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Member postings for Shaun Walsh

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

Thread: GC3536 850KV replacement
30/11/2020 14:23:27

Try 4-Max

3535-870 motor

Edited By Shaun Walsh on 30/11/2020 14:24:46

Edited By Shaun Walsh on 30/11/2020 14:26:46

Thread: Power for Graupner Cirrus
29/11/2020 10:56:43
Posted by Tom Gaskin 1 on 29/11/2020 10:31:55:

You're right Shaun, I had a Cirrus in the '70s with the Graupner overwing power pod. I stuck an old Frog 150 in it for some relaxing self-launching flight.

While a motor in the nose would be more efficient, I think it would be a shame to cut the nose off.


The power pod was designed originally for an OS10 glow engine and comes with aluminium pod sides, ply engine mount and plastic top and bottom mouldings.

I substituted a Hobbyking SK3 2836-1500 driving an 8 inch folding pusher prop running on a 30 amp speed controller and 2200 3S battery.

29/11/2020 09:16:07

Seems a shame to cut the nose off a vintage glider. I believe the Cirrus used the same over wing power pod as the Cumulus originally which has the advantage of requiring no mods to the fuselage. Take a look at my "Cumulus Resurrection" thread.

Thread: Ebay sellers...
28/11/2020 16:57:11
Posted by Doc Marten on 28/11/2020 14:21:08:
Posted by Eric Robson on 28/11/2020 13:10:45:

Not only what he is asking but getting for some of them .I should have bought up the records in charity shops when they were on sale for 50p.

You should have, vinyl is very collectable and brings good prices, £20 for a good condition album is quite average and that's not for a rare one (new vinyl costs that ), add factors like coloured vinyl, controversial covers, limited editions and a rare label and the price rockets.

He does seem to be asking top end prices for the vinyl but not hugely unreasonable ones. You're right, vinyl has staged a massive comeback in recent year. It's not just the records either, turntables are in big demand too. About 10 years ago I was looking to upgrade my turntable and picked up a very nice Rotel RP855 for £45, good ones are now going for £200+, not bad for 1980's technology. To buy something equivalent new like a Rega Planar 3 would set you back £650!

Thread: Banggood Polaris Lander
27/11/2020 17:54:21

Further update

None of the servos appear to be "attached" to the fuselage, they all move when pushed/pulled. Also the control clevises are made of string cheese, one broke as I was removing it to reattach the rudder.

I despair, for just £10 more (if that) this could have been built to a satisfactory standard, as it is it wouldn't survive its maiden flight.

However, my HK Skipper flies well off a wet strip so I will persevere but no way is this a PNP model unless it means Plug and Pray!

27/11/2020 15:37:03
Posted by Piers Bowlan on 27/11/2020 15:04:21:

Shaun, what is maximum dia. prop you can fit without it fouling the top of the fuselage. If a 10x6 or (10x8) will fit how many Watts will your motor pull with your 3S battery? Alternatively try a three bladed prop if a 10in prop won't fit - simpler to rectify and cheaper than buying a new motor? Might even work! laugh

If you fit anything bigger than an 8" prop it would be a very effective circular saw no

Will try a Master Airscrew 8x6x3 but the numbers in eCalc don't look too promising, 200W approx on a 1.05Kg model, I would normally be looking for around 300W on a model of that weight , my modified Riot has over 400W available in a 1.5Kg model. But you are right, try the cheapest option first.

27/11/2020 14:47:30

Just run up the motor on the Polaris Lander.
3S battery 8x6 prop as supplied
Clearly not the 1300KV motor as advertised.
Have emailed them requesting either a motor as advertised or a partial refund to purchase a new motor myself.

Brand: RC Lander
Model: Polaris Seaplane
Wingspan: 864mm
Length: 1168mm
Flying Weight: 1050g
Product Weight: About 6kg
Servo: 9gx3
ESC: 40A
Motor: 3632 1300KV brushless
Propeller: 8x4 propeller Click here
Battery: 3S 2200mah or 2600mah T plug(Not included) Click here
Control System: 4CH transmitter and receiver (Not included) Click here
Balance Charger: Not included Click here

25/11/2020 17:03:36
Posted by Bob Cotsford on 25/11/2020 15:53:31:

Shaun, I think the idea of the wing joiner is that it is only meant to maintain the dihedral and is free floating through the fuselage with the wing roots locking into the fuselage socket to tie things together. I don't think there needs to be a close fitting sleeve through there.

