Member postings for Shaun Walsh

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

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.

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.

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!

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!

If you fit anything bigger than an 8" prop it would be a very effective circular saw

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.

Just run up the motor on the Polaris Lander.
3S battery 8x6 prop as supplied
150Watts
14A
9000RPM
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.


Description:
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

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

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

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!

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?

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.

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.

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.

Perhaps it's an attempt to justify £80 for delivery

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!

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.

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

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.

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%.