UK source for s/h turbine helicopter transmission??

[anonymous-user]

I'm looking at re-purposing the high speed step down gear train from a turbine helicopter to build an electric motor test rig! (Long story ;-)

I need roughly a 25krpm input speed capability, and a 2 or 3 times reduction in output speed, and i need to be able to put 300kW or more, through it continuously. It stuck me that a turbine helicopter does pretty much this (and more) to drive it's main rotor from the power turbine. Hence, i wonder, is there a source of s/h, or non flight rated (hrs expired etc) transmission parts? The quotes i've had to engineer such a transmission from scratch are eye watering.....

[Geneve]

Talk to Elfan ap Rees at the Helicopter Museum in Weston. He's a wealth of knowledge and should be able to advise you on the best options http://www.helicoptermuseum.co.uk/contact.htm

Alternatively, post the question here on the Rotorhead Forum http://www.pprune.org/rotorheads-23/

[Equus]

Might also be worth speaking to Everett Aero

[AER]

I'm curious where you're going to get 300kW worth of electricity from...

[wolfracesonic]

AER said:

I'm curious where you're going to get 300kW worth of electricity from...

The lamp post outside his house.

[essayer]

O/P username is particularly relevant

[Super Slo Mo]

I have a contact who is the operations type manager of a helicopter/aviation company. Might be able to help. Might not but it's worth a shout.
PM me if you want me to send over his contact details.

[anonymous-user]

AER said:

I'm curious where you're going to get 300kW worth of electricity from...

Luckily i don't need 300kW of 'lecy (although that is easily available at my clients facility, because they have a 120KV sub station immediately outside!) but the transmission does need to be able to cope with that power level. I only need around 50kW, because the system is in a loop, with one motor driving and one absorbing, so the input power is only that required to offset the system losses.

[dvs_dave]

Presumably you're building it for automotive electric powertrain testing?

So who's asking you to prototype a 300kW electric power plant? Sounds interesting...

[chuntington101]

Max_Torque said:

AER said:

I'm curious where you're going to get 300kW worth of electricity from...

Luckily i don't need 300kW of 'lecy (although that is easily available at my clients facility, because they have a 120KV sub station immediately outside!) but the transmission does need to be able to cope with that power level. I only need around 50kW, because the system is in a loop, with one motor driving and one absorbing, so the input power is only that required to offset the system losses.

What? And here was me hoping your BMW project had just got VERY interesting!

[dudleybloke]

Anything on eBay?

[JoeBolt]

dudleybloke said:

Anything on eBay?

Yes, a Rolls Royce Gem: -

http://www.ebay.co.uk/itm/ROLLS-ROYCE-GEM-LYNX-HEL...

It's the only helicopter engine I searched for as I'm biased towards Gem, having worked on the Lynx for a few years. £6000 seems a lot but here's one that might have sold for £750 back in July: -

www.bidspotter.co.uk/en-gb/auction-catalogues/with...

I wonder if it's the same one?

The output gearbox housed within the intake has a reduction ratio of 4.38/1.

[blue van]

http://www.davidbrown.com/

any help

[loafer123]

You could ask Gama Aviation at Farnborough, who service and fix them.