My Skipper XL came with something like a 1000kv motor which I swapped for a 1400kv Turnigy one to use on 3S.

Quite possibly Bob, but I like to ensure everything is tied together LOL!

25/11/2020 15:37:06
Posted by Toni Reynaud on 25/11/2020 14:45:46:

Using a hot wire to cut holes to mount the servos in the wing is fairly easy (if you have cut foam before and have the gear to hand). To run the wires, just cut a slot from servo to fus entry point using a sharp blade and a straight-edge and push the wires in edge on.

Think I will try the CF rod method first, if that isn't satisfactory I will go the twin servo route.

25/11/2020 15:36:16

More frustration, dry assembled the wings and the wing joining rods are 4mm diameter and fit into the wings fine, however, the holes in the fuselage are 8mm diameter which means that there is no contact/support offered to the fuselage by the joining rods, relies solely upon the glue join between wing and fuselage.

Now need to look for some suitably sized tubing to fit in the fuselage holes. VERY ANNOYING!


25/11/2020 11:14:16

Two thoughts on how to resolve the aileron problem.

1) Fit twin servos in the wings. Which would mean cutting holes in the wings, running the servo leads through to the fuselage and fitting covers.

2) Use carbon fibre rod instead of wire pushrods. I have tried some 1.5mm CF rod in place of the 1.5mm wire pushrods and they slide freely, probably because they are more flexible and can cope with the sharp bend. If I go this route I shall epoxy the clevises to the end and slide some CF tube over the rod between the fuselage and the aileron to stiffen it.

Any other suggestions?

25/11/2020 10:30:06

Started to put this together and more frustration, The rudder dropped off but then I would rather it fell off now than in flight, easily fixed with a few cyano hinges. I ran the servos on the servo tester, the rudder was fine but the aileron servo really struggled to the point where the servo was moving not the control rods. Took out the servo and found that the pushrod angle was so acute that the rods were really stiff in the tubes to the point where I couldn't get one of the rods back in. Will need to think about the best way to resolve the problem.

Thread: Spektrum AR 620 RXs
24/11/2020 17:54:27

I bought one not long after they came out, it's on the side of a Hobbyking Hummer, exposed to spray from the wheels It's often wet when I land, never missed a beat.

Thread: How do you cut yours?
24/11/2020 13:40:16

I don't like cutting out the fiddly bits either so I either build from a full kit or a short kit. There are some places that will laser cut parts for you if your chosen model is only available as a plan.

Thread: Banggood Polaris Lander
24/11/2020 10:20:34
Posted by Piers Bowlan on 24/11/2020 09:59:52:

Sounds like you are on the case Shaun. yes Good luck.

But a 1kg model with 5kg of packaging!!! I don't think so. smile d

Edited By Piers Bowlan on 24/11/2020 10:04:06

Perhaps it's an attempt to justify £80 for deliverywink 2

24/11/2020 09:47:43

Thanks for the replies, a couple of further bits of information.

I will check the KV value using a tachometer when I get around to building the model.

When I bought the model it was free postage, wouldn't pay the £80 they are now asking.

Will check thrust available and current draw with 2 and 3 blade props although eCalc results show that a 1300KV motor with a 3 blade 8x6 prop gives the best results on a 3S battery.

If it is a 1000KV motor and it doesn't produce enough thrust I will just swap it out for a higher KV motor.

I think the product weight includes all the packaging, the model certainly isn't 6Kg!

24/11/2020 07:42:38

I have a Hobbyking Skipper which is great for flying when the field is wet and puddled but wanted something a bit bigger and easier to see so I ordered a PNP Polaris Lander from Banggood, basically a Skipper XL which Hobbyking has now discontinued

.Polaris Lander PNP

The web site says it has a 1300KV motor, requires a 3S battery and shows it with a 3 blade prop.

I received the model on the date stated with no duty charges that I know of so far, great. However, the little bit of information that came with it says that the motor is 1000KV which would require a 4S battery, there are no markings on the motor indicating the KV value. It was also supplied with a 2 blade prop. Have raised a ticket with Banggood. Don't want to return it so I hope its a 1300KV motor or, failing that, that Banggood can send a replacement with the advertised 1300KV rating.

Thread: Haven't any people on YouTube heard of grease?
23/11/2020 19:34:40

Grease is the word, John Travolta and Olivia Newton John would both agree with you.

