Post by: beaner on July 30, 2012, 11:49:19 PM
Next season I may run an even older bike, and those pipes look just plain awful.
Just wondering if anybody here has done something similar, has any pipe building experience, or knows of any custom pipe builders that aren't ridiculously expensive.
Post by: cnrcpla on July 30, 2012, 11:58:21 PM
This is basically what I said, but in a video kind of thing: http://en.wikipedia.org/wiki/Expansion_chamber
Post by: Jeram on July 31, 2012, 12:28:11 AM
-expensive 2T software, or someone with the software who can give you a pipe spec
-lots of tools for cutting and forming the cone sections (tin snips, sheet metal rollers, cone mandrels, hammers etc etc etc
-great welding skills
-cone unfolding software
-lots of time, because your first few attempts will suck.
(I don't make my pipes, I dont have many of the above items, but I've watched it being done)
a custom one off pipe will likely cost you around $500 depending on who makes it for you
cheaper to cut and shut a pipe from another model if you find one that will definitely work, but it wont look as good or go as fast as a well made cone pipe.
Post by: SachsGS on July 31, 2012, 02:55:38 AM
I once adapted the stock pipe from a bike whose power delivery sucked (RMX) to a bike with a beautiful power delivery (GS6 Sachs special) and the results were the exact same gutless powerband, strange. I've made more then a few pipes, some worked very well and others with bizarre, two stage powerbands (oh well, back to the drawing board).
Post by: beaner on July 31, 2012, 03:03:08 AM
If you have any contacts, or know any people or places still making pipes, let m know. I did a search a little while ago, abut didn't ending finding much.
I don't think it would be too hard to improve on an old Can-am TNT up pipe.
Post by: Jeram on July 31, 2012, 07:48:44 AM
Post by: 2T Institute on July 31, 2012, 10:13:58 AM
I've also coached a few people on making pipes and as I say at the beginning if you start then be prepared to have at least the cost of a really good bike tied up in tooling. One thing to design the perfect pipe next is to get it to fit on the bike, up pipes are the hardest by far.
Post by: TotalNZ on July 31, 2012, 10:33:44 AM
I built my own tail pipe out of sheet metal, but it wasn't designed for anything but to be obnoxiously loud, I had a bet with my friend who had a 250f that my bike could be louder, and it was. But, I'm thinking your talking your talking about the expansion chamber part of the pipe. All I know about those is that the shape they are made in is so that unburned fuel can be sucked back into the engine through the exhaust port, the way the pipe is shaped makes the energy expand in the middle and then some of it bounces back, so to speak, at the end where it tapers off. Each bike pipe may be built a specific way for the engine, so I can't help you there.Why would you want your bike to be loud, louder than a four stroke of all things. loud bikes are ruining our sport.
This is basically what I said, but in a video kind of thing: http://en.wikipedia.org/wiki/Expansion_chamber
Post by: VintageBlueSmoke on July 31, 2012, 01:04:08 PM
However, there are pipes available for Can-Am's. Any that are made for the MX, work equally well on the TNT. The only real difference is the Rotery Valve.
Post by: SachsGS on July 31, 2012, 04:00:29 PM
Post by: VintageBlueSmoke on July 31, 2012, 04:07:44 PM
Post by: 2T Institute on July 31, 2012, 10:29:03 PM
2-stroke pipes are a black-art form. Basically because not two pipes are equal. It is an exercise in compromise. One will work good in one area while fail horribly in another. "Back in the day", Honda would show up with a trailer full of pipes...Even today, the pipe from FMF or PC can be improved upon for you current riding needs, track condition, altitude, and barometric pressure.
However, there are pipes available for Can-Am's. Any that are made for the MX, work equally well on the TNT. The only real difference is the Rotery Valve.
It is far from a black art. What is not understood is that everything must work together.
Post by: SachsGS on August 01, 2012, 12:24:55 AM
Post by: cnrcpla on August 01, 2012, 12:36:07 AM
Quote
Why would you want your bike to be loud, louder than a four stroke of all things. loud bikes are ruining our sport.It was a one time run with it in the woods (way out in the middle of no where where I live). It was just good fun and I wanted to see if I could make my bike louder, obviously I did, but I ran it once in the woods and hung it back up in the garage after I proved my point to my friend
Trust me, I didn't like not hearing out of my right ear, but the only people I bothered were woodland hermits 
Post by: riffraff on August 01, 2012, 06:12:42 AM
http://www.vintagesleds.com/library/manuals/misc/Two-stroke%20Tuner%27s%20Handbook.pdf
Post by: Jeram on August 01, 2012, 08:58:54 AM
up pipes are the hardest by far.
I thought squeezing an anaconda inside a fairing was