Topic: Help fitting 550f header on K frame

[streak09]

Well, as the titlenstates I am trying to fit a 550f header onto a 550k frame, and is proving to be a bit more difficult than anticipated.

Here is where I stand:

Shorty cone muffler attached (slip fit) to header.
Stock K foot pegs.
I have both a K and F kicker. Only F kicker clears header. But, interferes with stock pegs. I do not want to go with rearsets at this time.
K brake pedal, but interferes with header. I also have a XS650 brake pedal that steps way out, but still doesnt clear header.

I am set up with a kick only system, and would like to stay that way.

I am thinking that a F kicker along with a F foot peg may square me up. Before getting some parts I would like to verify with some of the resident F owners here and see if anyone could snap some pictures of the brake/foot peg/kicker area to see how it differs from the K setup to determine if swapping parts will get me out of this pickle.

Any help/info would be greatly appreciated!

[Stev-o]

Does your K footpeg fold up? If not, you'll need an F footpeg. And most likely the F brake pedal.

[flatlander]

Before getting some parts I would like to verify with some of the resident F owners here and see if anyone could snap some pictures of the brake/foot peg/kicker area to see how it differs from the K setup to determine if swapping parts will get me out of this pickle.

these are all i have at the moment. can snap some more if needed but my exhaust is off now.

[streak09]

Does your K footpeg fold up? If not, you'll need an F footpeg. And most likely the F brake pedal.

It does, but it folds up into the F kicker. It looks like the F brake and peg mounting points have larger differences than I had realized.

From Flatlander's pictures, the F models foot peg attaches just under the swing arm pivot, where my K attaches directly under the kicker, via the rear lower engine mount.




Also, it looks like the brake pivot "tube" extends away from the frame more on the F and the K, which would help the brake clear the header, but I can't determine for sure from the pictures. Flatlander, maybe if you get a chance, could you measure that tube that extends out from the frame?
The solution of just swapping out parts is not looking good... I may have to spring for rearsets  . Then I have the dilemma on where to mount, as I think the passenger peg locations may be too far rearward...

Thanks Flatlander and Stev-o for the help!

[rocs]

Hey,

I ran into the same problem on my brothers build. We ended up cutting the K brake pedal and welding in an extension. Here are some pictures.

All K parts with F header and shorty muffler.

[LesterPiglet]

If you change the brake pedal you will need the return spring also.

[Duanob]

Don't forget the F muffler mount. It also doubles to keep the center stand out of the chain.

[flatlander]

the tube that the brake lever is attached to, is 7.6cm from where it's welded to the frame.

[streak09]

Excelent info guys!

I ran into the same problem on my brothers build. We ended up cutting the K brake pedal and welding in an extension. Here are some pictures

Good ideal rocs. Did you not have any interference with the kicker and the brake pedal even with the bend? It looks like it may still interfere.

Thanks for the additional pics and measurements flatlander. I will have to take some measurements when I get home. Definitely looks to stick out further. Maybe I can weld and extension on and replace my current pivot and pedal with the F style.

Don't forget the F muffler mount. It also doubles to keep the center stand out of the chain.

Good point. I am planning on fabbing a support to mount the rear of the header near the brake pivot.


Thanks a bunch!

[streak09]

Did a quick search on ebay for F brake pivots, and found a few '78k pivots that look extended. MaY be an optional as well. Wish I had a few spare bikes to take measurements from