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Member postings for Stephen Smith 14

Here is a list of all the postings Stephen Smith 14 has made in our forums. Click on a thread name to jump to the thread.

Thread: New gas engine break in
07/05/2020 18:31:10

A good low Ash 2 stroke is Millers KR2T

07/05/2020 18:26:46

Also modern castrol r is only suitable as a 4 stroke oil if your looking for a modern castor 2 stroke oil take a look at castrol 747

07/05/2020 18:23:02

Back in the 70s castrol r was a mineral based oil with castor adatives if you looking at modern castrol r you will see its an entirely different oil. This info came to us via a sponser that was and still is a major oil blending company so I'm sure they know whats what.

Thread: Ebay sellers...
06/05/2020 19:03:22

Was going to make an offer for this but £20 postage means I could only make an offer of minus £18.

Thread: New gas engine break in
06/05/2020 18:55:22

I would never use mineral oil things have moved on. Back in the dim and distant past (late 70s early 80s) I was involved with racing tz250s and 350s which we ran with mineral oils manly castrol R.

Move forward many years and my son followed my lead and went racing, now I know how my perant felt. He raced post classics for 3 years of his racing career this was on a tz350, this was capable of higher reves than the original bikes due to advances in ignition, expansion chambers, porting and combustion chamber. We ran purely synthetic oils in much smaller amounts as little as 50-1 as apposed to 20-1we ran when using minaral but at least doubled ring piston liner and crank life, admitted we ran nicasiled bores as apposed to early hard chrome but the increased life was about the same on all components.

Thread: New boiler installation
05/05/2020 22:20:45
Posted by Wingman on 05/05/2020 10:35:15:

As an aside, I've tried all those Fernox type cleaners and preservatives but the best by far is ethylene glycol car antifreeze (Bluecol etc.) dozed at 1 litre per radiator (regardless of radiator size). Car antifreeze is good for much higher temperatures than a central heating system can get to and is good for steel, iron, aluminium, copper, brass and magnesium so any metal in a central heating system won't react with it. I find that after 2 years the water is still clear and I now leave it for 5 years before draining and refilling. My system, including the boiler, is 25 years old, one of the radiators and the hot water tank are original and the system is still silent in operation (and it's an 'open system).

Some of what you say is incorrect blue antifreeze losses its ability to prevent corrosion quickly this is why it's changed every 2 years it will quickly start to degrade aluminium, red antifreeze corrodes iron and steel, modern cast iron engine blocks are coated internally, but red won't attack aluminium, it also has a longer service life of 5 years.

I'm not a plumber but do understand what automotive antifreeze does what and when it should be used 5 years seems a little risky to leave it in for and as central heating specific antifreeze is available I would always recommend using that instead of one not specific to requirements

Thread: New gas engine break in
05/05/2020 21:49:39
Posted by Jason Channing on 05/05/2020 15:24:27:

Never yet had an engine where the fuel explodes ?????????????,

Or me, in mine there all a controlled burn.

Thread: Cheap Chinese Laser Cutter
28/04/2020 19:01:29

Just don't understand these diode lasers when they take 10 passes to cut 1/32 ply and are only really usfull for drawing out onto wood to cut with a knife or saw, my k40 cuts 1/8th ply without issue and with £100 back of the seller because of two minor issues it cost me under £200.

Thread: What are my options?
22/04/2020 19:53:42

I will continue to buy from China if necessary for the item I want, I use Czechoslovakian radio currently building a British kit, have two British kits in the loft and three American kits (by kits I mean kits not artf) I have some hitec servos not sure where there made but don't think it's Chinese, have os and Irvine engines.

On the other hand I have Chinese foamys and balsa artfs, piles of Chinese servos, motors, escs, engines and verious other stuff from them, not only modeling.

Please also remember they do a great line in wild bat meat, yummy.

Thread: Aerial positioning
14/04/2020 18:57:27
Posted by Dickw on 14/04/2020 16:29:33:

As an example of "how not to do it" have a look at the install for my 2m electric glider. The model is all carbon fibre (wing, fuselage, tailplane) apart from an approximately 6" section of the fuselage where the receiver sits which is glass or kevlar.

You can see the active portion of one aerial (yellow sleeved) almost taped to the side of the Rx. The other aerial is on the other side of the Rx with the slope reversed in the nearest I can get to a 90 degree separation!

I would never suggest anyone tries an install like this, but I have flown up to the safe limits of my elderly vision with a slim 2m glider - approx 500m LOS - without any problems.

It probably shouldn't work, but I have 3 models like this and they are all OK. If you are unsure of your receiver installation just make sure you do a really good range check with the model turned to all angles. Telemetry helps give confidence of course.

Dick

tight install.jpg

Quality radio gear obviously helps

Thread: Which classifieds do you use?
09/04/2020 19:13:38

Loads on facebook

Thread: Liability of Open Source radios
08/04/2020 22:30:13

They could ban all transmitters to be sure and just fly free flight

Thread: Cheap Chinese Laser Cutter
08/04/2020 22:23:50

Thanks Barrie will see if I can get there head once the world returns to some normallity but they don't list any parts on there Web site.

I see they supply the same poor exhaust fan, I found one on thingyverse which uses the same motor with a different housing printed in several parts, seals much better on the back of the machine and the difference in performance is night and day.

08/04/2020 12:39:47

Barrie thats a really nice head on your K40 what make is it and where did you get it from would like one on mine.

Thread: Benefits of the lockdown
03/04/2020 20:46:45

8 minutes to work instead of 45

Thread: Show Us Your 3D Prints
03/04/2020 20:44:09

Also busy printing face mask frames in between working

Thread: IC Engine Bearings...
21/03/2020 22:05:01
Posted by Martin Harris on 20/03/2020 21:25:19:

If it's so simple, perhaps you'd like to explain where I've gone wrong Stephen?

P.S. It's just occurred to me that if you happen to bolt a pusher prop onto the engine, then the thrust WILL be carried by the front bearing!

Edited By Martin Harris on 20/03/2020 21:35:17

The words educate and pork spring to mind

20/03/2020 20:49:39

Rather you than me Jon trying to explain this, simple concept but it looks to me like your banging your head on a brick wall. What's so difficult to understand?

Thread: Is there a new breed of servo ?
18/03/2020 12:19:26

Have you tried corona servos

Thread: Has Your Club Made Any Decisions Regarding The Coronavirus?
14/03/2020 19:57:52

A previous scare multipled by the media

https://www.theguardian.com/world/2008/jul/21/pandemic.warning

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