Thread: Spekky repair?
21/11/2020 12:25:03

Al's hobbies, guy who repairs Spektrum stuff works there on Mondays and Tuesdays. Sent my DX6 off for a replacement gimbal as one pot had failed, sent on Thursday, arrived Friday, fixed Monday, back Tuesday, reasonable cost.

Thread: Sign of the times - funnies
19/11/2020 18:44:57
Posted by Gary Manuel on 19/11/2020 18:31:44:


1. The letter 'U' will be reinstated in words such as 'colour,' 'favour,' 'labour' and 'neighbour.' Likewise, you will learn to spell 'doughnut' without skipping half the letters, and the suffix '-ize' will be replaced by the suffix '-ise.' Generally, you will be expected to raise your vocabulary to acceptable levels. (look up 'vocabulary'.
2. Using the same twenty-seven words interspersed with filler noises such as 'like' and 'you know' is an unacceptable and inefficient form of communication. There is no such thing as U.S. English. We will let Microsoft know on your behalf. The Microsoft spell-checker will be adjusted to take into account the reinstated letter 'u' and the elimination of '-ize.'
3. July 4th will no longer be celebrated as a holiday.
4. You will learn to resolve personal issues without using guns, lawyers or therapists. The fact that you need so many lawyers and therapists shows that you're not quite ready to be independent. Guns should only be used for shooting grouse. If you can't sort things out without suing someone or speaking to a therapist, then you're not ready to shoot grouse.
5. Therefore, you will no longer be allowed to own or carry anything more dangerous than a vegetable peeler. Although a permit will be required if you wish to carry a vegetable peeler in public.
6. All intersections will be replaced with roundabouts, and you will start driving on the left side with immediate effect. At the same time, you will go metric with immediate effect and without the benefit of conversion tables. Both roundabouts and metrication will help you understand the British sense of humour.
7. The former USA will adopt UK prices on petrol (which you have been calling gasoline) of roughly $10/US gallon. Get used to it.
8. You will learn to make real chips. Those things you call French fries are not real chips, and those things you insist on calling potato chips are properly called crisps. Real chips are thick cut, fried in animal fat, and dressed not with catsup but with vinegar.
9. The cold, tasteless stuff you insist on calling beer is not actually beer at all. Henceforth, only proper British Bitter will be referred to as beer, and European brews of known and accepted provenance will be referred to as Lager. South African beer is also acceptable, as they are pound for pound the greatest sporting nation on earth and it can only be due to the beer. They are also part of the British Commonwealth - see what it did for them. American brands will be referred to as Near-Frozen Gnat's Urine, so that all can be sold without risk of further confusion.
10. Hollywood will be required occasionally to cast English actors as good guys. Hollywood will also be required to cast English actors to play English characters. Watching Andie MacDowell attempt English dialect in Four Weddings and a Funeral was an experience akin to having one's ears removed with a cheese grater.
11. You will cease playing American football. There is only one kind of proper football; you call it soccer. Those of you brave enough will, in time, be allowed to play rugby (which has some similarities to American football, but does not involve stopping for a rest every twenty seconds or wearing full Kevlar body armour like a bunch of nancies).
12. Further, you will stop playing baseball. It is not reasonable to host an event called the World Series for a game which is not played outside of America. Since only 2.1% of you are aware there is a world beyond your borders, your error is understandable. You will learn cricket, and we will let you face the South Africans first to take the sting out of their deliveries.
13. You must tell us who killed JFK. It's been driving us mad.
14. An internal revenue agent (i.e. tax collector) from Her Majesty's Government will be with you shortly to ensure the acquisition of all monies due (backdated to 1776).
15. Daily Tea Time begins promptly at 4 p.m. with proper cups, with saucers, and never mugs, with high quality biscuits (cookies) and cakes; plus strawberries (with cream) when in season.

God Save the Queen!

I really enjoyed this, just one thing I would take issue with, point 2. There was a recent article in New Scientist on a piece of research which discovered that the use of filler words such as like, um, err etc. actually enhanced comprehension in one to one conversation but diminished perceived authority when used in speeches, presentations etc. I must admit that it surprised me as I get very frustrated with the overuse of filler words. I suppose that by definition just under 50% of the population are of below average intelligence and so need the gap to process what's been said before. I'm sure that, as aeromodellers, we are all like in the um upper 50%.

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