Never heard of the machine! and I've been alive since 1959 the birth of skidoo. I have forgotten more manufacturers than you will ever know. And I don't know this one.W.T.?
My GF converted a generator with a 643 to burn natural gas more than enough power at 1800 rpm with oil injection to power here dads house, a 3/4 inch main was run to the 433 powered 2 stroke natural gas welder.
that thing is a rocket
My GF converted the electric welder to 433 natural gas!
Yamaha never sold a GPX 643, so this has to be from a 643 SR 1972-73 motor in a GPX body. But it's a nice built.
Correct you are! GPXs stopped at 433
Never heard of the machine! and I've been alive since 1959 the birth of skidoo. I have forgotten more manufacturers than you will ever know. And I don't know this one.W.T.?
Gpx-74,75 was produced with 338,433 engines, this sled has a Mod -73 Sr 643cc engine
I rode a 338 it was a monster...
🤣🤣🤣
My GF converted a generator with a 643 to burn natural gas more than enough power at 1800 rpm with oil injection to power here dads house, a 3/4 inch main was run to the 433 powered 2 stroke natural gas welder.
@jlo13800 very cool build/project, got any pictures?..from Wyoming USA 🇺🇸 👋🤠
Jävla bildstabilisering.... Men du får ändå tummen upp! :-)
I don't believe they ever made a 643 motor? I owned the 340gpx and a friend had the 433gpx. Never seen a 643.
They are rare but they do exist. I own one :)
@@pettersvard5990 NOT a GPX 643 you don't. Unicorns are more common than a 643 GPX
Put a hood on it=less snow to dig out. Hoods are made for a reason
338 &433 sorry no 643
Det finns inga Gpx 643 här får du se en Sr 433 1971 factory racing th-cam.com/video/dFePcspBKOM/w-d-xo.html
That's a very dumb thing to do without a belt guard!!!
prolly should have shut it down while cleaning the snow out of the cowl
Your dumb