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Member postings for Gary Binnie

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

Thread: Adding Span To A Low Aspect Wing
28/06/2020 10:36:53

I had the same idea for one of my gliders, what I hadn't bargained on was the weight of the extra structure, the wing loading remained identical. The increased aspect ratio improved the glide angle and the minimum sink rate.

I have another glider that uses the same fuselage and tails for 3.5, 3.8 and 4 metre wings. Later versions of it use the same tail surfaces with optional longer fuselage.

The lower photo has a 10 cm longer centre wing panel.

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Thread: Forum members' new models: Let's see them.
10/05/2020 20:22:34

I've built a Middle Phase to replace the battered original I learned to fly with in the early 1990s, started on the 5th April, finished today.

Built both wings, ailerons will be a nice luxury. Spot the odd one out!

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27/03/2020 13:23:06

Well I've done all the gardening jobs so time to think about some aeromodelling!

I bought this Chris Foss Xtra Wot kit from SMC in 2014, built it quite quickly but then became stuck looking for fuelproof paint. I had tested two-pack paint that had been mixed in the wrong proportions (not fuel proof), mixed in the correct proportions it is totally fuel proof.

It is my second Xtra Wot, the first was lost to radio failure. I used the optional two seat conversion (hand delivered by Chris to me at the Nationals), spats from Carbon Copy (Chris was out of stock). It uses one standard servo for each elevator half, driving piano wire in a snake. Engine is a new but poorly stored OS120AX, I had to change both rusty crank bearings before running in. The model weighs around 12 lb and is glassed all over.

First flew on 2 December last year, had a radio glitch on my JR DSM2 kit so have swapped to Jeti (usually reserved for my competition gliders). Not flown yet with Jeti.

Looking forward to getting it airborne again, they are great flyers, a big pussy cat. The round discs on the engine mount are removable trim weights (penny washers), it is slightly nose heavy at the moment.

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Thread: OS FSR engines
01/02/2020 21:05:41

I restored this 90 FSR recently, shame that I didn't take any 'before' photos. The silencer is from an OS 108, the engine will eventually power a Goldberg Ultimate 10-300.

I used the carburettor for a while on an ASP120, it transformed it.

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Thread: Dynam Hurricane
29/01/2020 07:57:55

I'm ex-RAF, used to teach gliding courses at Kingsfield, still have good Cypriot friends and my wife's godparents live in Peyia.

The stony ground is a problem for outlandings with full size gliders though some have been caught out!

I've seen rocky slope sites that used a catch net for landings and have landed in bushes myself though that was because there was too much lift to land normally (Phase 6, no airbrakes).

You could save your Hurricane for when you return to the UK and get an SAS Wildthing slope glider, they are virtually indestructable and you could fly it all day at the cliff sites and other slopes around Akrotiri.

Cheers

Gary

28/01/2020 18:23:26

Have you looked at other possible flying fields in Cyprus?

Kingsfield - Cyprus Parachuting Centre, they used to only operate in the mornings as the sea breeze set up at lunchtime.

Akrotiri? Might have an RAFMAA club or at least one modeller, service clubs often fly directly outside the control tower so they can be told directly to pause for full size traffic movements.

Sports pitches, usually 'astro turf' as the grass doesn't grow well.

Cheers

Gary

Thread: Flair Fokker D.VII Build
19/07/2019 19:53:29

Have to admit I've got a few in the loft that are 'in progress'!

This will be a good model once the bugs are ironed out.

It was initially prone to nosing over on take off and flew with full up trim, I removed a strip of lead from the firewall which improved it a lot (CG still within limits).

18/07/2019 21:27:55

I shall clean the rust off and use good epoxy.

Soon be back in the air again.

18/07/2019 20:42:07

Old thread alert! Did this model get finished?

To cut a long story short I acquired one of these recently, a house clearance item so I have no history. I believe the model had not flown and the engine (Laser 70) probably needs running in.

I suffered a lean cut on the second flight today, managed to pull off a reasonable dead stick landing into a rough part of the field but the model caught a large thistle and ground looped. At first I thought there was no damage but when I picked it up the top wing was loose, the metal strut attachment strips had pulled out of the wing.

In the photos here a dowel or spigot is shown passing through the plates, is that how it should be?

It was lucky that I didn't try a loop!

Cheers

Gary

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Thread: Setting up for Flaps
27/03/2019 19:19:16

I'm afraid all my electro gliders are on Jeti now but I'm fairly sure the channel assignment was by the JR manual.

I know at one stage I used the Aux 4 port but can't remember why, I also had an intermittent right flap problem (sometimes it moved, other times it froze), spent ages looking at the wiring but in the end it was down to a conflicting mix.

There is a function on the DSX9 (and others) which changes the throttle stick control between throttle and crow brake depending on the flight mode, I think it's called 'moto hold' but I never dabbled with that.

