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Post by smithy1 on Oct 10, 2016 2:20:30 GMT -5
What diameter is that wheel??
I might have something sitting here doing nothing you can use...
Cheers, Smithy.
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Post by jetjeff on Oct 10, 2016 4:08:32 GMT -5
Hi Smithy,
The current outer diameter is 2 27/32" (roughly 72mm).
I'm going to try to forward slant the compressor blades (nothing radical, maybe just 10 or so degrees), most newer turbochargers use forward slanted blades, there must be some increase in efficiency.
Jeff
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Post by smithy1 on Oct 11, 2016 1:04:22 GMT -5
Hi Smithy, The current outer diameter is 2 27/32" (roughly 72mm). I'm going to try to forward slant the compressor blades (nothing radical, maybe just 10 or so degrees), most newer turbochargers use forward slanted blades, there must be some increase in efficiency. Jeff Pity...I've got a couple of 66mm and ~54mm wheels floating around. Cheers, Smithy.
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Post by jetjeff on Oct 11, 2016 1:29:09 GMT -5
Hi Smithy,
No problem, thanks for checking. I actually don't mind making the turbine wheel, gives me something to do in the winter here in Michigan, other than watching my truck rust,,,lol.
Jeff
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Post by smithy1 on Oct 11, 2016 2:09:36 GMT -5
Hi Smithy, No problem, thanks for checking. I actually don't mind making the turbine wheel, gives me something to do in the winter here in Michigan, other than watching my truck rust,,,lol. Jeff LOL...I suspect all the salt they throw on the roads to help keep the ice/snow at bay is the culprit there..!!?? Cheers, Smithy.
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Post by jetjeff on Oct 11, 2016 3:38:31 GMT -5
Hi Smithy,
Yep, all the rock-salt applied to the roads. It's not uncommon for your drivetrain to outlast the body here. Had an Isuzu pickup where the frame was nothing more than a couple of rust molecules loosely holding hands,,,lol.
Jeff
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Post by smithy1 on Oct 11, 2016 14:26:41 GMT -5
Hi Smithy, Yep, all the rock-salt applied to the roads. It's not uncommon for your drivetrain to outlast the body here. Had an Isuzu pickup where the frame was nothing more than a couple rust molecules loosely holding hands,,,lol. Jeff LOL...Glad we don't have that problem here....I've got a 2008 Transit van, done just shy of 100,000kms....not a bit of rust to be seen anywhere. Cheers, Smithy.
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Post by jetjeff on Oct 11, 2016 18:22:05 GMT -5
I've got a 2006 Toyota Tundra, 218K (miles) on the clock, just breaking her in
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Post by jetjeff on Oct 12, 2016 18:46:58 GMT -5
Hi John,
I had my Heineken turbine up to 1.5 lbs of case pressure yesterday. I know it's tough to guesstimate, but at what point (pounds wise), would you think she would self sustain? I didn't make a funnel, but removed the rectangular 'attachment' and fed air from the shop vac directly into the trumpet (completely sealing the round tubing into the trumpet), seemed to help, thanks.
I distintly heard more of a roar, than just the whistle I heard before.
Jeff
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Post by racket on Oct 12, 2016 19:04:04 GMT -5
Hi Jeff
You might need double that pressure at this early stage of development , later once you know the engine and have fine tuned the start technique you might be able to use less , I like to see 5 psi minimum for my engines , keeps them well over the "hump" and running cooler .
With 1.5 psi you should only need more fuel for it to accelerate to a higher pressure , but keep the starter attached until the engine is sucking more than the vac can supply .
Cheers John
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Post by smithy1 on Oct 12, 2016 21:40:44 GMT -5
"but keep the starter attached until the engine is sucking more than the vac can supply." Cheers John LOL...I've had that problem with the 6041 on a couple of occasions....As you've seen John, my blower hose now has a nice rubber plumbing fitting on the end which seals very well on the turbo inlet....once she had spun up to self sustain, I was too busy watching the temps/oil pressure/rpm....etc.. that I nearly forgot to remove the blower....was actually quite difficult to remove it when the 6041 is breathing in hard..! Probably started to over-rev the poor old blower... Cheers, Smithy.
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Post by racket on Oct 12, 2016 23:48:43 GMT -5
LOL..............yeh , she certainly sucks some air , even at idle the 6041 compressor wheel is needing ~25 HP to drive it , thats a decent sized vacuum cleaner.
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Post by jetjeff on Oct 14, 2016 15:31:18 GMT -5
Hi All, BINGO!!!,,,self sustained if only for a second!!!! Woooo Hoooo! Case pressure was at 2 PSI. Can't wait to try ethanol. Jeff youtu.be/IH4MF7bVkTk
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Post by jetjeff on Oct 16, 2016 1:54:13 GMT -5
Hi All, I added a pump to the test stand (to the right of the turbine), it's a SIG gas passer, designed for R/C flight boxes. I felt the small pump found in the wand of weed/insect killer wouldn't supply the necessary volume. www.sigmfg.com/IndexText/SIGSH883.htmlJeff
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Post by racket on Oct 16, 2016 2:04:11 GMT -5
Hi Jeff
She's starting to make the right sounds :-)
Get those rpm up a bit more and the turb wheel should stop glowing
Cheers John
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