Ok so I got a new website, what do you....

[SideshowBob]

Hmmm, I find this conversation to be rather interesting as I have the Fatty on my 2003 MC250, and I have the original Doma in my basement. Never even thought to throw the Doma on.... hmmmm.

[Skidad]

Originally Posted by webmaster

I tested four pipes back to back same day, same terrain.

1. doma
2. messico
3. motowest
4 fmf



My suggestion would be for Steve to build a pipe based on the doma - lean just slightly more to bottom-mid power (not much) and really heavy duty to survive in Glenn's neck of the woods... In my opinion, this would be "the ticket".

jeff

Isn't this what the "new" FMF Gnarly pipe is supposed to be. The one that comes stock on the new bikes (08, 09 and maybe some 07's) A heavy duty copy of the Doma or Messico pipe. I forget which one.

[PEB]

The new FMF is definately new. THe old one hit hard and then abrubtly signed off. THe new one has a nice spread.

[gasgasman]

Speaking of pipes.
I wonder why no one uses Hydro Forming to build pipes?
Hydro Forming is a process where you have a die in the shape of the pipe. You insert a hollow tube with one end capped off into the die. Then pump water into the hollow tube, which forms to the shape of the die. This would produce a weld free pipe.

[eff]

Originally Posted by gasgasman

Speaking of pipes.
I wonder why no one uses Hydro Forming to build pipes?
Hydro Forming is a process where you have a die in the shape of the pipe. You insert a hollow tube with one end capped off into the die. Then pump water into the hollow tube, which forms to the shape of the die. This would produce a weld free pipe.

Wouldn't that cause thin spots where the metal expanded the most?

[gasgasman]

You would factor that in when selecting the proper pipe.
All modern day vehicles with chassis frames use Hydro Forming to shape them. I think some of the Yamaha sport bike frames are built the same way.

http://http://en.wikipedia.org/wiki/Hydroforming

[GMP]

HD VRod frame is made that way. You can get bend angles that you cant get using other methods. I suspect the volume has to be quite high to pay for the tooling, street bikes and cars no problem but 2-stroke pipes?

[Skidad]

Many of the mountain bike frames are now made this way. Some really nice shapes.

I want a pipe made of high impact heat resistant plastic that returns to shape after a hit Now there's an idea.