Stephen Jones Posted August 19, 2008 Share Posted August 19, 2008 Hi all, just thought i might share my photos of my latest project iam building a fantrainer , i built this one some years ago with a cox .049 for power it only just had enough power to fly , so now with smaller lighter radio gear and a brushless motor i have decided to give it a retry.heres some pics, Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted August 20, 2008 Share Posted August 20, 2008 Looking very nice - keep us posted - what powertrain have you settled on ? Quote Link to comment Share on other sites More sharing options...
Ken Latam Posted August 20, 2008 Share Posted August 20, 2008 Are the plans available somewere?Ken Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted August 20, 2008 Share Posted August 20, 2008 I like that Stephen Quote Link to comment Share on other sites More sharing options...
birdy Posted August 20, 2008 Share Posted August 20, 2008 Good lookin' model you have there! Quote Link to comment Share on other sites More sharing options...
Alan Gorham_ Posted August 20, 2008 Share Posted August 20, 2008 KenPlans used to be available from ASP/Nexus/Magicalia plans service, but I can't find them listed on the website.The original design was done by Paul Willenborg for MAN magazine in the USA. Plans are definitely still available from this source as I ordered myself a set a couple of months ago.Website is https://secure.rcstore.com.Go to plans sections, then planes, then ducted fan and the plan is number FSP01901 X01901price $14.95. Hope this helps. Stephen, lovely looking build. Have you seen the designers own conversion thread on RCGroups where he used a Mega 16/15/4 inrunner? Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted August 20, 2008 Author Share Posted August 20, 2008 Hi ken ,no i have not seen the designers own conversion thread on RCGroups i tried to find but no good .Would be nice to see though could you send link . the plan FSP01901 X01901 does seem to be the same although i got mine as a free plan in radio scale in 1991. Quote Link to comment Share on other sites More sharing options...
Steve Adams Posted August 20, 2008 Share Posted August 20, 2008 Hi Ken, I have looked through my magazine archives,and can confirm there is a Fantrainer model done as a free plan in the October 1998 Electric Flight International magazine( now called Q&EFI) It should still be available as a back issue,as Traplet publications hold most issues the model is around 36ins for a speed 400 motor,if you cant get this issue,i beleive they have the plan at about £5 add p+p hope this helps you,model is coming along very nicely by the way stephen! Quote Link to comment Share on other sites More sharing options...
Alan Gorham_ Posted August 21, 2008 Share Posted August 21, 2008 Steve The thread on rcgroups is here: http://www.rcgroups.com/forums/showthread.php?t=65703.The MAN plan I quoted IS the same plan that you are building from, except that it was originally published in MAN many years before it was published in RCSQ.Another interesting point to note is that the Magicalia plans service still offer the clear plastic moulded canopy to fit the MAN/RCSQ plan you are building, even though they don't offer the plan anymore. Go to www.myhobbystore.com and search on CANRC1664CANRC1664 - £7.45 inc. 17.5% VATNote that the Traplet fantrainer is a different design completely and the canopy won't fit the model being discussed in this thread. Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted August 21, 2008 Author Share Posted August 21, 2008 Thanks Alan,I read that thread from start to finish a very interesting read and it looks as though ill be on to a winner with this model. 90 - 100mph he was getting from his setup and that suits my flying style too PS i think that canopy may well be the same so i`m going to give it a go cheers Alan for that. Quote Link to comment Share on other sites More sharing options...
Alan Gorham_ Posted August 22, 2008 Share Posted August 22, 2008 Stephen The canopy IS definitely the same. The mould for it was made by a British modeller called Alec Cornish-Trestrail so that the clear canopy could be offered as an accessory for the free plan. Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted September 2, 2008 Author Share Posted September 2, 2008 Hi again ,My fantrainer by Paul Willenborg has moved along the construction stage a bit further now all parts have been constructed. And the canopy from www.myhobbystore.com has arrived and is the correct size.I have built it so light i have decided to glass the front fuselage and very nice it looks too for my 1st time ever glassing anything. I decided to glass it to give extra strength and so i can give it a nice paint job too.Being electric i can go to town on the paint job as i never have before .Although i have not yet covered the main wings in tissue and dope yet i have weighed all the parts including radio gear and 1500ma lipo and a Kmax bl2210/30 motor and it only weighs 24oz that's 10oz less than paul willenborg`s electric conversion came to and 2oz heavier than his cox .049 powered model . So i guess i will need a 150 watt motor Hummm , now what color paint job should i chose silver wings may be hard to see in are gray Sky's Quote Link to comment Share on other sites More sharing options...
