For all you Autogyro Nuts!

Mark Barnes wrote:There NOT good!!!

David Sargent wrote:Have a look at this vid
I watched it...Interesting
I have the plans for the Begi if you fancy a go at one

DaveS

David Sargent wrote:Been looking at all the pics on the web regarding autogyro`s and they all seem to be piddling little electric ones. As I have loads of spare bits for Raptor 50`s in stock I fancy building a biiiiiiiiiiiiiiiiiiiiiiiiiiiiiiig one with a forty on the back
I thought that too. The little electric thing was nice but a bit fiddly. The other video one didn't fly too well. Need to stand in the middle of the strip to follow it wherever it wanders
So
If you're going to have one have a big one ! With muscles.

Do you think that fully semetrical blades would work on an autogyro. I have a set of 600mm ones which would give a rotor disk of 1400mm. Slight damage and no good for a helicopter any more but repairable for experimental purposes
Back in Macclesfield, whilst following up some model car spares we came accross a Kalt Autogyro ready built ready to go. It had Semi Symetrical blades AND variable pitch, but just for trimming. Also a paddle bar and cyclic control
The OS50 engine was at the front and the blades had negative pitch to enable them to be driven by the air flowing through. In turn the slim Clark Y wing (2 blade) gave lift by travelling through the ait forwards. The rotor shaft was tilted back about 5 deg
I used to have a Rodart by Dennis Neil freeflight. Had Albon dart at front and 3 blade tissue/ balsa clark y rotary wings on hub running on fixed pylon leaning back 5 deg.
Used to fly it at national comps on airfields, particularly Tilstock for fun
From hand launch it climbed steadily up to and through cloudbase and then eventually re-appeared out of the clouds somewhere else wind milling down to a safe return. I've got a photo somewhere of it in my hand by J O'D

Same basic design concept as the Begi only bigger. The joy of using a recycled Raptor head would be that I could make the blade pitch adjustable rather than bending things with pliers as they seem to do on the smaller ones.

What do you think
Ooh Yes that sounds good to me
Just the blades to go
The blades could be home made. Balsa rear 2/3TE and Hickory 1/3 leading edge, maybe with inset lead wire LE balance weights. It's not going to be a competition model.
The rear or front facing engine could have a bad effect on steering. Don't forget about the gyro effect
I'm sure Robbe used to do a complete 60 powered Autogyro and they flew quite well
PQ
daveS