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Post by jetjeff on Oct 24, 2016 14:56:23 GMT -5
Hi Ralph/All, Turbine start #5 ended in disaster, the compressor wheel exploded, thankfully I was unhurt. Unfortuneatly my memory card filled up and I don't have a video of it. Case pressure was at 3 PSI when the wheel grenaded. In the words of Thomas Edison, I don't count my 350 failed attempts at making a light bulb, a failure, I view them as 350 ways of how not to make a light bulb. The NTSB/FAA haven't shown up at my door,,,yet,,,lol. Jeff
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Post by racket on Oct 24, 2016 16:29:15 GMT -5
Hi Jeff
OUCH !!
Yep , one step closer to a working design .
3 psi is kinda low for it to shatter.
Cheers John
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Post by jetjeff on Oct 25, 2016 1:30:00 GMT -5
Hi John,
Yep, I agree on the 3 PSI being low for it to shatter. Hard to determine why this happened, I feel it may have been a balance issue, or possibly a bit of swarf from the shop vac was launched into the compressor. I feel the cover plate is what failed first, then the blades, as the base disk is undamaged.
I'm going to machine a compressor from aluminum (without cover plate). Failure is not an option.
Jeff
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Post by racket on Oct 25, 2016 16:03:58 GMT -5
Thats the spirit :-)
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Post by smithy1 on Oct 25, 2016 20:20:57 GMT -5
Bugga..!
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Post by jetjeff on Oct 26, 2016 15:14:21 GMT -5
Hi All, I mounted my old build to the test stand. Here is the first start attempt. It didn't register any pressure on the gauge, nor did it start pushing oil into the engine, but it sounded promising. I'm a little hesitant to really open the propane valve from what happened to me earlier in the week. Sorry for the dark vid, it's an overcast day today. youtu.be/kREyduWcVWMJeff
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Post by jetjeff on Oct 26, 2016 23:44:15 GMT -5
Hi All, This weekend, I'll start hogging out a compressor for the Heineken turbine, here is a pic of my Kamps build on the test stand. Jeff
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Post by racket on Oct 27, 2016 3:39:11 GMT -5
Hi Jeff
Sweet :-)
Cheers John
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Post by jetjeff on Oct 28, 2016 16:00:32 GMT -5
Hi Ralph,
Nice Schreckling build. Did you build that? Very nice job on the build!
Regards
Jeff
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ripp
Veteran Member
I'm sorry, I don't speak english, so I torment you (and myself) with a translation program,Sorry
Joined: January 2013
Posts: 231
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Post by ripp on Oct 30, 2016 15:14:56 GMT -5
Hi Jeff,
Yes, I built the turbine myself. Some parts I have bought.
Your Kamps turbine, it has another compressor wheel?
Cheers Ralph
translate.google.at
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Post by jetjeff on Oct 30, 2016 16:32:58 GMT -5
Hi Ralph, No, the Kamps engine has a turbocharger wheel from a Ford Powerstroke 7.3 liter diesel. It is 3.15" in diameter, turns counter clock wise. Here is a pic of my progress so far on the replacement compressor for my Heineken build. Far from being done, at least I put a dent in it. I was able to do some creative machining using my rotary turntable and my Bridgeport. Regards Jeff
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Chuks
Senior Member
Joined: August 2015
Posts: 498
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Post by Chuks on Oct 30, 2016 18:13:03 GMT -5
how the hell did you make that??? I would have been paying you a learning visit if not for distance......
amazing mate.
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Post by jetjeff on Oct 30, 2016 23:02:54 GMT -5
Hi Chuksy,
Thanks. The compressor blades have a radius of 2.25", so after I centered the rotary turntable, I offset it 2.125". Getting the end mill (1/4" diameter)to follow the curved scribed lines on the compressor was more trial and error than trigonometry. I should have paid more attention in math class rather than looking at all the pretty girls,,,lol.
Regards
Jeff
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Chuks
Senior Member
Joined: August 2015
Posts: 498
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Post by Chuks on Oct 31, 2016 0:01:37 GMT -5
Hi Chuksy, Thanks. The compressor blades have a radius of 2.25", so after I centered the rotary turntable, I offset it 2.125". Getting the end mill (1/4" diameter)to follow the scribed lines on the compressor was more trial and error than trigonometry. I should have paid more attention in math class rather than looking at all the pretty girls,,,lol. Regards Jeff Hi Jeff, LOL... you are too kind, I always centered my techniques on CAD for intricate machining like this. information stored. watching........
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Post by jetjeff on Nov 1, 2016 4:02:25 GMT -5
Hi All, More progress was made on the compressor. Any suggestions on how thick the blades should be? I was thinking around 3/32". Regards Jeff
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