Frank Skilbeck

Ken, no 4.2v per cell is fine, just don't store them at that voltage, fine the day before you go flying, but not for weeks. If you're not going to use them for a while set your charger to storage charge and it'll charge/discharge them suitable for long term storage.

Ken, youi want 220 ma for.a 1/10 C charge on 22ma, but for Nimh batteries when they are fully charged there is then a small voltage dip and this.what the.smart chargers look for, but 220 ma is basically a trickle charge anyway. As for.the.lipos then.yes, but the minimum voltage will depend what load you put on them, 3.8v per cell off load is fine, but under load the voltage will drop below this well before the battery has run down any appreciable amount. On charge your smart charger will automatically restrict the voltage to 4.2v per.cell. It will charge at 5A and once the cells reach 4.2v start reducing the current the lipo being fully charged when the current gets to.0.1A. It's a good idea to balance charge the Lipo to keep the cells balanced.

If it's a bigger plane then Sub C cells suffer from less voltage drop under load, but for 5 standard analogue servos it's maybe a bit of.overkill.

I find component shop very good.

No you have to keep the valve closed while you are refitting the collets. On a 75 I changed a valve spring on I made up a wooden wedge which sat in the head and kept the valve shut while I held the head down. I used a small open ended spanner to compress the spring.

There was another thread where it was noted that electrical models don't need restraining as they aren't live until the battery is connected, together with the letter in this months RCME where a modeller had accidentally plugged the ESC into the aileron channel on twin, I thought I'd start a thread on electrical safety with an issue we had a couple of weeks ago. It was a couple of new seaplanes myself and a clubmate had built, mine had flown but my clubmates hadn't. Anyway down at the lake first off his ESC wouldn't arm, but this was because he hadn't reduced the trim after that it worked fine and he did some water handling trials. Before the test flight we noticed that he had much more elevator movement than my model had, so he reduced throw to match mine. On plugging in a new battery the motor immediately went to full power and the throttle didn't work, fortunately I was holding the model and he was able to unplug the battery, so no harm done, but if it hadn't have been restrained it could have been a different story. We are not sure why the motor went to full power when we reconnected a battery and this is under investigation (with the prop removed). he could have inadvertently modified the throttle settings on re-programming the elevator we are not sure.

Could be for say dual elevator/flap servos, one input two outputs one of which is reversed. But I'm watching with interest as to what it actually is.

Clubmate has got an aerobatic model with a 50cc (DLA I think), initially quite noisy, but with a canister exhaust and suitable prop it passed our noise test, 82dba at 7m, quite smooth running and no noisier than other IC, glow 2 and 4, engines in the air. But the silencer system wasn't cheap. My NGH 38cc 4 stroke with the Just Engines optional silencer also passed our noise test but did knock top end by 200 rpm or so.

It won't do any harm to try and recharge, but I would then cycle it a few times to see how it performs, but I suspect it might be beyond redemption.

Just to return to this, had a newbie looking for a transmitter so thought we'd try the Dx6e again, this time to another club mates DSMx Dx6e, same problem it wouldn't bind to the student Tx. Then we noticed that the firmware was version 1.23 and the clubmates was the later 2.09. Updated to 2.09 and it not only links up with DSMx transmitters now but also the older DSM2 ones as well. Thought I'd post this in case anybody else is struggling to link one to another Tx, then check the firmware it's running. The Spektrum update process is very easy, much less arduous than registering it in the first place 🤨

My mates Moki radial is very smooth, doesn't sound too bad either 😁

If your radio supports it then a gps sensor can transmit location, so if logged on the tx you'll be able to see the last known location. When the farmer grows maize in the adjacent field to our strip, if a model goes down we tell the searchers to take their mobile phone and the windsock, that way we can see where they are and guide them, once you start walking in tall crops it's very easy to get lost. I've now found 3 models with my drone!

If it flies as well as my CAP Jungmeister you're in for a treat. Look forward to seeing the finished model. 👍

I've used Poly C and nylon, which also worked well.

My 82" wingspan Mick Reeves Hurricane runs on 5000 mah 6s lipos, flies well, but now 2 out of my 3 5000 mah 6s lipos are not delivering adequate performance, so do I spend £150+ on a couple of new lipos or change it to IC. Maybe an easier choice for me as I already have all the IC paraphernalia. BTW good article in this months RCME by Martin Hardy on designing and building multi engined scale models.

My mates 82" span Sid King Privateer is powered by an old Zenoah 38, never feels underpowered, might not have enough power for prop hanging but fine for sports aerobatics, don't think I ever use full throttle when flying it.

Kim, on my gliders which have flaps and ailerons I use flight modes, so in one mode the flaps are coupled to the ailerons but in landing mode they drop right down as flaps and aren't used for roll control. Can you do similar. Note you may need to adjust the flap hinging to ensure the flaps can drop down enough to be effective.

Not flown a Sonic Liner, but have had a couple of canards and they used the canard for elevator control. Multiplex are pretty good.as.setting up.their.models so I'd go with what the manual.recommends. Don't forget to post a video of it in flight. 👍

If you think about it, that's what S Bus servos basically do. The only issue can be soldering all the individual +ve and -ve wires together on the plug you can get These.to make it easier.

Note Ripmax Europe Ltd and Amerang Ltd are not in administration,

Yep, probably the position signal isn't strong enough to support these 2 servos, but if your rx has enough channels then just remove the Y lead and plug them into separate channels.

We have a new club member learning on a brushed MPX twinstar, we put a 2s lipo in it and it goes OK, so if you want stick with the existing brushed motor then a brushed ESC and 2s lipo would work. Fitting an outrunner motor in a glider.fuselage designed for a 600 brushed motor might be more.hassle.than it's worth.

Albert assuming your charger is the same as my overlander chargers, go to the Nimh setting then scroll through the options, set the discharge current, in my experience 1amp is a bit high I'd go with 0.5A with a cut off at 4 volts. Then give it a couple of discharge/charge cycles and see how it holds up. If the voltage drops significantly on discharge I wouldn't use it in a model.

Looked at our flying log for the last 12 months, typically in winter say Nov through March we flew about 60% of the time of summer. BTW if you want stick time and have any slopes nearby a slope soarer is a great way of getting stick time, maybe one of Stan Yeos kits http://www.phoenixmp.com/acatalog/Gliders.html

My mates 28 % 113 inch FW190 has closed loop on the rudder.