MaL

www.bmfa.org works here....win 7/Opera 24/9/18 20:22 CET

Why not fit a DPDT slide switch is series with the electronic on/off switch? that way you could charge the batts in situ too.... where did I leave me coat......

Posted by Manish Chandrayan on 03/09/2018 03:08:35: The 35 is fine, but I didn't have success with rear exhaust version and the supplied muffler gave me serious grief. Just wondering if you had the rear exhaust piston fitted? Both the side exhaust and rear exhaust pistons were supplied in the box when I bought mine......

So...the starboard wing has 0.3 degrees of washout, so no problem there, but the port wing has 1.4 degrees of wash 'in'.. which is not good. You seem to me to have 4 choices... 1. Remove the covering on the port wing and steam/ ammonia it straight(er), and recover it. 2, Redrill the mounting holes to give the port wing 1.7 degrees anti-clockwise rotation (increasing the tip washout and balancing the lift from both wings) 3. See if Seagull will send you a new pair of wings 4. Live with the port trim.... now you have straightened the tailplane has that cured the screwing out of tight loops?.. IIRC the one I had didn't take kindly to too much elevator, but was fine in big loops and inverted loops so I reduced the elevator travel. It still had plenty of authority when landing.

As the wings swivel on the main wing tube and are fixed by two (plastic) screws that fit through each fuz sides perhaps you can 'introduce' a corrective adjustment by filling and re-drilling the holes in the appropriate direction?......

Posted by BackinBlack on 20/08/2018 20:47:57: Referring to the OP, the servos being mounted "mirror image" is quite standard and produces opposing movement for the same input signal via Y -lead. No trick servos here. That is true for the ailerons..but not the flaps...

Posted by Mike Blandford on 11/08/2018 09:33:10: Does anyone know if DSMX does LBT, and if it doesn't, what does it do to be legal in the EU? I'm not aware of a different version for EU and rest of the world use. Mike Edited By Mike Blandford on 11/08/2018 09:33:28 See top of page 2 Mike

Posted by john stones 1 on 03/07/2018 11:58:56: Posted by MaL on 03/07/2018 11:42:43: Posted by john stones 1 on 02/07/2018 22:33:54: ebay, I use these, been good and run silent. Sorry John, but I would not be recommending that as a good PSU to use in this application. This is a desktop PSU (and not a very good one at that judging from the feedback it receives from your Amazon link and Tomshardware.com). While it claims to be rated at 750 Watts you should note that that is the total power it is (possibly) capable of supplying and as it has +3v3, +5v, -12v and +5vsb otputs as well as the +12v one. The actual limit on this particular supply at +12v is 444Watts, or 37 Amps. This may, of course, be plenty for your charging requirements but it is worth bearing in mind that some desktop PSU's require some load to be placed on the +5v line in order to properly function ie regulate the voltages properly. A far, far better bet is a second hand server power supply as indicated earlier as these are designed and built to a much higher spec, will be an order of magnitude more reliable than a cheap desktop PSU and are designed to supply just the +12v Well I stand suitably chastised, I'll take my cheap psu n go charge a lipo for tomorrow, I know how Penny feels now. I'm not chastising you John.. I just stated I wouldn't recommend that power supply and outlined why.....

Posted by john stones 1 on 02/07/2018 22:33:54: ebay, I use these, been good and run silent. Sorry John, but I would not be recommending that as a good PSU to use in this application. This is a desktop PSU (and not a very good one at that judging from the feedback it receives from your Amazon link and Tomshardware.com). While it claims to be rated at 750 Watts you should note that that is the total power it is (possibly) capable of supplying and as it has +3v3, +5v, -12v and +5vsb otputs as well as the +12v one. The actual limit on this particular supply at +12v is 444Watts, or 37 Amps. This may, of course, be plenty for your charging requirements but it is worth bearing in mind that some desktop PSU's require some load to be placed on the +5v line in order to properly function ie regulate the voltages properly. A far, far better bet is a second hand server power supply as indicated earlier as these are designed and built to a much higher spec, will be an order of magnitude more reliable than a cheap desktop PSU and are designed to supply just the +12v

One of my favorite small airfields in X-Plane, and I thought it quite tricky to see the airfield from the east with so many woods and copses around. Many interesting places to visit along the south coast and IoW. Wish I had been lucky enough to have been able to do it full size.....

You are lucky, I also used the pinprick holes as a master for the cowl fixing screws.....but found out that the pin prick hole went into balsa and missed the block by 3mm... Grrrrrr

Secondary. For all the reasons above do not fit it to the primary (also because the primary is AC). You will also need to rectify and smooth the secondary to produce DC. That is the same DC motor controller I linked earlier. I have always used nichrome for the resistance wire so wouldn't know if half an amp is enough when using welding wire.....perhaps it will be for a short bow.     Edited By MaL on 17/06/2018 14:13:04

He is operating the transformer out of spec in a potentially dangerous manner and I would suggest you do not do the same. Use a FET motor controller that uses a variable mark/space 555 to control the power supply output power as linked above. google transformers and non-sinusoidal waveforms? to read about the subject from people that are eminently qualified to comment...not just from a blogger.

