ADVrider

Go Back   ADVrider > Bikes > Old's Cool > Airheads
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-26-2010, 02:37 PM   #1
Mendodave OP
Road Scholar
 
Joined: May 2005
Location: North Coast California, M/C Heaven!
Oddometer: 864
Adjustable brake levers?

Has anyone come across adjustable brake levers for the R80G/S?

I could squeeze (pun intended) quite a bit more braking out of the front if I had a better grip on the lever. I already have the stainless brake line, but still need more stopping power up front.

any tips/ideas gladly accepted.

Mendo
__________________
MSF RiderCoach
'81 R80G/S 'Moby'
'82 CT110 "Postie'
Mendodave is offline   Reply With Quote
Old 04-26-2010, 03:21 PM   #2
batoutoflahonda
Beastly Adventurer
 
Joined: Aug 2007
Location: Easton Wa
Oddometer: 1,362
I've got a stainless line and EBC Double-H Sintered brake pads. I think it stops pretty well. It takes some time for the pads to bed in, and work well once they start getting warm.

There is some newer brake pad technology out there. So if you do your home work you may come up with some thing that acceptable for you.

http://www.exoticsportbike.com/r80_g...2881-86%29.htm

Other than that, it may be possible to bend the lever a bit in a vice. I'm not sure about BMW levers, but Honda OEM dirt bike levers will take a lot of bending before they break. I agree on the lever being back more tho. Also, not sure about your back ground, but there are a lot of folks out there that don't use the rear brake, or are timid about it. Because a dual sport usually has a soft suspension set up, it dives a bit. I like to hit that rear brake to get the suspension to squat then get on the front, or use them at the same time.
__________________
It's eight and a half gallons of gas; and an engine. What more do you need?-- BMW R80G/S

Save lives. Legalize lane sharing.

Cow eyes don't glow.

batoutoflahonda screwed with this post 04-26-2010 at 03:32 PM
batoutoflahonda is offline   Reply With Quote
Old 04-26-2010, 07:38 PM   #3
bmwrench
Beastly Adventurer
 
Joined: Nov 2006
Oddometer: 1,939
I've done this mod for people with short fingers: Remove the lever and clamp the pivot blade in vice soft-jaws. Apply heat with an acetylene torch. Heat gently and keep trying to bend the lever. Eventually, the lever will bend easily. Don't get carried away with the heat or the bend. Reinstall to see if you got it right. When satisfied, repaint.
bmwrench is online now   Reply With Quote
Old 04-26-2010, 08:13 PM   #4
Mendodave OP
Road Scholar
 
Joined: May 2005
Location: North Coast California, M/C Heaven!
Oddometer: 864
yeahbutt

Quote:
Originally Posted by bmwrench
I've done this mod for people with short fingers: Remove the lever and clamp the pivot blade in vice soft-jaws. Apply heat with an acetylene torch. Heat gently and keep trying to bend the lever. Eventually, the lever will bend easily. Don't get carried away with the heat or the bend. Reinstall to see if you got it right. When satisfied, repaint.
when you really need it, and you're mashing that mo-fo for all you're worth...will it hold up?

propane torch or heat gun?

David
__________________
MSF RiderCoach
'81 R80G/S 'Moby'
'82 CT110 "Postie'
Mendodave is offline   Reply With Quote
Old 04-28-2010, 12:25 PM   #5
Beemerguru
Beemerguru...G/S guy
 
Beemerguru's Avatar
 
Joined: Nov 2006
Location: Foster City, CA
Oddometer: 877
If you really want 2 finger braking and great control, just add a Harrison 6 piston. Problem solved.
__________________
Greg Hutchinson
BMW Club of Northern California, Ambassador, BMW MOA, Vice President Vintage BMW Club
http://gregsgssite.shutterfly.com/
Beemerguru is offline   Reply With Quote
Old 04-28-2010, 04:09 PM   #6
Mendodave OP
Road Scholar
 
Joined: May 2005
Location: North Coast California, M/C Heaven!
Oddometer: 864
6 piston caliper

Quote:
Originally Posted by Beemerguru
If you really want 2 finger braking and great control, just add a Harrison 6 piston. Problem solved.
Hi Greg!

somebody just mentioned a 6 piston caliper available from Cal BMW, is this the same beast? I have two sets of wheels and would like to make both work without dropping too much $$...so much for that idea. 2 320mm rotors would be about the same as the 6 piston caliper. ($600+)

David
__________________
MSF RiderCoach
'81 R80G/S 'Moby'
'82 CT110 "Postie'

Mendodave screwed with this post 04-28-2010 at 04:24 PM
Mendodave is offline   Reply With Quote
Old 04-28-2010, 04:37 PM   #7
SOLO LOBO
airhead or nothing
 
SOLO LOBO's Avatar
 
Joined: Mar 2004
Location: Shoreline, WA
Oddometer: 8,546
Quote:
Originally Posted by Mendodave
2 320mm rotors would be about the same as the 6 piston caliper. ($600+)
Although I suspect my cheepo eBay pads aren't giving all the stopping power a good set would, I can say that my 320mm rotor set up on my G/S isn't eye-popping in the performance gain...

I do have two finger breaking, but I also did with the old set-up... it is better, just not as good as the 6 piston Nissin I put onto my old R100GS.
__________________
"punkrocks what it's all about" - J. Strummer



Quote:
Originally Posted by Stagehand
your bike is suitably dirty. Well done.
SOLO LOBO is offline   Reply With Quote
Old 04-28-2010, 04:40 PM   #8
Beemerboff
Beastly Adventurer
 
Joined: May 2005
Oddometer: 2,210
There are levers out there with a longer nose, the bit that pushes the master cylinder, and they will solve your problem if youcan find one.

