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old timers look here must be 50+ years only

Old 08-05-2021, 04:25 AM
  #9826  
FlyerInOKC
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Its not hard to imagine why he invalided out of the Service with nerves.
Old 08-05-2021, 07:20 AM
  #9827  
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Originally Posted by FlyerInOKC View Post
Its not hard to imagine why he invalided out of the Service with nerves.
Quite so.
Old 08-05-2021, 07:47 AM
  #9828  
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I have just finished assembling an ARTF Acro Wot. It's taken me several years to complete it because I am not much motivated by ARTFs. They are excellent flyers which fly very predictably at both low and high speed. The engine is a brand new Laser 70 four-stroke. Although the c of g is within the specified range I have fitted larger, heavier wheels to it to bring it further forward. I bought it to improve my flying and spent a merry hour fine-tuning the engine in the garden this afternoon. I plan to maiden it this weekend, weather permitting.

I have had two Acro Wots in the past built from the kit. A picture of mine in an RAF scheme accompanies the pictures of the ARTF but I seem to have lost the image of my first one. What I could not get into my head was that Chris Foss designs are very stable at all speeds. I used to bring them in so hot that in both cases I soon lost the undercarriage, then the wing,then the servo plate! Quite a repair job but a lesson learned I hope!

The fuselage of the ARTF is a little wider than the kit-built version.






Old 08-05-2021, 09:15 AM
  #9829  
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You bought an ARTF?! Are you sick?!
Old 08-05-2021, 09:34 AM
  #9830  
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Originally Posted by FlyerInOKC View Post
You bought an ARTF?! Are you sick?!
Just to improve my flying while I finish off the Big Guff and build a Hawker Hurricane over the winter.
Old 08-05-2021, 10:19 AM
  #9831  
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Hey now, I plan to buy an ARF of a 3D plane soon. I aint got time to build one
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Old 08-05-2021, 12:28 PM
  #9832  
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ARF is what Sandy, Little Orphan Annie's dog, says.
Old 08-05-2021, 12:50 PM
  #9833  
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That's why we call them ARTFs.

You guys take the T and chuck it into Boston Harbour!
Old 08-05-2021, 04:05 PM
  #9834  
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Originally Posted by Telemaster Sales UK View Post
That's why we call them ARTFs.

You guys take the T and chuck it into Boston Harbour!
Oh, come now! It's time to get over that...
Old 08-05-2021, 04:30 PM
  #9835  
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Sandy says ARTF when he had a slight lisp.
Old 08-05-2021, 06:52 PM
  #9836  
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Hello everyone, haven’t posted Here since 2016. Looks like you all have been busy. I could tell because I did my due diligence and reread the WHOLE thread from the first page. Took a few days but thoroughly enjoyed it. It was like a series on tv, had to tune in to see what was gonna happen next. I learned that we are all cut from the same cloth, as I have been getting all my ducks in a row to enjoy the rest of my life excluding work from the equation. Considering moving, paying off the house I’m in, should we stay here, just trying to make up my mind in general. Got a lot of good advice from the posts here that will hopefully help with the decision making.Been doing the kit hoarding thing too, should have enough kits and engines to last till I’m 150😂 The last five or six years have been a blur, gonna start taking more time for life instead of work. Health is good, just high cholesterol. Doing the weight loss thing too. As a few have mentioned I’m stuck at 205 and want to be around 190. You all are an inspiration to me after reading what some are accomplishing. Still a young 57 myself. Will keep closer track and check in more often.
Old 08-05-2021, 06:55 PM
  #9837  
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I forgot to mention that this is the best thread here. Still active after all these years!😉👍
Old 08-05-2021, 07:21 PM
  #9838  
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Yeah, and we have an international membership too!
Old 08-05-2021, 11:51 PM
  #9839  
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Years ago I bought a Laser 90 second hand off eBay. I'm quite good with mechanical things and model aeroplane engines in particular but I recall that I enlisted the help of a friend and fellow aeromodeller, Ioan Wittman, to get it running. Ioan, (Yo-An) is not only an aeromodeller, he is also a qualified and experienced motor mechanic. We soon had the engine running. I was most impressed and bought three more Laser engines second-hand from eBay, a 70, an 80 and a 62. I also bought a 150v at an auction in Exeter and Ioan helped me to get that running. I have adopted the practice of photographing any engines I own, running on the test stand. I have never started the 80, that's destined for a DB Sport & Scale Auster, but I have tried repeatedly to start the 62 without success. I even fitted new rings to it but not a pop. Consequently the 62 has never been photographed running. I suspected that the valve timing was out.

In 2015, having sold my house in England and retired to rural France, I was well wedged so ordered two new Laser 70s and a 155 from Jonathan Harper at Lasers. Over the next two years I built the Big Guff, one of the first models specifically designed for radio control. Build blog here : https://www.rcgroups.com/forums/show...f-This-is-mine. I fitted one of the new 70s to the model which flew it well enough but it was rather over-powered

In February the fuselage and tailplane were destroyed in a fire caused by an exploding LiPo. I am in the process of finishing off the fuselage and a club colleague, Guy Auvieux has built the tail surfaces for me. Now another modeller, Sherwood Heggen from Wyoming has also built a Big Guff but his is powered by a Saito 65. Sherwood's build blog here : https://www.rcgroups.com/forums/show...ght=Big%20Guff

It occurred to me that if Sherwood's model could fly on a 65 then mine might well fly on the 62 and I could reserve the 70 for the Warbirds Replica Hawker Hurricane which I made so much fuss about acquiring some years ago now. Last night I fitted the engine mount to the Big Guff and offered up both the 70 and the 62 to the model. At this point I found out the reason why the 62 wouldn't start! If you're not familiar with Laser engines the reason may not be obvious so I've included a picture of the 90 so that you can compare the two.

