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looks like polyspan is what I need.Thanks all
Hi DocJames
If you contact Mike Woodhouse for Polyspan, get the new 15 gram/sqM type or better still, check with him on which is the better of the 2 weights available to use.
Ployd
I tried some of the lighter stuff. The problem I found is that it is more porous than the other, and harder to fill. With the thin trailing edges, the dope would bleed through and accumulate at the trailing edge, sticking the top and bottom covering together.
Am I doing somethig wrong?
Thanks,
BillYou could try using MANY coats of very thin dope.
Years ago, I think in Model Builder -please take a moment to mourn the passing of same- in the GYSOB article, the author described his method of doping silk. He used bunches of coats of dope thinned something like 80%. It built up a thin layer that would eventually close the gap on the silk. Then he used thicker dope. Might be worth a shot.I have started covering the f1b wings in polyspan and I think it is exellent.I wont ever use litespan again. It is easy to dope onto the frame and heat shrinks well.It also appears to be really tough.Thanks for all the advice.The weather is good so I am off to trim myBukin F1G this afternoon.
Managed to get some flying in just now, with the Bukin F1G. There was no wind so I risked it on a small field nearby.It is a dream to fly. It’s a bit depressing that you have to get someone else to make a model to get to this level! I have covered the wings of the F!B with polyspan. I might brighten them up with a bit of tissue decoration.It’s very forgiving to use.It looks like balsa is a thing of the past now! Its all a far cry from the planes of my youth, but a lot less frustrating. I’ve got a tracker to fit now, as I think the main problem will be losing it rather than crashing.
Hi DocJames
A better and lighter solution to colouring your new wings is to give them a dusting with spray paint. I have been using Tamiya spray paint (little cans) and picked the fluro colours.Mask off the wing with tape and spray on (no undercoat needed). You could try some of the car touch up paints as an alternative.
Ployd
I was thinking on the same lines earlier today. I wondered if I could get my neighbour to spray them with a thin coat of cellulose fluoresent spray.Compared with my previous attempts with tissue and mylar and litespan the results have been great – no wrinkles or creases at all. My Bukin f1gs have what appears to be doped on colour tissue.That was my other option.I think I’ll try the Tamiya spray first
You can also use Dr Martins India Ink. Thin with some denaturaed alchohol and spray with an airbrush. You cannot measure the weight and it is U.V. proof.
I would like to try that but there seems to be no supplier in the UK.I will continue to investigate . Jim
Well I gave the wings a light dusting of fluorescent orange and flew the model recently.It flies well but I find it a pain having to disconnect the prop assembly to wind. Even worse is holding the bobbin with a wire and refittingthe Montreal prop assembly.My older F1B could be wound through the montreal assembly which was much easier.So much for progress.That said its a great model and I am getting some good flights out of it.Its all good fun.
Although getting the prop on and off is a drag, I’ve seen a whole bunch of blades broken by a blown motor. Those little parts on an F1G don’t make it any easier, either! 😀
I thought there must be a good reason!!
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