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Member postings for Big T

Here is a list of all the postings Big T has made in our forums. Click on a thread name to jump to the thread.

Thread: Revolver Pusher type Autogyro trainer
23/06/2019 12:10:21

Great pictures Rich, it was a great day to test out the Revolver 2 in different wind conditions as the thermals went through. I need to make a couple of mods to the Suzuki Revolver. Air scoops and vent holes to cool the ESC and a better Lipo security metnod. Apart from that she flew like a dream.

Thanks go to Ian and club mates for the day. Well worth the 1.5 hour drive.

10/06/2019 09:57:03
Posted by B YELLOP on 07/06/2019 09:01:35:

Hi, the article says prop is 8x7.5. It is illustrated as 3 blades. On this site I have seen many pictures/vids that are 2 bladed!. What is the size recommended for the D3530/14 motor and how many blades please. Being a returnee I have a lot to learn.

Regarding the balancing of the main rotor blades.

You recommend using Balsaloc , I assume this is to add weight in the right place!!. What else can be used as my local model shop has indicated that this type of product is not widely used. What type of product is acceptable for same purpose, assuming it will be covered at some point? As is glaringly obvious I have every thing to learn about modern covering types and techniques so please bare with me.

So many questions, sorry to be such a pain .

Barry

Edited By B YELLOP on 07/06/2019 09:05:43

I have tried several methods of blade covering and balancing. For adding weight to the blade before covering I have used I have used urethane varnish, balsaloc, pva, water based primer undercoat, They all work. Traditionally I used a heat shrink covering film ensuring that I use the same amount on each blade. For final balance after covering I normally use electrical insulation tape on the c of g. To move the c of g I insert small nails in the end of the blade and fix in place with glue. We have even used coins as a field fix.

30/05/2019 10:12:25
Posted by B YELLOP on 30/05/2019 08:33:48:

Hi, sorry but I forgot to say that I tried a Tower pro SG92R that's 14mm min from the ply support to the top of the arm.barry

If its any use, I used a HiTech 83mg. I also didnt like the idea of burying the servo (and misread the plan LOL) so I have mine with the control arm sticking out and the pull pull wires held in tension with a clip I designed on Fusion 360 and printed up. If I was building again I might consider putting in 2 tubes as guides as per the RH Gemini or even a lightweight wire pushrod as the Depron is rather fragile and mine has cracked around the horn in transit.

21/05/2019 21:20:31
Posted by Graham L on 21/05/2019 09:15:06:

Tim

1am using a 3530. 10 1400 kv motor on a 9x 6 APCe prop. Loads of power and reasonable run time as it is flying normally at around half power.

Graham

Hi Graham, what amps are you pulling? Or what Esc rate?

21/05/2019 07:16:40

What motor Chris?

20/05/2019 18:50:50

Rich, having problems with sourcing the 3 blade 8x7.5 prop. Any clues as to a supplier? This might be the reason for my lack of grunt from this motor.

20/05/2019 11:23:08

First hops and flights completed yesterday with zero drama on my Cabriolet version. So important to be patient and get those few trimming hops done and not rushed.

Mine came in at 1.08kg so slightly on the beefy side. For those gyro virgins building the Revolver2, I always set up with the hang angle on the max side as this will make the handling more docile. My 3s 2200 was pushed as far forward as possible so I will then start to work it back bit by bit until it becomes too "frisky". Also this is a small model so dont fly too far away, keep it in close or you will lose orientation. Best tip I was given when i started for take offs is to stand half way down the strip and and let the gyro comes to you and then pass you. That way its not so far away when it gets off the ground.

11/05/2019 18:01:05

I have drawn up some parts for the Revolver 2 that can be 3d printed. They are a holder for the tail feathers and a wheel spat. This holder will allow the Depron parts to be easily replaced. We have found on other gyros such as the Gemini, that these parts are easily damaged in transit and flight. This holder grips the Depron which can then be further held in place with a couple of cocktail sticks. Credit for the original idea goes to Rich Elliot. The spats are 1.mm thick and come with a mount which is glued on in the side of the spat and a clamp which is screwed to the mount.

https://www.thingiverse.com/thing:3623693

https://www.thingiverse.com/thing:3623711

04/05/2019 19:56:05

I have knocked up a 3d printed stab and fin holder. The reason is that I have a tendency to damage Depron tail pieces on another RH design, the Gemini. A good friend came up with an idea to secure the tail pieces with cocktail sticks pushed through the balsa mount, which does work very well. Now I have a printer I thought it would make swapping parts a bit easier. If it works I will upload the story file to thingiverse for free use. I am also working on some spats

 

 

Edited By Big T on 04/05/2019 19:59:36

Edited By Big T on 04/05/2019 19:59:58

04/05/2019 10:53:41

Right got it . So I need the canopy to procede or make an open cockpit version temporarily. Ill get on with the other bits, leave that till last then. Got some 60mm AJ blade blanks left over. Wish I had thought to put snakes on the inside now.