Do you know what it is yet?

PS. Yes I know that the engine mount is too big. I have one the correct size which should drop in.

Old 08-06-2021, 04:14 AM
  #9840  
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Isn't the carb on the wrong port?
Old 08-06-2021, 05:26 AM
  #9841  
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Originally Posted by FlyerInOKC View Post
Isn't the carb on the wrong port?

I think so. Well done Mike!

I hadn't noticed until last night despite the fact that I've owned the engine for some years!
Old 08-06-2021, 05:29 AM
  #9842  
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It took a couple comparisons of the two photos before I caught it. With an unfamiliar brand unless you had two engines side by side you wouldn't catch it.
Old 08-07-2021, 08:43 PM
  #9843  
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I needed a 1/16" Allen Key to remove the grub screws which retain the carburetter and the exhaust. I have a set of Imperial Allen keys but guess which one is missing!

However, when I was last in England I bought a sort of multi-tool from the model shop in Weston Super Mare because I needed a very small screwdriver for micro servos. Cost me 18! That's about 21.25 or $25 US. It had a further fifteen bits in the handle including a 1/16" Allen Key. With a bit of WD 40 and some heat I was able to remove the four grub screws which secure the carburetter and the exhaust, though two of them require some further persuasion in the form of pliers on the exposed part of the grub screws!

Having swapped the carburetter and exhaust over I installed the engine in the test stand and it fired up staight away. The high speed needle required a little adjustment, the low speed needle required no adjustment, throttling and tick over were excellent. I was running it on a Bolly 10.5 x 7 prop which was perhaps a bit small for the engine but it's what I had to hand. A 12x6 or 13x6 is normally recommended..

However, there is a stripped thread where the rear r/h bolt screws into the crankcase which permitted some oil leakage and the prop-driver is cracked. Jonathan Harper of Laser informs me that the 62's prop driver is the same as the one fitted to the current Laser 70 so I'll order a new one. I'll see if I can get a helicoil insert fitted. A Metric one would do. It doesn't have to be 4BA. I'll probably treat it to a pair of piston rings while I'm at it.. Any advice for the cosmetic restoration of the engine would be appreciated.

Fancy owning an engine for 10-15 years and repeatedly trying to start it without success over the years without realising that the carburetter and the exhaust had been transposed! I own another six single cylinder Lasers too!

Apparently it was quite common in the past for brand new engines to be returned to the factory because they wouldn't run. This was because the owners had fitted the exhaust and the carburetters the wrong way round! Nowadays they leave the factory with the carburetter already fitted!

.






Old 08-08-2021, 06:57 AM
  #9844  
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That crack doesn't look good!
Old 08-08-2021, 07:23 AM
  #9845  
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I wonder if the engine would have run the other direction.
Old 08-09-2021, 09:06 AM
  #9846  
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This is the best Battle of Britain video I've ever seen even thjough much of the footage is taken from the 1969 film.


It's a shame that they didn't interview any German survivors.

Old 08-11-2021, 08:07 PM
  #9847  
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Maidened the ARTF Acrowot this afternoon. It flew well but I hadn't got the tick over low enough on the engine, a Laser 70, so though I made a good approach and got both wheels right down on our 10 metre wide tarmac runway, the landing was a bit fast and the model rolled into the stubble. There is a small hole in the covering on the underside of the wing. No big deal.

At least the undercarriage didn't rip out which is the ARTF's party piece.
Old 08-12-2021, 10:02 AM
  #9848  
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You might try a prop one size longer with less pitch.
Old 08-12-2021, 07:22 PM
  #9849  
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Originally Posted by Stikum View Post
You might try a prop one size longer with less pitch.
Thank you Stikum I'll try that.

Light winds and high temperatures, 31C or 88F expected this weekend so I'll be going flying again.
Old 08-15-2021, 03:25 AM
  #9850  
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I am contemplating building a Fokker Triplane over the winter, knowing my building speed and my penchant for fine wines, more likely over several winters! For some reason. I have always admired this aircraft and I have several books on the aeroplane. I have two 1/4 scale plans one by Arizona Aircraft Replicas the other by David Hurrell whose plan was published in the January/February 2003 edition of "RC Scale International." David Hurrell incidentally was an Air Vice Marshall in the RAF, just one rank away from the very top of the service, a useful man to have on the club's committee!

I plan to build an early version of the triplane with the black crosses against a white square on the top wing to aid orientation. I am useless at painting so I will chose a simple scheme. The two favourites at the moment are the triplanes of Hans Weiss and Adolph Ritter von Tutschek.

Hans Weiss was one of Manfred von Richtofen's (MvR) flight leaders and he supposedly flew a triplane with a white rear fuselage in April 1918. The triplane in the background of the last photograph of MvR is probaly his. Weiss was shot down and killed on 2nd May 1918 by which time his aircraft had straight sided crosses and could have been completely painted white. He was killed on 2nd May 1918 by a bullet through the head fired by Lt MS Taylor, a Canadian pilot of 209 Squadron who flew a Sopwith Camel. At the time Weiss was attacking another 209 Squadron Camel.

Von Tutschek flew a triplane with similar markings to that of Weiss but painted black where Weiss's aeroplane was painted white. Black rear fuselages and tailplanes were the squadron markings of Jasta 12 of which von Tutschek was the squadron leader. He was killed in this machine by Harold Redler of 24 Sqdn RFC flying an SE5a on 15th March 1918.

Both Redler and Taylor were killed later in the war.

Lest we forget, gentlemen, lest we forget.







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