Dont know what model they came on but I would suspect that it was one with twin disks and large calipers.

Or you can build up the nose with weld and then file it down to suit.

Or, if you are a real bodger, you can file a flat on the nose, drill and tap a hole and fit a screw and lock nut as a adjustable nose. I did it as a temporary experiment 50,000 km on my75/7 and it is still working OK.

The Honda levers are forgings , and will indeed take a but of bending without failure, but if the BMW ones are castings then I dont think the advice to heat them is correct.
Aluminium gains the majority of its stength during a complex annealing, or heat soaking process and reheating them will weaken them permanently, and I for one dont think this is sensible on critical brake components.
__________________
Adelaide Hills, Australia. 93 R100 GS, 77 R75/7 ,70 BSA B44VS, , 86 R80 G/S PD, 95 BMW Funduro F650 ST
Beemerboff is offline   Reply With Quote
Old 04-28-2010, 10:26 PM   #9
Beemerguru
Beemerguru...G/S guy
 
Beemerguru's Avatar
 
Joined: Nov 2006
Location: Foster City, CA
Oddometer: 877
Adding another rotor/caliper setup also adds a ton of unsprung weight which you can feel moving a 21' wheel back and forth at speed.

A Harrison (same as CAL's) is around $400 or so for the G/S..bolt on - comes with pads. I get a discount since I've bought around 20 of the things for various airheads and K bikes.

And Beemerboff is right about the heating of BMW levers...don't do it
__________________
Greg Hutchinson
BMW Club of Northern California, Ambassador, BMW MOA, Vice President Vintage BMW Club
http://gregsgssite.shutterfly.com/
Beemerguru is offline   Reply With Quote
Old 04-29-2010, 05:26 AM   #10
Beemerboff
Beastly Adventurer
 
Joined: May 2005
Oddometer: 2,210
Swapping between the R75/7 with two big thick solid cast iron disks and the G/S with one thin, perforated wave disk I notice the difference on the first couple of corners, and they are real slow ones. After that I dont notice the difference.

One I get a bit pace on I dont move the bars much, it is all down to body English, but if anything the 75 turns in a bit quicker and easier.
__________________
Adelaide Hills, Australia. 93 R100 GS, 77 R75/7 ,70 BSA B44VS, , 86 R80 G/S PD, 95 BMW Funduro F650 ST
Beemerboff is offline   Reply With Quote
Old 04-29-2010, 08:30 AM   #11
SOLO LOBO
airhead or nothing
 
SOLO LOBO's Avatar
 
Joined: Mar 2004
Location: Shoreline, WA
Oddometer: 8,546
Quote:
Originally Posted by Beemerguru
A Harrison (same as CAL's) is around $400 or so for the G/S..bolt on - comes with pads. I get a discount since I've bought around 20 of the things for various airheads and K bikes.
Greg,

How would one buy one of these Harrion's for $400???
__________________
"punkrocks what it's all about" - J. Strummer



Quote:
Originally Posted by Stagehand
your bike is suitably dirty. Well done.
SOLO LOBO is offline   Reply With Quote
Old 04-29-2010, 09:37 AM   #12
Infracaninophile
Finding My Way..
 
Infracaninophile's Avatar
 
Joined: Sep 2001
Location: New England, USA
Oddometer: 7,515
Quote:
Originally Posted by SOLO LOBO
Greg,

How would one buy one of these Harrion's for $400???
Me too. I'd like to get one of the $400 ones for my R100GS as well.

Tom
Infracaninophile is offline   Reply With Quote
Old 04-29-2010, 12:34 PM   #13
Mendodave OP
Road Scholar
 
Joined: May 2005
Location: North Coast California, M/C Heaven!
Oddometer: 864
Me three!

Quote:
Originally Posted by Infracaninophile
Me too. I'd like to get one of the $400 ones for my R100GS as well.

Tom
Can we get into a group buy here, Greg?

Mendo
__________________
MSF RiderCoach
'81 R80G/S 'Moby'
'82 CT110 "Postie'
Mendodave is offline   Reply With Quote
Old 04-29-2010, 12:39 PM   #14
zenben
all roads are one
 
zenben's Avatar
 
Joined: Feb 2007
Location: Portland Oregon
Oddometer: 596
Quote:
Originally Posted by Beemerguru
Adding another rotor/caliper setup also adds a ton of unsprung weight which you can feel moving a 21' wheel back and forth at speed.
I don't recall the extra disc being any big deal. Are you speaking from experience, or speculation?
zenben is offline   Reply With Quote
Old 04-30-2010, 10:31 AM   #15
Mendodave OP
Road Scholar
 
Joined: May 2005
Location: North Coast California, M/C Heaven!
Oddometer: 864
Harrison Billet

Quote:
Originally Posted by Mendodave
Can we get into a group buy here, Greg?

Mendo
I am sure I could get several more interested parties locally as well as myself, if that helps....an R80 ST and two R100GS's.

The payment logistics might be a pain, but I would certainly send my money to Greg, he is very trustworthy.

Mendo
__________________
MSF RiderCoach
'81 R80G/S 'Moby'
'82 CT110 "Postie'
Mendodave is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 07:23 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014