New guy to Buckets

[F5 Dave]

Aww, has someone got a knot in his Diapers?

[Drew]

Aww, has someone got a knot in his Diapers?

Not at all. I'm about to go pick up some spares for my bike and make a start on the pipes. I can't wait to ride it.. Might he different once I'm on my last motor though.

[Yow Ling]

I call bullshit, at least four stroke motors adhere to the principals they are designed around. You can do everything by the book with a filthy stinking dribbling fuckin two stroke and the shit heaps just won't work right!

maybe your book is out of date, or was never right

[Drew]

maybe your book is out of date, or was never right

Na, I just can't read.

[husaberg]

"Non-competition" is the determining test for legality.

I know I should let this die down and let Mossy have his thread back bu I can't help myself...

Flat-tops would decrease comp hugely by themselves, the 250/4's I've seen inside all have contoured tops to get the 12.5:1 or so ratios that they run.

Main problem of all this is that the motor is just so damn tiny.

I elected to get a much more cost efficient 2-stroke. That's a comparably easy build but it still stretches my resources super thin.

So should i let it die down as well but...
Even with allowing for the reduction in comp with the destroking to achieve the needed 6.5:1 for the 22 psi to make the supercharging worthwhile it does need dished pistons or no squish and massive detonation.

Here is the ideal supercharger
they don't come up very often so someone will snap these uphttp://www.trademe.co.nz/a.aspx?id=492361027
http://www.trademe.co.nz/motors/car-...-492574448.htm


Anyone attempting to do this should exclude the Honda CBR250 from there list of options as well as there would be bloody hard to destroke. The Kawa is to too overquare imo as well. That only leaves the suzuki or the Yam and the Suzuki's looks a lot less advanced in regards to its head design.

like these but forged of course if you want them to last.

http://www.tkrj.co.jp/goods/m-AH0370X--GB6-911.php

Anyway back to Mossy's Bucket brought anymore shinny stuff for it

[koba]

That only leaves the suzuki or the Yam and the Suzuki's looks a lot less advanced in regards to its head design.

Anyway back to Mossy's Bucket brought anymore shinny stuff for it

Sorry Mossy, gotta have another word.

I've had a good inside/out look at the Suzuki and the Kawasaki and a brief gander at the other two. I would say the Suzuki appears a lot less advanced in most areas, it seems to be a lot chunkier too, which is not a good thing.

[koba]

I call bullshit, at least four stroke motors adhere to the principals they are designed around. You can do everything by the book with a filthy stinking dribbling fuckin two stroke and the shit heaps just won't work right!

Yell bullshit all you want, I hope it help relieve some of those frustrations that seem to bother you so.

If a 100cc forced induction engine shows up and starts doing better that what is out there now I'll buy you a beer.

For the record: I don't think that is impossible, hell I'd love to see it but I sure as hell ain't going to be the one putting time time and money into development.

[koba]

6.5:1 for the 22 psi

Without pulling ten books and a calculator out I'd suggest that the comp ratio could be way higher for such a small combustion chamber.
12.5:1 for a std GSXR250 if I recall correctly; that will run quite fine on 91 octane.

[husaberg]

Without pulling ten books and a calculator out I'd suggest that the comp ratio could be way higher for such a small combustion chamber.
12.5:1 for a std GSXR250 if I recall correctly; that will run quite fine on 91 octane.

All the calculations i was able to muster (Plenty) pointed to those to get the Hp i was aiming for.
The heat was the issue (these were i should say based on a Routes blower) which by nature of their design transfer a lot of heat if you can use a say screw or centrifugal blower yeah you can go higher for sure....
but the manner in which the there boast is delivered is much more problematic...... same as a Turbo scenario for instance
If anyone is dead serious i will see if i can retrieve them? maybe start a separate thread to stop clogging Mosseys.

http://www.kiwibiker.co.nz/forums/sh...post1130355106

[mossy1200]

http://www.trademe.co.nz/motors/moto...-492395913.htm

We could all chip in and get a club dyno. Only Drew cant use it as he might have over 50hp

Made the manifold. Just needs the 2 parts welded together. Should be good for tomorrow. Muffler didnt arrive today. May have to make some temp front axel sliders if the UK parts dont turn up. Im oncall again this week but have someone to cover Sunday.

[Drew]

http://www.trademe.co.nz/motors/moto...-492395913.htm

We could all chip in and get a club dyno. Only Drew cant use it as he might have over 50hp

How come all of a sudden I'm gonna have a bike that'd keep up with something the ESE guys built?

I know nothing about two strokes, I fucken hate the things, and if it would make a reliable 18-20 ponies I think I would shit myself with sheer delight and surprise.

[mossy1200]

How come all of a sudden I'm gonna have a bike that'd keep up with something the ESE guys built?

I know nothing about two strokes, I fucken hate the things, and if it would make a reliable 18-20 ponies I think I would shit myself with sheer delight and surprise.

When you see my trick ally manifold drew you know your going to want to bring me beers for a twin 24mm Y intersection Mossy Mani.
I spotted so 24internal ally pipe while I was on the scrounge for 30mm today.

[koba]

How come all of a sudden I'm gonna have a bike that'd keep up with something the ESE guys built?

I know nothing about two strokes, I fucken hate the things, and if it would make a reliable 18-20 ponies I think I would shit myself with sheer delight and surprise.

I've heard they are meant to be about 16 std so that's hardly shooting for the moon.
That's based on racetrack rumour so can't be held as reliable.

[mossy1200]

I've heard they are meant to be about 16 std so that's hardly shooting for the moon.
That's based on racetrack rumour so can't be held as reliable.

Agree. They were 15-16 stock. Y intersection 24mm carb to 63cc per cylinder and 2 good expansion chambers and you would be near 20 already.
Im tempted to make my next bucket a gt powered one.

[Drew]

Team GT racing then? I've got two spare motors but only one spare crank and that needs a rebuild.

Motor in my bike is different to the spares though. It's piston over reed ported, but the spares are straight piston ports. Dunno what's going on there.

I'm also picking up an RGV that is screaming to be turned into something good next weekend.