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Everything posted by Ray_W

  1. Cliff, a wonderful little build. Where did you get the 4 litre tin of Humbrol enamel? Ray
  2. Peter, Very nice indeed. I enjoyed following your build and the attention to detail. Ray
  3. Hi John, I downloaded one onto my Kindle from Amazon. Ray
  4. Tamiya has still not been exceeded in terms of performance of course dependent on what you want to achieve - drying time, price, range, availability, ease of gloss finishing , toxicity, smell, strength, and the list goes on. There was a recent discussion along a similar vein regarding Tamiya here: There are also many, many other threads on the subject. For example: https://www.britmodeller.com/forums/index.php?/topic/235045118-paints-for-a-new-airbrush/ Hopefully some of the specialist auto modellers' recommendations come in. Importantly, there
  5. Good combination. I agree with @franky boy and @Phantom726 advice. I have never had trouble with using GX-100 or GX-112 (the UV cut version) thinned with Mr Color Leveling Thinner as a coating before decalling and as a top coat over decals and that is with with multiple decal and kit brands. All my builds on BM are done that way. I do allow plenty of drying time between stages - minimum 12 hours before decals and then a minimum 12 hours before top coat. Shorter times are possible just that I see no reason to rush. I love the silky smooth finish and you can build to the gloss level
  6. @Ghostbase Michael, Thoughtful response. Ray
  7. The current discussion on the Lancaster BII performance reminded me of a joke told to me by an ex-RAAF pilot who flew heavies in WW2. Please bear with me if I give you some context. Being the young know it all Sales Executive for our manufacturing operation, I was attending a trade exhibition and went on to the stand of one of our major customers. This older gentlemen came up and starting talking to me. I thought, what a brilliant salesman for their company and I wondered what his position was, maybe a State Rep or Branch Manager. I asked the innocent question "What is your role?".
  8. If you have not already seen it and have an interest in this subject, which I'm sure we all do, this is worth watching. The interviews with Stanley Hooker are gold: https://www.youtube.com/watch?v=by4lH2whhjk Ray
  9. I suppose I should of been clearer seeing there can be confusion with the author's name. Will edit to read "a very interesting paper with much reference to Air Marshall Arthur Harris's thoughts on the matter." Ray
  10. Graham have you read this paper by Stephen J. Harris "The Lancaster and Halifax in Canadian Service"? Very interesting paper with much reference to Air Marshall Arthur Harris's thoughts on the matter. https://scholars.wlu.ca/cgi/viewcontent.cgi?article=1432&context=cmh Ray
  11. Thanks for this information. It confirms what I suspected from looking at the engine performance characteristics. My goodness, you fly the BBMF Lancaster. Ray
  12. Yes semantics. It was still a two-stage supercharger. The difference being that with the Bristol 138 you needed to add a separate blower housing with ductwork to a very bulky air-to-air heat exchanger between the stages. The brilliance of the Merlin 2-stage supercharger was a very compact package using water cooling between the first and second stage integral to the supercharger housing itself before the cooling water left to provide some additional cooling as an aftercooler for the air before it entered the carburettors like so: Source: apologies some where from the internet a
  13. I really like the work that is being done by Calum Douglas, challenging some of the previous perceptions with regard to WWII engine design and development using his fresh outlook, deep technical understanding and access to newly sourced materials. This video is really worth checking out if you have not seen it already. https://www.youtube.com/watch?v=ImEpk1s-Vk0 It is slow to start because it is a webinar made during our current COVID restrictions. I think you will find it fascinating. Ray
  14. Moving away from the OP, but just thinking about this, did Bristol develop a 2-stage supercharger? 2-speed yes. 2-stage I think not. Air cooled engines do have the problem of the size of an air cooled intercooler something which RR did achieve having the benefit of water cooling and a smaller intercooler package. With this limitation I can see why Bristol had the interest in turbocharging.
