1100 swinging arm in an Airhead

[Rob Farmer]

Anybody done this? Does it fit straight in? Does it need a Paralever airhead driveshaft and if so does that fit into the 1100 bevel box?

Just messing with an idea

 

[Vern]

Try Jim Elderfield I think he has/might have/thought about it/done it maybe

 

[Rob Farmer]

Cheers Vern. I'll send him a PM

 

[(RIP) Kaister]

its about time someone on this forum built a real GS special.

Rob - i guess you're the man to do it. .

 

[Kenny]

its about time someone on this forum built a real GS special.

Oi !! Members only in here sonny

 

[Timolgra]

Anybody done this? Does it fit straight in? Does it need a Paralever airhead driveshaft and if so does that fit into the 1100 bevel box?

Just messing with an idea

I have some of the parts and had considered doing this mod.
If I remember correctly the 1100 shaft needs to be grafted with a paralever one, then there's the problem of the rear shock if it's mounted 1100 style then the battery needs relocating etc etc. A decent alloy welder could fabricate a mounting on the 1100 housing though.

 

[Rob Farmer]

Thanks Tim,

The shaft mod seems quite straightforward if thats all that needs doing. I can run up another rear subframe with an 1100 style shock mount on it. Do you know if the 1100 swinging arm is a straight swap onto the paralevers mount?

 

[Timolgra]

Do you know if the 1100 swinging arm is a straight swap onto the paralevers mount?

I would be guessing as this was info passed onto me by my bikes previous owner who was also considering this mod.
I was under the impression that yes, it is a straight swop but I could be talking bollox. Again
Amongst the parts I had for the job is an 1100 shaft but an 1150 housing which is much better looking.

 

[JohnnyBoxer]

Try HPN site, they seem pretty competent with the mod

 

[Steptoe]

I have an 1100 swingarm sitting here - shall i measure the distance between the mounting points ??

 

[Colt]

hi Rob and all you G/S ERS
seen this German site :?http://www.q-tech.de/

 

[Rob Farmer]

I have an 1100 swingarm sitting here - shall i measure the distance between the mounting points ??

I'll be in touch when I get back from my holiday Neil

 

[B Murr]

Anybody done this? Does it fit straight in? Does it need a Paralever airhead driveshaft and if so does that fit into the 1100 bevel box?

Just messing with an idea

Why do you want to do it Rob? Is it to improve reliability/getting away from paralever design fault?

 

[JohnnyBoxer]

Why do you want to do it Rob? Is it to improve reliability/getting away from paralever design fault?

At a guess ............. centrally mounted shock for more suspension travel and a rear brake that works.........

ie the Paralever rear drum for an Oilhead's disc

 

[Nin]

That's it - do it for greater suspension travel and a rear disc brake, as well as a slightly more robust drive shaft.

You will need to fabricate a central mounting point for the rear shock on the frame, and do the driveshaft graft wot has already been mentioned.

Nin

 

[asgmkg]

I have bought an r1100 rearend with the hopes of a modification such as this if the distant future. So anyone who takes the bull by the horns (so to speak) will get an audience from me.

 

[(RIP) philgunn]

GS rearend

here is a set of pics i got when i thought about my project before i bought a HP2 , there is about ten in total , bike was built in holland, there are quite a few over there , normally at the GS meeting at Eastertime
regards

gunner

 

[(RIP) philgunn]

more of the same

next set of pics

 

[(RIP) philgunn]

last few

some more

 

[Steptoe]

Friend of mine has just fitted a 1100 final drive cover ( with the disc and caliper onto his paralever final drive - he had to machine out the inside to take the inner, and have the wheel respoked slightly off centre, so the spokes missed the brake caliper . Less faffing around