at it again...a real pipe this time...

HeadSmess

HeadSmess

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May 17, 2010
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i been playing silly buggers with paper again. ill never grow up, every day should be craft day!

all glued together the right way...i hope?
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well, at least that bit looks fairly ok...
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i have to cut HOW many pieces? and hey, git boy! you glued number 18 over a hole! you gunna have to recut that one!
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no mucking around, all cut and deburred! thats the way i roll!
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rolled. get the welder out tomorrow, and zap zap...
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ill return with a comparison video soon. brand new engine, out of box. stock pipe versus a weasley pipe!
 
I just love your paper pipe setup !!!

You could spend all day creating differently presented pipes, just for a visual extravaganza, like convergent twin pipes.
 
paper is the only way to do these things! there is no way im cutting and welding steel without knowing if it will actually fit!

the process is pretty simple. BUT, if this pipe works out easily and i can weld it up in less than a day, ill invest in the profiles to be lasercut and make lots! lots and lots of them! maybe reduce the number of segments and increase the angle between each one, save on a lot of welding.

shame my welder decided to have a hissy fit as i did the 2nd tack weld. now im waiting on a new tig so i can finish. could oxy acetylene it but... i aint got any acetylene :( and seeing as i have a full bottle of argon... i need to use it :)
 
man I hope you will be wise enough to have the stinger internal to the belly area to cut the noise in half.
I used to race MX and a loud pipe was needed on the starting line to hear your engine to know where its rpm was, but anywhere other than that the loudness was unnecessary.
A belly-start stinger doesn't detract from hi rpm power but does give some mid range power.
 
i always stuff my stinger up the reversion cone. does the job. this one i didnt cus im experimenting!

finished. wheres the pics?...lets see now...

all tacked up
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funky header connection (patented)
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trialling, trialling...
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all glued up... only one or two pinholes so far!
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ok, i tuned this pipe for 7000rpm.

im not as happy with it as the one in my avatar, which was for 8grand. it winds out more! and sounds better!

then again this is a 26incher with 44T, thats a 20 with a 28T... this might just feel slow cus its taller? meh.

still, the pull up some of the hills around here is phenomenal! the lower speed helps.

i was trialling an experimental internal cone on the reversion, results...im not sure.

correct, there is another cone inside the reversion cone.

ive pulled it since taking these.

think ill make another one for 8 grand again... and try the cone thingy on that!

still sounds good :)

video? hmmm... yet to mount the cam to the bike itself, but lets see if i can work this one out...



yeah.

:cool:
 
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imbalanced approach

I hate to point this out but there is a huge discrepancy in technology with your ride.
You have made a super-duper exhaust pipe and yet you still have a stone age carburetor. Probably also the stock 4 stroke CDI too. Probably also weak engine compression. No reed valve. The effects of an expansion chamber are much more with a reed valve than with piston port intake. OK so if you don't have the money to spend I understand that but then you don't even have intake extension which is like throwing away usable power just because you don't want to spend $11 for an offset intake manifold and a few dollars for a 3/4" heater hose (cut to 2.5" length).
Everything on a 2 stroke is inter-related in a complex system and it strikes me hard when someone only focuses on one part of many that need to be upgraded together.
 
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