RE: Seagull Piper Twin Comanche
Hi, [quote] Would like to not have to chop up the cowls[/quote] What about a couple of RCV 60 ??? http://www.hallamhobbies.com.au/index.php?ID=4&DID=7040 or electric ! Alain
Posted on: 9/7/2012 4:04 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11220466

RE: Seagull Piper Twin Comanche
Hi, Joe [quote]I have a pair of broken-in OS .72 4-strokers but don’t know (yet) if they will fit. [/quote] OS 72 just looks to be an over-bored .56 ... ( same stroke, also as the .62 !!! ). [;)] Sooo ... no problem for them to get into cowls , nor weight problems ... Alain
Posted on: 8/29/2012 4:05 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11210014

RE: Seagull Piper Twin Comanche
Looks the choice is [b]Retracts and single engines OR fixed gear and Twin engines ... [/b][;)] but i'm still a bit afraid about weight ... even with your TOPP fiberglass one [:o] Alain
Posted on: 8/10/2012 5:38 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11187988

RE: Seagull Piper Twin Comanche
Hi, Korvette Awful idea [:(] : just compare the weight of a single .72 with your .90 Twins ... the answer is here [:)] ahhhh ... if the .60 twins were neot so heavy, it could have been a nice idea ! or try a couple of Vintage ROSS .60 Twins .... [8|] Alain ( who uses " only " a couple of OS FS56 aboard .... [:D] )
Posted on: 8/10/2012 5:16 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11187965

RE: Seagull Piper Twin Comanche
WOOOHOOOOO !!! [8D] looks really fine. superb flying attitude. I do agree for downthrust : photos show very little. BTW : what about the flying speed ??? looks the .46's are giving a lot of power. Alain
Posted on: 5/12/2012 12:07 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11077730

RE: Seagull Piper Twin Comanche
[quote]ORIGINAL: c_nut I am not overly happy with the supplied mechanism, it works, but the springs end up fighting the doors and so they close at the front but end up bulging open at the back. I will be using Nicks idea to modify my gear doors as soon as my gear door sequencer arrives. [/quote] Hi, Craig looking at the different pics available on the web ... the main gear shows two versions: 1) double fork holding the two sides of the wheels axles 2) " mustang style " with the wheel facing outside ( facing wing tips when out ) for the " mustang style " ... no need to have modified the gear doors ... [:(] yes, you're right ... I'm somewhat late ... [:-] Alain
Posted on: 5/10/2012 11:57 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11075780

RE: Seagull Piper Twin Comanche
I do agree ... probably the simplest method that won't induce any weakness ... the cleanest too !!! Alain
Posted on: 5/5/2012 5:53 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11069219

RE: Seagull Piper Twin Comanche
[quote]ORIGINAL: c_nut what I'm trying to decide is what to do about the length difference between the mounting point and the wheel well cut out........ are you going to move the mounting point out toward the wingtip or are you going to recut the wheel well closer to the fuselage ?????? Craig [/quote] much easier to modify a bit the wheel well !!! ( the awful plastic bit will be replaced by "classic" balsa fairing ... ) Alain
Posted on: 5/5/2012 5:23 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11069193

RE: Seagull Piper Twin Comanche
Hi, Cnut Nice spinners !!! Halas, by here, they are out of stock " for a while " [:-] I finally turned to a couple of Tru-turn ... [i][b]relatively[/b] [/i] affordable , found on Ebay ... For the retract problem ... 1) front gear - a 105 ° action ( http://www.advantagehobby.com/124072/EFLG411105/?cat=691 ) is a simple solution, with limited [i][b]eventual[/b] [/i] sanding of the mounting blocks ... one must check everything closer as genuine wheels are clearly oversized ... [:-] 2) main gear - placing some carbon fiber to strengthen the existing ribs before sanding them looks quite easy and strong enough ... [;)] Alain
Posted on: 5/5/2012 5:00 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11069171

RE: Seagull Piper Twin Comanche
Hi, Craig Thanks for the tip ... Found it AVAILABLE ( [8|] ) here : http://www.stevewebb.co.uk/index.php?pid=EPH-SUL01&area=ACCS Alain
Posted on: 5/1/2012 4:54 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11063778

