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Post by racket on Mar 1, 2018 16:17:18 GMT -5
This one probably gives more information , the run was done with the original rear wheel sprocket which gave an unrealistic ~290 kph , hence the slowish acceleration , once I fitted a suitable sprocket with a ~220 kph limit it was much better
It seems so long ago now , she was a very crude "proof of concept" machine , no attempt at streamlining , everything was hanging out everywhere :-)
Cheers
John
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Post by azwood on Mar 1, 2018 20:18:04 GMT -5
This one probably gives more information , the run was done with the original rear wheel sprocket which gave an unrealistic ~290 kph , hence the slowish acceleration , once I fitted a suitable sprocket with a ~220 kph limit it was much better It seems so long ago now , she was a very crude "proof of concept" machine , no attempt at streamlining , everything was hanging out everywhere :-) Cheers John The fact you made it work at all is an achievement in itself most people will comment and say I would have done this or that but most couldn't even build a lawnmower lol |
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Post by azwood on Mar 1, 2018 20:18:57 GMT -5
Any idear how much hp or torque your making
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Post by racket on Mar 1, 2018 21:53:50 GMT -5
Hi Yep , plenty of knockers out there , but not many doers . It made 115 RWH on the dyno ............I'll see if I can find a readout . This is the one for Andrews bike at a mid throttle P2 of only 25 psi postimg.org/image/4g1ghuvct/ you'll notice the torque line should start off at max at stall and go down as rpm increase , generally around a 2:1 increase at stall over peak power............thats why we only need a single ratio gearbox and no clutch , the guy doing the dyno work didn't understand turbines and how you can give the gas producer full throttle whilst stationary My old TV84 bike weighed in at ~280 kgs , the heavy cast iron gearbox ( from a 10 HP electric motor) with only a ~4.8 :1 ratio contributed to the acceleration problems, Andrews bike weighs about as much as a 250 cc bike , but with 150 HP potential as it has the "same" gas producer as Anders 300+kph bike . Cheers John |
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Post by racket on Mar 1, 2018 22:06:32 GMT -5
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Post by azwood on Mar 2, 2018 22:54:55 GMT -5
Hi Yep , plenty of knockers out there , but not many doers . It made 115 RWH on the dyno ............I'll see if I can find a readout . This is the one for Andrews bike at a mid throttle P2 of only 25 psi postimg.org/image/4g1ghuvct/ you'll notice the torque line should start off at max at stall and go down as rpm increase , generally around a 2:1 increase at stall over peak power............thats why we only need a single ratio gearbox and no clutch , the guy doing the dyno work didn't understand turbines and how you can give the gas producer full throttle whilst stationary My old TV84 bike weighed in at ~280 kgs , the heavy cast iron gearbox ( from a 10 HP electric motor) with only a ~4.8 :1 ratio contributed to the acceleration problems, Andrews bike weighs about as much as a 250 cc bike , but with 150 HP potential as it has the "same" gas producer as Anders 300+kph bike . Cheers John That's pretty awsome it's more power than I thought thease would make my street triple i turbod makes 150 but the big thing I noticed was the added torq even at low boost pulling out of corners and low speed throttle ons.i asked anders what reduction he runs it 50/1 |
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Post by azwood on Mar 3, 2018 1:56:10 GMT -5
Anyone have any ideas on how to make an adorable power turbine
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Post by azwood on Mar 3, 2018 2:00:04 GMT -5
Torq converter stator look like an option as long as I find a steel one  |
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Post by racket on Mar 3, 2018 2:41:43 GMT -5
LOL, you get the gas producer working and developed, and there'll be a freepower solution ;-) Lots on ebay www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313.TR0.TRC0.H0.Xturbine+wheel+collector+.TRS0&_nkw=turbine+wheel+collector+&_sacat=0Yeh a freepowered bike has a very FAT power curve , 80% of power at 50% rpm , ideally an automotive torque convertor in the system would make things even better , as theres a minor lack of power during the initial takeoff due to the single speed gearbox , theres plenty of torque but with nil rpm theres no horsepower being delivered , and its horsepower that does the accelerating , once the freepower gets spinning a bit the horsepower starts to climb very quickly until as I said earlier you'll get 80% of your peak horsepower at just 50% of your N2 rpm . You need to develop the gas producer as a pure jet "thrust" engine, then measure your jetpipe total temperature and pressure ,which when taken in conjunction with your jet nozzle sizing and thrust will allow you to design a suitable freepower stage ................you'll probably be needing a 3rd stage Allison C20 wheel like I used for my TV84 bike , rpm ~30,000 ..............I think the 2nd stage would be a tad "tight", but maybe not , it'll all depend on the gas producer development and its "energy" output. As our freepower Allison wheels can be spun to ~30,000 rpm we need a gearbox with an ~6:1 ratio , this then gives us a "normal" 5,000 rpm output sprocket shaft that can be matched up with a normal bike chain drive. Cheers John |
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Post by azwood on Mar 3, 2018 3:23:40 GMT -5
Thanks heaps John great info as always I tried eBay I just wasent searching the wright words
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Post by racket on Mar 3, 2018 4:50:48 GMT -5
Yeh , theres stuff out there , but its too early to be concerned about the freepower wheel/stage , gotta get the gas producer built and sorted first so you then know what to source for the freepower.
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Post by racket on Mar 3, 2018 16:51:59 GMT -5
I should mention that a bike is the hardest "vehicle" to fit a turbine engine into , the fact that we have to be able to sit on it with the engine between our knees severely restricts how things can be arranged, those large diameter bits of plumbing get awkward to fit . My advice , (for what its worth) go for a long/large cruiser style machine , a turbine engine is the perfect cruiser engine , no clutch , no gears , just twist the throttle for uninterrupted acceleration from standstill to top speed , its an "interesting" sensation :-) Andrews short wheelbase sports bike jetandturbineowners.proboards.com/thread/34/motorcycle-project has given no end of difficulties , its just too tight a fit . LOL..............my 12/118 engine would make a great 0-300 kph cruiser engine ,........... if I can ever get it to run, my personal "Cruise Missile" :-) Cheers John |
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Post by azwood on Mar 3, 2018 17:23:54 GMT -5
I should mention that a bike is the hardest "vehicle" to fit a turbine engine into , the fact that we have to be able to sit on it with the engine between our knees severely restricts how things can be arranged, those large diameter bits of plumbing get awkward to fit . My advice , (for what its worth) go for a long/large cruiser style machine , a turbine engine is the perfect cruiser engine , no clutch , no gears , just twist the throttle for uninterrupted acceleration from standstill to top speed , its an "interesting" sensation :-) Andrews short wheelbase sports bike jetandturbineowners.proboards.com/thread/34/motorcycle-project has given no end of difficulties , its just too tight a fit . LOL..............my 12/118 engine would make a great 0-300 kph cruiser engine ,........... if I can ever get it to run :-) Cheers John Lol yeah I know the problem well from turbochareing bike space is always the issue I agree with the cruiser idear a mate just offered me a free sit down jet ski with a blown engine that could be a good thing to put it in would that make it a jet jet ski haha |
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Post by azwood on Mar 3, 2018 17:29:07 GMT -5
Getting the parts together slowly  |
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Post by smithy1 on Mar 4, 2018 18:14:13 GMT -5
If and when you do get the engine running, I have a C20B 3rd and 4th wheel floating around..!!
Smithy.
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