GSXR400/1135 hybrid race bike '80s

[sidecar bob]

So why is the front left cradle plated?

What's cradle plating? I'm just a simple bike restorer.

[jellywrestler]

What's cradle plating? I'm just a simple bike restorer.

or has someone plated the front left cradle?

[sidecar bob]

or has someone plated the front left cradle?

It's cut, reinforced & plated to make room for the engine & pipes, plus reinforcement.
That's mainly why I imported it.
The air cooled motor didn't just drop in.
The two tubes, round & square at the top are non factory too.

[husaberg]

It's cut & plated to make room for the engine & pipes, plus reinforcement.
That's mainly why I imported it.
The air cooled motor didn't just drop in.

for others Here is the std Frame Bob already has one for reference.

I see they have covered over the std kink by the look of it.
the reason i asked is i thought the weakness would be more to the rear of the cradle.

[sidecar bob]

for others Here is the std Frame Bob already has one for reference.

I see they have covered over the std kink by the look of it.
the reason i asked is i thought the weakness would be more to the rear of the cradle.

It may well be, but it's not for me to argue with or change. This isint the ese thread where everyone knows better than the maker

[Drew]

It may well be, but it's not for me to argue with or change. This isint the ese thread where everyone knows better than the maker

That thread is internationally referenced for two stroke tuning, so ya prolly barking up the wrong tree there.

[husaberg]

It may well be, but it's not for me to argue with or change. This isint the ese thread where everyone knows better than the maker

I have no idea it was just an observation, Dont fret, i will return to counting the fasteners and making sure you use the correct rivets later.
I was trying to figure out why it was done.
I see clearer from this pic what has been done

[sidecar bob]

That thread is internationally referenced for two stroke tuning, so ya prolly barking up the wrong tree there.

I appreciate that, and I'm not disagreeing with you, just saying wrong thread.
I'm tidying up an old bike, that's all.

[Drew]

I'm tidying up an old bike, that's all.

I still wanna ride one of them.

[Grumph]

It may well be, but it's not for me to argue with or change. This isint the ese thread where everyone knows better than the maker

Of course everyone knows better than the maker - he was an Australian. Positively disloyal to think he got it all right.

Looks to me like the downtubes were curved as std to clear the 400 exhausts. The 750 pipes would be wider spaced so, as straight is stronger, they were built up to be straight - ish.

[F5 Dave]

When we did my 500 into RG250 frame which is kinda similar we plated over the inside webs around swingarm area too. It was Damon's idea, not sure if its added much rigidity but I defered to his much greater experience doing that sort of shit. Along with a few more points, like from the bottom cross diagonal closing the corner in to side frame rail.

[roogazza]

this will give some of you two stroke fans a chubby ? Made contact with an old friend last night in Waikanae. He's just completed this and is working on a second one.
Gunna zip down and catch up with him soon .He's a great bike builder and I thought he had given it all away. Good to hear he's still at it.

[malcy25]

this will give some of you two stroke fans a chubby ? Made contact with an old friend last night in Waikanae. He's just completed this and is working on a second one.

Nice job, still don't miss mine one bit!

[sidecar bob]

Nice job, still don't miss mine one bit!

Ok, why is that? Bit flat compared to a 750 two stroke GP bike?

[Grumph]

Ok, why is that? Bit flat compared to a 750 two stroke GP bike?

I don't know his reasons - but from observation, when they were proddy raced here, they hurt more good riders than anything else i've seen.