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Member postings for Ron Gray

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

Thread: Antonov AN124 Ruslan
21/01/2020 13:00:03

Just need a printed / depron trailer to cart it around on now!

Thread: ESM Tigercat - powered by Laser engines
18/01/2020 22:15:02

I now have 2 of these beauties thanks to Martian. They really are splendid and I'll get to work fitting them as baffles to the cowls.

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Thread: ESM Bearcat - powered by Laser
17/01/2020 22:23:02

Some more progress, cockpit canopy trimmed and fitted (I will re-do the cockpit interior when a) the maiden flight has been completed and b)when my 3D printer has been delivered and setup!)

Canopy.jpg

Nose weight added to chin of cowl

nose weight.jpg

Looks nice with the canopy and cowl in place

Fuse.jpg

Nicely encloses the V twin

Cowl front.jpg

17/01/2020 15:42:05

The wheel wells have now been closed in and painted to match the dark blue of the rest of the airframe, just got to fuel proof them now.

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Edited By Ron Gray on 17/01/2020 15:42:48

17/01/2020 15:41:30

So that was the back end sorted, for now, my attention turned back to the wing. I had already machined and refabricated some oleos and they fit quite nicely in the wells. however, the wells themselves need work to them as they are just an open structure and my concern, if flown like that, would be the slipstream getting inside the wing structure and possibly blowing the covering off. As the plastic covers (mentioned above) don’t fit, I’m going to sheet out the wells with some thin balsa and that is the next job on the to do list.

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17/01/2020 15:36:54

My fault, too many words, but that's the problem when retracing 'history'!! It will soon be up to date though, a couple more posts and we'll be there. Here the wordy bits that I had already written to go with the piccy

I did revisit the tailwheel controls and decided that I needed some form of shock absorbing in place so I have removed the pushrods and replaced them with springs.

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Edited By Ron Gray on 17/01/2020 15:38:42

17/01/2020 14:29:56

Beat you to it Jon, I have already changed the linkage to this (as I said in my post above, this thread is more a record of what I have done, not so much what I'm doing!!)

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17/01/2020 11:25:18

I agree with you Chris, they are / were decent kits and it's a shame they went belly up.

Progress (on this thread) should be fairly quick as most of the work is already done but there are still things to complete such as fitting the canopy. Other bits such as making the landing gear doors (missing from the kit as was the drop tank) will be left until after the maiden flight.

17/01/2020 10:05:13

This turned out to be a long process, the tailplane fixings were missing from the kit so I had to make up my own elevator mounting pins and spar tube. The supplied tailwheel assembly was a bit rudimentary so I decided to fit my own which, although still not true scale, looks a lot better than the supplied coiled wired job. The wheel itself is really too big for scale but it does allow for some suspension via the tyre. The actuating mechanism for both the elevators and rudder are hidden within the fuse and although the elevator one is straightforward and easy to get at the one for the rudder definitely isn’t. The instructions for this left a lot to be desired in fact if I had followed them then I wouldn’t have had a rudder connected to any servo! No access holes had been allowed for in the fuse so I ended cutting out a chunk from the underside so that I could feed the actuating mechanism in and then fitted a hardwood block to the bottom of the fuse as a bearing block for the control rod. After connecting the pull pull wires I was then able to fit the mechanism in place and then sheet in the cut out I had made. A mistake that I made at this point was not directly connecting the tailwheel steering arm to the rudder control arm. I had planned to use piano wire from the tailwheel to the rudder servo as this would give me some ‘spring’ to absorb shocks but when I connected this up and tried it out, the difference in height between the tailwheel control horn and the servo horn is too great and allows the wire to flex in the middle, and there isn’t a enough space for me to get inside the fuse to fit a support tube. In the end I opted for a small MG servo to control the tailwheel and whilst not ideal, being mounted at the rear end at least it works. I may revisit this arrangement later.

Elevator control

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Rudder control with the hardwood 'bearing' block just visible at the top

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Cut out to fit the rudder control subsequently filled and ready for final finishing (later!)

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Steering servo and connectors Mk1

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Covering piece and tailwheel in place

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17/01/2020 09:56:37

Roll on about 10 months and I swept off the cobwebs and got back into it. Modified the tank to have 2 clunks and mounted that to the servo shelf, mounted the servos then go to grips with the rear end of the ‘plane.

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17/01/2020 09:55:12

Another non blog thread based on the build that I'm just completing on the Bearcat. As per the title, it's an ESM offering and I think one of the last, judging by the mixed bag of missing and doubled up components in the ARTF 'kit'. Also, as per the title, it will be powered by a Laser 240v twin.

I bought the kit about a year ago and got stuck in with the wing assembly which was fairly straightforward despite missing bits such as the locating dowels and the wrong plastic gear bay housings. I didn't take any photos of this part of the assembly as it is much the same as other ARTF's. I then mounted the 240 to the bulkhead, mounting it upright to ensure that the feed lines to the carbs were not above the carbs. At that point I put it to one side as there were then lots of fiddly bits to do which I didn’t face doing!!!

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Edited By Ron Gray on 17/01/2020 09:57:06

17/01/2020 09:54:03

bearcat.jpg

Thread: FrSky Major Update for most TX and RX
16/01/2020 18:39:20

I'm in the same boat as you Kev, think I'll have to carefully plan when I carry this out!

Thread: Laser Engines - Technical questions
16/01/2020 17:59:51
Posted by Jon - Laser Engines on 16/01/2020 16:40:13:
Posted by Ron Gray on 16/01/2020 14:03:37:

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Looking good Ron yes

Thanks Jon, will be putting up a mini thread on the build soon.

Thread: HobbyKing covering
16/01/2020 15:01:02

HK, Rapid and Bangood all the same. I've had recent deliveries from all 3 and they behaved the same when applying. HK were by far the cheapest and I think that some shops maybe buying from them and reselling!

Thread: Laser Engines - Technical questions
16/01/2020 14:03:37

I can't really see the logic of the design as shown in the sketch. If the 2 tanks shown at the top are feeding the engine then it will cut out as there is no vent to those tanks. Plus when you fill the top 2 they will overflow into the bottom one which will fill but it will not be able to supply fuel to the top 2. If you invert the tanks, so 2 at the bottom and fit them as per the chicken hopper plumbing then it will work and TBH the work involved is not that much.

Can't you just put the engine in upright? or isn't there cowl room to do that? I was lucky with my Bearcat installation that allowed me to do just that.

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Thread: SIG Kougar Refurb and Electric Conversion
13/01/2020 22:38:14

Ah but just think of all the fun you’re having Gary wink

Thread: ESM Tigercat - powered by Laser engines
04/01/2020 22:12:46

Chris, I fully agree that it’s directing the air / baffles that is the most important thing, I know that from past experience with my Wots Wot XL when it was powered by a 240v. The engine just wasn’t happy until I had baffled the cowl.

Regarding fuel, I use Model Technics 5% Laser.

04/01/2020 08:45:11

Hi Martian, that's very kind of you and that would be great if you could print off a couple for me. The cowl is 190mm diameter.

PS the i3 is the printer that was / is on my short list and the wife still keeps saying I should get one!

@ Jon - I must admit that I always laboured under the impression that it should be 1 in to 3 (ideally 4) out?

Thread: X10 Horus update
03/01/2020 20:10:01

@Bob - new TX with ACCESS built in.

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