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Post by Deleted on Mar 24, 2013 1:58:19 GMT -5
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Post by alleyoop on Mar 24, 2013 2:45:10 GMT -5
Suggestion put your pics on the forum do not require people to go to FB.
Alleyoop
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Post by terrilee on Mar 24, 2013 8:00:11 GMT -5
alot of us older people dont have facebook or tweeter
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Post by Deleted on Mar 24, 2013 11:57:38 GMT -5
I couldn't get the picture to upload. It did on 49ccScoot. I'll see if
I can fix it. There's a video on YouTube as well.
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Post by triker on Mar 24, 2013 12:05:18 GMT -5
That is a good video animation of how that engine works.  Roy |
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Hypocycle 2T
by: oldchopperguy - Mar 24, 2013 13:22:23 GMT -5
Post by oldchopperguy on Mar 24, 2013 13:22:23 GMT -5
alot of us older people dont have facebook or tweeter
It's the TRUTH! Sometimes in our senior years, it seems like we hardly have a tweeter at all. Sometimes the Wife has trouble with her woofer.And I can't get my face close enough to a book to focus on what's in it. I don't indulge in any of the modern electronic doodads either. I'm still learning to use e-mail. I'm still not sure if touch-tone phones are going to catch on... I'm saving a couple of "Princess" phones with real rotary dials... And color-TV? That can't possibly last... C'mon now, "high-tech" only means "it was designed by a guy who actually graduated high-school..." Leo (still not accepting June Cleaver's demise) in Texas |
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Post by JR on Mar 26, 2013 20:07:09 GMT -5
nice video.
I would be concerned about the side of the piston that has the big cutout. It seems to me that just a little wear would make it unstable and it would go through the side of the cylinder.
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Post by Deleted on Mar 27, 2013 0:17:00 GMT -5
Thanks triker and Doug Facebook took it down and it's been flagged on YouTube already for the sound track. I was going to rerecord it without the "Foo Fighters" but that would just be lame. I prototyped the crank arrangement by retro fitting everything into a string trimmer engine. The piston was a "cap and stem" assembly using retaining compound... and being that 2T pistons are always under compression I didn't have to worry about it flying apart. I never tried the cut-down piston. That's been 12 or so years ago. I drew this up a few years ago to keep my SolidWorks skills up and the cap-and-stem piston just looked like so much wasted space. Who knows? ~ I might give it another go someday  |
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Post by skuttadawg on Mar 27, 2013 1:14:16 GMT -5
I put a Wiseco racing piston in a Honda CR125 and it has a shorter skirt than stock plus its forged rather than just cast .
There is HPFC or stuffer cranks on 2Ts that have more material on the base resulting in a higher compression in the crank area . Hoca has some with plastic inserts but I like how Stage 6 is all metal and not too much more
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..BAD TO THE BONE..