On Y leads, the higher performance gliders can have their flaps move up (reflex) for a high speed/low drag aerofoil. This handily also means that the flaps can work opposite each other for extra roll control, in that case the flaps can't easily share a channel. The independent sub trim function for each flap would be lost though mechanical adjustment would still be available through the pushrod clevis.

Cheers

Gary

27/03/2019 11:23:30

The problem might be in the 'DeviceSEL menu.

This is my menu for an F5J glider, I have the motor on a switch only (labelled T.hold.Mix on theTx), crow braking enabled in all flight modes on the left stick (Mode 2).

Prog Mix 4 is MOTO > AUX2 (Pos 0 = -125% Pos 1 = 125%)

I have other mixes in there but they are just elevator compensation, ailerons up for crow and snap flap (elevator/flap mix).

I moved to a DSX12 which has the same wacky glider channel assignments, it can do a six servo wing but it's mighty awkward. I gave up and moved to Jeti where you tell the transmitter what channel you want things on.

Here's the screenshot.

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Thread: Fuse
25/03/2019 10:29:35

It's on another website but I built a Hacker Fly glider for fun.

It has a clockwork dethermaliser timer (can be seen in post 11) and an autorudder.

Perhaps a KeilKraft Caprice would be good for you to start with, I've not built one myself.

Cheers

Gary

Thread: Wot wing for wots wot....
05/03/2019 20:19:42
Posted by Tim Flyer on 05/03/2019 19:19:15:

Garry you are Wrong! The Wot 4 kit is either available as “Mark 3 with 56 inch tapered d6b2b14e-20eb-4dbf-8d5d-498d03a0ca62.jpegwing for aerobatics and amazing Manoeuverability” or the “Classic version with 52 inch lower aspect ratio parallel cord wing for exceptional manoeuverability and slow flying ability”.

I discussed My choice on the phone with Chris Foss personally and he said the laser 80 engine would be fine in the mark three tapered wing version. Chris Foss does know about the his own planes that he himself designs I am sure! The wing choice is not dictated by engine choice. Box photo below for physical proof . In any case my 80 powered version flies fine and at no stage have I wanted the classic wing

If I am wrong then so is Chris Foss.

This thread is about the Wots Wot biplane, not the various monoplane Wots.

05/03/2019 16:25:14

The engine choice (weight) dictates swept wing or not. From the instructions if an engine weighing 20 to 28 ounces is chosen then the wings should be straight, if an engine under 20 ounces is chosen then the wings should be swept and the designed CG moved 1" rearwards.

Also from the instructions a heavy engine can be used with straight wings and tail weight.

05/03/2019 15:08:40

You could go mad and have one wing straight and the other swept like mine. Not in the instructions and you have to work out new interplane strut positions.

The Pitts Special is like this.

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Thread: Advice please on Wots Wot engine
29/10/2018 12:06:50

I must have been thinking of another model with the nose length option.

It is the optional sweep back or straight wings that decide the weight of the engine.

Straight wings for engines weighing 20 to 28 ounces. CG 3.75 inches forward of trailing edge at centre section.

Swept wings for engines under 20 ounces. CG 2.75 inches.

I have a straight lower wing and a swept upper wing, CG between the two options!

29/10/2018 11:49:03

I have an ASP 61 two stroke in mine.

If I remember correctly there is an option at the fuselage building stage to either have a long nose or a short nose depending on the weight of the intended engine (for CG position).

Chris Foss Wots-Wot

Thread: Refinishing classic fibreglass fuselages
28/07/2018 21:08:12

I've got a thread on the BARCS website on restoring a MPX Flamingo Contest.

There are before and after photos. I used Rustoleum 'Painters Touch' white which I'm fairly sure is an enamel. Gave a nice finish with no undercoat. Think I bought it in Homebase or B&Q.

Can't report how durable it is as I've not been able to fly it since the restoration.

I have an MPX ASW22, DG600 and Fiesta, all unrestored but flyers.

Sprayed a Teakle Vega with Flair Spectrum/Spectra which was disappointing, could have been a bad batch or my technique.

Cheers

Gary

Thread: Spruce or Obechi for a wing spar?
20/06/2018 19:21:42

I have a Screwfix wallpaper pasting table (cost a whole tenner!) made of pine, smells lovely in the car! I use it to avoid bending down at the flying field, back is not good.

To put the spars I posted above into context here are the gliders they turned into, Hi-Phase and Centi-Phase.

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20/06/2018 18:52:09

Spruce spar, reinforced at the root using tapered sections.

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End result, reinforced with ply and balsa webbing.

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Splicing from spruce to balsa mid-span.

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Credit belongs to Chris Foss who drew the plans for these gliders.

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