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Author Topic: INFO ON MODEL STEAM TURBINES REQD  (Read 4988 times)

Klunk

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INFO ON MODEL STEAM TURBINES REQD
« on: July 18, 2010, 03:11:15 pm »

Anyone got any info on the above???
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dreadnought72

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Re: INFO ON MODEL STEAM TURBINES REQD
« Reply #1 on: July 18, 2010, 03:42:25 pm »

Saito used to make one - but I believe, like model jet engines, there were bearing problems at multi-tens-of-thousand revs. Meanwhile, all model turbines (which seem to be single-stage and use an impellor and therefore slurp kinetic energy, rather than blades and gas pressure) are steam-hungry.

I'm not sure why there's been little, if any, interest in Tesla turbines for models. (You get rotation from a steam jet without the need for difficult-to-make balanced turbine blades. The axis of a Tesla turbine would emit low pressure steam/water, and might offer some of the benefits of a condenser without (umm) having a condenser.

All these small-size turbines would need gearing - quite drastic gearing in many cases - to reach normal model propellor revs.

A raft of problems.  %%

I wonder if there's a preference to seeing cylinders and pistons "doing their thing" in the live-steam world, rather than plugging in some covered turbine and getting little more than a rotating shaft and a whine out of it?  %)

Andy
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gondolier88

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Re: INFO ON MODEL STEAM TURBINES REQD
« Reply #2 on: July 18, 2010, 03:56:42 pm »

Hi Klunk,

There is a raft of info on Tesla turbines out there- may we ask why?

Greg
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dreadnought72

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Re: INFO ON MODEL STEAM TURBINES REQD
« Reply #3 on: July 18, 2010, 04:02:27 pm »

Tesla turbines work in reverse, too: might be a great way to make a bow thruster. You'd have a pipe in the bottom of the boat to feed water into the axis, then spin it up either way to force water out port or starboard.

Just a thought.

Andy
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tony52

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Re: INFO ON MODEL STEAM TURBINES REQD
« Reply #4 on: July 18, 2010, 04:05:21 pm »

Commercially available r/c unit available from French company JC-Steam. Note: the website states 'Closed until March' but which March? March 2009 or 2010? Reminds me of when that annoying sign is seen in a shop 'Back in 5mins'. Why do they not stae when thy will reopen e.g. back at at 2:30pm.

http://jc-steam.com/estore/product_info.php?products_id=401

Tony
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Klunk

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Re: INFO ON MODEL STEAM TURBINES REQD
« Reply #5 on: July 18, 2010, 05:10:11 pm »

some one in the club was asking about them and was interested if one had been made!
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SteamboatPhil

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Re: INFO ON MODEL STEAM TURBINES REQD
« Reply #6 on: July 18, 2010, 10:46:32 pm »

Loads of info Klunk, what do you need.
There are several being made at the moment, including one in a flash steam hydroplane.    :-))
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Klunk

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Re: INFO ON MODEL STEAM TURBINES REQD
« Reply #7 on: July 19, 2010, 07:52:45 pm »

I knew this would drag you out of the woodwork Phil!!! Will get the relevant club member to my house so he can research it, he has no computer!!!
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