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Member postings for John Stainforth

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

Thread: saito 82b consumption
02/04/2019 03:50:08

Saito engines are very economical once properly tuned, but they drink fuel before then. The factory setting of the low-speed needle is very rich. Usually it takes about an hour of running or a gallon of fuel to get a Saito running right.

Thread: NEW POLL - Does your club have a safety officer, or is the emphasis on individual members to each be their own safety officer?
22/03/2019 10:25:02

David,

I am a little bit amazed that you are not too fond of safety officers - particularly given your position of influence.

John

Thread: Saito r33
17/03/2019 12:39:12

You could try Horizon Hobby, the distributors in the US in Champagne Illinois. They have provided me with excellent service of Saito engines on several occasions.

Thread: Weston or Wings & Wheels
17/03/2019 12:35:03

I go to both but prefer Weston - for all the reasons Whittaker gives in his latest review.

Thread: Forum members' new models: Let's see them.
27/02/2019 01:44:05

Jon I like both versions equally and fly them in the US where my club has a vast concrete runway, so the hot landing speed of the 50 size is no problem at all. (In the UK I think one might tear the U/C on grass strips.) The 50 is absolutely one of my favorite models particularly since it is not much affected by wind.

It's interesting how modest difference size of the two planes has such an effect on their flying characteristics - I suppose it's a good example of a Reynolds number effect.

26/02/2019 21:17:10

I have the same plane in the US (with a Saito 100) and also a Revolver 50 (with OS55AX). Both are well constructed and fly beautifully. The 50 size actually seems the hotter model and takes a long time to slow down on a hard surface once it has landed (I use ailerons in spoileron mode to help slow it down.)

Thread: UK supplier of balsa in METRIC thicknesses?
11/02/2019 10:01:52

I think there are two issues here - the convention to which the wood is cut, and then the tolerance of the cutting.

Thread: How can I reverse a plan to build two wing halves
09/02/2019 12:59:58

Distortions caused by copiers are usually a result not of machine imprecision but of incorrect printer settings. One way to check for distortions is to draw a large circle on the plan with compasses, before copying, including marking the centre of the circle. It is then pretty obvious to the eye whether that is distorted or not after copying. Then one can draw another circle on the copy to see what correction factors have to be applied to the printer.

Thread: Drilling ply/balsa
04/02/2019 11:35:28

As a complete aside, I'm wondering what a 1/4" balsa, 1/4" ply, 1/4" balsa sandwich is being used for. The other way round would be much stronger, and then you could go perhaps go with thinner ply - like the full-size Mosquito monocoque fuselage, which was 1/16" ply 3/8" balsa 1/16" ply.

04/02/2019 04:13:23

It depends on the quality of the balsa and ply etc. Best to make a dummy out of scrap and try it various ways.

Thread: World Gone Mad..........
21/01/2019 22:01:58

Philip won't be sorry to see that smashed mirror go, because sorry is no longer in his vocabulary.

21/01/2019 21:55:03

We should not tar the whole world with the same brush, just because we've gone half mad.

Thread: New Drone/Aerodrome Regulations - Is your club at risk?
20/01/2019 19:49:10
Posted by Steve J on 20/01/2019 12:07:22:
Posted by John Stainforth on 20/01/2019 12:04:22:

I, for one, am for the new regulations.

I, for one, think that they are completely pointless and are simply the government pandering to BALPA.

Steve

Oh! Shock! Horror! That we pilots of little model planes should pander to the wishes of professional pilots of full-size planes who have daily responsible for thousands of peoples lives!

20/01/2019 12:04:22

I, for one, am for the new regulations.

Thread: Seagull Mosquito Laser build
18/01/2019 00:45:42

...so for a 1/8th scale Mossie (with wingspan around 80 or 81" the spinners should be about/at least 4" or 10 cm in diameter.

Edited By John Stainforth on 18/01/2019 00:46:59

17/01/2019 21:56:51

I pulled up a blueprint from the internet and approximately scaling suggests the spinner diameter of the fullsize is about 33"!

Thread: Controls reversed when copying.
16/01/2019 16:23:39

There seems to be some disagreeing here for the sake of disagreeing, when all I see in the above discussion is agreement that there is no single convention: that the manufacturers set their gear to a more or less arbitrary conventions, which they call "normal", so that whenever we place servos in ways that do not comply with these we have to set "reverse" in our TX's.

16/01/2019 12:20:47

I think the radio manufacturers set up their gear so that a "normal" servo setting corresponds to (what they regard) is a "normal" mounting orientation of the servo. When we mount a servo in the opposite direction we then have to set "reverse" on our TX's. So the manufacturers regard this as an idiosyncrasy of a particular model/servo set up and not something worth copying to another model, which may have the servos mounted in the conventional orientations.

Thread: ASP 61FS Just Stopped !!
12/01/2019 11:22:20

Jon,

Thanks for info.

12/01/2019 00:09:13

Is it possible that the engine has been forcibly turned over when it has been hydraulically locked? That might lead to such fatigue.

Jon, could a high nitromethane content really lead to that kind of fatigue?

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