Here is a list of all the postings Martyn K has made in our forums. Click on a thread name to jump to the thread.
|Thread: Scammer warning|
Not trying to hijack this thread, but I just received an enquiry from Henry Ford (possibly a different one) on the UKCAA Website
The IP Address is Nigerian (which rings alarm bells) but the UK phone number quoted is a Fake..
+44 7700 900077, Mobile Phone Number, UK
+44 7700 900077 is a fake mobile telephone number. Avoid unintentionally using real phone numbers by selecting from our range of fictitious telephone numbers. You can find other random mobile phone numbers in the list below. Please note that all mobile numbers generated by Fake Number, including +44 7700 900077, are fake so won't work for phone number verification.
If you have been contacted by +44 7700 900077, you ought to be extremely cautious about answering their calls. The caller ID has almost certainly been spoofed with an officially reserved mobile number, either as part of an elaborate prank or worse yet, a malicious scam. Be vigilant and don't let fraudsters con you out of your money. Don't accept any calls or text messages from +44 7700 900077!
I probably wont bother ringing back..
Edited By Martyn K on 22/05/2018 15:25:22
Edited By Martyn K on 22/05/2018 15:25:56
|Thread: UKCAA @ Watford 2018|
Most fly 60 sized models - early ones about 60" span - later ones about 68" span. I guess the 150 is 1.5m span so just slightly smaller than norm. The engine may need a slightly more coarse pitched prop - see if it will turn a 11x9 without choking..
My favourite model at the moment is my 40 sized Mystic at about 55". That has more than enough grunt to do large manoeuvres to put in on par with the larger models. Thinking of scaling it up to 60 sized now for a piped 60/61.
Forgot to mention
We held a two round contest to UKCAA Pick7 rules, judged by Martin McIntosh. 6 members took part
1st. Simon Ford
2nd Shelly Redworth
3rd James Ford
As you all know, its been a bit of a washout earlier this year. Our first event had to be postponed (until July) due to local flooding, the second at Loughborough rained all day but 10 of us still manged to turn up and fly all day but low cloud and lousy lighting limited photography.
Spring finally arrived with our annual visit to Watford Wayfarers MFC. A fantastic days flying with fantastic weather and fantastic company.
Our next event is a contest orientated day at TRENT 20 on the 3rd June.
|Thread: Warbird Replica Spitfire MKix|
That looks very nice Martian. What power plant did you use? Sorry if I have missed it somewhere.
Has it flown yet?
|Thread: Forum members' new models: Let's see them.|
That's nice Martian. How big and is it a kit, artf. plan and how big?
|Thread: See-through OS wankel rotary engine running slow-motion|
Brilliant - thanks
|Thread: Reading the wrong frequency...??|
It may be that the bandwidth of the Scanner is incorrect. If its set to WBFM, it could settle anywhere within the slope of the detector. The spacing between 35MHz channels is 10kHz but the transmitted bandwidth will be less than that
|Thread: Paint... Acrylics for spraying - advice please|
I have never heard of Acrylic thinners, I must investigate. 15psi is quite low pressure, much lower than I am used to so something else to try
Probably not a bad idea Don, but doors don't have a multitude of scale detail.
My worry is regarding the mix of screenwash and check that I have actually got me facts correct... I don't want to ruin the model or have the paint bubble or craze because I misread something
I need to paint a couple of models and I would like to try some Acrylic paints.
I read in a thread here somewhere that B&Q will mix up Valspar paint to match a full size colour. However, I need to prime a model or two (1/4 scale glider and the Chippie) with White undercoat/Primer first.
In that thread it was suggested that the paint can be sprayed (using an automotive spray gun) with the paint thinned with screenwash.
I have bought a litre of Valspar Acrylic white primer/undercoat and 5l of screenwash. Before I go any further can anyone provide me with a good mic recommendation and any gotchas I need to be aware of? I really don't want to screw this up..
Edited By Martyn K on 15/05/2018 13:34:34
|Thread: Peterf's 1/4 scale Falcon Models Tiger Moth|
Absolutely fantastic. Well done Peter..
|Thread: Martyn's Dalotel|
Martin, there is a bit of final fettling on the rudder before it gets covered but its about right.It does have a clight bevel/curve on the rudder, the fin edge is square
A little bit more progress. Having spent quite a bit of time trying to sort out the undercarriage doors I think I have finally succeeded to get it almost right.. The problem is that the doors need to open and maintain alignment with the the oleo. Sounds straightforward except my retract units are not angles forward, but the legs are.. Using the same mechanism that was used on the full size, the doors sit higher on the wheel when retracted, but when lowered they move downwards and outwards - if that makes sense.
