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Posted: Wed Feb 06, 2013 10:02 am
by KR-1R
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is the motor gonna be a hybrid (of brands) ?

Posted: Wed Feb 06, 2013 1:37 pm
by mj43
Nope
Well apart from a few bits such as pistons.
Other than that it will look just like Big K would have built it :wink:

To explain that and to provide a reason for the KR-2 rather than KR-1

I will remind you of how Kawaski number their models

A1, A2
S1, S2, S3
Mach I, Mach II, Mach III and Mach IV

Now all should be clear :D

and before TSI chips in yes I know it is far from ideal but it is what Kwack would have done.

For a bit of background have alook at the predecessor of the KDX200/220 - the KDX175

Kawasaki always reused bits from one model on to the next.....

Posted: Wed Feb 06, 2013 7:41 pm
by KR-1R
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with a 66mm bore and 50.6 stroke?

Posted: Wed Feb 06, 2013 7:57 pm
by mj43
:D

Posted: Wed Feb 06, 2013 8:54 pm
by fred
ime getting 346.25cc :?: are we getting warmer :?:

Posted: Wed Feb 06, 2013 9:08 pm
by KR-1R
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with 7.4mm shaved off the KDX200 cylinders (destroked from 58mm)
will they fit that close together?

Posted: Wed Feb 06, 2013 9:09 pm
by mj43
:D

S2 = 350
Mach II = 350
KR-2 = 350

Still a long way to go though.......

Posted: Wed Feb 06, 2013 9:14 pm
by mj43
KR-1R wrote:.
.
with 7.4mm shaved off the KDX200 cylinders
will they fit that close together?
No, I have a KDX cylinder and couldn't see any way to use it. Also the porting is all bottom end so no good for a performance machine.

Posted: Wed Feb 06, 2013 9:40 pm
by fred
are you casting some :?: i used to love doing the Cope and drag molds at school on a saturday ,the core work would be extreamly hard

Posted: Wed Feb 06, 2013 10:21 pm
by KR-1R
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these days you would probably require 3 sets of 3D print outs
the bore and ducts,
another set for the water galleries, and third one for the cylinder jacket (exterior)

a colleague at work (part time design student) has had jewellery 3D printed in sterling silver
I think using SLS (Selective Laser Sintering) or SHS or DMLS process

http://www.youtube.com/watch?v=IS4Xw8f9LCc

http://www.youtube.com/watch?v=PQzAKKpg0uY

investment casting titanium...
http://www.youtube.com/watch?v=WXFRRg8YMT0
^^^ ask that hammer company to do a group buy on some conrods O:)
3D printing in a material such as glass might be work for the voids - so it can be shattered and removed post casting (see ceramic slurry)

http://www.shapeways.com/blog/archives/ ... eways.html

Posted: Wed Feb 06, 2013 10:24 pm
by mj43
That is the plan

Posted: Wed Feb 06, 2013 10:24 pm
by mj43
That is the plan

Posted: Thu Feb 07, 2013 10:02 pm
by fred
ive got 20kg of gold star investment powder i bought for silver if anyone wants it,

Posted: Thu Feb 07, 2013 10:06 pm
by mj43
Fred
might have it off you let me read up on it

Posted: Thu Feb 07, 2013 10:16 pm
by fred
i didnt use it as i needed a vacume chamber to suck the air out the slurry as that would explode,