kz750 custom swingarm fab

Just because you can do something, doesn't mean you should.

I can see a reason for an extended swing arm if you're drag racing a 150+ hp bike, but a 40 rwhp 750 twin?
I just don't get it, but maybe I'm just to old.

Not directed at you Leon, but at your buddy.

Looks amazing , but structurally that n shaped piece at the top of the rear shocks will be under a ton of force. A break will send shocks toward the gas tank and middle of frame to ground. It looks like you could have a piece added to triangulate the n piece to the frame. A wreck at 140mph would suck!

thanks for the replies fellas .

FaultedGeologist your preachin to the choir brother.

leon

531blackbanshee wrote: FaultedGeologist your preachin to the choir brother.

I prefer beating dead horses to preaching... too much schooling on evolution and geology to do anything else!

On a serious note, the machine work and welding is fantastic. I was at work, so I was unable to edit the image. I assume you are already on this tip structurally, but I wanted to make sure. Doing this to both sides will save a bike and a life.



Keep on keepin' on!

please believe me when i say "i got this".

leon

What's your ground clearance, under load, at the brace in the swingarm? Looks really low...

Looks really cool Leon! Your fabrication is fantastic as always. Here this is for you.... :evil:

Cory

The braced cr-mo swing arm looks fantastic! Thanks for the pics of your process...awesome work as always.

steell wrote: Just because you can do something, doesn't mean you should.

I can see a reason for an extended swing arm if you're drag racing a 150+ hp bike, but a 40 rwhp 750 twin?
I just don't get it, but maybe I'm just to old.

Not directed at you Leon, but at your buddy.

Coming from a car culture, that can be said for any tubbed, pro streetcar with 31.5 Mickys on the back and a bone stock SBC with a carter under the hood. If the look works and what their after, so be it! Lol

Cory

!Seymore wrote: What's your ground clearance, under load, at the brace in the swingarm? Looks really low...

I also think it may be close when under load, plus the top mount for the springs needs a brace. Hit the gas and the forces will flex it even more... Hit a bump and bottom out or break that brace.

531blackbanshee wrote: please believe me when i say "i got this".

leon

Apparently, Leon was only here for some back patting. No constructive critique allowed from the community. We gave input because it was requested. Moving on...

I believe what he is saying is more of a "already gonna do that" than anything else. And yes the underbrace looks a little low; interested to know what the measurement is, going with bigger rims or something.

alright well we have generated some forum activity.
!Seymore ,
while i don't have the actual ground clearance measurement.
it was measured off of my own swingarm which uses the same rear tire size and has shown to be fine in use.



FaultedGeologist,
i stated my reason for posting pictures here of some of my work in the first post.
to bring some more fabrication and generate some forum activity.
as,
i would also invite you to post pictures of your work and projects and especially anything that makes you believe you have any kind of a base to offer advice.
i did not post them here for your or anyone else's approval.
as for the upper shock mounting crossbar it is strong enough as it is to withstand normal road use.
but that's neither here nor there as bracing has always been a part of the plan,and it wont be used like this so neither your nor i will have the opportunity to be proven right/wrong.
i have fabbed a few underbraced arms before and have a good grasp of what it takes to pull them off.
here is one i did for doug,







here is one for tyler,







here is krazyriders,






here is craigs stealth overbrace,









as soon as i make some more progress on the twin i will post some more pics.

leon