Bob C
|
| posted on 12/1/04 at 10:28 AM |
|
|
Gas Turbines........
I went to a friend's neighbor's shed to be shown the gas turbine he built yonks ago...
I WANT ONE !!!!!!!
How cool would it be spooling up one of those suckers in the car park!!!
OK my motor will have a yam R1 engine but I see a future project beckoning.....
cheers
Bob C
|
|
|
|
|
theconrodkid
|
| posted on 12/1/04 at 11:35 AM |
|
|
sorts out the nobs that sit on yr tail,usefull for gatso,s as well i spose
who cares who wins
pass the pork pies
|
|
|
DaveFJ
|
| posted on 12/1/04 at 11:53 AM |
|
|
there are several US cars that run gas turbines. they are no good for performance though. just for pulling power. AFAIK they are only fitted to
SUV's out there....
it would be interesting trying to get through the SVA noise test!!!
Dave
"In Support of Help the Heroes" - Always
|
|
|
timf
|
| posted on 12/1/04 at 11:55 AM |
|
|
quote:
Originally posted by protofj
it would be interesting trying to get through the SVA noise test!!!
urm 0.5m from the exhaust for the position of the meter.
nah no problem as no meter and no testers hane either come to that
|
|
|
mackie
|
| posted on 12/1/04 at 12:33 PM |
|
|
There's an american company that build bikes around decommisioned helicopter turbines (they have to be renewed after a certain number of hours,
for obvious reasons). Quite quick apparently
Possibly even more crazy that the 502ci big block V8 Boss Hog bikes.
|
|
|
Simon
|
| posted on 12/1/04 at 12:53 PM |
|
|
Bob,
Have a look at the Gas Turbine Builders Association website:
WWW.GTBA.CO.UK
Stacks of info on outfits that sell everything from plans (Thomas? Kamps and others books) and parts to complete self start almost ready to install
engines (not cheap).
I went to the "Second World Jet Masters" at Wroughton Airfield in about 1997, where I saw and heard the AMT Pegasus Model G/T. What a
noise.
You could of course, build yourself one from a turbo!!
ATB
Simon
|
|
|
locoboy
|
| posted on 12/1/04 at 12:54 PM |
|
|
There is a chap called Nick Man(n) who hill climbs an odd looking car which if i over heard correctly has a gar turbine from a helicopter in it. Its
fast alright and loud on wind up too!
a google search may find something about him, quite an engineer by all accounts.
I saw him prang his gas turbine car at Shelsley in August 2002, maybe a better engineer than driver!
ATB
Locoboy
|
|
|
James
|
| posted on 12/1/04 at 02:45 PM |
|
|
The American TV presenter Jay Leno has a helicopter turbine bike. Geared to do about 400mph or something IIRC.
I heard him say how he was on it in traffic once and was looking in his mirror and saw the bumper of a 4x4 next to him fold in and collapse under the
heat of his exhaust!
James
|
|
|
flyingkiwi
|
| posted on 12/1/04 at 04:21 PM |
|
|
I think volvo looked into gas turbine powered cars, using a smallish turbine to power a generator, which in turn powered an electric motor. It carried
a couple of batteries as well. The turbine switched itself off below 30mph or something like that. Neat idea.
As for helicopter engines, RNAS Culdrose have loads of Gnome engine's loafing about after the Seaking Helicopter was replaced by the shit
Merlin. I think they only cost a couple of grand to buy, its the servicing that kill's (£10,000 or something along those lines) every 500 or so
operating hours.
Or better still buy one of the concord engines, on full burner should see you hooting up the m1 at a fairly brisk pace!
It Runs!!!!! Bring on the SVA!
|
|
|
Simon
|
| posted on 12/1/04 at 05:15 PM |
|
|
Colin,
Nick Mann hillclimbs a (approx) 500bhp turbocharged R V8 Moriis Minor. Severely quick car.
Rover were the first to build g/t powered cars entering Le Mans with one in the 50's
They also turbined a road car similar in shape to the P6, but fwd, and an Aunty Rover (90), which without a roof, and with crossplies managed over
140mpg.
Impractical building turbine cars for the simple reason of spooling times to slow to give instant throttle response (think bllody huge turbo)
ATB
Simon
[Edited on 12/1/04 by Simon]
|
|
|
scutter
|
| posted on 12/1/04 at 10:36 PM |
|
|
Don't do it, the spooling up time as Simon say's takes forever, this of course is a relative thing taking on average anywhere between 6
and 14 seconds to get from idle to 102%rpm.
Plus if you get it wrong then the engine could stall and surge, it's a bit diffrent from stalling your car engine as the engine will do a good
impression of an anti -personnel granade .
Right about the price though secound hand Roll Royce viper engines out of the old jet provost go for around £2500, with 500 hours before the next
overhaul.
All the best Dan. (RAF aircraft engine fitter for the past 14 years)
|
|
|
Simon
|
| posted on 13/1/04 at 01:29 PM |
|
|
Chaps,
Sorry was in a rush last night - here's some links to the Rover Gas Turbine cars.
http://www.csse.monash.edu.au/~lloyd/4/Rover/Gas-Turbines/
http://www.rover.org.nz/pages/jet/jet5.htm
This one looks good from the quick glance I had.
I suppose several small turbines might work (ie very small as in model size)
ATB
Simon
|
|
|
JoelP
|
| posted on 13/1/04 at 01:40 PM |
|
|
i heard that 70hp ones are quite small, like one someone (clarkson?) had on a push bike. useful just to assist in the traffic light grand prix!
whats the difference between a gas turbine and a jet engine?
[Edited on 13/1/04 by JoelP]
|
|
|
David Jenkins
|
| posted on 13/1/04 at 01:47 PM |
|
|
I don't know about 70HP, but the one he had on his scooter was one of the model aircraft ones (yes, they are that powerful!).
A jet engine is a gas turbine, but a gas turbine isn't necessarily a jet engine! A jet engine is a gas turbine that has its exhaust pointing
backwards, to help with the thrust, and doesn't turn anything but its main shaft. A gas turbine is a generic term that includes things like
helicopter engines, where they provide turning force, and the exhaust is just something to get rid of.
BTW: Don't get too excited about using a gas turbine for any day-to-day purpose - when they're not running at their peak rpm and power
output then they're very fuel inefficient.
rgds,
David
|
|
|
mackie
|
| posted on 13/1/04 at 01:56 PM |
|
|
Yeah, they aren't really suitable for anything that doesn't require full power for most of the time. You could however hook one up to a
CVT, but this too would be wasteful.
A shaft driven, turbo derived turbine powered go-kart would be mint though!
You'd probably have to cool and slow the exhaust somehow though, unless you want to singe other track users
|
|
|
scutter
|
| posted on 13/1/04 at 08:36 PM |
|
|
Couldn't have said it better myself David,
Gas turbine though can also be used to provide thrust, through the turbine powering a large ducted fan as in modern jet airliners, with this the
exhaust gases complement the fan by adding around 15-20% of the thrust.
Speaking military wise the Tornado engine is classed as a gas turbine because 50% of the air entering the intake isn't burnt in the combustion
chamber, but is kept for providing air for the reheat system.
All the best Dan.
|
|
|
JoelP
|
| posted on 13/1/04 at 10:00 PM |
|
|
thanks chaps...
|
|
|
Simon
|
| posted on 13/1/04 at 10:43 PM |
|
|
Quick last point point re the Rover 90, I did of course mean 140 mpH, not mpG.
Slight difference!
ATB
Simon
|
|
|
