Matt Halton Posted July 10, 2008 Share Posted July 10, 2008 Right, I see now!The tanks are carved from pink foam by hand,I used 3 view drawings for reference.Not sure if they will be droppable,I was planning on just leaving them there,held on with litho plate with magnets underneath them,and magnets on the tanks as I did with my P-51.I'll have to look again and see what I can do. Quote Link to comment Share on other sites More sharing options...
winchweight Posted July 10, 2008 Author Share Posted July 10, 2008 Good stuff, got a copy of the drawings / templates? Where do you buy carveable pink foam (and blue for that matter)? Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted July 11, 2008 Share Posted July 11, 2008 yes...I would like some small quantities of blue /pink foam as I think it would be ideal for carving /sanding up couple of samll lightweight pilot busts which I need for a coiple of projects - trouble is.....everywhere I find thats stocks it sells it in very large quantities Quote Link to comment Share on other sites More sharing options...
winchweight Posted July 11, 2008 Author Share Posted July 11, 2008 Also Matt, how many amps does the new prop pull? Quote Link to comment Share on other sites More sharing options...
Matt Halton Posted July 11, 2008 Share Posted July 11, 2008 I got my foam from a building site skip,especially the demolition sites, just ask!I'm off to work soon, so thought I'd make the tank fixings.You need a small amount of litho plate,or 1/64" ply would do. 4 X neodym mags, cheap off ebay for loads..4 pieces of carbon sticks,about 1 3/4" long,mine are approx 3/32" dia. but is not critical.As the litho plates sit under the plastic cover,I recessed them, just cut around them into the foam slightly and compress with a flat blade screwdriver or similar.The pics expain the rest...just need to hook up the retracts,make a decent tailwheel bracket,make gear doors,fit the plastic cover and this bird is good to go With regard to amps, not got my whattmeter on it yet, but I'll post the numbers when I get them.The whole prop/spinner assy needs balancing before I try that. Quote Link to comment Share on other sites More sharing options...
winchweight Posted July 11, 2008 Author Share Posted July 11, 2008 Cooool! Quote Link to comment Share on other sites More sharing options...
PAUL BRIDGES Posted July 13, 2008 Share Posted July 13, 2008 Hello took the sea fury up for the frist time to day. it was a mad flight when i put full power on she jumped around the sky and drop a wing. I put 50% power on and she flys ok. Help plz . It looks like she can not take the power of the Park 480 motor a full power. Took the landing gear off her now . Quote Link to comment Share on other sites More sharing options...
winchweight Posted July 13, 2008 Author Share Posted July 13, 2008 Don't know why it'd do that unless you were getting glitches. Was it 2.4Ghz, or 35Mhz? Mine flies (flew) well, but needed a bit of expo to settle down the mid range responses.I say flew.... I'll explain in a mo' after a brew. Quote Link to comment Share on other sites More sharing options...
winchweight Posted July 13, 2008 Author Share Posted July 13, 2008 Right then. I got there early. A beautiful day, about 1kt across the runway, but not bad at all. Don't be deceived by the photos, the day was a scorcher. I set up and flew before anyone else arrived. Lovely.Great start to the day. I flew again later on (Spektrum DX7, fresh lipo etc) and all was well. That is until I called turning finals to land, and the model continued to fly straight on. Utterly unresponsive in a gentle descent until it hit the deck. The pic shows the damage after the battery departed through the firewall and over the motor. The cowl is wrecked, the front half of the fuselage is split lengthways as well. Repairable if I can get a new cowl, but she'll never be pretty again. I don't know what happened, but another a/c also on 2.4 crashed on the same corner, about 30secs after and 50yds behind me. I'm a bit frustrated at the moment, but the epoxy will be out soon enough. Quote Link to comment Share on other sites More sharing options...
