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: Your experience of Banggood delivery time?|
The impression I get is that the sellers either aren't aware of the Royal Mail's ban on delivering Lipos, or just take a chance on some getting through and refund on the rest. The Royal Mail must have one enormous pile of seized Lipos somewhere!.
A friend was telling me how several of the people with whom he works get their orders from BangGood and Aliexpress sent to their office, as they aren't home when the postman arrives. Given the long delivery times, most have usually forgotten what they ordered, so its a bit like 'Secret Santa' when they open their parcels!
|Thread: Where can i buy 2mm pushrods 750mm long|
Christopher, I haven't tried carbon pushrods myself, I've always used snakes, or, in the old days, 1/4" square balsa pushrods (which I wouldn't recommend). On throttle linkages, I've used bicycle bowden cable inner with soldered-on snake ends, in tube similar to those in your picture
If you drill a hole in a piece of wood the size of the threaded end of the snake end, then put it in a vice with the open end pointing up, you can stand the carbon rod in it vertically. The epoxy will then form a nice fillet and not run down the rod. When you do the inner one on the model, slide the rod in from the tail and have the model pointing nose down to do the same. You can have the snake end attached to a clevis and the servo arm on the servo, so that end is fixed. The weight of the carbon rod should hold it in place, or you can rig up a rubber band at the other end pushing it in.
Edited By Robin Colbourne on 04/03/2020 10:57:08
|Thread: Merco Engines|
Here is Mike Billington's Engine Test of the Como 51 in control line stunt form, courtesy of Sceptreflight: Como 51 Engine Test
|Thread: I have Got This Far Should I Just Fly it|
With regard to propeller rotation for a twin, both the P-38 Lightning and F-82 Twin Mustang reversed the direction of rotation between the prototype and production aircraft. In the case of the F-82, the airflow over the centre section was so bad that the middle part of the wing between the two fuselages was stalled and the prototype could not leave the ground!
|Thread: all good things eventually come to an end !|
Stuphedd, I can appresiate the pain you're feeling. At RAE (Royal Aircraft Establishment) Farnborough we had much the same, with the use of taxiways as runways and large grass areas for thermal soarers, There was enough space that the gliding club and aero club could use the appropriate into wind runway without us getting in each other's way. The bi-annual airshow did put a damper on things for a few weeks, but we could live with that. The change from an MOD airfield to a business jet airport was the death knell for the club. Weekend operations were the beginning of the end. Nowadays a row of hangars stands on our usual site.
Edited By Robin Colbourne on 24/02/2020 21:25:42
|Thread: Is this weather ever going to get better!!!!!!!!!!!!!|
Romeo Whisky, I love the DUKW. If I ever won the lottery, which, given that I don't buy the tickets, is rather unlikely, a DUKW is what I would buy! I blame Airfix for this particular obsession.
|Thread: Centrifugal clutch pads - from where ?|
You could try Bonz-MX, formerly 'The Ped Shed' They sell spares for Chinese quad bikes, engine driven scooters and mini motos. The most recent phone number I can see for them is 01252 378398 They are in Mytchett, Surrey GU16 6DJ
Otherwise, what about theses 52mm clutch shoes? 52mm Clutch Shoes
Edited By Robin Colbourne on 06/02/2020 19:36:52
|Thread: Thin Ply|
Nigel, In the design you are building, What is the thin ply used for?
If thin ply is the only thing that will work, and you only need tiny bits, can you get some scraps from a fellow modeller or just buy the ply and keep the rest 'in stock' for your next build?
There is a usually more than one way to skin a cat!
|Thread: Balance point help, advice needed for a Flea!|
According to this Flying Flea Design Notes
Henri Mignet started with the CofG at 41% of the front wing chord, and eventually moved it to 50%, so it may well be that if you are applying conventional aeroplane C of G rules, you've got it too far forward.
|Thread: OS FSR engines|
'If it ain't broke, don't fix it'!
|Thread: dope lifespan|
Thunderstreak, Like you, I looked at the H Marcel Guest site last night and saw the 12 month mention. That is most likely intended for full-size users and is the peiod in which HMG would entertain any complaint about deterioration in quality.
Even in full-size circles, 'use by' dates can be extended subject to the material passing an appropriate test. This is particularly the case with epoxies for which a 'coupon' (test sample) would be kept, and a tensile test piece done if appropriate.
Edited By Robin Colbourne on 21/01/2020 14:43:34
|Thread: engine refurb|
This is the data sheet: Carbon Off Technical Data Report
|Thread: Trendsetters and Iconic Models over the Years?|
Chris, you've just answered a question I've been meaning to ask, namely, 'Who made the Preceptor?'
|Thread: how to launch a glider|
That reminds me of trying to hand launch a Galaxy Wizard with the Solarfilmed fuselage covered in castor oil. As soon as the throttle was opened the nose would tip down causing the prop to try and slash my wrist.
|Thread: Do you love some of your engines so much you don't fly them?|
Typical! its always the good engines people want to part with. Its never, "Got a mk1 MDS40, Flash 35, or a Merco 35, caked in burnt-on castor?'
Edited By Robin Colbourne on 18/01/2020 14:16:15
|Thread: Hi from me and my KK Fairey Gannet build|
How about using the mechanics of an electric contra-rotating helicopter to drive the propellers? A walk around any decent sized car boot sale should yield at least one.
If you want to see a complicated model, check out this control line Gannet from 1963. Two engines and 24 bearings in the gearbox: Bruce Randle's 1963 control line Fairey Gannet
Edited By Robin Colbourne on 17/01/2020 20:10:20
|Thread: Trendsetters and Iconic Models over the Years?|
Both good calls Dave! No shortage of either in their time.
Wingcoax, I guess it depends where you are. I've only ever seen/flown one DB Mascot, but they may well be the default trainer in some clubs.
Edited By Robin Colbourne on 17/01/2020 12:11:03
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