Autopsy

**speedpro** · 8th February 2012, 08:50

Interesting checking out the cams in the background of the photos. Ramps have been steepened and max lift increased but not too excessive looking at them. Any chance of seeing a plot of lift versus crank position for stock and "race" cams? I know that's probably confidential, fair enough.

**richban** · 8th February 2012, 09:34

Originally Posted by speedpro

Interesting checking out the cams in the background of the photos. Ramps have been steepened and max lift increased but not too excessive looking at them. Any chance of seeing a plot of lift versus crank position for stock and "race" cams? I know that's probably confidential, fair enough.

What cam's. I didn't see any cam's. No would be the answer.

**Moooools** · 8th February 2012, 09:53

Keen on ordering some pistons in now?

**F5 Dave** · 8th February 2012, 15:17

Originally Posted by speedpro

Isn't there some rule about that sort of thing with "real" race bikes? It probably wouldn't hurt to encourage 4-stroke riders to put something in place. We could start with FXR riders. It may also be advantagious to have some sort of scatter shield or blanket like on drag race transmissions. Could be a use for old bullet-proof vests. I'd personally prefer to see something in 1/4" plate surrounding the bottom end and possibly filled with concrete.

Fairly strong words considering your Avatar. . .

**kel** · 8th February 2012, 16:11

Originally Posted by speedpro

Interesting checking out the cams in the background of the photos. Ramps have been steepened and max lift increased but not too excessive looking at them. Any chance of seeing a plot of lift versus crank position for stock and "race" cams? I know that's probably confidential, fair enough.

The ramps aren't nearly as aggressive as I expected, clearly my cams are far to wild on the exhaust.
Whats really suprising in the photos is the standard old dished piston (at least whats left of one), expected to see a nice high compression number in there.
Rich could you turn the cylinder so we could have a shot of the intake port? And over so we can see the combustion chamber. Cheers.

**Moooools** · 8th February 2012, 17:16

I thnk it is one of them shoddy Thai pistons. Made in the same factory as sweet chill sauce.

**richban** · 8th February 2012, 17:51

Originally Posted by Moooools

I thnk it is one of them shoddy Thai pistons. Made in the same factory as sweet chill sauce.

Yep. Machined to destruction. As far as more photo's that would just be wrong. Its a secret from now on. Everyone is getting to fast. I need any advantage I can get. No sharing and caring here. Its pure competitive bastard from now on.

**crazy man** · 8th February 2012, 18:54

Originally Posted by richban

Yep. Machined to destruction. As far as more photo's that would just be wrong. Its a secret from now on. Everyone is getting to fast. I need any advantage I can get. No sharing and caring here. Its pure competitive bastard from now on.

no need to worry about me my body is stuffed but will try to get out for some fun one day

**marktd** · 8th February 2012, 20:11

long live 2 strokes

**Yow Ling** · 8th February 2012, 20:25

Looks like the reverse engineering dept is working overtime tonight

**gav** · 8th February 2012, 20:52

So how long did that piston last? Thought you mentioned that you had been using that piston for while now?

**richban** · 8th February 2012, 21:04

Originally Posted by gav

So how long did that piston last? Thought you mentioned that you had been using that piston for while now?

1 x BOB 1 x GP about 5 wellington rounds and half a north island round. Left unmolested I am sure it would last as long as the other one I have. That one has lasted about 2 years of racing. Valve pockets were to deep maybe. It also could have been the lightened pin. We will never know. The piston was an akunar but it was the 15mm pin X version not the super cheap 16mm standard ones. Anyway onwards and upwards. Lets not dwell on the past.