Matt Halton Posted July 13, 2008 Share Posted July 13, 2008 Oh, sounds ominous Shaun...I'm hoping that whatever happened isn't too bad.Paul, what you describe to me,does indeed sound like glitches as Shaun said.The model is well able to take high power motors,so can't be that.Anything come loose? Maybe too at less than full power it settles down.How are your hinges,any come loose,did you hear a buzzing sound at full power, possible control surface flutter?I'd check the entire integrity of all moving surfaces if I were you.I pulled out my elevator hinges and reglued them,some were only just 'in there' . Quote Link to comment Share on other sites More sharing options...
Matt Halton Posted July 13, 2008 Share Posted July 13, 2008 Cross post!Sorry to hear that mate,I'm still on good old 35,I heard too many unpalatable stories with 2.4The model as you say,is repairable,foam goes back together great,you need to get your radio gear checked out,that kind of thing isn't supposed to happen.. Quote Link to comment Share on other sites More sharing options...
Matt Halton Posted July 13, 2008 Share Posted July 13, 2008 double post.... Quote Link to comment Share on other sites More sharing options...
winchweight Posted July 13, 2008 Author Share Posted July 13, 2008 Yeah I know.... I'll have a look later to see if it locked me out for the old 3 secs thingy. I think it's quick connect enabled though. It just knocked my confidence as I bought 3 rx, the DX7 and the Sea Fury all in the same week. Quote Link to comment Share on other sites More sharing options...
Matt Halton Posted July 13, 2008 Share Posted July 13, 2008 I found this for you Shaun,in case you are not aware....''From what I understand, you should always use a UBEC if using Spektrum because a voltage dip to the Rx can cause the unit to re-boot. In a plane like the Sea Fury with a boat load of servos installed, using a UBEC is especially important. The new firmware sisyphus refers to speeds up the re-boot time significantly, but it doesn't eliminate it. That's my understanding anyway.''You probably know this,I'm not trying to teach you to suck eggs, hope you find it useful.Do you have a software patch too?<!-- / message --> Quote Link to comment Share on other sites More sharing options...
winchweight Posted July 13, 2008 Author Share Posted July 13, 2008 Hi Matt thanks for that. Doesn't it apply to people using a seperate rx battery pack of 4.8v or similar? I was using a lipo, so could the voltage really dip that much from 11.1v?When you say software patch, do you mean the quick connect patch for the rx?Out of interest, the battery was cool but the motor was very warm. Quote Link to comment Share on other sites More sharing options...
Matt Halton Posted July 13, 2008 Share Posted July 13, 2008 "Patch" is version 1.6 for the AR 6100.Rx bat should elimate it."...so I've been told,also:-"Patch" is version 1.6 for the AR 6100.Rx bat should elimate it."And....<!-- / message -->""Even a "Brand New" system may have been sitting on a shelf somewhere for a couple of months before you got it. You must test & verify the quick connect and LED Flash or you risk having an old software version and not know it till it's too late. I bought a new AR6200 RX recently all sealed in it's factory package, "Brand New". When I tested it, I found out it DID NOT have quick connect & LED Flash. I had to send my brand new RX back for software upgrade. Why risk your new plane to a servo overload on the retracts or pushrod drag? My Sea Fury has a seperate BEC - just to be on the safe side." (not my words!!)So, I hope you find that helpful, of course,you had a UBEC fitted too?CheersMatt<!-- / message --> Quote Link to comment Share on other sites More sharing options...
Matt Halton Posted July 13, 2008 Share Posted July 13, 2008 Shaun,here is a more definitive explanation.Seems I'm learning about 2.4 as well now!"There is an upgrade for the earlier Spektrum rcvrs that makes the reboot process much faster. Early ones could take over a second to reboot, which is plenty of time for a crash.What happens is that a large power draw, such as a sudden application of power, will drop the battery voltage below the 3V limit for the rcvr. The rcvr shuts off (leaving you with no control). Once the motor power drops, the voltage picks back up. The rcvr turns on, looks for the transmitter signal, exchanges codes, and starts working again. The newer units take a fraction of a second for all this to work, saving some planes from a crash (not all!).The limit is the voltage supplied to the rcvr, either through the ESC/BEC, a stand alone BEC, or, a dedicated battery.FYI, the battery supplied with Spektrum systems is typically inadequate for the job, especially if using the digital servos that come with the DX7 setup.Sometimes using a 3s battery will prevent the problem. Other times it can cause it. Some smaller and/or cheaper ESC's come with a BEC that is not very good, ie, when using a 3s battery the output of the BEC is limited to a lower current than if it were hooked up to a 2s source.Look for what is called a 'switching' BEC. They will deliver max current all the time. Or, go to a separate BEC with a higher capacity." Quote Link to comment Share on other sites More sharing options...
