Feb 09, 2013, 07:39 AM
Mike's Ma Maaaaaaaaan
Originally Posted by Tom Wright View Post
Hi Paul.

Just to confirm that you are using a metal geared servo ?
The blade tip deflection is 80 mm up and 80 mm down.

Hi Tom, tnx for the answer.

Yes, Corona 929 MG which I used to fly in my 450 sized Hely, reasonable speed, strength and centring so I am quite confident that they are up to the job.

Thanks again,

Paul Bray.
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Feb 09, 2013, 04:35 PM
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thechannelmast's Avatar


ill just build some .i like building the blades i was having a lazy moment
Feb 09, 2013, 08:45 PM
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Tom Wright's Avatar

Hey guys how do I get a embeded u-tube video to apear ?

Last edited by Tom Wright; Feb 10, 2013 at 11:38 AM.
Feb 10, 2013, 12:45 AM
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Jockadopolus's Avatar
Sorry wrong thread
Last edited by Jockadopolus; Feb 10, 2013 at 12:48 AM. Reason: Wrong thread
Feb 10, 2013, 11:17 AM
Flying one day at a time....
pardshaw's Avatar
Hi Tom

Just watched your video again and noticed that Peter's Crane Fly appears to be significantly faster than yours. Is this because his is heavier built? Or is he just hammering it more? Personally, lighter would seem to me to be a better (slower) option for a novice.

Also, after searching the net, it seems clear that Crane Fly is pretty unique in having stabiliser surfaces beyond (outside of) the rotor disc "footprint" which must make it intrinsically less pitch sensitive and easier for a novice to get to grips with.

just a thought - any comments welcome!

Feb 10, 2013, 11:37 AM
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Tom Wright's Avatar
Hi Dave.
Pete's model is prop-ed to give more power , and he can be a bit of an old hooligan at times lol.
The long moment arm gives good damping in pitch , so once in trim the model is easy in pitch but with the HK -C30 blades very slow flight requires balancing throttle and elevator ,in the same way as you would with fixed wing .

Feb 10, 2013, 03:15 PM
Mike's Ma Maaaaaaaaan

Decent Weather??

Nearly done, just the aileron linkage and she is ready to rock and roll (after I had to chop an inch off of the LE of the fin, teach me to make the blades a bit longer ).

So Tom, having put so much effort into producing a really nice build, can you now arrange for some nice weather here in central Germany around Lunch Time on Tuesday or Wednesday for my maiden please??


Feb 10, 2013, 03:18 PM
Mike's Ma Maaaaaaaaan
PS, after fiddling around I established that if using 10 mm servo arms the ball centres need to be 31 mm out from the edge of the head block to give + / - 80 mm throw.
Feb 10, 2013, 04:10 PM
Flying one day at a time....
pardshaw's Avatar
Good luck on your maiden, Paul!

Feb 10, 2013, 08:37 PM
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Tom Wright's Avatar
Paul 60 MM ball to ball sounds reasonable .As for the weather no can do lol we have high winds and snow again! here .
Feb 11, 2013, 06:48 AM
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It doesn't sound like you tried to do anything about the weather. Our storm started Friday and lasted about 30 hours dumping 36 inches. We have an icy mix at the moment which is supposed to change to all rain later on. They are predicting snow for mid week and more yet for the weekend. My big snow blower went through 2 belts so far and I have no spares left. The small snow blower can't blow it above the snow banks. We are still waiting for you to get started shift the weather around to an extended tropical system

Al M
Last edited by Al M; Feb 11, 2013 at 06:54 AM.
Feb 11, 2013, 07:22 AM
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Tom Wright's Avatar
We have seen the results of your storms on TV and must say our weather situation is minor by comparison.But it still make flying difficult , due to the wind and old age lol.
Might be worth having a word with Rich as he has been known to move heaven and earth.
It's a shame there's no flyable air on the moon as moving to another world is becoming a interesting prospect.
Keep Warm .
Feb 12, 2013, 02:59 AM
Flying one day at a time....
pardshaw's Avatar
Just a quick one to keep in touch.

Its the last day of our holiday (winter break, looking for some sunshine ) and we fly back to the UK this lunchtime. So, I'll be able to check out my parts-bin tomorrow and start buying in other stuff later this week.

Would anyone find it useful/interesting if I posted progress/pictures of my Crane Fly build? It will be a leisurely project, not a rapid one!

Feb 12, 2013, 07:08 AM
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Tom Wright's Avatar
Most certainly Dave , photos are always welcome.

Feb 12, 2013, 07:41 AM
Registered User
Having in stock some blades , do you think I can use them with the Crane fly
What I have is 50mm width blades : thinking about cutting them to 40 cm long to get something equivalent in term of surface ! : 200 cm2 instead of 180 cm2
What do you think ?

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