  15. @JackG Thanks Jack for the detailed reply. Checked out the LHS and their Dragon stocks nicely cuts out the North Africa period with the Ausf.E and the Ausf.K kits. I'll check the other LHS tomorrow. They usually carry RFM and Academy. I might give myself a little more time. Discovered today there is a Panzer III STGB starting in February. Have to do it then. Ray
  16. Hi Dave, I have used AK Real Color with their purpose designed thinner and they were brilliant. Even though they are an acrylic does not mean that water or an alcohol based X-20A is a suitable solvent. In simple terms, paints have 3 components - pigment, binder and solvent. The binder in this case is acrylic and there a range of acrylic binders with different performance characteristics including, importantly, which solvent to be used. It does not mean washes out in water. Although we have come to expect it and herein lies the problem. I have got into the habit of ref
  17. I think unlikely. I have not read anything that shows this was a limitation of sleeve valves as also evident in the ongoing performance development of the Hercules and then the Centaurus. Rolls Royce even went to sleeve valves with the Eagle although this did not go far with the advent of the turbojet. I have read the the same but this may be unfair. Probably worthy of more up to date research. Possibly RR was the beneficiary of Stanley Hooker's involvement or the large impetus on fighter engine design to extract the most out of the Merlin/Griffon across a broad range range of
  18. More info and sorry for the new posts each time as it comes together. I have now plotted the peak performance of the Merlin XX on supercharger "M" Gear and "S" Gear against the Hercules data. You can see that even though the Hercules was a "Hercules" down low, the Merlin XX was better set up for higher altitude work. In fact, even though it generated less BHP down low once it got high it started to outshine the Hercules. A full plot, if available, could show the cross-over point. I estimate some where around the 16,000 - 17,000 feet. I suspect for down low and with take-o
  19. Further to my earlier post, I have found this Hercules VI performance curve: Source: https://www.enginehistory.org/Turbochargers/Superchargers/BristolSuperchargers.shtml Note that at 20,000 feet the Hercules VI bhp is given at just under 950. Up to 1000 feet you have those very high bhp numbers then dropping off with engagement of the supercharger speeds on the "M" Gear (and lowered to cruise boost) and then the "S" Gear. The superchargers take significant horsepower, but this more than compensates for the loss of horsepower associated with a normally aspirated
  20. There has been a number of times this topic has come up with no clear answer. I think realistically we need to break down the problem and I would suggest in the first instance focus on the Lancaster BI and BII and look at engine performance on these aircraft before confusing it with other issues or the Halifax performance anomaly. That can come later. I have yet to see performance curves for the Merlin XX or Hercules VI, that being brake horse power (BHP) plotted against altitude. I would be very interested to see when the superchargers were at their best (yes there a
  21. Thanks for coming back on this. I had come to a similar conclusion. Now to see if the LHS has one in stock. I can't vouch for its accuracy, but the recent Academy Ausf.J also looks like a nice kit. Might be another option. https://www.scalemates.com/kits/academy-13531-panzer-iii-ausf-j--1262484 Ray
  22. Thanks Ozzy, They're ok, but I need a lot more practice better blending those oils. It is the first time I tried the technique of oils over acrylics in figure painting and enjoyed it immensely. Seem like the last time I was figure painting was a long time ago in a galaxy far, far away. Yes, back in the day when Tamiya acrylics brushed beautifully straight out of the jar. Back when never the word "retarder" was mentioned - just brush, tap water and paint. Ray
  23. Thank you Jack @JackG within the next couple of days I hope to raid the local hobby shops here and hopefully pick up something suitable. Thanks for linking to @AgentG. Ray
  24. Now you mention it, I can read it. The first three letters did look like "MIK" to me. Even the name MISCHIEF would be easy to do with a sharp permanent color pencil. Dora Wings' artwork on Scalemates. https://www.scalemates.com/kits/dora-wings-dw48034-republic-p-43b-lancer--1290504 Ray
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