03/05/2019 07:29:49

Iceland **LINK**

 

https://youtu.be/DnxLjbwmJjM

 

 

 

 

 

 

 

 

Edited By Big T on 03/05/2019 07:30:53

Edited By Big T on 03/05/2019 07:31:35

Edited By Big T on 03/05/2019 07:32:01

03/05/2019 07:20:50

Iceland **LINK**

03/05/2019 07:16:26

B&M. **LINK**

03/05/2019 07:08:34

Amazon have this. Omega White Cider (4 x 3 Litre Plastic Bottles) https://www.amazon.co.uk/dp/B00XPEX89I/ref=cm_sw_r_cp_tai_EQ9YCbAPJ984W only trouble is you have to drink it!

02/05/2019 22:28:34

Rich can you post up some snaps of the canopy and the fuz with the canopy off please? In particular the rear/servo end? I am considering making mine an open canopy version or making the canopy out of blue foam like Rich’s Rex.

Thread: Panther Trainer Autogyro
15/04/2019 15:36:56
Posted by Richard Franks on 15/04/2019 10:26:09:

This is very interesting so will be drilling my mounting holes individually in future .Are there likely to be any Autogyro fly in~s this year? I am based on the Kent coast.

One silly question about flying the Autogyro. I have found height and descent are dictated by power (throttle control).If, like a fixed wing plane, your applied ~down elevator~ to an Autogyro would it descend or just slow up the rotor speed or both?

Waiting for the wind to drop and getting itchy fingers.

Hi Richard, yes there will be fly ins this year. First one is up in Peterborough around the 4th of May. Location and dates of others usually revolve around the UK meet at Winterton MFC.

This is not a silly question at all. "down elevator" or forward rotor tilt is a control we prefer not use on Delta heads when the model is in the air. We would use it to stop the rotors on the ground. The reason is that it can stop the blades spinning very quickly. With tractor models it will nearly always result in the nose tucking under and once the top of the blade hits the air flow there will be no lift. So in a way you are correct. There would be a sudden descent and the rotor would stop! What you can do for a rapid controlled descent is to pull pack on the rotor and increase the revs. This has the effect of slowing the model forward flight right down and increasing the head speed. Vertical descent is then controlled by the use of both controls.

Thread: Autogyro Get togethers
08/09/2017 10:39:12

Posted by Piers Bowlan on 08/09/2017 08:33:41:

Hi Rich, There are three pusher models in one of the videos, they look rather like the full sized MTO sport or Caladus auto gyros (clue;-they are coloured yellow, Green and Pink respectively in the vid!). Are they foam and is there a plan yet? Just curious.

I think you are referring to Steve Jones Designs AC 20. There are free plans for download

Auto Skunkworks - AC20 EPP build

https://r.tapatalk.com/shareLink?share_fid=8309&share_tid=2340262&url=https%3A%2F%2Fwww%2Ercgroups%2Ecom%2Fforums%2Fshowthread%2Ephp%3Ft%3D2340262&share_type=t

https://www.rcgroups.com/forums/showthread.php?2340262-Auto-Skunkworks-AC20-EPP-build

Thread: Panther Trainer Autogyro
02/06/2016 10:31:36

HE 30 now called 6082.

02/06/2016 09:38:49

I get all of my alloy sheet and strip from http://www.mallardmetals.co.uk. He is a very friendly man, if you ring him and have a chat he will send you exactly the dimension you need. As far as a steerable tail wheel, in my opinion it's not needed, I just put in a skid. The rudder is plenty big enough to swing the tail and in any case you will need a more forward cg at first but that depends on the size of lipo, or are you going glow? BTW rumour has it that coolwinds have a limited supply of ready made blades in stock.

Thread: Autogyro Get togethers
02/03/2016 14:37:05

Chiltern MFC Autogyro Fly In 2016

We are trying to fix a date for this years event. Our usual weekends in May clash with the Old Warden Mayfly and the Greeenacres events. We also have had an issue with our patch over the warm and wet winter which will could affect April and early May. So how does the first weekend in June sound?

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