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Post by Richard OConnell on Apr 3, 2013 9:37:24 GMT -5
Hi Alex, and welcome to the group!
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Post by finiteparts on Apr 18, 2013 20:43:22 GMT -5
Hello everyone!
My name is Chris and I am a turbo-holic…hehee! This is a help group right?
It is so good to see so many others that share a similar interest. Gas turbine engines are my passion and I have been lucky enough to turn that interest into a career. I have BS and MS degrees in mechanical engineering and for the past 6.5 years I have been designing advanced low emission combustion systems for large power generation gas turbine engines. I hope that I can use my technical background to help everyone achieve a greater understanding of the design and operation of small gas turbines. I will have to be careful to make sure that none of the information I share could be construed as being gained from my work, so often, I will have to reference where the information can be found publicly.
I have quite a collection of gas turbine parts (fuel injectors, combustors, turbine wheels, etc.) and have built several turbocharger based gas turbines. In fact, my senior design project for my Bachelor’s degree was the design and building of a combustor for a Holset H1E based turbine. I based my design on the work presented in Arthur Lefebvres’ “Gas Turbine Combustion” book…I highly recommend it if you want a technical design resource (but try to get the earlier editions).
My engine collection includes several Fairchild J-44’s, T700-GE-401c, the core section of a TF34-GE-400B, a Walter M701, Plessey Dynamics Solent GTS, Garrett GTCP-85-195 apu and various r/c jet engines. My current home projects and areas of interest are mostly focused around ultralight aircraft. My graduate project was going to be a study on the potential use of a small turboprop engine for ultralight aircraft…the rationale was that though the fuel consumption would be higher than a typical two-stroke engine, the power density (power per engine weight) might offset this. Unfortunately, my advisor took a new job the semester before I was to start this research, so I had to change my advisor and research to cover the use of tunable diode laser spectroscopy to inspect for chemical species that indicate the leading edge of the flame front.
My engine design is currently progressing through the rotor dynamics required to use hybrid ceramic angular contact bearings. I am going with the tried and true squirrel cage and squeeze film damper to get the rotor response under control if the rotor goes near its critical speeds…I will share more when I get good confidence that it will be successful, because I’m sure that everyone on here hates having the high pressure pumps needed to float the journal style bearings as much as me!
Well I look forward to talking to everyone!
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Post by racket on Apr 19, 2013 0:41:26 GMT -5
Hi Chris Welcome to the Group . Lefebvre knows his combustors , I used a Paper by him and Norster to design the combustor for my first turbine bike www.youtube.com/watch?v=CplnY9TG7NEwww.youtube.com/watch?v=q_MRUxWEOZ0LOL........I'm not sure I hate my "brass bush" journal oil pump , after experimenting with ball bearings the heavy duty oil pump was an easier proposition than replacing rotatives whilst trying to get the balls sorted . Even the turbo manufacturers have "problems" getting their ball bearing turbos to be reliable , all the heavy duty diesel turbos run "brass" I'll be looking forward to hearing more about your bearing experiments :-) Cheers John |
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Post by Richard OConnell on Apr 19, 2013 13:00:27 GMT -5
Hi Chris and welcome to the group! A lot of our members are experienced builders, but we get a lot of questions and try to help provide information whenever possible. I too am interested in learning more about your experiments  |
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Post by finiteparts on Apr 21, 2013 13:52:38 GMT -5
Hi Richard and John! Glad to be here! I have some old videos on Youtube: www.youtube.com/watch?v=Ucfx27ak0FEFrom that one, you can click on the link to my other videos beside my name. I should try to get some more up there...hummm... I too am looking forward to getting the interaction with you guys, hearing about your experience and hopefully sharing some great stuff. I continued the bearing conversation over a a new post... |
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Post by kitlindsay on Apr 25, 2013 21:48:30 GMT -5
Hello everyone! My name is Kit and I live in Missouri, about 50 miles east of Kansas City. I purchased a Tiernay TT10-1 from Marshall, a member of this forum. I built a nice test stand for it and love to fire it up and listen to it make noise. I found the forum during a search for any information on the steady oil pressure that this engine is supposed to carry at speed. I look forward to interacting with the group and helping when I can. By the way, I still don't know what the oil pressure spec is! I know the min for the low oil pressure sensor is 5 psi.
