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Author Topic: where is it all going to end?  (Read 2183 times)

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Offline turboguzzi

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where is it all going to end?
« on: February 18, 2019, 04:46:05 am »
what's next, carbon pistons? :)

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Offline Tintop

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Re: where is it all going to end?
« Reply #1 on: February 18, 2019, 05:46:26 am »
Well that's certainly reduced to the minimum! :o  What is the application TG?
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Offline MRieck

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Re: where is it all going to end?
« Reply #2 on: February 18, 2019, 05:57:25 am »
I'd say 4 stroke motocross
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Offline bwaller

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Re: where is it all going to end?
« Reply #3 on: February 18, 2019, 06:10:02 am »
Pretty and disposable.
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Offline slikwilli420

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Re: where is it all going to end?
« Reply #4 on: February 18, 2019, 06:26:03 am »
Id have a thermal coating on the top of the piston to keep heat in the chamber. They look cool as hell, would be great for a road racer, if someone else was paying the bills!!
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Offline turboguzzi

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Re: where is it all going to end?
« Reply #5 on: February 18, 2019, 07:14:23 am »
I believe it's wsbk Panigale stuff.
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Offline slikwilli420

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Re: where is it all going to end?
« Reply #6 on: February 18, 2019, 08:28:06 am »
Quote from: turboguzzi on February 18, 2019, 07:14:23 am
I believe it's wsbk Panigale stuff.

So someone else is paying the bills. Haha.
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All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
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Offline Cb750 Racer

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Re: where is it all going to end?
« Reply #7 on: February 18, 2019, 10:44:30 am »
I think Wiseco had it right with their caged piston design. Though I haven't heard anything new about them in quite a few years so the end result couldn't have been THAT good. That piston above needs to see a doctor she's a little to anorexic for me  ;)
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Offline simon#42

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Re: where is it all going to end?
« Reply #8 on: February 18, 2019, 10:51:59 am »
somewhere i have a couple of pistons left over from one of the foggy petronas bikes , it is so shallow you have to take the rings off to remove the gudgeon pin .
they didnt last long .
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Offline bwaller

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Re: where is it all going to end?
« Reply #9 on: February 18, 2019, 03:14:26 pm »
That is always the question/dilemma. Do you want ultra light & cool, (ring holder) or something that will last a while.

I guess it depends on whether it's MotoGP or old guys racing vintage.  ;D

I wonder if that piston is steel?
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Offline Sam Green Racing

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Re: where is it all going to end?
« Reply #10 on: February 18, 2019, 04:01:22 pm »
Quote from: simon#42 on February 18, 2019, 10:51:59 am
somewhere i have a couple of pistons left over from one of the foggy petronas bikes , it is so shallow you have to take the rings off to remove the gudgeon pin .
they didnt last long .

Bad news Simon, no more servicing my Ferrari Eco Active, I got a new set of ultra light wheels today. :'( :'( :'(
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Offline MRieck

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Re: where is it all going to end?
« Reply #11 on: February 18, 2019, 04:12:29 pm »
Quote from: bwaller on February 18, 2019, 03:14:26 pm
That is always the question/dilemma. Do you want ultra light & cool, (ring holder) or something that will last a while.

I guess it depends on whether it's MotoGP or old guys racing vintage.  ;D

I wonder if that piston is steel?
I was wondering the same thing Brent
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Offline Tintop

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Re: where is it all going to end?
« Reply #12 on: February 18, 2019, 04:23:00 pm »
Quote from: MRieck on February 18, 2019, 04:12:29 pm
Quote from: bwaller on February 18, 2019, 03:14:26 pm
That is always the question/dilemma. Do you want ultra light & cool, (ring holder) or something that will last a while.

I guess it depends on whether it's MotoGP or old guys racing vintage.  ;D

I wonder if that piston is steel?
I was wondering the same thing Brent

Ti maybe? given the application.
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Offline gschuld

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Re: where is it all going to end?
« Reply #13 on: February 18, 2019, 05:06:32 pm »
« Last Edit: February 18, 2019, 05:15:06 pm by gschuld »
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Offline Tracksnblades1

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Re: where is it all going to end?
« Reply #14 on: February 18, 2019, 06:16:30 pm »
What amazes me is how this new technology always has a seed from the past.
Remember 4 valves per cylinder being cutting technology, but had flown overhead for years before.
I borrowed the picture from macvit7906 post under "mystery engine".
It's believed to be an antique Yoshimura two ring design.
« Last Edit: February 18, 2019, 11:42:41 pm by Tracksnblades1 »
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Offline seanbarney41

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Re: where is it all going to end?
« Reply #15 on: February 18, 2019, 06:34:28 pm »
Quote from: Tracksnblades1 on February 18, 2019, 06:16:30 pm
It's believed to be an antique Yoshimura two ring design.
Why would we believe that when it says RSC right on it?
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Offline Tracksnblades1

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Re: where is it all going to end?
« Reply #16 on: February 18, 2019, 08:59:59 pm »
Quote from: seanbarney41 on February 18, 2019, 06:34:28 pm
Quote from: Tracksnblades1 on February 18, 2019, 06:16:30 pm
It's believed to be an antique Yoshimura two ring design.
Why would we believe that when it says RSC right on it?

Yep,
So much for reading posts....?
And the like for cb350 below...
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« Last Edit: February 18, 2019, 09:14:56 pm by Tracksnblades1 »
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Offline simon#42

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Re: where is it all going to end?
« Reply #17 on: February 19, 2019, 10:47:43 am »
Quote from: Sam Green Racing on February 18, 2019, 04:01:22 pm
Quote from: simon#42 on February 18, 2019, 10:51:59 am
somewhere i have a couple of pistons left over from one of the foggy petronas bikes , it is so shallow you have to take the rings off to remove the gudgeon pin .
they didnt last long .

Bad news Simon, no more servicing my Ferrari Eco Active, I got a new set of ultra light wheels today. :'( :'( :'(

that is bad news sam , will come over to see you one night .
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Offline Sam Green Racing

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Re: where is it all going to end?
« Reply #18 on: February 19, 2019, 11:50:51 am »
Any time mate, the kettle is always on for you Simon.
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Offline Tracksnblades1

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Re: where is it all going to end?
« Reply #19 on: February 19, 2019, 02:55:21 pm »
Quote from: Cb750 Racer on February 18, 2019, 10:44:30 am
I think Wiseco had it right with their caged piston design. Though I haven't heard anything new about them in quite a few years so the end result couldn't have been THAT good. That piston above needs to see a doctor she's a little to anorexic for me  ;)

Is mum the word for wiseco...?
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Offline Don R

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Re: where is it all going to end?
« Reply #20 on: February 19, 2019, 03:36:50 pm »
 I have an 8.1L gm gas motor in my GMC duallie truck it's got slipper skirt pistons and they didn't get the bores correct. I've been listening to piston slap longer than I care to. Should have paid for the diesel, at least there would be a reason for the noise. These would have been better with some skirts. GM removed the piston to cylinder clearance spec from their manuals to solve the problem. 
Oops, should have posted in the PO'ed thread.
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