jan brilman Posted September 17, 2008 Share Posted September 17, 2008 Nice job!I have the plan from Paul Willenborg.That looks different from the plans that Stephen has on the table.Paul says he's working on plans for a larger version, almost ready, but it is hard to get into contact withy him . . . jan brilman Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted September 19, 2008 Author Share Posted September 19, 2008 Hi again,my plane was a free plan from , i think radio scale . I am still waiting for a motor before i do any final assembly the one i ordered was an out-runner . As i am new to this i received an out-runner however it is meant to be fitted on the inside of the model . How confusing all i wanted was a motor to fit on the outside of the model and run in reverse as the prop i have is a tractor and will be pushing the model along . Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted September 21, 2008 Share Posted September 21, 2008 Hi Stephen,Are you the chap from R/dale I was talking to today (Sunday) ??CheersDave Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted September 21, 2008 Author Share Posted September 21, 2008 hi Dave,yes Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted September 21, 2008 Share Posted September 21, 2008 Let me know if your stuggling with the motor and ill see what might be upto the job. Dunno if you saw my liitle Su-27 later that day but that will get 100mph on a similar weight aiframe . I take it its not a "true EDF" ..its more of a small prop in a shroud kinda thing ?? The motor I had in mine was a grayson driving a 6x4 ..what size ducting is in the fantrainer ..I presume smaller tha 6" internal ?? Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted September 22, 2008 Author Share Posted September 22, 2008 Hi dave,Yes its " more of a small prop in a shroud kinda thing ?? " the 3 bladed prop was a 6 x 4 now cut down to 104mm to fit into the 110mm duct nearly 4.5 " . Paul used a mega 16/15/4 but aim not shure wot the spec is for that motor just that it costs £53 which is a bit pricey for me Quote Link to comment Share on other sites More sharing options...
Foamie Dave Posted September 23, 2008 Share Posted September 23, 2008 Never used one either but these are the Mega specs. Weight: 76g Dimensions: 28 x 36.4mm Shaft Diameter: 3.2mm No Load Speed: 2200rpm/1V Maximum Current: 25A Resistance of armature: 22.5 mohm Number of Poles: 6 Number of Winds: 4So basically you want a 2200kv-ish motor that will happily spin a 4in prop. First check your 1500 lipos are rated at 20c which is about the norm these days so you can drag approx 30amps from them. If they're only rated at 10c you can only expect to see around 15amps max so you could damage them if you push them further. Even something like a 2212-06 (2200kv) runs better on a slighly bigger (6x4 or maybe 5x5) prop but when you're getting down to a 4" dia youve not got much blade with a conventional prop. Might be ok with a 3 blader ??How about putting an EDF (ducted fan) in there instead. You can get a basic one for half the price of the Mega motor and it'll save you the trouble of making a duct . Pretty shure you can get a complete 68mm EDF for under £30 complete with motor that should give you ample thrust on around 20 - 25 amps. Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted September 23, 2008 Author Share Posted September 23, 2008 Hi Dave,Nar , don`t fancy putting a EDF unit in there seen it done and it looks crap and did not have a great performance either . Although i am looking at making my own 5 bladed fan to go in there just like the real thing , i have made the blades i just need to set them into a disc and test when i receive my motor . Not shure wot i am going to receive from go brushless yet as i sent back a motor which is ment to be fitted within the model. Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted October 15, 2008 Share Posted October 15, 2008 hi Stephen. may be I've miss-understood something here but surely a brushless motor will run whichever way you want and don't most if not all outrunners have a shaft which can be made to protrude from either end allowing an external fitting in a pusher situation. Also a quicklook at this may be benificial as I reckon this motor might be suitable for your purpose. high kv for the small prop, and will comfortably handle 150w on a 3s lipo, they are a good motor I've got a few from this range and non have let me down yet hope it helpsregards phil Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted November 3, 2008 Author Share Posted November 3, 2008 Hi ,sorry about the delay ive been away , then busy doing jobs around the house , and then to top it off the whole family got ill . Any how yes ive got that motor thanks and is running the prop at 20,000 rpm peak .and pulling 135 amps not shure it will be enough though .after taking it to the field my pals reckion it will fly it although might not be fantastic. Model still needs painting and servos fitting hoping to get that finished this week , i have cut down a 8x6 prop to see if will be any in provement on the 3 blader . ps more pictures to follow Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted November 3, 2008 Share Posted November 3, 2008 A typo surely?...135 AMPS! Quote Link to comment Share on other sites More sharing options...
Stephen Jones Posted November 5, 2008 Author Share Posted November 5, 2008 Opps yes,135 watts, but hang on ....... ive re`tested on a fully recharged battery , 150 watts ....but....i cut down a cheap two bladed 8x6 prop to suit my duct and was pulling 170 watts .I have started painting the plane now so when the paint job is finished and servos in place i will re test to see wot i can come up with .Oh and phill the motor i sent back was a helli motor with an integral fan on which meant i could not reverse it , however it did boast better kvm . cheers for the help so far guys, Quote Link to comment Share on other sites More sharing options...
Phil Winks Posted November 5, 2008 Share Posted November 5, 2008 Ahh ha all becomes clear Stephen and as a heli motor I'm not suprised at the enormous Kv. The power output sounds sufficient now. Though I can't wait to see the finished product. Quote Link to comment Share on other sites More sharing options...
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