John Muir
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Posts posted by John Muir
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A couple more from Angus:
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Leccy, I didn't realise that was you at the Angus club or I'd have said hello. I saw your model go down, sadly. Looked really nice in the air. There were a few of us up from Dundee, I was flying my Wot 4 mainly, but had some fun with an Edge 540 foamy and a little Graupner Terry as well. Some very impressive models and flying on show, particularly Dan Gallo and his big Ultimate, although his KeilKraft Champ almost stole the show I thought and, as you say, the site is excellent, especially considering they haven't been there long. What with the weather being quite decent it was a lovely day out.
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A couple of neighbours have it. They need the net for work and we're rural with no chance of any more than 8mps until 2028 if we're lucky. Works very well apparently. Very fast downloads. Expensive though at over £70 per month and you need a motorised dish to track the satellites so needs careful setting up.
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Hey Leccyflyer, I was up Pole Hill this morning. Supposed to be less windy today but it was still very blowy! I had a Wild Thing and a rather inappropriate Weasel with me. The Thing was fine but I had a heck of a job getting the Weasel away. It either slapped down in front of me or flipped up and back over my head. Once it was out in smooth air it flew surprisingly well although it was struggling to penetrate as the wind strengthened later. There was no shortage of lift and I had a couple of peregrines zooming about for a while. Great fun.
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I was a dispensing optician. It's unlikely to be an optical problem if you can still see the model clearly enough at a distance. Binocular vision only contributes to depth perception out to a distance of a few feet. Beyond that your brain uses perceived size and relative motion to judge distance. You mention the problem is with your Big Guff mainly, so the clue might be in the name. It's big. So your brain is probably telling you it is closer than it really is. You'll probably just have to consciously remind yourself that it needs to look a lot bigger before it's time to land. I'd also go with the advice given above and try to land more or less in front of yourself instead of way down the runway. Looking at something coming straight towards you makes it difficult to judge its speed and with a slow flying plane in particular, it would be easy to stall it. It's never a bad idea to get your eyes tested though. At your age it wouldn't be surprising if you needed distance glasses, even if you've never needed them before, and there could be other changes, like early signs of cataracts or the like. All sorts of health issues can be spotted by an optometrist.
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T9 do longer length antenna 250mm long £2.28 each if that's any help.
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Toto, you can't range check a 2.4 transmitter in 'traditional' mode without walking maybe a kilometre or more until the controls stop responding. The only practical way to do it is in reduced power mode and you should be able to get, at the very least, 30 metres from the model with everything still working. With my gear (FrSky) I can walk up to 80 paces before the controls start giving up in range test mode. A range test failure could indicate a transmitter problem and you should make sure that the next time you go out you range test (in reduced power mode) everything you intend to fly before you start and if anything shows up, investigate thoroughly before flying. If two models fail a range test then the finger definitely points at the transmitter.
Back when we flew 35MHz range tests were done with the transmitter aerial retracted to reduce the power output. Same basic idea.
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Glad that helped.
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Don't know if it's any help Matt, but T9 HobbySport still have a few Delta 8 receivers which work with AFHSS (as well as Futaba and FrSky). They're £24 each. I've got one I use on FrSky ACCST and it's been perfect.
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Take care with Radiomaster receivers. They are meant for use with a multiprotocol module or Radiomaster transmitter as they need 'fine tuning' of the transmitter for them to work properly. FrSky transmitters don't have that capability as it is not needed with their own receivers. They may work with reduced range but you've got to be aware.
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I had a look in an old plans handbook and I think that might be an RM239 by Brian Peckham. The plan is still available from Sarik Hobbies if you want to have a look yourself. Right wingspan and the tail looks the same?
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If you want to test the servos just unplug the esc and plug in a battery from an i.c. plane instead. Better than risking another esc.
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There are a few of these flying at our place. I was training somebody on one yesterday. It is a well sorted, well designed model that does practically everything nicely. The 2200 batteries are a bit small. We tried those a while back and could only get about four minutes out of them without discharging them excessively. Yesterday we were using 4000 and 4500mAh batteries and they give a comfortable 7 or 8 minutes which allows for a decent lesson. Surprisingly (to me anyway) the plane still flew perfectly well. It seems very tolerant of the weight and forward CG. There are guys here flying them on 5000 and 6000 packs, although how they manage to cram them in beats me. You will enjoy flying this one Toto.
