air head hydraulic clutch?
Re: air head hydraulic clutch?
Just a thought, the slave cylinder would not have to be connected directly to the arm to make this work, if you retained the last half of the cable and mounted the cylinder elsewhere on the bike. Say, on the one of the front downtubes, for example. Another idea, if you had a handlebar mounted front brake master cylinder, you could use the under tank MC location for your slave cylinder...
Re: air head hydraulic clutch?
Many thanks for those thoughts, Ken, Tim and Blitz.
Fabrications like this are way, way beyond my meagre capabilities though! I've drawn Craig's attention to this thread so he may "call in and take a look".
In an emergency I can operate the clutch normally - it's just painful. And my problem is the thumb joints on both my hands, so a right-hand clutch won't help! By the way, this problem was the result of a m/cycle accident in 1974 when I wrote off my beautiful CB750K2, still gripping the handlebars as I hit the curb (Eng - kerb)! Ah the memories...
Yes, I'm all for a creative solution. Bring 'em on!
Fabrications like this are way, way beyond my meagre capabilities though! I've drawn Craig's attention to this thread so he may "call in and take a look".
In an emergency I can operate the clutch normally - it's just painful. And my problem is the thumb joints on both my hands, so a right-hand clutch won't help! By the way, this problem was the result of a m/cycle accident in 1974 when I wrote off my beautiful CB750K2, still gripping the handlebars as I hit the curb (Eng - kerb)! Ah the memories...
Yes, I'm all for a creative solution. Bring 'em on!
Re: air head hydraulic clutch?
Post 81 tranny and clutch...one of the best mods I've made to my /6. Easy to pull, and performs better during hard riding.
The enjoyment factor went way up with that.
Hydro clutches have been done on airheads. I thought about doing it before the tranny fell into my hands.
I was going to use a spare slave off my 1975 BMW 2002 and a bar mounted master. A serious bracket would need to be fabricated that would bolt onto lengthened tranny cover bolts. The slave would mount parallel to the tranny cover and act upon an L shaped lever with the proper fulcrum for travel.
The enjoyment factor went way up with that.
Hydro clutches have been done on airheads. I thought about doing it before the tranny fell into my hands.
I was going to use a spare slave off my 1975 BMW 2002 and a bar mounted master. A serious bracket would need to be fabricated that would bolt onto lengthened tranny cover bolts. The slave would mount parallel to the tranny cover and act upon an L shaped lever with the proper fulcrum for travel.
Bellingham, WA USA
1975 BMW R90/6
1975 BMW 2002
1971 VW Westfalia
1985 VW Vanagon
http://advrider.com/index.php?threads/b ... s.1074183/
1975 BMW R90/6
1975 BMW 2002
1971 VW Westfalia
1985 VW Vanagon
http://advrider.com/index.php?threads/b ... s.1074183/
Re: air head hydraulic clutch?
I've seen photos of hydraulic clutches on airheads and I knew some one here would have ideas. I really want to scavenge bmw parts to keep the whole thing German but I'm not against turning to the Japanese for parts, (I run mikuni's on my bike already). There is a way I'm sure, but can it be done with my simple brain and without breaking my budget?
- Zombie Master
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Re: air head hydraulic clutch?
I may have missed something here, but my '84 R100 clutch is as easy as it gets. There must be a way to fit newer used parts?
Any and all disclaimers may apply
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Re: air head hydraulic clutch?
Interesting thread, As my daddy used to always say [were there is a will, there is a way]
Re: air head hydraulic clutch?
I'm a bit puzzled about the need for an easier clutch on a '82 bike. It has the later style clutch which is a lot easier to pull than a /5, /6, or /7 series bike. Though I don't have a problem with the earlier clutches I can imagine that a lot of people would.Ken in Oklahoma wrote:chasbmw wrote:Unless they have changed it, the benchmarks setup would not fit my 82, to fit it you need to cut off the end of the clutch cable, the end of which is secured to the chain by grub screws. If you have an aftermarket clutch cable with a greater diameter than the BMW one, it won't fit.
Ken[/quot
I put a easy clutch on LaDonns's early /6 a few years ago, I makes her happy ever time she rides it.
Re: "where there is a will, there is a way"
Yep, just make sure you are in the will...! 

Re: air head hydraulic clutch?
http://www.off-the-road.de/XT-660/Magur ... T-660.html
Stumbled on another another link to the Magura kit, with a better description of it.
It seems that is designed to replace the cable only, and there is no mechanical advantage in the hydraulic system, the sole benefit coming from the claimed 20% reduction in friction .
However, if it could be coupled with a extended OEM operating lever a bit or leverage could also be gained that way.
Stumbled on another another link to the Magura kit, with a better description of it.
It seems that is designed to replace the cable only, and there is no mechanical advantage in the hydraulic system, the sole benefit coming from the claimed 20% reduction in friction .
However, if it could be coupled with a extended OEM operating lever a bit or leverage could also be gained that way.
Adelaide, Oz. 77 R75/7. 86 R80 G/S PD, 93 R100 GS, 70 BSA B44 VS ,BMW F650 Classic
Re: air head hydraulic clutch?
20% reduction is a big help.
One must remember that an EZ clutch ADDS friction, so it does not reduce the effort by one half, perhaps only a third.
One must remember that an EZ clutch ADDS friction, so it does not reduce the effort by one half, perhaps only a third.
Garnet

