Phil_G
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I'm also fitting out a ripmax spit & I spent a lot of time researching power options. The one I finally went for is this: Turnigy-c35-42-1100kv-brushless-outrunner-450w-304-p At the time Rob had none in stock, so after waiting several weeks I confess I broke my allegiance to GC and went to RCtronics. I decided on an 11x7 folding prop & spinner from Gliders but went back to GC for a 3s 3000 Loong-Max lipo which fits perfectly between the standard battery rails. The esc is a 60A Pentium also from GC. I havent finished it yet so I cannot say if these were good choices or not, but I hope this is of interest Phil
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How about those charcoal-burning hand warmers, they last hours and are hotter than the heat pad type. Dont open them over your best carpet though (at least not if she's watching) Ive had a couple for years, they came from a fishing-tackle shop, but I've seen them on flea bay too. Cheers Phil
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2S lipo for reciever battery
Phil_G replied to Andy Freeman's topic in Gliders and Gliding - General Discussion
Sorry chaps, as often happens, good intentions taken the wrong way, I humbly withdraw & revert to silent lurking. Cheers Phil -
2S lipo for reciever battery
Phil_G replied to Andy Freeman's topic in Gliders and Gliding - General Discussion
Sorry to barge in but this thread has some slightly strange replies and I feel compelled to respond... First of all a 2S lipo fresh off the charger will hold 8.4 volts which, regardless of how quickly it might begin to drop, is far too high and will most likely do some damage. People confuse damage with failure - overvolting can easily cause damage but may not cause immediate failure. I'm surprised that the 'nameless purveyor' should give this advice. Re 'thinking lipo single cell, it has just enough juice but not enough capacity', a switching regulator will give you more capacity from a 2S pack but also adds to the expense, weight, and its another box to bury in the tiny Fox fus. A linear reg (ie 7805) wont give you any capacity increase from 2S. If the single cell voltage is ok but capacity is a problem, then surely the second cell would be put to better use in parallel with the first, or just make it easy and use a single cell of suitable capacity... many Fox users (inc me) are running a Corona synth rx and 3.6g servos off a single cell with complete reliability, although obviously not all sets are happy at this voltage. Re A123's, (we are still talking about an 80 gramme AUW glider aren't we?) their CV float is 3.65v so fresh off the charger a pair will read 7.3v which IMHO is also too high, yes they will drop to 6.6 which is better but still high and by then damage may have occurred. Again, 'damage' isnt always 'immediate failure', just because it works doesnt mean that no damage is being done. Amongst other things I teach BTEC electronics, and one of the course topics is 'reliability'. Running vdd within spec is a necessity for a reliable system. I hope this comes over as helpful I dont want to knock anyone or 'stir it up', although I do think the proprietors advice was at best 'suspect'. Maybe he meant to say 1S but said 2S. Cheers Phil -
My son is learning to fly on a Wot Trainer, its an excellent flyer and hands-off stable. His uses an OS46LA which is lower on power than most 46's so I think a 40 would be ample. Other than take-off, it spends most of its flying time at around half-throttle or less. Chris Foss made his name as a glider designer (I've flown with him a few times at SSA meetings years ago) and the Wot Trainer glides very well, in fact the approach can seem never ending so expect to overshoot and go around a few times until you get used to it. If you opt for electric, I'd say practise a few dummy landing approaches before the battery gets to low for another circuit. In a few mph of headwind, you can hover it in to an on-the-spot landing. I'm not sure about electrifying this one, I do fly electrics but I think I'd use a glow 40 or 46 if this particular plane was mine. I assume by 'petrol' you meant a conventional glow engine as 'petrol' is a whole nother can of worms, radios rarely enjoy anything that sparks! Let us know how things progress Cheers Phil
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one version - instructions another heres one heres another and another yet another enough? My own Fox is buried somewhere one or two of those threads.... Cheers Phil
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Sorry, my sense of humour tends to wander off on its own occasionally. But I did manage to find one today at Model Shop Leeds so all is well with the world. Happy Christmas everyone! Work starts in ernest for us tomorrow, and doesnt slow down until Jan the 3rd (we're a boarding kennels so Christmas & New Year is the busiest time of year for us) so no flying or building here for a while! Cheers all Phil
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Been to WH Smiths for the mag, I too found that pages 34-42 and 91 to 98 were missing, also missing were pages 1-33, 43-90 and 99 onwards. The front cover was also nowhere to be seen, neither, come to think of it, was the back. Decembers was stll on the shelf though. Hmmph. Phil
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But theirs works out to £30 for 10 sheets of 6mm, whereas B&Q is £11.88 for 10 sheets... Phil
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Be aware that some of the thinner stuff is very flexible, spongey stuff, - in fact it comes in rolls - make sure you get the semi-rigid stuff we use for shockies etc Phil
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Someone posted about a flatbed hot-wire sheet splitter, he made 2x3mm or 4mm & 2mm from 6mm IIRC. It was just a hot wire held 2mm above a flat board set at a steep angle such that the depron sheet slowly dropped through the wire by gravity. I cant find the post now, maybe it was on RCU. Might even have been on youtube as I remember seeing a video of the cut. Worth a try? Cheers Phil
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Info for anyone in the North, B&Q at Killingbeck (Leeds) have 5 packs of Floormaster foam left after I just took two today. Phil
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Paul, after hearing so many versions of this story I asked to speak to the stock guy at B&Q Castleford/Glasshoughton, who told me this: The B&Q stock control system normally tags it as 'no longer available' but thats just a flag, it doesnt mean that literally. Stores dont normally carry stock but that it IS always available to order through their 'orange team'. Its not easy stuff to stock as its so bulky and fragile. Any actually in stock is just whats left from a previous customers order - eg if a customer orders 5 they will buy in 10, leaving 5 for us. Once they are gone, its up to someone else to place an order, paid for in advance. So, thats what I was told and his advice seems to hold true - stores in this area have had new stock at least twice in the last month... Keep looking, it does appear from time to time, or you could order it. If the assistant says it is 'no longer available', try to find the stock expert, he will know the system better & should be able to get some for you. Cheers Phil
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Best new vendor on the scene: Giant Cod !!!
