FZR400 Frame / R6 subframe?

[Fzrmike33]

I didnt know it took a engineer to make a shock mount , looks like a straight foward project to me, all the motorcyle experts and welders and nasa guys i have talked to said pretty simple.

[Freestyle72]

It's not necessarily that it takes an engineer to design and test it, it's just that it would be wise to do so. It's not as simple as just making the same part out of aluminum as you would steel. Your idea for heat treating an stuff is really good. All I am saying is just becareful. You can do it with no engineering and it may work or even will probably work without incident. But it's just one of those things IMHO that isn't worth dying over, that's all. Not saying it won't work and be just as good as the steel one. Do whatever you are comfortable with. No doubt it will be a very trick part.

[Fzrmike33]

Oh yes i know great care must be taken, cause it could kill you if it fails, and i think it must be heatreated for sure.

Im just so frustrated with this whole project with the R6 subframe and all, you never put any pics up for me to see. I just dont see how you can slide the yzf tank back that far, you must have had to do some grinding on the tank, if you get time i would love to see some close up of you tank mount in the front, and rear, thank.


Mike

[Freestyle72]

I've had a busy past couple days and my bike is in pieces at the moment because I was test fitting some stuff. I promise I will get you those pictures as soon as I can. The tank is trimmed slightly at the back. And it sits about 10mm or less above the frame. I didn't want the frame contacting the tank so neither would scratch the other and basically every bike I have ever see does this for whatever reason

[yamaha_george]

I didnt know it took a engineer to make a shock mount , looks like a straight foward project to me, all the motorcyle experts and welders and nasa guys i have talked to said pretty simple.

Any idiot can make just about anything there is, no end to human stupidity, over the last 50 years i have seen some real classics of stupidity in Bikes , Cars and Aerospace bits all of the less educated stuff met with a very sticky end.

Ignore the engineeer in the field at your peril was /is my warning .

[Fzrmike33]

I agree George, im not going to be ignorite on something like this, i will do my homework, thanks for your input.

[yamaha_george]

I agree George, im not going to be ignore it on something like this, i will do my homework, thanks for your input.

FZRM,
You are welcome, I like to you guys to think & do things differently, but safely :-}

[haro504]

my seat is about an inch back as well im planning on maybe putting a bag in the gap and filling it with expansion foam then when hardened ill trim it to the shape i want and skin it with some extra seat material so it just looks like another peice. kinda like the small plastic peices that go on the r6 tank. i might also look for the expansion foam packing material basically the same thing.

Im just so frustrated with this whole project with the R6 subframe and all, you never put any pics up for me to see. I just dont see how you can slide the yzf tank back that far, you must have had to do some grinding on the tank, if you get time i would love to see some close up of you tank mount in the front, and rear, thank.

aword of advise is to never rely on other people to lead the way, anyone can do anything if they want to. this is how i live life

[Fzrmike33]

Your tank has to go back more, if your using a yzf 600 tank. I put the stock tank on my bike with the R6 subframe on, and its goes about 1" 1/2 further back than the yzf tank, so in short the yzf tank is shorter to begin with, if you dont slide the tank back, you will end up with the gap, but im sure it can be filled.

Im getting a hotbodies race tail that comes all the way to the tank, now im not sure it will reach the yzf tank, but i can add fiberglass to it and shape it to the tank, and shape the foam pad also, in thereoy it should work

[Freestyle72]

Rear mount


Front mount


Yes the tank is trimmed a little, but when I bought it was already trimmed so that worked out alright. I also had to bend some of the lips at the back in so it would be out of the way



Seat on in it's stock location. Notice no gap


Another view


Gap between tank and frame


How it looks in the grand scheme of things.

[Fzrmike33]

Thanks for the pics i really appriciate them, now i kinda see how things go, and your tank looks fine in the front. You trimmed the R6 where it meets the tank ?, or where did u trim R6 seat ?. I may wait, cause i know your doing a R6 tank, i want to see how that works for you, and if you think its a better way to go, but your YZF tank looks fine.


Im acually thinking now of moving the 400 frame tabs foward about a 1", cut the welds and move them forward, that will close up the tank, seat gap,by moving the subframe forward 1" and i wont have to move my yzf tank back so much, sort of split the differance. Although i hate to cut the welds , i just had it welded up real nice, im going to play with it and see.

[Fzrmike33]

Made a little progress on my all Aluminum shock mount, but still needs more work. The pipe doesnt just butt into the plates, there are 3/16" deep holes same diam as the pipe, so they sit in the holes, then welded.

[yamaha_george]

Made a little progress on my all Aluminum shock mount, but still needs more work. The pipe doesnt just butt into the plates, there are 3/16" deep holes same diam as the pipe, so they sit in the holes, then welded.

Nice weld Job , you made the pipe a push fit into the plate recesses I trust rather than just rely on the weld taking the strain?

[Fzrmike33]

Yes George then its not a complete butt joint, cause butt joints arent very strong, and it would then depend solely on the welds, so this helps take some of the strain off the welds.

[yamaha_george]

Yes George then its not a complete butt joint, cause butt joints arent very strong, and it would then depend solely on the welds, so this helps take some of the strain off the welds.

Cool, Just checking we want our people safe :-}