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  #1 (permalink)  
Old 03-15-2004, 10:36 AM
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Lightbulb Flamethowers (2stoke) ?

Hi!

I dont know if this is the right place to ask, but I think you hotrod guys have experience of flametrowers
So if this thread is disturbing, the webmaster can delete it.
But I givit I try,,,,

Can i have flamethrowers on a moped? (SACHS 2-stroke engine)
The 2 stroke is famous for have unburn gases. Thats why motocross and serious tuned mopeds have expansionscambers.

So can I just have a sparkplug with some sort of ignigtion and choke it? Will that work do you think? Or will it be som sort of explosion?

I would be very happy if someone could help me!

I attach a picture on my moped (Swedish Crescent 1957) customized of course :
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Old 03-15-2004, 11:27 AM
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HI,
Cool scoot!
I don't see why it wouldn't work. There is lots of info on the web about how to do this.. I'm not sure about the details, but I think all you need is a coil, switch, and spark plug.

BTW, I've always been a fan of scooters (I own a lambretta SX200 and a Vespa 125 primavera).
-alfie
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Old 03-15-2004, 11:44 AM
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Oki

Hi fredm thank you for the answer.
Im can not every english word, can you explain coil ? (I only know what coilovers is Lol)
My moped was a sort of scooter before i customised it. I post a picture how it looks stock. The rear end is almost like a 55 chevy
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Old 03-15-2004, 04:59 PM
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The coil is where the the spark generates from. Start at the spark plug, then follow the wire back to where the other end is. What that is connected to is the coil. Cool lookin scooter!
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Old 03-15-2004, 05:05 PM
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Nice scooter, Martin. You don't see thngs like that around here.
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Old 03-16-2004, 04:15 AM
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scooters

Thank you for the answer! Now I know what a coil is, dude. For some moths ago I got a email from a man in New York that had a Crescent (the scooter) (!).
In the 50's sweden exported some of this scooters to USA, cool to here that one is left. So have your eyes open, maybe you will find a Crescent in US to.
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Old 03-16-2004, 09:32 AM
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Arrow No flames

I tested today with a cigarette lighter in the end of the exhaust system (see picture). But no flames
even if I hade full choke and gased,,,,,is the lighter wrong sort of fire/ignigtion to make flames maybe or is the exhaust system to long or something??

Please, want tips and answers!
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Old 03-16-2004, 10:01 AM
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Gotta be a hotter spark than a cigarette lighter. You will probably have to wire a sparkplug into it permanently to get what you are after.

Kevin
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Old 03-16-2004, 10:09 AM
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Thx

Okey thanks! I suspected that, but just wanted to test with a lighter IF it worked. Wil test with a sparkplug later I also have another (more serious moped project) I have too work on and be finisht with first.

Look here if you want see the project:
http://f2.pg.photos.yahoo.com/martinhenriksson2000
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Old 03-17-2004, 01:47 AM
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Maybe I missed something here, but I didn't read anything about revving up the engine and killing the ignition to let the unburned mixture exit the exhaust. No choke is necessary. If you don't shut down the engine, there will not be any unburned fuel present to light off. Usually, there is a switch in the system that turns off the spark from the distributor coil, and turns on the exhaust pipe coil and sparkplug. After the engine coasts on down, you just let go of the switch and the engine fires back up. Possibly launching your muffler through the back of the garage - but that's part of the fun!
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Old 03-18-2004, 08:29 AM
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cool ride
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Old 03-18-2004, 02:21 PM
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damnit you guys! now i'm gonna wanna do that to my GoPed :-D haha
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Old 03-19-2004, 02:01 AM
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Quote:
Originally posted by lust4speed
Maybe I missed something here, but I didn't read anything about revving up the engine and killing the ignition to let the unburned mixture exit the exhaust. No choke is necessary. If you don't shut down the engine, there will not be any unburned fuel present to light off. Usually, there is a switch in the system that turns off the spark from the distributor coil, and turns on the exhaust pipe coil and sparkplug. After the engine coasts on down, you just let go of the switch and the engine fires back up. Possibly launching your muffler through the back of the garage - but that's part of the fun!
Okey, but I readed here in the forum about flamethrowers that they used to choke it. But I dont know. I thought that 2-stokes engines was leaving more unburned gases than a V8.

But if I fix a sparkplug with ignition to the end of the exhaust and revving the engine up and choke it. It will not come any flames?


Dude send som pics on your goped , when you "fixit"
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Old 03-19-2004, 01:33 PM
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Good luck with that Martin, but I think you are going to end up blowing the pipe off your scooter........

By the way, its pretty sharp.....the American Chopper crew would be proud.
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Old 03-19-2004, 03:09 PM
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Talking

Hahaha, yeah you are probably right Poncho, we will see where the exhaustsystem ends

Nice pickup by the way!
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