jamiep
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Joined: November 2010
Posts: 102
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Post by jamiep on Apr 19, 2011 11:37:16 GMT -5
can you use carbeurator jets for the afterburner? (will they stand up to the heat?) Attached is a pic of the air intake side of my turbocharger with a ruler next to it. Just so I understand, what is the max rpm on this unit? (didn't know for sure which measurement to calculate from).. Jamie Attachments:
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jamiep
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Post by jamiep on Apr 19, 2011 11:37:47 GMT -5
Here is another: Jamie Attachments:
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Post by Johansson on Apr 19, 2011 15:30:48 GMT -5
can you use carbeurator jets for the afterburner? (will they stand up to the heat?) There is really nothing to it, if you can drill a hole you can make an afterburner fuel jet.  |
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Post by racket on Apr 19, 2011 17:06:36 GMT -5
Hi Jamie
At 2.75 " dia at the exducer , use a max of ~120,000 rpm to obtain a safe tip speed of 1450 ft/sec
Cheers
John
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Post by turbochris on Apr 20, 2011 0:30:09 GMT -5
look how nice this thing runs. You can see when I add fuel and then by increasing the N1 rpm more air. Wide operating range. youtu.be/GlOVEex2RCwyoutu.be/6Waf2ycyKWYListen to how excited the drunk brothers get in the second video. |
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jamiep
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Joined: November 2010
Posts: 102
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Post by jamiep on Apr 20, 2011 9:03:15 GMT -5
LOVE the burned lawn in the first video lol. Thing throws some serious fire. Looking forward to getting mine done. I started on the air intake ring last night just need to get the tube welded in to hold the fiber optic sensor cables. I probably spent 30 minutes just staring at the thing over a beer last night enjoying what I had built. Hard to believe it all started out as a pile of raw steel.  Jamie |
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jamiep
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Joined: November 2010
Posts: 102
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Post by jamiep on Apr 21, 2011 13:11:25 GMT -5
Another question on the afterburner - are you running any kind of a spark/glo plug or does the exhaust have enough heat to light it off?
jamie
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jamiep
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Posts: 102
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Post by jamiep on Apr 27, 2011 12:40:20 GMT -5
This is the air intake - one port is the oil fume vent, the other for fiber optic sensors for rpm sensing. The other piece is the jet exhaust nozzle. It has a port for a pyrometer sensor. For now, it is slightly flared with no reduction. Once I get the engine running, I will build the afterburner restrictor section. Jamie Attachments:
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jamiep
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Joined: November 2010
Posts: 102
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Post by jamiep on Apr 27, 2011 12:43:13 GMT -5
Coming along! Got the intake and jet nozzle mounted. Also started getting hydraulic hoses custom made. Also epoxied the fiber optic cables in the intake. Sooo close! but still tons to to.  Jamie Attachments:
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Post by racket on Apr 27, 2011 16:21:33 GMT -5
Hi Jamie
Not a good idea to feed oily fumes into the compressor , it soon fouls it with a buildup of oil and fine dust particles, reducing its efficiency :-(
Better to feed the oily fumes to near the jet exhaust where they'll get blown clear .
Cheers
John
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wolfdragon
Senior Member
Joined: April 2011
Posts: 287
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Post by wolfdragon on Apr 27, 2011 16:40:52 GMT -5
What oil pump are you using?
And I think we might have exactly the same turbo...
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Post by Johansson on Apr 28, 2011 1:51:52 GMT -5
Looking good that rig! |
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jamiep
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Joined: November 2010
Posts: 102
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Post by jamiep on Apr 28, 2011 8:51:56 GMT -5
Wolfdragon - I am using an ebay turbocharger and for the oil pump, a Shurflo 8009-541-236 12volt oil pump.
Everyone else - thanks for the compliments/advice...keep it coming!
Jamie
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Post by racket on Apr 28, 2011 16:07:50 GMT -5
Hi Jamie
Your oilpump might not be suitable , according to the Specs it has Viton seals rather than the buna ones suitable for "oil", and that 1GPM flow is with nil pressure and water flow , not thick oil ....................be careful , do lotsa monitoring , an unsuitable oil supply is about the worst thing possible for one of our engines .
Cheers
John
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jamiep
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Joined: November 2010
Posts: 102
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Post by jamiep on Apr 29, 2011 8:45:06 GMT -5
I will keep an eye on it... the input for the turbo is 1/8npt so pretty small. I have a bypass and gauge in line with it so I should be able to keep an eye on it. As for the seals, is it possible to put different seals in them?
jamie
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