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Everything posted by PeterF
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Toto, It looks like you have put the Velcro on the flattest side of the ESC with the label. I believe this is wrong and I always have the flattest side open to the air. The flattest side is the heatsink for the FETs, the component that blew in your previous ESC. The heatsink needs to be open to reject heat. You have put Velcro on the heatsink which is a good insulator, a recipe for overheating. If you look at the ESC you dismantled, the one side has various components with a plastic cover to protect them. The other side has the FETs then the thermal heat transfer compound with the heat sink plate.
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I have not seen any company that will insure your equipment whilst it is in use. The insurance is third party so if your model injures somebody or damages their property such as flying into their car or house. You can also cover it under house contents insurance for fire and theft. If you crash your model whilst flying and damage it then that is not covered and repair / replacement costs are on you.
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Noooooooooo. Hope you get it sorted, it is too good to leave in the repair shop.
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I have a pair of the RCGloves tjat I purchased many years ago when the price was reduced to circa £30, still going strong, used them today for 5 flights.
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Is there a list anywhere of recognised flying sites in the U.K. ?
PeterF replied to kevin b's topic in Flying Sites and Clubs
This web site has a list of clubs / flying sites but I do not know how comprehensive or up to date it is. https://www.rc-airplane-world.com/rc-airplane-clubs.html -
Enforcement of model flying regulations
PeterF replied to Martin Harris - Moderator's topic in All Things Model Flying
Being happy with park flying is not something that exists in a majority of modellers in the club I fly at. Being limited to a 50" span 400Watt foamy flown within a 150m bubble from take off point would offer no challenge and little enjoyment to many of us. What is all this almost defeatist attitude to learning and developing new skills in retirement. I am retired and in my 60s and since retiring I have taken my B test, Club Examiner test and just been taken on as a Chief Examiner by my area. I have built and maidened my largest plane to date, a 25lb 7ft span EDF Vulcan and several other larger scale models, tried thermal soaring taking my 12ft span glider to >2000ft. My flying skills have never been better and I started flying in my 30s. -
CAA Call for Input: Review of UK UAS Regulations Aug 2023
PeterF replied to MattyB's topic in All Things Model Flying
I have made my response, I will bring it up at my club night on Jan 4th. As former Club Secretary I used to keep a close eye on all this type of thing and pass it around, to the members and bring it up at meetings. I am not sure that this is happening to the same extent now so I will bring it up. -
What I have found to help lifting is to print a wide brim around the object about 1cm, for components like wings this needs to be inside as well as outside. I suppose it is like a 1 layer raft. For the object to lift it has to tear off from the brim, as the brim is wide and flexi for the object to lift it would need to pull a vacuum (assuming the brim is not porous).
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Nick, You need to be more specific on the Turnigy motor as there are several, which type and what is the Kv. The only one HobbyKing currently lost is linked below but there have been several over the years. Also, do you have any idea on the weight of the plane in flying condition otherwise I will guess at something like 14lbs. If you can confirm these then I can make a recommendation. https://hobbyking.com/en_us/turnigy-l5055b-600-brushless-outrunner-600kv.html
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Green models Super Tiger Moth Conversion to Electric
PeterF replied to Nick Funnell's topic in General Electric Flight Chat
I have an 1/4 scale 88" span moth that is electric and very scale like, a bit larger than your but should provide some guidance. For things like loops it definitely needs a shallow full power dive first and happily flies for 15 minutes if I do not do too many aerobatics. Flying weight 18 lbs 2 oz inc batteries Motor Hyperion ZS4035-10 Kv = 354 (discontinued) 100A Hobbywing platinum ESC 2 x 6S Overlander 3900mAh Supersport batteries in parallel giving 7,800mAh @ 6S 18 x 10 wooden Falcon prop (scale diameter) With full batteries the set up runs at 6,400rpm and draws 1700W (81A @ 21V) This is about 95W/lb which is just right for scale like flight. -
For a given flow area, the friction will be higher because there is more duct wall so the back pressure on the fan will be higher which will reduce the air flow a little but it will probably not be a problem. Consider the extreme of a slot 300mm wide and 2mm tall. I did obround (oblong with round ends) outlets on a B2 stealth and measured the thrust vs circular and the difference was small.
