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Post by azwood on Mar 6, 2018 16:56:49 GMT -5
I'm also thinking I'll make a small air gap at the top between the ft and the can and put the chamber for the evap tube intake and jet thair keep things running cool
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Post by azwood on Mar 6, 2018 17:24:22 GMT -5
I need a jets for dummies been lol
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Post by smithy1 on Mar 6, 2018 17:29:06 GMT -5
I might need some help with the hole sizes and locations in not that great at math Ah..Math is a fairly essential part of our hobby...(Six munce ago I coodn't even spill injineer....now I are won..!)  The basic rules are 30%-20%-50% of impeller inducer area for Primary-Secondary-Tertiary zones of the F/T...the size and placing of the holes can be quite critical for a nicely running engine...also depends on what type fuel and what type of fuel injection system you use. LPG is quite forgiving and will allow for new engine development prior to stepping up to liquid fuels. The "Rules of Thumb" John linked to has all the info required for flame tube holes etc... Smithy. |
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Post by racket on Mar 6, 2018 18:27:25 GMT -5
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Post by azwood on Mar 6, 2018 18:29:04 GMT -5
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Post by azwood on Mar 6, 2018 23:26:55 GMT -5
That link dident work🤔 |
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Post by azwood on Mar 7, 2018 3:02:57 GMT -5
Ok so after beating steel around pretty much whatever I could find around the shed I'm pretty close to having the end cone sorted   |
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Post by azwood on Mar 7, 2018 3:04:45 GMT -5
Also oxy cut the flange it look like crap but I'll clean it up  |
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Post by smithy1 on Mar 7, 2018 14:04:39 GMT -5
That should work....you'll need to keep temps under control though....the center web of the turbine housings tend to suffer badly from the combustion heat.
Smithy.
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Post by azwood on Mar 7, 2018 15:39:48 GMT -5
That should work....you'll need to keep temps under control though....the center web of the turbine housings tend to suffer badly from the combustion heat. Smithy. Thanks I'll try port it nice and smooth |
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Post by azwood on Mar 7, 2018 18:43:44 GMT -5
Next up ft holes and vape tube arrangement
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Post by azwood on Mar 7, 2018 18:46:13 GMT -5
I was thinking of using an old riseing rate fuel reg I have in the oil system that way my pressure will always stay well above boost larval nomater what temp the oil gets do you guys think that's a good idear
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Post by racket on Mar 7, 2018 19:39:31 GMT -5
Hi ...........think "KISS" when engineering your engine , plenty of time for fancy add ons later , initially you want it as simple and bullet proof as possible to minimise the potentials for things to go wrong , you'll have more than enough to worry about without making sure the oilpressure is doing the right thing all the time .
What you must have in the lube system is a pressure switch that cuts your fuel pumps power if oil pressure drops below ~45-50 psi MEASURED AT THE TURBO LUBE INLET PORT, not the pump outlet .
Cheers
John
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Post by azwood on Mar 7, 2018 19:45:25 GMT -5
Hi ...........think "KISS" when engineering your engine , plenty of time for fancy add ons later , initially you want it as simple and bullet proof as possible to minimise the potentials for things to go wrong , you'll have more than enough to worry about without making sure the oilpressure is doing the right thing all the time . What you must have in the lube system is a pressure switch that cuts your fuel pumps power if oil pressure drops below ~45-50 psi MEASURED AT THE TURBO LUBE INLET PORT, not the pump outlet . Cheers John Yeah keep it simple stupid.thanks for the switch tip |
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Post by enginewhisperer on Mar 7, 2018 20:21:47 GMT -5
I have used a fuel regulator for oil pressure on a turbo turbine setup and it seemed to work pretty well. It might be too small for a larger turbine though so it's probably safest to start with making a simple system work to the intended specs.
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