RE: Seagull Piper Twin Comanche
Nice job, Craig ... [;)] where do you find the "ultimate" spinners ??? I remember having seen some only from Tru-Turn ( ouch [:(] 120 US$ for a 2" pair ... big hole in the bank account [&o] ) Alain
Posted on: 4/30/2012 7:11 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11062403

RE: Seagull Piper Twin Comanche
[quote]ORIGINAL: c_nut Well those 9 plugs just became 10 plugs (I forgot about the retracts) I've heard good things about the multiplex plugs, I tried a multi-pin connector on my 96'' Cessna but removed it after I noticed it not connecting sometimes. the general consensus was that I needed gold plated pins if I wanted a good connection ????? Your Thoughts Craig [/quote] Hi, Craig [b]Good quality [/b]connectors are generally gold plated - just a "flash", do not dream - ... ( try to avoid chinese junk [&o] for these ... ) I think Mouser , Farnell or DigiKey could provide good ones. you also could dismantle ( good quality ! ) informatics cables. If your connectors "sleep " in a cool and dry place, there shouldn't happen any problem ... even if not gold plated. My old 30+ Years Graupner C505 servos and C16 Receivers have NOT goldened plugs and I never saw any problem with them ... Alain
Posted on: 4/30/2012 1:14 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11062144

RE: Seagull Piper Twin Comanche
[quote]ORIGINAL: c_nut The rest of my day was spent on the age old dilemma of cowlings....... To cut or not to cut....... [/quote] " hot air output must be , @ least, twice the input section " ... [quote] I desperately wanted to avoid cutting an opening for the engine head [/quote] You could solder the glow heating wire on the connection pin of the glow plug ... I already did it ... [quote]This introduces yet another set of wires. There will now be 9 plugs to connect on each wing!!!!!! [/quote] You could try the Multiplex " green " plugs ( 6 contacts ) or DB9 or even DB 15 informatics plugs ... often used aboard big scale gliders [;)] and good behaviour against vibes ... Alain
Posted on: 4/29/2012 7:55 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11061139

RE: Seagull Piper Twin Comanche
Should be fine with a "point" ... [;)]
Posted on: 4/28/2012 7:39 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11060040

RE: Seagull Piper Twin Comanche
Craig, I received your mail address, but ... My mail comes back with " undelivered message returned back to sender " ... Alain
Posted on: 4/28/2012 7:34 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11060034

RE: Seagull Piper Twin Comanche
Thanks for the reply, Craig I'll keep on using the 56's ... as I do not have 52s ... With Bill's twinsync, there won't be any BIG dissimetry problems ... so over powering could bring more problems than solve any ... I'll be happy to send you the lighting system files ( PCB + Program + Proteus sim file ) ... if you give me a mail address ( Not enough room here ... [&o] ) I got the leds from http://www.befr.ebay.be/itm/5-PCs-10mm-40-1W-Watt-White-LED-300mA-390-000mcd-NEW-/370531149507?pt=LH_DefaultDomain_0&hash=item564560a6c3 and http://stores.befr.ebay.be/TopBright-Led-Store/4-8mm-120-W-G-B-R-Y-UV-A-P-LED-/_i.html?rt=nc&_fsub=19282860&_sid=190959565&_trksid=p4634.c0.m14.l1513&_pgn=1 the tail beacon led being a Luxeon 5W Side Emitting LXHL-DW03 ( Halas out of production now ... but equivalents available ) Alain
Posted on: 4/28/2012 7:12 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11060012

RE: New Twin Commanche ARF
+1 I exactly did what CNut describes ... front gear is 4 mm ( 3.96 ? ) dia ... so, I used 4 mm wire on its side. front damper is 4.5mm , so, I re- drilled it to 5 mm, and placed a 4x5 mm brass tube as a bushing ( locked on wire with Loctite 601 adhesive ) same job for main gear ... but with 5 and 6 mm for diameters ... decent Compasses [8|] have been made from an old PC supply aluminium heat sink ...
Posted on: 4/28/2012 6:25 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11059923