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As above, if you have only 1 battery then use the Wattmeter between the Y lead and the ESCs one at a time so you know what the motors are doing individually because on a twin it is important that they are working the same or close together. When you do this, it is also important that you have both motors working as the current drawn by two motors will make the battery voltage sag more than with just one motor running. You should also have a tacho in your equipment because likewise you need the motors to be running at similar rpms.
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Outerzone has a plan for a 66" Tiger Moth but from Premier. It might be worth downloading it just in case there are any similarities or if companies changed hand etc.I https://outerzone.co.uk/plan_details.asp?ID=14309
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Maiden Flights - how do you take yours?
PeterF replied to leccyflyer's topic in All Things Model Flying
I always do my own maidens, I find it the best cardio exercise going.😁 -
Forum members' new models: Let's see them.
PeterF replied to Paul Marsh's topic in All Things Model Flying
You will like the Element, I have had one for a few years, lovely flier. I get mine regularly above 2,000ft on good summer days but it is not just for summer, I have been up a few times in winter on those rare calm, sunny, high pressure winter days and last January had it close to 1,000ft on one trip to the field. -
Deluxe Materials sell a wide range of glues for many materials. Their charts and guides can be found at the link below. Useful reference for finding a glue to suit different plastics. https://deluxematerials.co.uk/collections/glue-charts
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Not sure about thoughts of a disappearing hobby, I have taken and passed 7 modellers for their A tests in my club this year and there are still some beginners coming along. Never had it so busy for training. Club membership is between 50 & 60 so that is a good ratio of recent new starts.
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I buy bearings from suppliers on ebay or bearing boys for my various motors. Strip the motor down, remove the bearings and measure them with a vernier / caliper, ID, OD and width then find suitable bearings on line.I https://www.bearingboys.co.uk/Miniature-Bearings-1324-c
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I have always been sceptical of these type of high capacity AA cells. Because they have high capacity they are seen as being very good but I have always believed that their current capacity is limited. The Overlander datasheet states maximum discharge current as 1.15A, that is 0.5C. Therefore, as we undoubtedly discharge them at higher rates they will age quicker than expected. Just to confirm, I have not found a delay function on the low RX voltage, but you could probably set an alarm function up with the delay if required.
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CAA Call for Input: Review of UK UAS Regulations Aug 2023
PeterF replied to MattyB's topic in All Things Model Flying
Sign up for BMFA news so you get an email when there is a new news article. -
Better image of the Fans screwed to the bulkhead from the Chris Golds Sperrin build. Too late to edit the original post.
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I have used various techniques, blob of bathroom silicone sealant to hold fans into foam where there was no mounting lugs, having my son who has a laser cutting business make up some mounts for fans without lugs, screwing the fan lip to a bulkhead per a Chris Golds plan, and using lugs. All work OK.
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CAA Call for Input: Review of UK UAS Regulations Aug 2023
PeterF replied to MattyB's topic in All Things Model Flying
Completed mine from the POV of self build model flying using the BMFA prompts but my own words. As others have noted answering "no" to some questions where BMFA have a more neutral stance. -
From another hobby I know you can get carbon fibre arrow shafts in 7.5mm OD but have never bought these myself. I have attached a link to an on line shop with these. I am not sure if you can get just 1 or 2 shafts rather than a full set of 12 made up arrows. It may prove a starting point if you think the ID is suitable. https://uk.huntingdoor.com/products/white-barred-33-inch-fletched-pure-carbon-arrows
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CAA Call for Input: Review of UK UAS Regulations Aug 2023
PeterF replied to MattyB's topic in All Things Model Flying
I recognise that BMFA is covering a broad church with the BDF but for the traditional model flier that existed prior to drones self building or fitting out ARTFs and who has continued in the same vein, we have not followed or absorbed all the different drone type criteria from CAA and within the Article 16 authorisation we have not had to absorb all the different categories. A response for this type of traditional modeller making up the bulk of the membership where concerns are high about further intrusive legislation may have been useful.