can't get it self sustaining.... Any ideas why???

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Jason
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can't get it self sustaining.... Any ideas why???

Post by Jason » Tue Aug 07, 2007 6:24 pm

I have built a gas turbine that doesnt become self sustaining..

Possibly there are too many holes that i have drilled on my flame tube...

Is it really a problem???

A little help please....

Iam using this turbocharger and running it on gas..
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Rossco
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Post by Rossco » Tue Aug 07, 2007 9:42 pm

Maybe you have a blockage stuck in it. Is it blowing chunks of fur? this would be a good indicator of foreign body ingestion.

Seriously tho. You need to show much more detail for some help.
I am no expert, by far, although i can say YES, the flame tube is very important. Put up some specs on it, and there is some very knowlegable people that will help.

And remember to remove the intake cover/cat before running.

Rossco
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Irvine.J
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LOL

Post by Irvine.J » Tue Aug 07, 2007 10:26 pm

BLOWING CHUNKS OF FUR LLLLOOOOLLLLL BWAAAHAHAHAHHAHAHA!!! Hope you guys can help him. Nice looking cat too btw :)
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racketmotorman
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Post by racketmotorman » Tue Aug 07, 2007 10:55 pm

Hi Jason
What are you using for a starter ??
Larger turbos "generally" have reasonably matched comp/turb assemblies so the turbo itself can be discounted as the problem unlike some small auto turbo which won't start because of serious flow mismatching betweenn comp and turb .
How much fuel/gas are you supplying?
At what pressure?
Turbines are extremely thirsty beasts , and you're running a decent sized turbo , so give her plenty of gas , by "gas" I hope you mean propane (LPG) not gasoline (petrol) .

With a strong enough starter and plenty of fuel she should scream :-))

Tell us more

Cheers
John

Viv
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Well thats ya problem mate!

Post by Viv » Wed Aug 08, 2007 1:07 am

Well thats ya problem mate! there in a nut shell see, yur CAT supposed to come after the Turbo on the exhaust side see! not the inlet

Corse it wont work like that now willet!

Viv;-)
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Monsieur le commentaire

tufty
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Post by tufty » Wed Aug 08, 2007 8:09 am

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Irvine.J
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Kitty

Post by Irvine.J » Wed Aug 08, 2007 11:07 am

Hahaha I love this thread, the possibilities are endless! :twisted:
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Jason
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Post by Jason » Wed Aug 08, 2007 12:05 pm

I am using LPG cylinder with regulator on...

May be thats what the problem is...

racketmotorman
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Post by racketmotorman » Wed Aug 08, 2007 11:03 pm

Hi Jason

Remove the regulator immediately , it'll only supply a very low gas pressure to the combustor , once the engine starts to spoolup a bit ,it'll be producing an air pressure within the combustor "higher" than the gas supply pressure , effectively shuting off the gas supply to the engine .
If your gas pressure downstream of the regulator is <1psi and "normal" idle air pressure (P2) is 4-5 psi , its pretty clear that the 1psi isn't going to work , you need full cylinder pressure, which can be up to ~80-90psi .
You'll also be needing a metal supply line(copper pipe) at least 1/4 inch diameter , with a ball valve in it for fast shutoff in case something goes wrong , the normal cylinder valve will take too long to screw down in an emegency .
Your engine is pretty big so it'll be needing lotsa gas at full bore :-))

All the best , enjoy the "noise "

Cheers
John

luc
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You guys got it all wrong ...

Post by luc » Mon Aug 13, 2007 1:56 pm

Naaaaaaaaaa ...

You guys got it all wrong .....

That's a JetCat ... Hé hé hé .... (http://www.jetcatusa.com/) .... LoL :-)

Cya,

Luc

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