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Post by pabloottawa on May 19, 2013 10:57:14 GMT -5
Hello everyone, my name is Pablo, I am 39 years old and live near Ottawa, Canada. My background is mostly in computers but I also like electronics, mechanics, and jet engines of course. I recently bought a RR Nimbus MK105 and put it to work - here's the link: www.youtube.com/watch?v=V5zgC8RjHiU&feature=youtu.beI will be reaching out to the forum members for help and assistance, as my turbine seems to need an overhaul (oil leaks everywhere). And I will be more than happy to contribute with information / learned lessons on my own. Cheers, Pablo |
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Post by ernie wrenn on May 19, 2013 15:30:02 GMT -5
Welcome everybody.. Great to have you here. Chris can give you a pile on info on the Nimbus
ernie
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moonpool
Member
Joined: June 2013
Posts: 28 
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Post by moonpool on Jun 28, 2013 15:20:02 GMT -5
Hello JATO members,
My name is Rob and I'm from the netherlands.
After my second turbine project I'am planning to buy 2 isotov GTD-350 engines.
Are there any spec. does & don't when buying these russian engines??
I've got a RR viper 202 (nearly running) and VEB GT028-2 engine myself.
When anybody needs information..just ask, got loads documentaion, info and
experience disassambeling them.
regards
Rob
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Post by Richard OConnell on Jun 30, 2013 21:20:44 GMT -5
Hi moonpool, great to have you! I know ernie has some experience with the vipers, but I'm not sure who to talk to oon the isotovs.
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moonpool
Member
Joined: June 2013
Posts: 28
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Post by moonpool on Jul 1, 2013 7:40:51 GMT -5
Great to be part of the forum, i'll find my way..
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ozbooster
Member
Joined: October 2013
Posts: 28
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Post by ozbooster on Oct 8, 2013 6:55:05 GMT -5
Hi All
I'm Greg , from Victoria Australia,
I see a few guys i know from landspeed forums here,
First turbine i brought was a Mamba , but it was short so many accessories and so difficult to find at the tme i sold it to a collector and brought a better suited unit
Currently have a RR Nimbus and intend one day to have it in a streamliner on the salt
not that i have done much with it yet, brought without wiring and igniter ,but think i have that sussed now ,
have managed to spin on starter and happy enough with how that went, no funny noises or letting the smoke out of the electrics.
But caught up with other projects , running 2 LSR bikes both here and in the USA takes up way more time than i initially thought
Next step is building a bike liner with the bike motors next and learning more about the hydraulic drive i want to run , also getting the body designed and tested
Quite drooling when i look at Toselands liner with the RR Gem
Hoping to learn a bit more about the basics before i delve too deeply
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Post by ernie wrenn on Oct 8, 2013 10:51:45 GMT -5
Welcome Aboard .. Ozbooster
We you get a chance, give us a run up on your LSR bikes..
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Post by racket on Oct 8, 2013 16:31:50 GMT -5
G'day Greg
Nice to see another Aussie on here :-)
Yes, more info on the bikes please .
Cheers
John
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ozbooster
Member
Joined: October 2013
Posts: 28
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Post by ozbooster on Oct 8, 2013 16:53:42 GMT -5
well there turbines, just have pistons inturrupting between the compressor and power sections  Small bike is a 99 gsxr 750 , fair bit of work done to the motor , runs a garrett gt2871, up to 32 psi making between 350 and 400hp ice water/air intercooler, fully faired, best speed ridden by teammate Kim of 238mph in the flying mile and 239 in the km at the Cook Shootout last yr and current record holder at SCTA, AMA, FIM, and DLRA events Big bike is a 2003 hayabusa or gsx1300r, bored and stroked to 1407cc for a specific capacity class , runs a gt35r to 28 psi , over 500hp, same sort of ice tank intercooler system, fuly faired , best speed of 257mph in the mile and 258 in the km again at last yrs Cook Shootout current record holder FIM and DLRA and fastest SCTA bike record planned streamliner will run 2 of the 750 motors (i already have them ) running to a B&J transmission as a range change gearbox , chain drive to rear and hydraulic drive to front testing the hydraulic drive as i think thats how i will use the Nimbus in the next build as all hydraulic drive, so i can run the turbine up to speed and have more immediate ground drive control with the hydraulics and make better use of the load control in the gearbox if i can do similar to Ian (Gidge) but keep the load sensing section |
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