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| Helicopter rotor without any visible vibrations http://www.skywolverines.com/viewtopic.php?f=6&t=6209 |
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| Author: | Girodreamer [ Mon Jan 09, 2023 5:19 am ] |
| Post subject: | Helicopter rotor without any visible vibrations |
Hi all, this video amazed me ... this man's heli stick has absolutely no vibrations at all is it because it is an helicopter rotor or because it is a really well built rotor ? I did not know this Hungarian heli ... smart people G |
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| Author: | Hillberg [ Mon Jan 09, 2023 2:18 pm ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
He's showing off his trim system With the gyros the mass of the rotors and the teeter /control system are moved out of the center of rotation shifting the mass spanwise & chordwise with each revolution. Your stubby mast is tilted for your cyclic feathering a helicopter uses a swashplate and a fixed mast 
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| Author: | Girodreamer [ Mon Jan 09, 2023 5:26 pm ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
yep you are right, I only have flown gyros and know nearly nothing about helis even if we have a kompress in the hangar it is true that it is not the same but I was amazed to see this shakeless trimed stick |
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| Author: | Hillberg [ Mon Jan 09, 2023 6:35 pm ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
Test flew a CH-7 it was like a mini Jet Ranger - smooth balanced controls - easy to just hop in and fly, then the engine quit The autorotation was a non event to a perfect landing. . . Oil stand pipe sucked air at 1/2 a tank... Lots of one offs through the years . The CH-7 Marianos MC 1 and Kevens CH-7 copy were #1 - The only gripes was the power plants conking out |
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| Author: | elwood [ Mon Jan 09, 2023 6:44 pm ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
I like the CH-7, it is a sweet little copter from what I have seen. |
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| Author: | Girodreamer [ Tue Jan 10, 2023 2:58 am ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
yes it seems to be a nice heli from what I can see in the hangar, the only thing is that the fellow who own it enventually prefers flying his M22 gyro, certainly because he learnt to fly helis to late (he is 65) and that he will never become a real heli pilot he is afraid in fact |
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| Author: | GyroBlazer [ Sat Jan 14, 2023 7:42 am ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
A few of the mustering gyro pilots in central australia have converted to ch7 helicopters. Apparently they fair well in the dusty conditions. They'd be putting some hours through them I wish they made the single seat hungarocopters like in that video. They still make a stealthy looking two seater |
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| Author: | Girodreamer [ Sat Jan 14, 2023 5:03 pm ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
If I remeber well one of our email converstation, Wolfy had told me that there has been a change in the kompress ch7 service program and that the cost of maintenance had sky rocketed making some of the CH7 mustering pilot to think to come back to gyroplane Wolfy was spending long days in flight on a gyro .. the heli cost for the same work would be prohibitive the ch7 is a really good machine .. reliable and safe compared with other ultralight helis ... we had to lethal crashes in montélimar with those small helis ... |
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| Author: | Cameron [ Thu Jan 26, 2023 3:39 am ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
The only gripes was the power plants conking out[/quote] Ha that's a pretty big gripe ;) Glad it all went well. |
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| Author: | Cameron [ Thu Jan 26, 2023 3:41 am ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
Girodreamer wrote: Hi all, this video amazed me ... this man's heli stick has absolutely no vibrations at all is it because it is an helicopter rotor or because it is a really well built rotor ? I did not know this Hungarian heli ... smart people G That's astonishingly well set up smooth as silk. Takes ages to get rotor system on a gyro that good have to be more difficult with a chopper with all the additional moving parts. It would inspire confidence in the design. |
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| Author: | MadMuz [ Fri Jan 27, 2023 2:57 am ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
It could be because the rotors were made by well hung-garians?  Nabs would know for sure      
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| Author: | Girodreamer [ Fri Jan 27, 2023 3:20 am ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
Hi Murray, Hilberg has provided the explanation of this in his message (quoted below) I think it explains most of the difference in vibrations btw helis and rotors following the advice of a friend, on my home made rotor head, I have lowed down the teetering axle by 25 mm (compared with my Averso rotor head) modifying the rotor head main body bar and getting rid of the drum brake I don't know if it will have any effect on the vibrations, but it will at least reduce the cantilever force on the controls which is greater on tandems. Hillberg wrote: He's showing off his trim system With the gyros the mass of the rotors and the teeter /control system are moved out of the center of rotation shifting the mass spanwise & chordwise with each revolution. Your stubby mast is tilted for your cyclic feathering a helicopter uses a swashplate and a fixed mast |
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| Author: | MadMuz [ Fri Jan 27, 2023 6:50 am ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
Giro... my last post was a joke (attempted humor) In english, 'well hung' means a big dick so we tease Nabs about being a 'well hung' -arian... you have to be silly and have 'school boy humor' like us to understand   
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| Author: | Girodreamer [ Fri Jan 27, 2023 4:59 pm ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
ok (((-: idioms are the most difficult thing to learn in a foreign langage .. (((-: in french we say "bien monté" hahahaha just in case you meet a french girl ... if she says "il est bien monté" speaking about you is that she is happy with your gun |
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| Author: | MadMuz [ Fri Jan 27, 2023 6:59 pm ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
Girodreamer wrote: if she says "il est bien monté" speaking about you is that she is happy with your gun Strangely... no girl has ever said that to me? (in any language) 
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| Author: | Hillberg [ Fri Jan 27, 2023 8:08 pm ] |
| Post subject: | Re: Helicopter rotor without any visible vibrations |
MadMuz wrote: Girodreamer wrote: if she says "il est bien monté" speaking about you is that she is happy with your gun Strangely... no girl has ever said that to me? (in any language) Be lucky no guy said that to you Unlike that Phizer fag who lost his shit in that pizza place with Project Veritashttps://www.youtube.com/watch?v=jXIvWtMVtcs https://www.youtube.com/watch?v=2SjtYsET8Tc |
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