Custom exhaust maybe...

[supervision]

[jasonm.]

I see someone has an old Honda Hawk...

[Rick G]

Thanks Extent, I'll get started on it , this is amajor undertaking , I'm on a dial up!! :D

[VisionMeister]

Looks like someone is working on a 305 MotoGP bike.
Looks like skunkworks welding... beautiful.
Should have made it for a vision motor.

[Rick G]

Vision racer pics are on there way! maybe we will see the tomorrow.

[Extent]

[kwells]

That is definitely an interesting dual pipe design.  Wish we had some sound on that.

[mdskinner731]

that is freakin awsome.. lookin good.. lets get a sound clip of it ???

[Night Vision]

that front "yipe" looks better than I thought it would.. nice work Rick, I see you went for equal pipe lenghts.... how'd she go? any re-jetting required?...

[Rick G]

I owned the Vision racer for awhile , But I didn't build it.  A friend , Jim Vargo of Vancouver WA. owned it before me , but he didn't build it either. He wanted to get it going , but it had a badly rusted bore on the rear cylinder and he wanted to rebore it. However ,when he realized that no pistons or rings were available , he lost interest. He traded it to me along with a second Vision and  a XS 850 which I sold. The motor from the second vision now lives in my bike (with a different top end) . As we were moving to AZ. I had to scrap the racer. The dual disc front end is on my bike,as is the gas tank, the lowered seat, went to a short legged fellow, on the forum,who sold it not long after. The frame and swing arm sit in my back yard in case I ever need a rear end or swing arm bearings.
I never heard it run , but the carbs were 1 size up on the mains, every thing else was stock.
It would not be impossable to get a sound bite, we only need to ask Stobil , alias, Blake Stoddard,  you can see the left pipe peaking out, from under the bike, in his avatar.
He said the thing was unbelieveably loud , would set of car alarms at 100 yards. He loves it. If we ask him, I'll bet he will record it for us.
John Clemmons , may know more of this bike, it was raced  in the Portland area. John you out there?

[mdskinner731]

actually  come  to  think  of  it  my  old  neighbor  used  to  race  older  yamahas...  i  think  i  remember  him  saying  he  used  to  race  a  vision..  i  kno  he  had  his  old  racer  out  behind  his  house  but  it  was  all  wercked  and  barely  fixable  (not  sure  what  it  was  i  was  to  young  to  remember)  but  ill  look  in  to  it  and  see  if  he  still  has  it!!

[supervision]

  I'd like some of this, in Kit forum
  [img][http://www.eurospares.com/wilvisn1.jpg/img]

[supervision]

[supervision]

[QBS]

Wow! Tricked to the max.  Bet valve adjusting was zero fun.

[Tiger]

 :) I've now got a buddy of mine to make a "Y" pipe, to link the two exhaust pipe's into the R6 muffler. Once I get it back I can see how it all fit's and looks... ::), get her fired up and see how she runs...when the snow goes away!!!

          8).......TIGER....... 8)

[inanecathode]

DOOOOOOOOD!
Get him to make a few of them. The Y pipe is the hardest part of making an exhaust.

[kiwibum]

clamp the #15 collars to the flanges on # 3&4 with needle nose vice grips or small finger clamps, and tack them to the Y pipe.  Remove the Y pipe and weld out the # 15s.

Thanks for this advice Ron, I did this upgrade on a 400 I'm selling. Be aware it also requires a small amount of metal removed on the frame to be able to re-insert the Y into place. Doing it this way also enabled me to use standard exhaust copper crush o-rings rather than special order Yamaha solid copper rings. Seems to be working just fine after a 20km test ride.

[kiwibum]

Here is some photos of a modified exhaust on one of my 400's, it's a very nice little adapter pipe welded  out of cut U bends (I'm assuming this is how it was made, I didn't make it but it's welded out of short curved bits) with a single baffle exiting out the RHS. Sounds much nicer than the standard twin pipes as well.

[Tiger]

 :) Kiwibum...Can you post a "standback" picture, so I can see how it looks mounted altogether please. It looks like a solid job mate.
I'll be using the MAC front pipe, a similar rear pipe that is coming off of the rear MAC muffler and adding a short "Y" section to bring it all together into a single R's muffler... 8)

              8).......TIGER....... 8)