Kawi2strokes.com Forum
http://www.kawi2strokes.com/forum/

clank, claNK, CLANK!
http://www.kawi2strokes.com/forum/viewtopic.php?f=5&t=4706		 Page 9 of 11
Author:  Ja-Moo [ Wed Oct 31, 2012 3:10 pm ]
Post subject:  Re: clank, claNK, CLANK!
As I posted before, I just used the wrong template, it was pretty close to the piston on the right. :shock: As you can see, the skirt did crack, there just wasn't enough material left. But, that's testing! :thumbup:

I personally wouldn't use the half moon cutout on motors not designed from the start for reed valves. As you can see on the Yammi piston, the bottom of the skirt is much closer to the piston pin, so the leverage is a lot less, and a lot of piston above the pin for support.

Image
Author:  Walms [ Wed Oct 31, 2012 3:22 pm ]
Post subject:  Re: clank, claNK, CLANK!
I can tell from the right piston that you are not shy! :mrgreen:
Author:  Ja-Moo [ Wed Oct 31, 2012 3:37 pm ]
Post subject:  Re: clank, claNK, CLANK!
Walms wrote:
I can tell from the right piston that you are not shy! :mrgreen:


Better I break stuff first, don't you think?........... :P
Author:  Walms [ Wed Oct 31, 2012 4:35 pm ]
Post subject:  Re: clank, claNK, CLANK!
Yeah, I can live with that... :lol:
Author:  Jim C [ Wed Oct 31, 2012 4:59 pm ]
Post subject:  Re: clank, claNK, CLANK!
R&D
Research and Destruction!
Author:  H2RTuner [ Wed Oct 31, 2012 8:46 pm ]
Post subject:  Re: clank, claNK, CLANK!
Lets see, OW31 Replica pistons have been in use in various race engines since 1976, along with more than a few stock pistons modified just like them, BOTH IN RACE ENGINES, AND ON THE STREET, not only by me, but, a lot more of those I know that build engines and ride them.

Then, according to all of the rest of you that have NEVER TRIED IT, THEY DON'T LIVE.

Really nice to see those that have NO experience with things know so much about them, and disbelieve those that HAVE done it, had it work and live, VERY WELL.

NOTHING quite the same as a person, or group of persons with both a completely closed mind, and, whom knows it all, even when they have never done it.

If they didn't work, do you really think Yamaha would have still used them? Not a chance. I can see all this will lead to even more of the experts telling me I don't knowing what I am speaking of, because they know more than I do, on stuff I already did. So, I have other things to do. I never should have responded with any info, to this, or any topic, on this board. I should have just sat back and read only, just like I have been doing.

Enough, see ya.
Author:  Steve [ Wed Oct 31, 2012 9:08 pm ]
Post subject:  Re: clank, claNK, CLANK!
Honda TRX450R/ER Piston

Image

New piston before/after

Image

Here is another one - before/after/final

Image

Image

Another version -

Image

Good times back then....
Author:  AER005 [ Thu Nov 01, 2012 12:55 am ]
Post subject:  Re: clank, claNK, CLANK!
I wish to thank tuner for all his knowledge , It is so good to here all the history of racing mods from the 70s , keep it up , :thumbup: :thumbup:
Author:  RODH2 [ Thu Nov 01, 2012 2:21 am ]
Post subject:  Re: clank, claNK, CLANK!
^ Yeah, be nice if he could relax a little.............. :?
Author:  ZERO [ Thu Nov 01, 2012 3:52 am ]
Post subject:  Re: clank, claNK, CLANK!
Tuner has been very helpful. I value the opinion of anyone that is trying to help out our cause. Especially when it comes from someone with first hand knowledge.:thumbup:
Page 9 of 11 All times are UTC - 5 hours
Powered by phpBB® Forum Software © phpBB Group
http://www.phpbb.com/