Wacky inventions

[mx250]

I would have to check but I think it is YZ250D (and lots of other Yammies using the same hub).

[frostype400]

probably will you sell me the yz 250d minus the sprocket thanks Michael.

[LWC82PE]

i reckon a PE400 would rip a plastic sprocket to shreds in about 20mins

[BJJ]

Ah,  nylon sprockets.  Lighter,  but wear quicker of course.  Worked at Addington Engineering in ChCh many years ago and we used to cut sprockets.  But I think it was only from steel.  I remember at the time thinking they (nylon) were ugly.

[JC]

i think its cool how companies , particularly Engineering companies borrow names.

Skunk Works is an official alias for Lockheed Martin’s Advanced Development Programs (ADP), formerly called Lockheed Advanced Development Projects. Skunk Works is responsible for a number of famous aircraft designs, including the U-2, the SR-71, the F-117, and the F-22. Its largest current project is the F-35 Lightning II, which will be used in the air forces of several countries around the world. Production is expected to last for up to four decades.

Shoey, I read somewhere that they used the Skunk Works label cos they were a couple engineers from the real Skunk Works, who were keen on Dirt Bikes. You'd have tho't they'd have been brighter than to come up w that linkage system tho. Perhaps they were just cleaners at Lockheed Martin! The ram tube intake for rotary valve Kawasakis was a good idea tho.

[firko]

I've got a Skunk Works inlet manifold on the RT1 engine in my Cheney. It kind of looks like a reed block without the reeds. I'm guessing it's supposed to create some sort of vortex with the inlet gasses but I doubt wether it has any positive benefits. It looks cool though!

[Smithie]

i
Well the shock extensions as shown by MX 250 were very "hi-tech" and a very advanced project during their development , its a pity they didnt work , but having said that they did look very factory / trick on my Rt-360 yamaha.

Shoey

You must have scored them of Pat's 360. I can still remember fitting them....... We would have fitted anything in those days to get some rear suspension on those bikes.
Hi Rob

[motomaniac]

I had the same set up back in my hoon days on a old 500 triple Kawasaki.  :)Darcy

All My Days are "HOON" Days

Awesome Hoony

[pirie593]

I have just picked up on this thread.  Tim754 mentioned the Yamaha cans on the top of the front forks way back in 2007 when the thread started.

It reminded me of the Honda equivalent.  HRC shipped a set out in 1977 for the Oz titles (fitted to the 250).  I will see if I can find a photo.  They were shipped back shortly after the event.

[matcho mick]

errr,that rang a bell 593,i mechanicked for a honda dealer about then,stuck a set of  imported MX race factory forks (removed the top cannisters) on my XL175 work hack for a giggle,pissed myself laughing watching the forks action,not up n down,but to n fro,the frame/steering stem wasn't up to the forks standards,don't know what happened to them after that,they certainly wern't shipped back

[pirie593]

Matcho,

From memory they were nitrogen filled forks with no adjustment ?  The top reservoirs looked like great big ballons sitting up from the top triple clamp ...........can't imagine why HRC didn't persevere  

[NSR]

How about this .   

[mx250]

Definitely qualifies as wacky!!!!

[GD66]

Definitely FUBAR !

[asasin]

I like that SERGONI the guy must have been a F1 engineer in a former life!