winchweight Posted July 13, 2008 Author Share Posted July 13, 2008 Thanks matt that's good info. I knew that 4.8v etc were prone to this, but I thought that since I was using a 11.1v 3S lipo, I'd be ok. So perhaps turning finals and dropping the gear was enough after a 5 min flight, to allow the volts to drop and the rx to trip off. I haven't yet checked the rx reboot time, so I will do that in the morning. In fact I'll check all 4 of my rx.The fuselage is now rebuild, with cocktail sticks across the fuselage break to give a little more strength. I need a new cowl though, as this will disguise most of the nasty impact damage and compression damage in the cowl area. Quote Link to comment Share on other sites More sharing options...
winchweight Posted July 13, 2008 Author Share Posted July 13, 2008 [IMG]http://i94.photobucket.com/albums/l92/winchweight/th_FlyIn2008024.jpg[/IMG][/URL Quote Link to comment Share on other sites More sharing options...
winchweight Posted July 13, 2008 Author Share Posted July 13, 2008 [IMG]http://i94.photobucket.com/albums/l92/winchweight/th_FlyIn2008025.jpg[/IMG][/URL Quote Link to comment Share on other sites More sharing options...
winchweight Posted July 13, 2008 Author Share Posted July 13, 2008 [IMG]http://i94.photobucket.com/albums/l92/winchweight/th_FlyIn2008021.jpg[/IMG][/URL Quote Link to comment Share on other sites More sharing options...
winchweight Posted July 13, 2008 Author Share Posted July 13, 2008 So Humbrol Extra Dark Sea Gray matches the top, but any suggestions for the lower creamy colour? Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted July 13, 2008 Share Posted July 13, 2008 Shaun...as you have had your Spekky for a while now, I am surprised that you have not been reading up on the various threads regarding its operation, modifications and so on. I did a fairly detailed piece some time ago about the use of Becs and so on, as well as a piece about the whole quick connect thing. I also have mentioned in several threads to people about ensuring that they INSIST to their suppliers that any receiver purchased is QC - all stock sent by HH to the UK since around March of this year was QC...so theres no excuse really.All this of course assumes that it was a brown out which caused your failure....and this has in no way yet been proven. Strange also that another 2.4G failure occured at the same site on the same day....doubly strange that I have flown exclusively 2.4ghx Spekky for almost 2 years with never a single issue whatsoever.....likewise all 2.4G users in our club. Could it be that the model was in the "dead doughnut" area of aerial transmission? How do you angle your aerial? Please let us know if your receiver was QC or not. Also, I suggest you do a simple current consumption measurement of you radio system on the bench, and hand stall a couple of servos. Using a 3s Lipo and BEC should not cause a brown out per se..... all depends of course on the ability / quality of the BEC unit. PS sorry to hear about the crash Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted July 14, 2008 Share Posted July 14, 2008 Sorry to hear about that Shaun, I'm sure you could mix a lower colour or see what the local model shop has to offer. Mine's had about 10 flights over the last week and I took her out to the park this morning where the grass is short so I could do the full mony - take off ground, raise wheels and then land on wheels - great! I use the Park 450 which equates to a 200-watt system and she's got more than enough grunt on that so the 480 must be a bit scary Paul! Quote Link to comment Share on other sites More sharing options...
Mike Phillips Posted July 14, 2008 Share Posted July 14, 2008 Re Timbos comment Could it be that the model was in the "dead doughnut" area of aerial transmission? How do you angle your aerial? how should it be positioned please? I have converted to 2.4 and have never had a problem Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.