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Haha, if it felt like work I wouldn't do it! I just have nerdy inclinations. I must say my spreadsheet is much less colourful and extensive than yours Leccy. Mine seems dull now.
2 minutes ago, leccyflyer said:Excellent work Sir!
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I do. Spreadsheet and everything. So I can say that last year I flew on 78 days and had 382 flights for a total of over 52 hours flight time, which, by my standards isn't too bad. I also keep notes about each session with anything odd, unusual or that might need attention included so I don't forget stuff. I had a twelve year break from the hobby and started logging when I came back as I regretted not having decent records of what I had gotten up to previously. I tend to fill in my log while I've got batteries on the charger and it doesn't take long. It's interesting.
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Sorry, meant to say, the MPM would still need fine tuning for the X8R as it might not be bang 'on channel' due to the clone chip. Alternatively, you could put Mike Blandford's Universal firmware on the X8R and it will 'autotune' the receiver to the tx automatically.
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RSSI is useful, but only once you've established what is 'normal'. I always check my logs when I go home and if the RSSI plot looks similar to the last time I flew that plane, I'm happy. Any obvious differences mean something's wrong. And it does give an indication of flying too far away providing the warning level is sensible. I just don't get any warnings in practice.
30 paces (however long your legs) is marginal and I would consider totally inadequate for a FrSky receiver, but I don't know what should be expected of a Radiomaster receiver. If it is the transmitter restricting the range, i.e. if the X8R has less range when tested with the MPM than with the FrSky module, then I would give up on it or switch to Spektrum or Lemon receivers which use a different chip to FrSky. Of course there is the possibility that the tx is simply faulty and is transmitting at reduced power across the board, but the only way to find that out would be to range test with a different protocol and see if the problem persists.
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I agree GG. I range test on reduced power and walk until the controls stop working. That's usually well over 80 paces with FrSky gear. I check the RSSI at that point and reckon that should be my 'Oh No' number. It's generally at about 30. The default warning values usually work fine in flight but I do have one receiver that reports RSSI values consistently about 10 less than the others, so I reduced the RSSI alarms for that one to avoid being annoyed by that lady in the box when I'm flying. The range is not an issue, just the RSSI calibration is different. Going by RSSI numbers alone as a guide to range is pointless.
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Graham, you have not tuned a receiver, you have tuned your transmitter to match each receiver. As it isn't possible to do this with a FrSky tx or module the receiver's performance may well be affected. I believe Radiomaster receivers are only suitable for use with MPM based transmitters which include the fine tuning ability. Your only valid test will be to try the X8R receiver with the FrSky module and compare it against the X8R with the Radiomaster's internal module. That will give you a true indication of relative tx performance. The Radiomaster receivers can't tell you anything because they almost certainly won't work well with the FrSky module.
(P.S. dump the Bourbon and try a nice Speyside malt. That fixes everything. For a while)
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The problem with the Radiomaster receivers appears to be that they need to have the transmitter tuned to each specific receiver to compensate for poor quality components and/or poor QC. You can do this with the MPM but not a genuine FrSky module as there is no need for this with proper FrSky receivers. With up to date firmware and a FrSky receiver on matching firmware you will almost certainly get very good range. With a Radiomaster, who knows? It might be a decent match, it might not. My FrSky stuff all works very well. The Radiomaster receivers have long threads full of complaints and problems over on RC Groups where the they appear to have come to the conclusion that some of them are fine, while others are not. Personally, I don't feel this inspires confidence.
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I think that's a Superfly. The tailplane is on the bottom of the fuselage with a one piece elevator. The Yamamoto seems to have the tailplane halfway up with a split elevator. Also the wing shape is slightly different.
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I don't think the R88 will work very well with a proper FrSky transmitter as it can't be fine tuned like a Radiomaster. There's no need with genuine FrSky receivers but the Radiomaster receivers aren't made to the same tolerances so sometimes won't work properly with FrSky transmitters. So nothing to be gained there.
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Too slow, as usual.
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That particular prop is designed for engines and is heavier and sturdier to stand shock and vibration. Electric props, such as the APC 'E' series are lighter and more efficient. The Master is also a more 'traditional' design whereas APC props use a more sophisticated blade design which is also more efficient. It means you should get more thrust from an APC for the same power.
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Club Bank Account
in Flying Sites and Clubs
Posted
Our account is with RBS/NatWest and is free to operate. There was a requirement that the person opening the account had to be a customer of the bank already, but other committee members could be added as signatories. It's available to unincorporated community organisations and charities. Or was in 2022.