DRZ Forks and HPN Tank on a R100 GS PD

[Podmiester]

Hi Daithi,
What are you doing with the original front end, lamps, clocks & mudguards ect ?
I'm thinking of GSing my Roadster.

Rgs Podmiester

[One Less Harley]

He's boxing up the original body parts so one can assume he's keeping the other bits too.

[Daithi]

Originally Posted by Podmiester

Hi Daithi,
What are you doing with the original front end, lamps, clocks & mudguards ect ?
I'm thinking of GSing my Roadster.

Rgs Podmiester

Originally Posted by One Less Harley

He's boxing up the original body parts so one can assume he's keeping the other bits too.

Yeah, One Less Harley is on the right track, I won't be selling off the bits. If you have the "roadster" why not get an enduro front end and do the same as I did ? It's surprisingly easy.....

[Daithi]

These things are like hens teeth, got one anyway:



I also have the inside cover from a R1100R along with the rear brake system, unfortunately the only wheel I have that will fit it is from the same R1100R, but it'll have to do till I get a spoked wheel.

I've ordered the Phosphor Bronze pivot bushing from Rubber Chicken and whe that arrives I'll bolt it all up and see how my alignment works out.....


Next photo should be of the bike complete with disk brakes on the back.

[Beater]

Whoa ... That from an R1100? What year? Is it a bolt up? This one won't have the destructive shaft issue ... right? VERY COOL.

[One Less Harley]

Originally Posted by Beater

Whoa ... This one won't have the destructive shaft issue ... right? VERY COOL.

hah hah hah...you wish

[Beater]

Originally Posted by One Less Harley

hah hah hah...you wish

A Wonderfully Glorious and Huge Dream!!!

squashed

[Daithi]

Originally Posted by Beater

A Wonderfully Glorious and Huge Dream!!!

squashed

Are you gents saying this won't work ?

I've put the drive on without bolting up and it looks ok, I can't see how the idea won't work, even
the wheel alignment seems reasonably good ?

[Beater]

Originally Posted by Daithi

Are you gents saying this won't work ?

I've put the drive on without bolting up and it looks ok, I can't see how the idea won't work, even
the wheel alignment seems reasonably good ?

I have no idea weather it will work or not ... personally, I'm rooting for you. If it does, then my '91 GS will be getting one of those when the shaft dies.

Are you replacing the swingarm as well? Are you just replacing the final drive assembly?

[Daithi]

You had me scared there, I thought you knew something
I didn't. The drive is from a K1 and pairs perfectly with the
original shaft. I'll put the inside cover from an 1100R final
drive to allow me to use whe twin pot caliper. I'm relieved
there's nothing you're aware of that would stop this from
working. This should be a bolt up job with no machining
apart from making up a shim for alignment purposes.

[Beater]

Originally Posted by Daithi

You had me scared there, I thought you knew something
I didn't. The drive is from a K1 and pairs perfectly with the
original shaft. I'll put the inside cover from an 1100R final
drive to allow me to use whe twin pot caliper. I'm relieved
there's nothing you're aware of that would stop this from
working. This should be a bolt up job with no machining
apart from making up a shim for alignment purposes.

Very interesting. Besides maybe the parts being available ... what are your reasons for doing this? Is there some sort of design benefit? The R1100's are not supposed to have the shaft problems of the R100's. Is this the reason? if this is the case, why not replace the swingarm as well? Does the shaft mate differently with the transmission?

More pictures!!!

Carry on!

[Airhead Wrangler]

Originally Posted by Beater

The R1100's are not supposed to have the shaft problems of the R100's. Is this the reason? if this is the case, why not replace the swingarm as well? Does the shaft mate differently with the transmission?

The R1100 swingarm and driveshaft are longer. Also, the trans side of the shaft fits on a spline rather than a bolted output flange like on airheads. In order to use an 1100 swingarm on an airhead, you need one of the trans output adapters. Also, you need to create a new shockmount as the oilhead swingarms use a single center mounted shock.

[hardwaregrrl]

Originally Posted by Daithi

You had me scared there, I thought you knew something
I didn't. The drive is from a K1 and pairs perfectly with the
original shaft. I'll put the inside cover from an 1100R final
drive to allow me to use whe twin pot caliper. I'm relieved
there's nothing you're aware of that would stop this from
working. This should be a bolt up job with no machining
apart from making up a shim for alignment purposes.

Just the age old Mono vs Para debate....keep moving, nothing to see!! But certainly looking forward to your progress!! Thanks for sharing!

[One Less Harley]

No I wasn't saying it couldn't be done. I think it has been done, what I was talking about was the drive shaft issues. That won't be taken care off.

[Box'a'bits]

I don't think this is being done for shaft longevity reasons. Daithi is following Phreaky Phil's lead in putting a rear disc on R100GS(ex-PD). He is using the KI final drive because that is the same generation as the R100GS paralever, & more particularly has the mounts to allow this.