5 attempts to get the left leg lined up the right leg was right first time. It means that the hinges for the door need to be raked which means that they are very slightly skewed inwards when extended, but that is a compromise I can live with..
The video show the operation but basically, the link pin is set so that the door is pulled closed when retracted, but as it extends, because the door hinge is further out that the leg hinge, it pushes the door downwards and outwards.. Really pleased with that.
Ailerons have been built and I thought a couple of bare bones shots would be worthwhile..
The angled wingtips have also been finished. Today I have wired in the aileron servo extension leads and sheeted the bottom of the wing.
Quite pleased with this..
More to come
|Thread: Better late than never Chippy|
Very nice indeed
|Thread: Balsa USA Sopwith Pup 1/6 scale|
Brilliant.. Nice to see a successful maiden. Looks lovely in the air as well
|Thread: Peterf's 1/4 scale Falcon Models Tiger Moth|
Well done.. Take care with that maiden.
|Thread: Classic Aerobatic Model Photo Thread|
It has been rather quiet. My only contribution this year has been my Mama Mia. Seems to fly quite well despite its size..
|Thread: Martyn's Dalotel|
Progress update.. I am spending rather a lot of time on this and don't seem to be getting very far. Working on two areas, the cowl and the undercarriage and then doing bits like adding cap strips while I have a few spare minutes.
There is only one accurate 3v that I can find and this does not appear to be too accurate(!) The cowl shape is wrong - it appears to be too narrow compared with the few photos I can find.
As I mentioned, the engine will be inverted. A quick test fit and the tank was still too high - so this has been lowered again. It will need a small cut-out in the wing to accommodate - that. I will need about 6mm removing from the upper wing centre section. Hey ho..
Anyway. The cowl. Basically built as per plan but taking care trying to get the shape right - especially around the rear curves or straights. I still haven't decided which is really correct.
All still a bit rough - WIP
The original was a Glass Fibre cowl and sat on top of the basic fuselage shape. the drop is intended. I'll glass the cowl in 18gm cloth - it will add a bit of resilience. I said it was still a bit rough...
Surprisingly, the cylinder head doesn't protrude too far. The bottom part is (or will be removable) for access. The FS exhaust with exit at the rear opening. I'll need to get a new manifold for this. There is a vent from under the cowl at the rear which will be expanded. The inner side of the cowl will have a dummy radiator fitted both halves. This will be useful for deflecting the air to the cylinder head I hope.
The undercarriage has been fun as well. Using HK retracts, I am trying to replicate the some look as the prototype. I was originally intending on using oleos but the ones I bought were too big. However the stanchions were the correct size. Heat shrink represents the rubber gaiters.
The leg is fastened to the retract unit using a stub of 4mm piano wire. To prevent it rotating in the stanchion, the leg was slotted (using a diamond cutting wheel on the Dremel) and pinned through using 16swg piano wire and then all slow epoxied into place. The little grub screws supplied stripped the aluminium thread the first time I tried to tighten them. You can see the pin holes if you look closely. Not much suspension but the tyres (are slightly oversize) but VERY soft. That is the springing.. I'll need to land this carefully.
One challenge I have is to fabricate the doors so they open outwards at an angle when the undercarriage is lowered but close up and move upwards when the undercarriage is retracted. Its all about trigonometry. I just have to work out the angles and linkage lengths.
The wheel well bay has a 1/32 ply reinforcement ring on the inside
The bay itself has been doped and sealed and a coat of fuel proof grey paint added. I am not adding any wheel well walls.
That's about if at the moment. The aileron fitting is the next airframe bit. Doing Trigonometry is the next thinking carefully bit.
More to come but this is slow. May get it finished by Christmas at this rate.
Edited By Martyn K on 24/04/2018 15:26:14
|Thread: Quarter Sawn Balsa|
A photo of what Quarter grain wood looks like..
Both of the lower sheets (1/32 balsa) is quarter grain although the top half (in the photo) is cut towards the edge of the quarter area. The bottom part is beautiful and demonstrates exactly what you need to look for. The very long cross grain shows it was at 90 degrees to the growth rings in the tree. Quarter grain is not ideal for sheeting wings though as it is rather stiff and does not bend easily to the profile of the wing section.
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