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HomeTurbineAircraftHelicopterTurbine Helicopters › Turbine PHT3
08-08-2009 08:01 AM  8 years agoPost 161
PETER ROB

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Devon UK

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Edited post's
OH Dear, OH Dear, when it comes to people writing post's with very little content, 3 names come to mind, MattJen, Dazzaster and C James
EDITED post's, as a matter of fact, I check all my post's after I have written them then posted on the forum, to see if there are mistakes, normally spelling, this is normally done within seconds, not as an after thought to make myself look right, if I had done that then Matt Jenner would have dropped on me like a ton of bricks as he saves every post,
Peter R

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08-08-2009 08:06 AM  8 years agoPost 162
PETER ROB

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Devon UK

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WHAT GOES UP MUST SURELY COME DOWN.
Dave, You are spot on, I may get," hoisted with my own Petard", but that is something I will have to live with
Peter R

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08-08-2009 10:42 PM  8 years agoPost 163
classic

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All over the place!

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peter, you made a totally wrong claim, then you got called out on it,

yet you still refused to admit you were wrong, then you edited your post so you could later deny you ever made the claim.

Very lame on your part, since your usally the one to throw that accusation at Matt, but sadly still also very characteristic of you.

Edit:
Point is made, and people understand who you really are peter.
Trying to communicate with you is like talking to a 4 year old. You have no ability to articulate your point and you argue in cicles without any ability to reason. I am done with you.

Which is worse, ignorance or apathy? I don't know and I don't care!

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08-09-2009 05:56 AM  8 years agoPost 164
PETER ROB

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Devon UK

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Drive couplings in LARGE Heli's
Sonny Jim, Do you have any thing to say about the topic?
Get a PM to your friends, they will maybe give you some information, to use, as you clearly are out of your depth with anything that can't be fitted into a shoebox
It is very easy to make an accusation, where is your proof to back it up, or did Matt not save my post's as he said he always does
Samll minds for small people
Will not be able to continue more today, I am off to yet another fly in
Peter R

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08-21-2009 05:16 PM  8 years agoPost 165
birdeye

rrApprentice

Bratislava, Slowak Republik- Europe

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Finisched transport truck for Turbíne CamCopter

http://picasaweb.google.sk/daubner...._2009_pooprave#

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08-22-2009 06:21 AM  8 years agoPost 166
seattle_helo

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Seattle, WA USA

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That's a cool little transport!

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09-07-2009 04:44 PM  8 years agoPost 167
Bell Bloke

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UK

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Breaking News. Len Mounts Beautiful Scout tragically crashed this weekend. 3 years work and alot of money gone.
I'm reliably told that the flex drive to the tail failed.
Just thought I'd keep you folks informed, because if you cast your minds back earlier in this thread, grave concerns were expressed about the reliability of flex drives especially in large helis.
It's doubtful that Lens Scout clocked up that many hours, since it was a show heli.

I only bring this up because, it's something we can learn from...hopefully.

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09-07-2009 07:02 PM  8 years agoPost 168
Héli Suisse

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Geneva Switzerland

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BB: I'm very sorry to read from you that accident. Truely a pity indeed. The putative cause for that accident (i.e. the flex drive) will just fuel some support for Peter Wales disguss for this kind of tail transmission. I can't but concur with Peter reasons for not appreciating the flex. But I like broccoli

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09-07-2009 08:09 PM  8 years agoPost 169
Bell Bloke

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UK

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Flex drives are ok for small stuff, basically because when it crashes it doesn't really matter.
Such a shame to loose such a classic.

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09-07-2009 08:32 PM  8 years agoPost 170
seattle_helo

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Seattle, WA USA

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Wow. That is a true shame.

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09-07-2009 08:53 PM  8 years agoPost 171
PETER ROB

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Devon UK

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FRom what I heard it sounded like Flexi failure
But then I was not there,nor did I see the crash,
There are a lot of components in a tail drive system, any one of them could have failed,
Also Len has been useing flexidrives for longer than I care to remember
I think I will wait, before jumping to any conclusions
On a final note I have blown 2 flexidrive systems in the last month,and got the videos and photo's, still will not stop me useing them if I think they are correct
Peter R

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09-07-2009 09:23 PM  8 years agoPost 172
Peter Wales

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Orlando Fl

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Sylvain, you cannot like broccoli and not like flexy drives its against the laws of nature

I have to agree, that's a major loss. The model was a flying museum quality machine and frankly I am glad I was not competing against him or it. I expect a lot of competitors will be secretly glad it's gone...... until he shows up with something even better next year.

