Frank Skilbeck

I'd suspect the battery, friend has QX7 and easily gets a full days flying out of it. Put your battery on a discharge/charge cycle, say 300ma discharge cut off at 6v, 600ma charge, for 2 or 3 cycles and see how the battery performs.

You could run a lead between each receiver from a spare output as additional redundancy, without the signal wire if you are using spare servo channels. Sort of like a ring main. Not sure how Hott rxs work but on MPX receivers if you used the BD port the receivers are then linked together, so also provide signal backup too, check your hott rxs might have a similar function.

Paul for redundancy on both receivers you'd need to power them both with the two receiver batteries, if it was me I'd use a Multiplex or Powerbox safety switch, Multiplex do one with dual outputs so you could use one to each receiver. For a plug in only option then ideally you'd need a diode in each power supply, then Y lead them together and then a feed to each receiver.

If you've got a current sensor you could use telemetry to alert you when you approaching the max current limit.

But they don't end up in the bin or charity shop, they are recycled several times until something expensive happens and then they are often broken for parts. Not like in the good old days were they turned to rust in front of your eyes.

Sounds like a 200v or ft would be ideal 😁

Brian, thanks.

Good suggestion, and I have a couple of damaged motors I could liberate some batteries from. Here's the model and remains of the original hatch.

That's the 2nd option, but if I need to get at the battery quickly I was thinking the 1/4 turn would be easier. Also plastic might be a better option than metal on a water plane.

Anybody used the SLEC 1/4 turn hatch catches, need a secure hatch catch for my flying boat where the hatch is just in front of the propeller. Don't want to use the spring type hatches as the slot would let in some water, we did make a quarter turn one that pushed to locating pins out, but it came loose on the last flight and the hatch went through the prop, fortunately on a take off run not when it was in the air! The SLEC 1/4 turn ones https://www.rcworld.co.uk/acatalog/SLEC-Hatch-Catch-Pk2-SL004.html look like they would be ideal, but not if the hatch is easy to pull off without turning the screws. Thanks

Interesting article here, https://www.carbonbrief.org/factcheck-is-solar-power-a-threat-to-uk-farmland/ basically solar farms take up less land than either golf courses or airports and less than a 1/70th of the land devoted to biofuels, using the same land for solar to charge electric cars would deliver > 48x the mileage.

But ironically if a farmer wanted to cover all his buildings with panels he can't because his grid connection won't take it. The solar farms round here do use 4 legged woolly mowers to keep the grass trimmed though.

Is this a new Rx? Could it be a clone?

Fuel Cell, as in a hydrogen fuel cell to generate electricity.

Or Exxon when their scientists discovered CO2 emissions were affecting the environment set in process a scheme to discredit climate science. https://news.harvard.edu/gazette/story/2023/01/harvard-led-analysis-finds-exxonmobil-internal-research-accurately-predicted-climate-change/

They do, it's used to run the generators and heating system (to heat the oil/water mix to.help it separate and stabilise the oil), where there is a gas pipeline it can be exported, if.not.it's often reinjected, my last project.had 2 x 1 MW compressors. A small flare.is kept lit for safety reasons in case of a plant blowdown. Not in all parts of the world however, big issues in parts of iraq with flaring off high H2S gas, the resultant SO2, causing health issues. In the North Sea produced water contained radioactive salts, we had specialist contractors to decomtaminate equipment before maintenance entry.

Yep true and depends on what you use to generate the power, in the UK the average CO2 power generation is around 162 g per kwh, my Mini is currently doing 4.9 miles per kwh, 7.9 km, so around 21g per km, my 2litre diesel (52mpg) 119 g per km, the small petrol car the ev replaced was rated at 130 g per km tailpipe emissions. BTW a combined cycle gas turbine generation plant has a thermal efficiency of over 65% an ICE engine less than 25%.

The example I quoted were just for extracting the oil, transport and refining are on top of that. Yes lots of products made from oil, seems a shame just to burn a lot of it. In the 1930s it took around 1 barrel to extract a 100 barrels, now it 1 for 4, also to call production facilities oil production facilities isn't strictly accurate a more apt description would be water extraction facilities, around 3 barrels of oily saline water processed for every barrel of oil produced. The stuff is getting harder to extract, but the industry is very well developed.

Lithium batteries may be the betamax and in a few years time lithium batteries will probably be old hat, but it will be different battery chemistry that will replace them https://www.thomasnet.com/insights/7-lithium-battery-alternatives/ hydrogen by electrolysis is less efficient than using the electricity to charge batteries. BTW producing oil releases quite a bit of CO2, typically today to produce 4 barrels of consume 1 barrel, last project I worked used around 3 million cubic feet of gas per day, for power generation and heat, for an average oil production of 15,000 barrels of oil per day (fairly horrible heavy stuff at that). So while many note CO2 in lithium mining they overlook the CO2 released in building and operating oil facilities.

Make sure both transmitters are on the latest firmware, we had an issue where couldn't link a DSM2 dx6i with a Dx6e, updated the firmware on the Dx6e and all was well.

New IC and EV prices up so 2nd hand prices up too. But just showing you can get a reasonably priced nearly new EV, and still had the balance of the 8year battery warrenty and RAC roadside support, looking on autotrader a similar age and mileage IC Corsa is around £16,000. Previous car was a 2010 i20, 65,000 miles on it's 3rd clutch and AC needed a new compressor, she's looking forward to the preconditioning in winter on her early morning starts.

Was at Much Marcle yesterday, good show and good turn out, full size Spitfire flyby 👍 Don't think the trade was overly happy with 3 model shows over 1 weekend, but reasonable turnout at Marcle.

My Daughters 14 month old Corsa E was £17,000.

Just for comparison, a litre of diesel contains roughly 10 kwh of energy, so a gallon 46 kwh, so the equivalent would be around 220 mpg if it used the stored energy as efficiently as the EV.

Anybody remember the old Stanley cardboard aircraft, I had the apprentice with an OS40FS about 40 years ago. Was quite a robust model and flew well. BTW these drones are Australian.