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Old 22nd May 2012, 02:25   #261 (permalink)
 
Join Date: May 2012
Location: Beverly Hills, CA USA
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Collective mounted Hook release

Sorry but no pix.
It's exactly the same as the popout release.
But be careful. I was supervising a new 133 operator and he pulled the hook release with the load "SPLAT" at about 100ft.
I always pulled the circuit breaker until I was actually pulling torque.

But definitely beats the collective mounted "bicycle brake" model. What a joke. I know of some crashes because it takes 2 hands to pull the thing.
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Old 24th May 2012, 12:46   #262 (permalink)
 
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500

Nigelh,

is your 500 UK registered or Nreg ? & what French 'thingy' are we comparing it to ?
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Old 11th Jun 2012, 18:10   #263 (permalink)
 
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Can anyone tell me the difference between the C with a C18 or a C20. There are a few for sale in the UK at the moment with the C18's
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Old 11th Jun 2012, 19:18   #264 (permalink)
 
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As I understand it, the only difference between the two is, literally, the engine. A 500C/C-18 and a 500C/C-20 will have the same main transmission so the benefits of the more powerful engine are only felt in hot-and-high conditions.

500 Fan.
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Old 11th Jun 2012, 20:39   #265 (permalink)
 
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The C18 is 317hp as to 420hp for the C20 so I would imagine you would overtorque the C20 that fast.
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Old 11th Jun 2012, 21:47   #266 (permalink)
 
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Yep HillerBee you will over temp the -18 before you over torque it - esp at altitude.
And for my money, if I could afford to have a private machine it would be definitely a Hughes/MD model parked in my toy shed. Depending on how much many spare slides I had as to whether it would be a C, D, E model - an F model would be the ultimate.What a beast - power to weight ratio. Screw the Notars - too gay.

Last edited by Semi Rigid; 11th Jun 2012 at 21:53.
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Old 11th Jun 2012, 22:28   #267 (permalink)
 
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You could overtorque it, Just like you could overtorque anyhting if you pull the collective up in to your arm pit. I've never flown a C-18 but I imagine you'd overtemp it quite easily on hot or days or at any reasonable altitude.

I imagine you would have trouble getting parts for the C-18 too.
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Old 11th Jun 2012, 23:46   #268 (permalink)
 
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The C20B has 420 HP, the C18 has 317 HP. Makes quite a lot of difference.

Whoops, didn't see the same comment above!!

Last edited by Nigel Osborn; 11th Jun 2012 at 23:49.
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Old 12th Jun 2012, 08:50   #269 (permalink)
 
Join Date: Nov 2003
Location: Tasmania and High Wollemi
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book figures

If I read the flight manual HE/HS correctly @20C

2550 lbs mtow short skids

Hover ceiling c18 4200ft
c20 8500ft

Various decrements for scavenge air, blade tape, electrics etc.
Fuel is 431 lbs usable/435 onboard standard tanks.

Ask 500 driver for an OEW


I do stand to be corrected....

Last edited by catseye; 12th Jun 2012 at 09:00.
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Old 12th Jun 2012, 10:23   #270 (permalink)
 
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Does not require alt to over temp C18, good summer in UK at sea level full fuel & 3 UK pax & you will be watching TOT like a hawk on lift off, but it does go further on a lb of fuel

Last edited by 500e; 12th Jun 2012 at 10:25.
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Old 12th Jun 2012, 11:41   #271 (permalink)
 
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The biggest difference is the engine support. Rolls Royce do not support or manufacture C18 parts any longer and there are numerous parts that you cannot get for love or money. If the engine needs repairing, you had better look for a replacement. Make sure you buy a C20B powered aircraft or get the right price for a C18 powered one.
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Old 12th Jun 2012, 21:14   #272 (permalink)
 
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Some time back there was a number of ex mil surpuls c-18s on the market so someone somewhere is probably sitting on a mountain of them.
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Old 13th Jun 2012, 14:37   #273 (permalink)
 
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I had a hangar full of C18 engines ......sat around for years and nobody wanted them .....they have all gone to the States now prob to go into boats .
My French thingy was a 480B ......great little machine ...v simple to fly with no vices and a perfect spot for my dog in the footwell !! Have since sold that and also sold the 500 but looking for another one if anyone knows of one for sale at the right money ..???
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Old 13th Jun 2012, 15:45   #274 (permalink)
 
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I know EliAlpi have a 2,600 hr Italian-built (Breda Nardi) 500 on offer and there are a good handful of other examples in the usual places.

Unbeatable as a personal transport over short distances with just a couple of people on board. I think the 500 is perhaps the maximum 'fun' you can have in a light single (have yet to fly the Gaz).

Good hunting!
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Old 19th Jul 2012, 21:50   #275 (permalink)
 
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Nigel
Is there some reason. You call your 480 a French thingy


Steve
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Old 23rd Aug 2012, 16:12   #276 (permalink)
 
Join Date: Jun 2011
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N2 speed avoid range - MD 500

Hi,
Please forgive the stupid question, but could someone please tell me why steady state operations between, for example, 75% and 88% N2 are time limited?

f0xhunter
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Old 23rd Aug 2012, 16:56   #277 (permalink)
 
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It is to prevent resonance that will damage the turbine wheel. It is only applicable to certain third stage wheels which will eventually have to be removed from service. Transients through the range are permitted but steady state operation in that range above 85 shp are restricted to 60 seconds. See RR CEB A 1400, it explains the replacement requirements.

Last edited by Gemini Twin; 23rd Aug 2012 at 16:57.
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Old 24th Aug 2012, 01:07   #278 (permalink)
 
Join Date: Jun 2011
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Thank you Gemini,
That was very helpful as was the link to the CEB. So the turbine manufacturer has established a limit that pretty much no oldish helicopter has the means to monitor compliance of? It does make purchasing helicopters a little tricky since a normal survey will not give us much insight into previous compliance.
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Old 24th Aug 2012, 03:06   #279 (permalink)
 
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I'm hearing persistant rumours of problems with (new) main rotor blades. Anyone care to elaborate?
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Old 24th Aug 2012, 06:34   #280 (permalink)
 
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Shawn is that HTC blades or the new van Horn composite blades ?
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