GSXR400/1135 hybrid race bike '80s

[sidecar bob]

Has a few minutes up my sleeve today, so pulled Some bits off the bike.
I ended up lying the bike down & pulling the much lighter frame off the engine.
It was still a struggle & a credit to the guy that made it fit in the first place.

[husaberg]

Has a few minutes up my sleeve today, so pulled Some bits off the bike.
I ended up lying the bike down & pulling the much lighter frame off the engine.
It was still a struggle & a credit to the guy that made it fit in the first place.

looks like the outboard mag and drive was done to make the engine fit rather than just for width?
that sump sits nice and deep too.
Oh i see pic two isnt the mounted position is it due to the undershoot countershaft.

[sidecar bob]

looks like the outboard mag and drive was done to make the engine fit rather than just for width?
that sump sits nice and deep too.
Oh i see pic two isnt the mounted position is it due to the undershoot countershaft.

Yes, Id stopped for a break & to re asses the situation at that point.
Im going to reinstall the frame over the engine without forks & swingarm fitted.
Will put some pics up of various hand made parts that I've removed over the next day or two.

[Grumph]

Fasteners out of the cam cover - pulling that off would give a bit more room to move, LOL.

I see the detatchable side rail has a crossmember in front of the motor. Don't remember if the 400 has that as stock.
It's right where I added one on the kawa 500 which also has the bolt in side rail.

Standard way to build one like this is to sit the bare mainframe on a box, add the motor, then build up each end.
Once it's got wheels in, it can come off the box.

[sidecar bob]

Fasteners out of the cam cover - pulling that off would give a bit more room to move, LOL.

I see the detatchable side rail has a crossmember in front of the motor. Don't remember if the 400 has that as stock.
It's right where I added one on the kawa 500 which also has the bolt in side rail.

Standard way to build one like this is to sit the bare mainframe on a box, add the motor, then build up each end.
Once it's got wheels in, it can come off the box.

I got it with no cam cover bolts, so that wasn't me, I doubt it comes off with the engine in situ either.
The detachable member is factory 400 as it is on all the other 400's I've got.

[husaberg]

There was a cheap GSX750 on TM the other day pretty sure it was in Towellwonga, di you pick that up..........

[roogazza]

I got it with no cam cover bolts, so that wasn't me, I doubt it comes off with the engine in situ either.
The detachable member is factory 400 as it is on all the other 400's I've got.

hey bob seen this ? https://www.facebook.com/photo.php?f...NUfAMv5i&ifg=1

[sidecar bob]

hey bob seen this ? https://www.facebook.com/photo.php?f...NUfAMv5i&ifg=1

Thanks for that.
I'd suggest that the hand made fork brace off that bike is now on my bike too.

[sidecar bob]

There was a cheap GSX750 on TM the other day pretty sure it was in Towellwonga, di you pick that up..........

I saw one in Wellington fairly cheap, didn't see one in Tauranga though.
It would suit me better to get just a spare engine at this stage, because I really don't need any more dead bikes lying around.

[Grumph]

I saw one in Wellington fairly cheap, didn't see one in Tauranga though.
It would suit me better to get just a spare engine at this stage, because I really don't need any more dead bikes lying around.

There's been a few 750 pop-up katanas converted to 1100's - should be one or two engines sitting under benches.

I know of one locally, I'll ask.

[sidecar bob]

There's been a few 750 pop-up katanas converted to 1100's - should be one or two engines sitting under benches.

I know of one locally, I'll ask.

If we found an engine in Christchurch it would save me sending two engines south

[husaberg]

I saw one in Wellington fairly cheap, didn't see one in Tauranga though.
It would suit me better to get just a spare engine at this stage, because I really don't need any more dead bikes lying around.

It was Welly sorry it went for 300
I never knew thay made the AC 750 that late?
https://www.trademe.co.nz/motors/mot...2227005784.htm

[rustys]

Really loving the read on this thread, its like a story coming together.
I've been following this since day, one, and its amazing when someone starts a project and puts it out there, specially if the bike has a bit of history behind it, to watch and listen to all the help, feedback and knowledge coming in from fellow enthusiast's, news paper clippings, magazine articles etc, sounds now like you have the complete history of the bike, for the project, credit to you Steve, and everyone thats helping.

I had Paul Martindale around for dinner last night and we just happened to touch on putting larger motors into 400 frames to which we have both done ourselves, and raced them, the discussion happend to lead to this very same bike that Raced in the Swan Series when Robbie P rode it, mentioned to him that a thread was running on Kiwi Biker about the very same bike.

I'am glad to see after a lot of effort that you have now sorced this very same bike, (no replica now) and having the dream and passion to get it up and running again, which i know you will. Can't wait for further progress reports, to eventually see and hear it, this will be fantastic, so keep up the good work.

[sidecar bob]

Here's a few pics of today's progress.
A few close ups of pre cnc components.
Pic one, swingarm from gsx1135 modified to fit with added bracing.
Pic two, frame cutout to allow larger engine.
Pic three, down tube bracing.
Pic four, modified rear linkage & Spax shock, dimensions copied from RG500
Pic five, prepped frame ready for reassembly.

[husaberg]

Here's a few pics of today's progress.
A few close ups of pre cnc components.
Pic one, swingarm from gsx1135 modified to fit with added bracing.
Pic two, frame cutout to allow larger engine.
Pic three, down tube bracing.
Pic four, modified rear linkage & Spax shock, dimensions copied from RG500
Pic five, prepped frame ready for reassembly.

So why is the front left cradle, plated?