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| Enviromoto |
 Posted: Wed May 12, 2010 12:39 pm |
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Joined: 23 Feb 2009
Posts: 187
Location: Camby, IN.
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zombie wrote: (.)(.) The only answer I have is (.)(.)
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| C-kell |
| Posted: Sun May 16, 2010 12:46 pm |
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Joined: 28 Jul 2009
Posts: 76
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2strokd wrote: Got any pics of the "hand coned adjustable exhaust"?
Sounds interesting! That frame brace is STOUT  !!! |
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C-Kell |
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| 2strokd |
| Posted: Sun May 16, 2010 1:47 pm |
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Joined: 28 Oct 2009
Posts: 273
Location: Lafayette IN
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That is pretty cool man!
Got any pics of that  ? |
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01 Aprilia SR50 DiTech-Being parted out!
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| C-kell |
| Posted: Sun May 16, 2010 1:59 pm |
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Joined: 28 Jul 2009
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2strokd wrote: That is pretty cool man!
Got any pics of that ? |
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C-Kell |
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| 190mech |
| Posted: Sun May 16, 2010 6:36 pm |
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Joined: 01 Oct 2009
Posts: 99
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| Didnt they use the sliding spacer pipes in the Kart world?Seem to remember how they were cable operated with a spring loaded return.. |
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| Mexicano |
| Posted: Sun May 16, 2010 8:05 pm |
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Joined: 12 Jul 2007
Posts: 2107
Location: Mexico
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190mech wrote: Didnt they use the sliding spacer pipes in the Kart world?Seem to remember how they were cable operated with a spring loaded return..
Yes, same was used in radio control airplanes with 2 t engines.. |
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‘There is only one secret in scooter tuning – to know what you are doing and do it thoroughly’ |
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| C-kell |
| Posted: Sun May 16, 2010 8:33 pm |
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Joined: 28 Jul 2009
Posts: 76
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| Cool.So do the exhaust for the karts and R.C.s constantly adjust with more or less throttle?We are making one that is adjustable but not that crazy.It wont be continuously moving. |
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| Mexicano |
| Posted: Sun May 16, 2010 8:58 pm |
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Joined: 12 Jul 2007
Posts: 2107
Location: Mexico
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C-kell wrote: Cool.So do the exhaust for the karts and R.C.s constantly adjust with more or less throttle?We are making one that is adjustable but not that crazy.It wont be continuously moving.
Well...those RC exhaust that I had 15 years ago didn't adjust with throttle position, just had some sort of "wing nuts" to adjust to engine bast performance, the header lenght could also be adjusted with a kind of "rubber tube". |
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| C-kell |
| Posted: Sun May 16, 2010 9:51 pm |
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Joined: 28 Jul 2009
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Mexicano wrote: C-kell wrote: Cool.So do the exhaust for the karts and R.C.s constantly adjust with more or less throttle?We are making one that is adjustable but not that crazy.It wont be continuously moving.
Well...those RC exhaust that I had 15 years ago didn't adjust with throttle position, just had some sort of "wing nuts" to adjust to engine bast performance, the header lenght could also be adjusted with a kind of "rubber tube". |
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C-Kell |
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| 190mech |
| Posted: Mon May 17, 2010 4:47 am |
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Joined: 01 Oct 2009
Posts: 99
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Kart guys had a lever to move the mid section,longer for the twisties,short for the straights.This is from years ago,dont know if its still done with the
pipe technology advances lately.. |
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| 2strokd |
| Posted: Mon May 17, 2010 9:54 am |
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Joined: 28 Oct 2009
Posts: 273
Location: Lafayette IN
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Makes so much sense tho..
Hhhhmm, an adjustable pipe and variable valve,
oopps i mean port timing. Now that would be sweet! |
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01 CPI Misketo MZ- Drag scooter
01 Aprilia SR50 DiTech-Being parted out!
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| C-kell |
| Posted: Mon May 17, 2010 8:50 pm |
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Joined: 28 Jul 2009
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2strokd wrote: Makes so much sense tho..
Hhhhmm, an adjustable pipe and variable valve,
oopps i mean port timing. Now that would be sweet! |
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C-Kell |
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| 2strokd |
| Posted: Tue May 18, 2010 12:12 pm |
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Joined: 28 Oct 2009
Posts: 273
Location: Lafayette IN
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| No but i have rebuilt a 2T on dirtbike with one. Very neat concept. Like having an adjustable power band. |
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01 Aprilia SR50 DiTech-Being parted out!
03 Kymco Cobra- Daily driver |
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| Mexicano |
| Posted: Tue May 18, 2010 12:28 pm |
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Joined: 12 Jul 2007
Posts: 2107
Location: Mexico
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C-kell wrote: Oh ya.I forgot about power valve engines.They use them in quads.Has anyone ever seen them in scoots?
There are different Power Valve Systems, depend on the manufactures, Honda had a "V-tacs" (Variable Torque Amplification Chamber System) on their Honda RC 50 years ago....
Soeone told me that the YPVS (Yamaha power valve system) is the most reliable system out there...
Regards, |
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| 190mech |
| Posted: Tue Jun 01, 2010 8:32 pm |
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Joined: 01 Oct 2009
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