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Is that THE Peter Christy of Christy Mixer fame or am I just showing my age again? Phil
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What causes a motor to screech?
Phil_G replied to Bob Cotsford's topic in General Electric Flight Chat
If I remember correctly those Emaxes need high timing, but I may be wrong. Set the esc to high & try it. Cheers Phil -
Its to the original plan, yes its very easy to build & fly so they should be ok with it... the gear is a cheap ebay 4ch 35mhz rx and 2x 3.6gm Giantcod servos, so cheap to equip too! I'll PM details to you. Pete, those Mig antics are awsome! How on earth do you keep yourself oriented when its pirouetting on its axis like that? A bit too hairy for me I think... Sorry I've not been around, been away for a few days, but keep the ideas coming please! Phil
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Click on the Tree icon Pete, then the thing that asks for the URL actually has 3 tabs. The 3rd tab is for photos from your computer, so click on that tab, then browse for the file. If you dont have an 'Album' you might have to give a name for one. Click 'Upload' to finish. Clumsy but it works! Thanks Phil
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Thanks Pete The thread is in the "All things Flying" section. Timbo has posted there so he should recall seeing it. Sorry I thought I'd left a link for you... your builds sound really cool, I'd like to hear more about the 'double glazing' thing... it would be nice to keep all the posts together though so heres a link to the original thread: here it is Cheers Phil
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Sorry, no, I just did 'google images' for 'flight box', several came up, that was just one... Phil
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My last Sharkface was around 1970 and with single channel radio it weighed 3 times as much as this new one, my Cox Babe-Bee could hardly lift it! Anyway, first time out was dry but very windy - and cold! Quick 10 mins on the Wot4 to get the thumbs going, then out with the Sharky. From a hand-launch with the motor on about 1/2 throttle it climbed away straight as a die, no trim needed at all! Just nicely responsive, quite a wide speed range but no pitching with power on/off, and a reasonable glide. Got about 10 flights in that day, alternating between the Wotty and the Sharkface, I have to say though that although it flies well, its not much like the original - quite sedate and stable. The last landing of the day was like a harrier from about 15 feet, no forward movement at all into the wind, it just slowly drifted vertically down like a snowflake! It was far too windy really for a foamy but fun all the same. Flown regularly since & I managed to get some video in our dog-walking field (we're a boarding kennels): B&Q Floormaster Sharkface Video Flies really well on about a third throttle, which is about 25 watts, and a 500mah 3S seems to last ages. On full chat its a bit lively for a small field. Its quite durable too (as you'll see!) The file is 17Mb so depending on your link speed you might have to 'right-click' 'save-as' to view it. So, buy B&Q foam, have fun, and report back! Cheers Phil
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B&Q Floormaster foam is intended to insulate & support laminate flooring. Its very much like depron but has one surface very slightly harder, like a thin skin effect. The foam comes in a pack of 10 1.2m x 0.5m x 6mm sheets for £11 so its economical stuff to play with. Cuts easily with a fresh blade and glues ok with Cyano/kicker, hot-glue or Por. I know at least a few people have been building with it but nothing comes up in search for 'Floormaster', so lets start a thread to compare notes! Ok, I'll kick things off - anyone remember Eric Clutton's "Sharkface"? This one is entirely from B&Q Floormaster 6mm insulation, to the outline & dimensions of the original 1965 plan (thanks Vintage1!). Flying weight is 6oz, on rudder/elevator/throttle, 350mah 3S lipo & a Typhoon micro 3/3D. Its entirely covered & decorated with coloured parcel tape which added just over half an ounce. The tape was from ebay: coloured tape I continued the line of the upper rear fus to the 'spar' position, where the wing is cracked & undercambered by 1/2", then from the 'apex' where the spar would be it tapers down to the original fus outline. There is no spar as such, but I added a 1/4" preformed balsa Leading Edge with Por. Wings are joined with 1" of nylon soaked in PVA. The Sharkie used about 3/4 of a sheet including the obligatory 'make two left-hand fus sides' Doh! Continued...
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