In my day a lighting dimmer was wired between the line and the bulb... if you are talking LED PSU's being driven by a LED dimmer then they are designed to deal with the abuse, but good luck finding one that will deliver enough current to drive a hot wire cutter. Normally I think high current transformers should not be used with a chopped up waveform and definitely not with an inductive load (not that in this application the load is inductive). When I built a PSU for use with a hot wire cutter I used an old PC power supply to provide the +12Vdc and a variable volts regulator to adjust the voltage (and hence current)to the required value that gave me the right wire temperature... something like this would be the modern equivalent **LINK** If you wanted something with some form of temperature feedback then perhaps going the arduino route with a thermistor and an external MOSFET switch board like this - **LINK**

Posted by Nigel R on 16/06/2018 15:00:33: Can you put the dimmer on the mains side of the transformer? Fairly sure this would work ok. I seem to remember that fitting a dimmer on the input to a transformer is a No No as the dimmer chops up the sinusoidal waveform which screws up the power loading of the transformer.

Posted by Gary Manuel on 15/06/2018 20:36:13: I used the tangs in this former to fit a retaining elastic band behind the tank on mine to prevent it sliding backwards, this makes it easier to remove the tank should it become necessary.... at least that's what I thought.

I have two RCGF 15's, one in an enlarged Hots Hot (180cm) and one in a 1/4 scale Stephens Akro. I use a 14*10 prop. Is it noisy?......how long is a piece of string? The included muffler is not the best! I have the pitts silencer fitted to mine and they do a slightly better job. You can fit a pepper pot to the outlet pipe(s), which helps with the 'bark' if you can live with a loss of top end RPM . Biggest drawback in my view is the radial mounting is a bit vulnerable to breakage in the event of a heavy nose over or 'arrival' and that means a new crankcase to fix it.

Thanks Alex but if I had wanted linux I would have bought a laptop. It is, at least in part, the reason for buying the chromebook - the inability to execute peer to peer file transfers with ease as it makes the platform more secure. 'a FREE small bit of software that works on everything, Windows, Linux, etc.' I was just pointing out that this statement is not true.

Posted by Alex Ferguson 2 on 30/05/2018 23:43:15: Posted by Bob Cotsford on 29/05/2018 12:54:43: My moan about the recent update is that they've decided Homegroups are an outdated concept ........I can no longer swap files between my laptop and desktop Fortunately there is a much easier way of file swapping. Dukto, a FREE small bit of software that works on everything, Windows, Linux, etc. Boot it up on both computers, click on the computer name of the go-to computer, on the sending computer, drag the file over the Dukto box and the file is in the other computer, instantly if not too big, a bit longer if it is GBs worth. Where I have 2 computers and no internet, I use an old modem and plug both computers in (or use WiFi) for file swapping. My partner is using Windows (an accounting programme needed for business) and for the second time in a month, both monitors show the same picture at the wrong aspect and resolution. I NEVER have that problem with Linux Mint. If an update is done, things don't break. Why does FREE software work and paid-for not work? That accounting programme MYOB, took them 5 years to get their latest version to work properly. You pay for help and home visits by helpers. She never paid because it was always their "stuff-up". Doesn't work on a chromebook.

So good you had to say it twice Jon?

Yes Martin...and I for one agree with you....but you will now need to find a source of lead free solder..... unless you stocked up before the enviromentalists decided you could not be trusted with your own health.

Posted by Bob Cotsford on 29/05/2018 12:56:16: Posted by kc on 29/05/2018 12:51:02: Surely the latest Data Protection laws should have protected us from any alteration of our own computers WITHOUT our specific agreeing to any updates. But they didnt.......... You do have the option in settings of not accepting updates kc. I'm not sure how effective that setting is though. Ummm I thought it was not possible to prevent the updates.. at least as a non-commercial (ie private individual) user once you have fallen for the 'upgrade' con elected to upgrade to Win10. I believe as a domain admin you have the opportunities to filter at least some of the updates but that would have required you purchase the full business Win10 edition.....hands up those who splashed out on that! I also can't see how data protection could save you as MS are not manipulating your data... only their software.. besides you agreed to allow them to do it when you agreed to the original win10 download. Win 7 'pukka' install disks with a 'valid' licence key readily available from auction sites when you get sick of 10's idiosyncrasies

These people claim the EV resonance charging systems are more efficient than 85%..and that is with todays technology. "Larger batteries for the electric vehicle use resonance charging by making a coil “ring.” The oscillating magnetic field works within a 1-meter (3-foot) radius. To stay in the power field, the distance between transmit and receive coil must be within a quarter wavelength (915Mhz has a wavelength of 0.328 meters or 1 foot). Resonance charging is not limited to high-wattage wireless chargers; it is used at all power levels. While a 3kW system for EV charging achieves a reported efficiency of 93–95 percent with a 20cm (8 inch) air gap, a 100W system is better than 90 percent efficient; however the low-power 5W system remains in the 75–80 percent efficiency range. Resonance charging is still in the experimental stages and is not widely used.." Not widely used (yet) partly because they have not been able to get the spurious emissions down to an acceptable level - 3KW generates quite an RF field, and as 915MHz is in the ISM licence free band I would imagine there will be problems with other with low power devices that use the band. **LINK**

Don't the grid still allow data burst over the network?.. I seem to remember that was the potential issue in the past, not the 50Hz. As it is not a continual stream you could never be sure if it was a data burst that caused the rx glitch.

I think National Grid UK may have some 'advice' for you concerning flying close to one of their pylons.