You cant put a good man down

And Peter, using flexy drives is never correct. If it was they'd use them in full size helis

Peter Wales
http://scalehelicopters.org

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09-07-2009 10:00 PM  8 years agoPost 173
PETER ROB

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Devon UK

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they'd use them in full size helis:
Peter W,I have it on good authority that flexi drives were used to wind up the rotor on Autogyro's
Not wanting to start an argument, I still feel there is a place for them in modeling, but I have to admit to 2 recent failures in the wrong installation
Peter R

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09-07-2009 10:09 PM  8 years agoPost 174
modtron

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Oxford. UK

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Just to end this before it gets any deeper - so far the wreakage has not shown itself to be caused by any flexi drive failure !

It is still unsure as to wether it was a simple coupling problem or even the tail gearbox itself.

As it is still being stripped down, only time will tell.

modtron
Oxford UK

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09-07-2009 10:24 PM  8 years agoPost 175
Bell Bloke

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UK

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Bloody Hell, Len Mount said it was the flexi drive, maybe he's changed his mind now. Oh well we shall see sometime soon no doubt.
Thanks for the heads up Modtron.

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09-07-2009 11:03 PM  8 years agoPost 176
Bell Bloke

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UK

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Peter, Will and I went over to Ken Wallis' house, that's Ken Wallis from You Only Live Twice, Little Nelli auto giro fame and much more.
I think he invented that flex drive system on the auto giro, he said that he came up with it to save him charging up and down the runway trying to get the rotors going. He can also do jump take offs with it. It is actually disengaged on the ground and is only a divice for spinning up the rotors, ie it's not used 'in flight' and so is not a critical component, just more of a convenience.

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09-07-2009 11:19 PM  8 years agoPost 177
payne1967

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uk

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i'm watching this space with interest as i've just had an intermidiate gearbox failure on a wire driven tail on a longbow apatche using a custom ali 90* box with graupner gears, a 4 blade tail replaced the 2 blade and after 2 flights the tail failed
i don't know if the problem had already started with the 2 blade on it
but the output gear has no teeth left on it and about 6 teeth are missing on the input gear
although i'm unsure of the condition of the gears to start with as the box was already built inside a part built heli
and the spare gears that came with it are very secondhand (put in a pc forum way)
i was thinking of putting a flex drive into it but to start with i'm rebuilding the box with new gears

and the damage to the heli
1 chipped main blade

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09-08-2009 07:45 AM  8 years agoPost 178
WIRLYBIRD

rrVeteran

CAPE TOWN / SOUTH AFRICA.

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Payne1967 , what are the 90 degree gears made of , are they the metal spur gears?
Dave.

WHAT GOES UP MUST SURELY COME DOWN.

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09-08-2009 12:22 PM  8 years agoPost 179
wingtip

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Indiana

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interesting... we have 5 plus years on our flex cable driven tails (30+lb birds) and never had a flex cable failure ever. With tons of flight time... look how many flights we did just at ircha...
we have stripped some tail gears or a crown gear doing rolls but this was for testing purposes, most guys arent gonna roll their piece of artwork lol... and since we were able to strip them we have made an optional brass gear set for the crown gear and the tail gears and would be way more than adequate for just normal flying but up to rolls etc for those who arent faint at heart....

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09-08-2009 01:14 PM  8 years agoPost 180
PETER ROB

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Devon UK

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Len Mount said it was the flexi drive
From someone who flew with us at the Nationals, and was stood next to Len at the preliminary investigation,
Len, pulled a 2inch metal disc from the wreakage, and said
"the clutch has gone"
ie it's not used 'in flight' I think most of us are aware of how an Autogyro gets it's lift, the statement was used to counter another statement that flexi-drives were not used in full size
Peter R

wingtip, Like you I have over 5 years, with a flexi-drive,in a 20Kilo turbine JetRanger, the turbine is back from service, so will have a good check and probabley change it for a new one
Peter R

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