RE: Seagull Piper Twin Comanche
Hi, C_Nut I've a little question about engines choice ... Here I have ( brand new): - 2 OS 46 SF - 2 OS 56 FS Alpha - 2 Saito 62 - 2 Saito 72 From what I have read about the Comanche and my own experience ... even the OS46 are a bit Overkill for 11/12 lbs ... BUT the Seagull manual states 45 to 55 2 Strokes or 72 to 82 4 strokes. that looks enormous to me ... The videos available on the web show more a " fighter " speed flight than a " looking scale " quiet flight ... So I'm really tempted to use the smallest available, the OS 56 Alpha. The Saitos 62 being quite the same in terms of output ( but not sound ... [;)] ) Could you give me your thoughts about that ??? ( looks you choosed the OS 46 ...) Alain
Posted on: 4/28/2012 6:21 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11059947

RE: New Twin Commanche ARF
Hi, By the time, I also designed the lighting system for the comanche ( based upon a YTube video http://www.youtube.com/watch?v=4drCw66BGwU&feature=related )... Halas ... as .zip files can't be uploaded here [&o] ... you'll have to ask for the Processor files and drawings !!! You'll note there are 2 versions of the circuit : one for 4/5 cells supply and one for more cells or LiPos with an included voltage reg for the Pic ... [;)] shown model in pics is the one w/o regulator. Alain
Posted on: 3/15/2012 12:24 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10999530

RE: New Twin Commanche ARF
Hi, Thomas and Jimmy I' m assembling a Comanche at this moment ... Will be powered by a couple of OS FS A56 ( a couple of 2 Stroke 46 AX being overkill here ...) for the retracts, I used an E-flite EFLG 430 main gear with the 411105 nose gear ( 105° aperture ...) It has been easy to adapt the suspended genuine legs to those mechanisms ... and make aluminium honests torsion links [;)] Alain
Posted on: 3/14/2012 3:32 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10981358

RE: New Twin Commanche ARF
Hi, I Received mine today ... [:)] Really impressed ( note I've always built my planes from plans - kit or scratch - ) by the quality of the parts and the readable booklet. I do not like too much horns and little fittings ... but I also have 40 modelling years habits ... [;)] About the undercarriage ... looks to be serious ( cause YOU HAVE to Glue the blocks, due to the Retracts possible option ), here, I'll try to use an E-flite 430 model. Genuine Gear struts are fully and easily re-usable with retractable gear despite what an English Forum says about it ... I do not know if the writer once opened the box before writing that ... [:'(] I could add such a model diserves [i][b]you treat it Kindly [/b] [/i] .... [:D] motors ??? I Think a couple of Saitos .62 I have will do it ( .72 or .82 might be too much ??? ) driven through a "Twinsync" from Bill Wike ... Once more booklet is straight and clear about the different types of motors you can use. BTW ... Seagull painted both wing tips lights red [:-] ... Booooooo ... So ... as we say in french " just to be done now ..." [8|] Sure I'll have Nice dreams for this night ... [:D] Alain PS; Thanks for "Flynasa" photos and comments ... that triggered my decision !
Posted on: 10/5/2011 8:23 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10748077

RE: Eletronic engine syncronizer **SUPPORT **
Hi, Just some words about Bill's service : - I asked for a quote on May, 4Th - Bill answered me same day - I sent him Paypal next day - Parcel left the states on May, 11th - Received my couple of twinsyncs this morning ( two MORE Twinsyncs ... ) ah ... forgot to say ... I live in France ... and there's a Postmen strike here !!! Thumbs up ... at least. [;)] Alain
Posted on: 5/20/2011 12:14 PM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10531403

RE: Eletronic engine syncronizer **SUPPORT **
Hi, SR If I understand it well ... [>:] you have 4 Stroke engines ( looking they are Saitos ...) SO let's count 4 amps per Glow plug ... from that, you should use some .75 sq mm wire as a minimum not to reduce too much the voltage ( think to the voltage survey Bill placed ... [8|] ) no need to use different wire gauges ... personnaly I would use 1 sq mm ( easier to find Xtra flexible wire for measuring purpose ) from the batt to the glow modules and to the Glow Plugs. resistance will be .021 Ohms per meter ( 3 ft ) of cable ... so outer glows voltage drop will be ... 2 times * .021 ohms /3 * (2+3) feet * 4 amps = .28 volts ... becomes significant ! Alain
Posted on: 2/23/2011 5:12 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10357306

