinder – how to
NICE!
I've spent most of my money on women, motorcycles, and beer.
The rest of it I just wasted.
The rest of it I just wasted.
Re: 74 R90 – bar mounted master cylinder – how to
You've been very busy Charlie, Brunnies looking great!
New tank rounders too, woo hoo.
Man, she's. gonna look great covered in mud at the next Alpine.
New tank rounders too, woo hoo.
Man, she's. gonna look great covered in mud at the next Alpine.
Lord of the Bings
-
- Posts: 8900
- Joined: Tue Aug 03, 2010 1:46 pm
Re: 74 R90 – bar mounted master cylinder – how to
Looks great Charlie...well done. What else have you done to the bike? Matt black paint, new brake mc, ....
Cheers, Steve
Victoria, S.E.Oz.
1982 R100RSR100RS supergallery. https://boxerboy81.smugmug.com/R100RS
2006 K1200R.
1994 R1100GS.
Victoria, S.E.Oz.
1982 R100RSR100RS supergallery. https://boxerboy81.smugmug.com/R100RS
2006 K1200R.
1994 R1100GS.
Re: 74 R90 – bar mounted master cylinder – how to
Wow Charlie. Nice job.
Brunhilde is looking quite dapper. She must be feeling very pumped.
Brunhilde is looking quite dapper. She must be feeling very pumped.
Garnet
-
- Posts: 8900
- Joined: Tue Aug 03, 2010 1:46 pm
Re: 74 R90 – bar mounted master cylinder – how to
LED auxiliary lightsSteveD wrote:Looks great Charlie...well done. What else have you done to the bike? Matt black paint, new brake mc, ....
Custom headlight nacelle ears.
And that's just the stuff we can SEE.
MS - out
Re: 74 R90 – bar mounted master cylinder – how to
Looks very nice
Re: 74 R90 – bar mounted master cylinder – how to
Lookin good Charlie. New Brun. The lick of make-up won't hide her character.
Your brake conversion is a bloody bargain! Cost me about 5 x that a dozen years ago for mine.
Still probably the best modification I have made.
Next trick is the twin-disc set-up .... maybe a week off over xmas will mean I have some time.
cheers
mal
Your brake conversion is a bloody bargain! Cost me about 5 x that a dozen years ago for mine.
Still probably the best modification I have made.
Next trick is the twin-disc set-up .... maybe a week off over xmas will mean I have some time.
cheers
mal
Re: 74 R90 – bar mounted master cylinder – how to
Airbear, HOW did you fasten the extensions into your handlebars? Are they an interference fit...epoxy, or what?
Clemson, SC
R100s, R75/5
R100s, R75/5