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Member postings for Robin Colbourne

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

Thread: Is the hobby dying/dead
24/06/2020 14:46:09
Posted by Barrie Lever on 24/06/2020 14:27:12:

Enjoy your hobby, let other people know you are enjoying and there will be people who think that they would like some of that action.

Regards

Barrie

Well said Barrie!

24/06/2020 11:44:29

Model flying is and always has been a new and applied technology based hobby, so as with technology anywhere, it is continually evolving. First Person Video and drones are probably the main things that attract newcomers, and particularly youngsters, into the hobby. Like a lot of us, they will chop and change their focus once they are 'in'.

The rise of electric flight has also meant that a club is not essential for flying smaller models. A sports field, park or farmer's field will often suffice. Simulators mean that there is a fighting chance that some of these flights may even be successful. If not, the EPP construction is at least rather more forgiving than stick and tissue.

The other factor is that new entrants to the hoby are not necessarily youngsters. Pressures of careers,family and finances often mean that people are starting in their 50s or even older. Back in the mid-1990s I taught an adult education class, building and flying R/C models. I was in my late 20s at the time, and the second youngest one there. The bulk of the pupils were in their 40s to 60s with a few in their 70s and 80s.

The last factor is the failure over the years for clubs to invest in their own flying sites. I have been in so many clubs where the majority of committee meetings are about finding and retaining flying sites and having to suck up to the latest whim of the landowner; or go through the whole rigmarole again whilst losing members in the process. Buying a site will never be cheap, but any club planning to be around for the long term should definitely think of doing so. A bit of stability means that facilities such as toilets, clubrooms and model prep tables can be provided. Once you have on-site toilets and BBQ facilities, going to the flying field can be a family outing, which gives the social side that other sports thrive upon.

You only need to look around the multitude of niche Facebook groups to see that model building and flying is still popular. We are fortunate to have a hobby in which the recent lockdown was a benefit to get long term projects moving and that attic of ARTFs assembled and ready to go. The average modeller's mental health is probably in a lot better state than most of the locked down population by now.

Thread: Fokker DV111
19/06/2020 21:23:07

She's looking good Dwain!

Here's a peanut DVIII with a laminated rudder profile. Aero Era Peanut Fokker DVIII

The advantage of the laminated outline is that all the grain is in the right direction, whereas a built up or sheet rudder with lightening holes is going to have some areas with grain in directions prone to splitting.

Here's a description of creating a laminated outline: Laminated outlines rudder/wingtps etc.

You could always build the model, cover, finish and leave the rudder to last. If she's looking ok C of G-wise, go with the plan rudder; if not, go for the laminated one.

Robin

18/06/2020 22:40:32

Dwain, I'll be following this with interest, as its one on my 'roundtuit' list.

I would be very tempted to make a bare minimum built up rudder (laminated 1/16x1/32" outline), as I can't see this model coming out nose heavy
.
Robin

Thread: la.40 in an Acrowot artf?
18/06/2020 22:34:07

Simon, As buying new glow engines means you are finishing in a small and ever diminishing pond, how about seeing if someone has a useable one they would loan or sell on approval?  If you are in a club, try asking around to see if anyone has an engine they don't use anymore. If you were happy with the performance of the 65LA, then most ballraced .50 to .60 size engines should be a comparable replacement.

Edited By Robin Colbourne on 18/06/2020 22:34:56

Thread: What is this model?
17/06/2020 18:16:40

Bob beat me to it. Its definitely Laser 200, Slick 360 or Stephens Akro-ish.

Thread: Gone,but not forgotten kit mfg
15/06/2020 11:48:42

Whilst people with memories of the models and manufacturers are still around, it would be really good if a database of British R/C models and manufacturers over the years could be compiled. It would be great if we could capture some history on the people behind the models as well as the development and manufacture of the aircraft themselves.

Clearly this would be a lot of work, and it would be ideal if it could be in a format in which anyone could add to it, with a moderator checking submissions. Is there any such software that would allow this? I'm aware of Outerzone, whcih is really good, but something more like http://wiki.rc-network.de.

I have a mystery aerobatic slope soarer kit, called a Sidewinder. I think my brother bought at a Sandown Expo in the late 70s or early 80s. It has a fibreglass fuselage & foam wing and a hand drawn and copied plan. There is no manufacturer's name or address though. Has anyone ever heard of it? Where was it made and by whom?

Thread: Diesel vs glow on a .5cc engine
12/06/2020 18:51:45
Posted by Piers Bowlan on 12/06/2020 18:33:00:

The smell of burnt nitro in the morning is one thing but the aroma of ether will hang around your cloths (and house) for ever and may lead to domestic strife!

Piers, The lingering smell is most likely to be from the paraffin or castor from unburnt fuel. Ether will evaporate away pretty rapidly.

I would second Peter Jenkins and recommend a Mills .75, of which ever type (original, Indian, Irvine, Boddo, etc).  Power can be reduced if necessary by turning a larger prop, which will have the added benefit of reducing the already limited noise still further.

Edited By Robin Colbourne on 12/06/2020 19:00:32

Thread: Ebay sellers...
10/06/2020 23:47:30

Anyone in need of a crankcase for their JEN 37? Jen 37 Crankcase

Edited By Robin Colbourne on 10/06/2020 23:47:52

Thread: Control linkages
07/06/2020 20:39:25

Hi Murat

I agree with you. A screw crushing a piece of unidirectional carbonfibre rod is asking for it to crush and break up, leading to a loss of control authority. Epoxying on a snake end or binding a piece of steel rod (softer than piano wire would be desirable) on to the end of the carbon rod would be a better approach.

