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David Ovenden

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Posts posted by David Ovenden

  1. I don't see why a 120FS wouldn't fly this model nicely...... if the engine is working as it should, with the right prop. My 80" Seagul chipmunk  flys great on a Saito 125 and my 85" Great Planes PT19 is a joy with its Saito 115. Neither are underpowered. I would check the timing, re set the carb, try changing the plug and experiment with other props (one change at a time to check the effects) before buying a new engine. There's a video somewhere on YouTube showing the big 85" BlackHorse chipmunk flying effortlessly on an ASP 120FS.

  2. KC, thanks for additional info. 

    The plane certainly was modified during its lifetime (as JD8 rightly points out) and may well have been repainted too. The picture of 140 in the snow with DH style wheels and no fin flashes evidences this. It also looks a much lighter shade that might suggest an all over yellow or silver scheme. I think I will go with yellow as many RCAF aircraft of that era (Tiger Moth, Siskin etc) were painted yellow. So, it will at least be in keeping with contemporary biplanes of the time.  And I already have an all-silver one!

    • Like 1
  3. On 27/11/2022 at 04:33, Dale Bradly said:

    I have a problem that has kept a model grounded for a couple of years, and i want it sorted.

    BT Spitfire, and the wing was built around a specific set of retracts.

    However, i have a problem with one of these, and it needs repair. In short, it's a specific design, from one supplier, and for reasons only known to themselves, they will not sell me another, nor parts for.

     

    This is the retract in question:

    1 Pcs 90 Class Electric Retractable Landing Gear For Remote Control Aircraft Model Parts - Parts & Accs - AliExpress (the 100° version)

    This is the circuit board i'm needing to "replicate", at least in part as above.

     

    20221127_123431.jpg

    When you say "they will not sell me another". Do you mean the retracts unit is not available? Or they won't sell one to you? Or they won't supply any parts to you?

    From the site they seem to be available. If its just you, perhaps someone else could order one for you?

  4. I have a B&W photo of a Haeker Tomtit which was supplied to the RCAF in Canada. Can anyone help with identifying the main colour of the plane. It doesn't look to be silver. Could it be yellow? Or green? It's not the same as the fin flashes (red blue or  white).It seems hard to belive it could be silver, especially in view of the big contrast between the fuselage colour and the Ali cowling and fuselage step. Thanks for looking.

    1434663689439.webp

  5. 4 hours ago, Geoff Daunt said:

    Hi, just wondering if anyone has built this model. 1/3.8 scale and 2.36 m wingspan. Any information on the build… or problems or issues would be appreciated. I want to do the model justice and include a Scale ‘Ish cockpit.I am a competent builder but do not have the skills to build a scratch built cockpit.. so looking for the best Cockpit kit in the UK. 
    I guess 1/3 scale would be ok even if slightly  big for true scale…. But not going to get 1/3.8

    Any recommendation for a cockpit kit greatly appreciated. Thanks.

    1/4 scale cockpit and instruments would be much closer to 1/3.8 than 1/3rd scale items and easier to find too I would have thought.

  6. I cant see your video. But from your description it could possibly be the prop driver "clicking"against the D shaped drive on the crankshaft. Slight play between the prop driver and crankshaft. Does it still make the noise with a prop fitted and really tightened up?

    • Like 1
  7. A quick update. The job has been successfully done now and the model is all cleaned up ready for the new canopy. In the end (as so often is the case with clean-up tasks) I didn't find one easy answer. However, carefully picking at the old glue with a blunt knife blade combined with using fingernails; followed by a clean-up with meths did the trick. All the original film covering is still intact and secure, and I managed not to nick the film or dent the balsa underneath in the process. Jobs a good'un. Thanks for your ideas and input.

  8. I don't have the Just Engines knuckle, but I have several Saito engines using 90 degree "elbow" manifolds. Some with the standard muffler and some with flex extensions plus muffler. Most are enclosed in cowlings. None of them have overheating problems. 

    Is your engine really overheating? 4 stroke exhausts always do get pretty hot . Can you try your engine without the knuckle  to see if there is actualy a temp difference compared to when it's fitted?

  9. 23 hours ago, Paul De Tourtoulon said:

    The thread on the main needle is the same as my Novarossi and super Tigre, so if anyone is short of a main saito needle,,,

     

     I ran it up after all was adjusted, on crap 10% fuel and a really dirty old saito plug, no exhaust just the tube piece supplied with the engine, I will sort the silencer out tomorrow with any luck,  I got 2.000 rpm on the idle and 9.700 rpm on a Graupner ( old grey one ) 13.5 x 8 hell does this motor 'thump' and vibrate.

    I have got a 12x1.0 tap and a die to suit the Saito 100 exhaust thread if you need them Paul. Also an "anti-vibration" engine mount if you want to try it. Think its a Weston-made one.

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