Holy grail of frames I found it......

no it was a low end thing the idea seems sound to me if the bottle is sized right

it was a Yamaha gimmick in the 80's ...Yamaha were the masters of TLA's for their latest techno gadget on a bike. it was called ---wait for it...brain cells engaged, time machine set for 1983...broc glover in the add for the new yzingers with ... YEIS that's it! Yamaha Energy Induction System. Yamaha needed to go 1 up on the suspension acronyms - prolink, unitrak etc so they came up with this gem... I always thought a reed valve would render the gadget surplus to requirements.... ive yet to see an accurate dyno reading showing a real increase in power for the risk of a break in your induction systems integrity. I have seen sticks clip the bottles off bikes in the scrub causing weird running engines and long faces.

don't ask me who actually started the idea, its probably been around for years but the Yamaha marketers obviously thought it was ideal

True, but make sure you don't install the "DUNLOP" upside down. I had to turn my whole bike over to fix that

I was just stirring, poking the hornets nest whilst floggin a dead horse.

I know nothing.

I heard someone in the past say he was going to buy more powerband. One of the kids.

Thought that might be the case, but then I decided to drag the post out a little farther.

Now, back to the subject of the thread... How to make a grail out of holey frames.

Ok if we must. For me it's a frame that's unavailable: 82 430 air cooled with a 28 degree rake.

Picklito great to see on a post again. Well Pick do you think that we can do that 28 or 28.5 angle with triple clamps?
Have some folks who can do that.

Could be the next thing I do for 81/82 430s.

Or is it how to make a holy frame into a holy grail frame? Sounds like another Monty Python / black knight movie?


View: https://m.youtube.com/watch?v=2eMkth8FWno

my powerband ended up in my waistband along time ago

Wow, been a lot of years since I'd seen that. Favorite line in the movie "I'll bite your legs off"

And to think some people want to see this thread die.

like the dead parrot..."this thread is dead!!"..."no its not...its just resting"

Thanks GaryM. I don't see how that can be done with triple clamps? Changing trail, yes. Rake... is a hard geometry from the steering tube angle.

remember the can ams had variable steering geometry

yup TNT models had eccentric bearing cups. tuck it in for flat track and let it out for Moto/Enduro. 1974 250 TNT track n trail.

can someone enlighten me...did the last a/c wr's in 84 have the tighter steering geometry or just the LC's??

My 84s are same as my 82, both XCs Must be CR only

nah im sure now it was an LC spec

All 84 models are 28.5 degrees. It is in the specs master located on this site.

Later years angles went to 27 degrees

81 82 etc. had average or 31 degrees of caster.