Project: Cool Kat II

[salty_monk]

I have no issues with the bolts... I believe the caliper mounts were not built to take that additional stress though.

[still_bluenoser]

But upside-down forks have no advantages what-so-ever, except for their strength and their tendency not to flex.

They look cooler

[Pedda]

That bracing is pointless. The whole area is fixed by the wheel bearings, axle and spacers. There's no additional benefit to be expected by that bracing. Only point a stabilizer would make (at least any) sense would be at the most southern point of the outer stanchions.

[MadDogGS]

And a large reduction in unsprung weight?

It depends on the fork. You are now hanging a smaller piece of steel where a larger piece of aluminum used to be.

I have no issues with the bolts... I believe the caliper mounts were not built to take that additional stress though.

I don't think the caliper mounts will see any stress from that brace, because there won't be any flex in the first place.

They look cooler

Very true.

[Tim Tom]

I don't think the caliper mounts will see any stress from that brace, because there won't be any flex in the first place.

If there is no flex then his brace isn't doing anything. If it is not doing anything then its simply added weight to the wheel. So why not remove it?

[MadDogGS]

If there is no flex then his brace isn't doing anything. If it is not doing anything then its simply added weight to the wheel. So why not remove it?

I completely agree with removing it. Mostly because it is ugly. The extra weight and unneeded parts don't help.

[russr33]

A little more progress. Passenger pegs were just tacked on to see how I liked them; doubt they will last. Exhaust can was just for mock-up purposes as well looking at different angles.

[jwhelan65]

Nice, can't wait to see how this turns out..

[still_bluenoser]

Also watching. Someday I'll be at your stage in my Kat project

[Mindless]

Someone knows their way around a TIG welder. Very nice.

If we're still discussing the fork brace: I think it's quite pointless too. As the others have pointed out, the whole point of USD forks is their strength. Fork braces were used on older RWU forks simply because they were long, thin and flimsy, and even then they could take a hell of a beating before flexing. The stock Katana forks (for example) are not even remotely comparable to modern USD forks in strength.

As for passenger pegs. I got a pretty neat set from a TL1000S. You could try looking up a set of those on eBay.

[gs58]

I've always thought that the purpose of a fork brace was to stop the forks twisting (rotating) when the brakes were applied. I don't think that the forces traveling up the fork legs are sufficiently different to distort the axle etc, and that is why it is sometimes recommended that you can put different weight oils in each leg when fine tuning suspension.

Good work so far, am enjoying the thread.

[mike-s]

Threads like this have prompted me to order some new consumables & bits & peices to go along with the aldi stick welder i bought years ago, but that has been sitting in its box unopened for a couple of years.

Once all the suspension stuff is done and my welding doodads arrive, i'll start having at it to extend the sidestand.

[jwhelan65]

I've always thought that the purpose of a fork brace was to stop the forks twisting (rotating) when the brakes were applied. I don't think that the forces traveling up the fork legs are sufficiently different to distort the axle etc, and that is why it is sometimes recommended that you can put different weight oils in each leg when fine tuning suspension.

Good work so far, am enjoying the thread.

Not sure what you mean, any type of bridge between the forks even if it slides up the forks, maintains integrity from any twisting. It does not matter where it is located as long as the forks remain true. I would think this type of brace is actually better than a standard version, it keeps the front wheel in line with forks all the time. IMO

[gs58]

I can appreciate the intention and the workmanship, but I've never seen a brace on USD forks before. If they were necessary I'm sure that they would be used on race bikes and would be produced as an aftermarket accessory.

I look forward to your feedback after a ride or two.

[russr33]

Jay (who machined the brace) got the idea from a racebike he had seen back in the day. Trying to find a pic. He now has one mounted on his '93 GSXR 7/11 and swears by it. Admittedly he made it and may be biased. There are a couple of us who have recieved one and we will give our reviews of it when our projects are up and running.