Robin

Thread: Cox 0.49 Aeromodeller magazine ad from the 70`s
07/06/2020 11:43:36

Although there was a Cox style tank available as a spare for the DC Wasp, they later produced the DC Bee with the tank supplied, and the beam mountings removed.

DC Bee

Thread: Newbie ish
05/06/2020 22:33:07

Ally, What method of lauching did you have in mind? When I started, the choices were towline, bungee, or a small engine on a power pod. These days an electric motor with a folding propeller or discus-launched are popular methods.

Discus-launched means holding it by a peg though the wingtip and as the name suggests launching the model as high as you can discus-style.

A talk to Gliders would be a good start. Despite their stock looking rather diminished, they still have quite a range and are open for mail order: Gliders.UK

I've got a FlySky FS-T6, the model before your FS-i6, and I've read plenty of reviews of people who are happy with them. Most current servos are compatible with your FlySky receiver, although you may have to trim the indexing lug off Futaba servos to make them fit through the hole in the plastic case to reach the connector pins.

 

Edited By Robin Colbourne on 05/06/2020 22:33:39

Thread: Floatplane waterproofing
05/06/2020 22:09:40

RTV just means 'Room Temperature Vulcanizing', i.e. it cures on exposure to atmospheric moisture at room temperature. Therefore bathroom silicone sealant is RTV, although it often has fillers in to reduce the cost and possibly enhance certain properties, so isn't 100% silicone.

What 100% RTV Silicone means

Thread: Litho plate substitute?
04/06/2020 08:15:22

The Airbus A380 used an aluminium/composite laminate called GLARE GLARE - Aluminium/Composite laminate

GlLARE gives a lot of the advantages of composites, with the workability of metals. It would be interesting to see what the effect of laminating aluminium foil/drink cans/lithoplate with different materials would be.

Edited By Robin Colbourne on 04/06/2020 08:16:07

Thread: Blackhorse ARTF ????
03/06/2020 15:31:15

Tigerman, Black Horse Models are based in Vietnam.

How about contacting Black Horse directly and asking if any of the UK stockists have a Wilga on order? If none of the UK stockists have one or are planning to get one, then ordering direct from the manufacturer maybe the way to go.

Black Horse Models Contact Page

Thread: Bowman kit, the Mini Skyman
02/06/2020 00:30:16

Great find Steve! I always fancied a Mini-Skyman but never got round to getting one.

Modelplans.co.uk list the plan, so you could try contacting them: Bowmans Mini Skyman plan from Model-plans.co.uk

If you do build it please post some photos of the build and the finished model.

Robin

Thread: First full size electric aircraft flies.
02/06/2020 00:18:35

There are a good number of short hop flights around the world for which the electric Cessna Caravan would already be the best solution. For passenger safety, propellers must be stopped when boarding and disembarking, which drastically shortens the service intervals on turboprops; hence the reason Aurigny in the Channel Islands hung onto their piston-engined Trislanders for so long. Air-cooled piston engines have their own problems with lots of starting and stopping, so on short inter-island routes electric aircraft are already at an advantage. Two or more motors would be desirable though as electric motors, and speed controllers do fail.

The 90 second Westray/Papa Westray route may be the first to be electrified in this country, Loganair were toting this a couple of years ago, and with the help of Cranfield Aerospace are converting one of their Islanders.

Project Fresson - Electric Britten Norman Islander

Thread: Old Model for old modeller
01/06/2020 11:01:23

Victor, Just in case you are still looking for Precedent T180/T240, this one came up in East Grinstead on Facebook Marketplace. He says its 8' span so may its a T240, otherwise he's a fisherman and its actually a T180!

Precedent T180/T240 in East Grinstead on Facebook Marketplace

Thread: Gone,but not forgotten kit mfg
30/05/2020 23:04:01

If you had the KeilKraft Handbook in your youth, you probably drooled over their 'Intruder' F3a pattern ship. 72" span for 10cc engines and 'full house' radio... The stuff dreams are made of! That picture in the Handbook was the only sight I had ever had of this mythical beast...

...until now...

That twin exhaust tail looked familiar, although the canopy line has been changed to make it more Curare-ish.

KeilKraft Intruder - F3a Pattern Model
 

Edited By Robin Colbourne on 30/05/2020 23:04:25

Thread: Wanted: MFA Yamamoto 1600
30/05/2020 21:59:47

Another New Yamamoto on eBay starting at £5: New Yamamoto in Northampton

If you are into these, it would be worth it for a spare fuselage.

The tailplane looks decidedly small and definitely not the original shape

Regarding Andy Stephenson's point about the name; whilst watching Those Magnificent Men in their Flying Machines for the gazillionth time, I noticed the Japanese competitor's name was Yamamoto. Thanks to Eric Sykes's sabotage to his aeroplane, his final 'arrival' bore a marked similarity to some of those on my original MFA Yamamoto.

ITs a good thing I don't live anywhere near Northampton, otherwise I might be tempted to give homes to some of his other models.

Edited By Robin Colbourne on 30/05/2020 22:03:15

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