RE: Eletronic engine syncronizer **SUPPORT **
Hi, Deltatech From the other side of the Atlantic Ocean ... it looks if you do not have a VERY good friend in magazine's staffs it's no use to bring such a product review ... I'm really sad saying only the " magazine add-space buyers " are most of the reviews furnishers ( we call that Publi-revs, this side ...) Back to the Twinsync ... I made some adds on the fields ( also at the Nats !!! There were twins at Scale Nats !!! ...), gave all the necessary links, but never got any questions about this device ... The main problem encountered, I think, is some "uncontrolled" devices have made Electronicians some sort of Aliens whose products are totally out of the Flier's requirements or capabilities ... let's say [b][i]irrealistic[/i][/b] Little Example : Main of our competitors prefer to twist the rod (!) of a microswitch rather than use an electronic glow heather ... We need to show ON THE FIELD that it is Useful, Reliable, Easy to use ... for a while, before seeing the first interest in such an "extra-Terrestrian" device. I created a safety Glow Heather 5 Years ago ... Every one having used it say it's really a "plus" ... but I'm sure no more than 50 have been built !!! ( Free files on the Web + I can realise for component's cost ...). IF it was "Graupner" or "Futaba" Stamped ... may be it could be sold ... by hundreds !!! My personnal thoughts ... Alain
Posted on: 8/4/2007 11:04 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=6195639

RE: Eletronic engine syncronizer **SUPPORT **
[quote]ORIGINAL: branded Fine...I will clone it and make it available to whomever whats it... I paid more for this than I paid for my last DVD player.....No need to keep things secret at that price IMO! No need to keep the fact that it's a Cypress processor secret either. It's obvious to anyone savvy enough to look at a few traces on the PC board. BTW, I see your soldering and quality issues aren't resolved yet as evidenced by Sarah's post...... [/quote] Hi, A Clone ??? ... I just see a Clown here ... [:D][:D][:D] Alain
Posted on: 7/26/2007 7:42 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=6158185

RE: Eletronic engine syncronizer **SUPPORT **
Hi, Bill I fully do agree with the tests done ... "Short antennas" have been forbidden for planes on our field ... we had too much planes out of control with these antennas. - Processor units ( Fail-safe, glow heathers, etc ... ) used or not, the results were the same !!! seems short antennas are only usable for slope soaring ... or heli. Alain
Posted on: 5/14/2007 10:25 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=5852411

RE: Eletronic engine syncronizer **SUPPORT **
Hi, Branded We had this ... very interesting ... discussion some pages before. http://www.rcuniverse.com/forum/m_4700596/mpage_9/key_/tm.htm# from post # 217 I see it had given something interesting ... Thanks to you one more time Bill ...[;)] Alain
Posted on: 4/4/2007 10:24 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=5663672

RE: Eletronic engine syncronizer **SUPPORT **
Hi, Bill << If you could reproduce it and send me a video >> Just try to run a couple of ROYAL 45 Engines instead of your OS Engines ... you'll have it !!! I give you my one and only, free, if you want [;)] For the rest of the post ... I do agree with you !!! : We can have a Twinsync aboard every twin ...[;)] Regards Alain
Posted on: 2/13/2007 5:38 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=5411879

RE: Eletronic engine syncronizer **SUPPORT **
Hi, Jim Last month we just have launched a giant 337 ( 2x 150 cc ... ) ; an older and smaller ( 2 x 50 cc ) one flies here for 2 years now. So, I do think we have little experience about this plane ... and it's engines. Now I respect your Thoughts and won't argue anymore, you surely have a wider experience [;)] Cheers Alain
Posted on: 2/11/2007 12:54 PM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=5402923

RE: Eletronic engine syncronizer **SUPPORT **
Jim It's quite simple : I try to explain Tomlee the Twinsync, except for the sound, is not TO THE DAY the best answer to a pushpull plane ... do not know where you see "rattle and ramble" ... Now, I do not have ANY Problem with my twinsync[b]S[/b]( version recognition ... if you want ! ) nor my planes ... nor had a bad wake up !!! Capito ??? Now, I say loud and clear the Twinsync is a FANTASTIC device ... and already told Bill. Alain
Posted on: 2/11/2007 10:13 AM by Author "Acetronics" in the forum "Twin & Multi Engine RC Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=5402203