Author Topic: The ultimate 2 stroke pipe (Read 12530 times)

rsss396 · « **on:** July 10, 2013, 11:29:31 PM »

This pipe has a servo motor to adjust the tuned length of the pipe to match the rpms of the motor.
Longer pipe for low RPM's and shorter for high RPM's

http://www.youtube.com/watch?v=mvV4xbFKs0g&feature=relmfu

rk88r · « **Reply #1 on:** July 10, 2013, 11:42:58 PM »

That is cool. On the R maybe a trombone layout would work. Piston rings for sealing? Periodic cycling to keep the joints clean?

rsss396 · « **Reply #2 on:** July 11, 2013, 09:33:00 AM »

I forget the details how they sealed it put I know it took a few differant designs to get one that worked that sealed without binding up.

Not much room on a trx for the typical style pipe to have a adjustable header but maybe something that had less movement could be done

jcs003 · « **Reply #3 on:** July 11, 2013, 09:46:05 AM »

i theorized about a reed style pipe tuning that would have a similar result.

john

rsss396 · « **Reply #4 on:** July 11, 2013, 11:02:58 AM »

will postup some pics of your ideas

Rupp250 · « **Reply #5 on:** July 11, 2013, 11:09:28 AM »

My dad used to run Karts, he ran a dual KT100 class. The pipes on it were a slipper design. Had a cable that came up to the steering wheel that you could pull on in the upper RPM range. The slipper portion was internal unlike the video. Pretty cool set-up.

jcs003 · « **Reply #6 on:** July 11, 2013, 11:09:31 AM »

Quote from: rsss396;2817

will postup some pics of your ideas

the ideas havent made it that far. its all in my head.lol

john

troybilt · « **Reply #7 on:** July 11, 2013, 11:22:25 AM »

That's why I wanted to reverse the cylinder to run the exhaust straight out the back. Had a similar idea as this. Even modeled it... LOL!

rk88r · « **Reply #8 on:** July 13, 2013, 02:21:35 AM »

How much change in length would it take to broaden the rpm range by 2000? For example what difference in length between a trx5 and trx7?

363 stroker · « **Reply #9 on:** July 13, 2013, 02:27:28 AM »

Quote from: Rupp250;2821

My dad used to run Karts, he ran a dual KT100 class. The pipes on it were a slipper design. Had a cable that came up to the steering wheel that you could pull on in the upper RPM range. The slipper portion was internal unlike the video. Pretty cool set-up.

I drove a kneel down hydroplane boat like that. You would pull a lever on the straightaways and let go in the corners.
made a big difference in RPM. whole key was to remember when to pull and let go of lever.

rsss396 · « **Reply #10 on:** July 13, 2013, 02:26:15 PM »

Quote from: rk88r;3366

How much change in length would it take to broaden the rpm range by 2000? For example what difference in length between a trx5 and trx7?

about 300mm or around 11 3/4" for around a 2000rpm change

DOUGLAS · « **Reply #11 on:** July 13, 2013, 06:07:25 PM »

Thats an awesome design. just need some one to build it. i watched it over and over again it was starting to remind me of and old girl friend ha ha ha ha ha ha ha [should of kept her]

rsss396 · « **Reply #12 on:** August 09, 2013, 03:22:05 PM »

more adjustable exhaust header ideas

JesseA420 · « **Reply #13 on:** February 07, 2014, 04:33:10 PM »

https://www.bukupower.com/Pipes.aspx

the cone inside this pushes back (lengthening the exhaust) as the exhaust pressure rises just like how a powervalve opens.

jcs003 · « **Reply #14 on:** February 07, 2014, 04:45:42 PM »

Quote from: JesseA420;25052

https://www.bukupower.com/Pipes.aspx

the cone inside this pushes back (lengthening the exhaust) as the exhaust pressure rises just like how a powervalve opens.

this is very cool.

john