builder bob
New member
I actually haven't had any time to do any of the reading, to busy. I definitely do need to learn to weld... and also get a welder.
How do I hydroform a tuned pipe?
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Ted Hamilton
Vintage Kart Afficionado
Two strokes have become highly tuned engines, sensitive to both intake and exhaust. The function of a tuned exhaust is to use resonant sound waves to force some of the intake charge back into the cylinder as the exhaust port is closing, essentially functioning like a turbo or supercharger. A change in exhaust temperature affects performance. A change in exhaust length affects performance. Thickness of metal of pipe affects temp. Pipe material affects temp. Intake length affects exhaust operation. Exhaust length affects intake operation. Like I said, it's a tuned system. And since it's all "theory", it's possible to make a pipe that "should" work and doesn't. It's also possible to stumble onto something that shouldn't, and does. I recommend reading Gordon Jenning's "Two Cycle Tuner's Handbook" (http://www.datafan.com/Horsepower_Blog/gordon-jennings-two-stroke-tuners-handbook/)
Good luck, have fun, be safe. Not neccesarily in that order.
Good luck, have fun, be safe. Not neccesarily in that order.
builder bob
New member
I've got a lot o reading to do!
Doc Sprocket
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Two strokes have become highly tuned engines, sensitive to both intake and exhaust. The function of a tuned exhaust is to use resonant sound waves to force some of the intake charge back into the cylinder as the exhaust port is closing, essentially functioning like a turbo or supercharger. A change in exhaust temperature affects performance. A change in exhaust length affects performance. Thickness of metal of pipe affects temp. Pipe material affects temp. Intake length affects exhaust operation. Exhaust length affects intake operation. Like I said, it's a tuned system. And since it's all "theory", it's possible to make a pipe that "should" work and doesn't. It's also possible to stumble onto something that shouldn't, and does. I recommend reading Gordon Jenning's "Two Cycle Tuner's Handbook" (http://www.datafan.com/Horsepower_Blog/gordon-jennings-two-stroke-tuners-handbook/)
Good luck, have fun, be safe. Not neccesarily in that order.
I thank you from the bottom of my heart, for typing all that without misusing the term "back pressure".
jamyers
Well-known member
Doesn't every engine ever made need lots of back pressure for more horsepower???
(Ducks and runs)
(Ducks and runs)
Doc Sprocket
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AuuuggggghhhhH! Need an emoticon showing me slitting my wrists with a shard of flywheel (which, of course, detonated at 3601 RPM)
builder bob
New member
AuuuggggghhhhH! Need an emoticon showing me slitting my wrists with a shard of flywheel (which, of course, detonated at 3601 RPM)
I found a welder on ebay, hopefully will be able to get it.
mckutzy
Well-known member
Care to tell us?
builder bob
New member
it was a almost new Lincoln weld pak 100 that I was going to win on ebay but... my internet connection was to slow
Doc Sprocket
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Too bad you're not closer. I'm selling mine. SO new, it's still got 1/2 the warranty left.
builder bob
New member
lol ur a little far away...
found some more welders, sent out some emails, now i'm waiting. I hope I get one by the weakend
found some more welders, sent out some emails, now i'm waiting. I hope I get one by the weakend
Doc Sprocket
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I hope you have better luck than me. I was communicating back and forth for a week, trying to schedule a time for me to drive up to him. So, I'm ready to go (the deal is as good as made, on the phone) and at the end of a day of waiting for this clown to call me back, I get an email, "Sorry Chris- It's sold". Thanks, jackass.
So- after work today, I found myself at a welding supplier. I also found myself dropping over $1000 on a brand new Lincoln Power Mig 180 Dual. That ain't happening ever again! But, OMG, it's gorgeous!
So- after work today, I found myself at a welding supplier. I also found myself dropping over $1000 on a brand new Lincoln Power Mig 180 Dual. That ain't happening ever again! But, OMG, it's gorgeous!
exenos
Project Nut
I'd never be able to spend that much on a welder.
Doc Sprocket
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Me neither, frankly- and I WILL be feeling guilty for awhile. But- it's like this: I have had a rather tough year. Physically demanding, with a lot of BS and politics at work. Lots of stress on many different levels (not just work). My income tax return was pretty juicy, I have picked up a week's worth of side work (evenings, good for about $1000 in my pocket), and I'm gonna recoup some cost by selling my "old" welder. I decided to treat myself, knowing darned good and well that this opportunity just will not come a second time. I have been dreaming of a more versatile machine (this one will do up to 1/2"!) And is the last machine I will ever have to buy.
exenos
Project Nut
Wow, seems like the planets just lined up for that one. Like you said, hard to have a better situation than what you have right now. I actually just had to file my income tax for the fist time this year and I gotta say its a nice feeling coming home and finding a weeks wages in the mail box.
Do you guys always get something back after filing your tax, or is it only if you have had a lo of medical expenses etc that you have claimed? How does it work over there?
Doc Sprocket
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We are getting well off topic...
In short- An amount of income tax is deducted by the employer and submitted to the government every pay period. When we file our annual tax return, we submit various other expenses (including medical stuff) that we can "write off". The expenses we can deduct are compared to the taxes we submitted. If we still gave too much, we get some back. If not enough was deducted, we end up owing the government.
Frankly, I'm a tax dummy- I don't understand much of it, and still learning what I can deduct. Fortunately, my wife is studying to become an accountant. In the last 3 years, I went from only getting a couple hundred back to a few thousand. Yet another reason to keep her around!!! LOL
In short- An amount of income tax is deducted by the employer and submitted to the government every pay period. When we file our annual tax return, we submit various other expenses (including medical stuff) that we can "write off". The expenses we can deduct are compared to the taxes we submitted. If we still gave too much, we get some back. If not enough was deducted, we end up owing the government.
Frankly, I'm a tax dummy- I don't understand much of it, and still learning what I can deduct. Fortunately, my wife is studying to become an accountant. In the last 3 years, I went from only getting a couple hundred back to a few thousand. Yet another reason to keep her around!!! LOL
builder bob
New member
no one ever responds to my emails/phone calls when I email (on the day it was posted) about a welder! and now I won't be getting one for a wile anyways because I just bought a new snowboard. there's so much I want/need to weld and now i probably won't be able to get one until the summer! boohoo
anybody want to buy a snowboard?
there's so much I want/need to weld and now i probably won't be able to get one until the summer! boohooanybody want to buy a snowboard?
Doc Sprocket
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How many HP?
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