RE: Another Skymaster Viper
Few seconds of my last flight. I love this plane!! [youtube]http://www.youtube.com/watch?v=z-fczWDuYrE&feature=youtube_gdata_player[/youtube] Now I'm thinking about the tomawack Viper..... 3,5 mt......[:)] Ciao
Posted on: 11/24/2011 11:09 PM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10827911

RE: Another Skymaster Viper
Sorry but I don't understand quite well your problems due to my poor english... >What the heck is it? No allen fits its not a nut Yes, is an allen, but metric! And I see that perhaps there is some glue on it! Be very carefull with the carbon bypass! I took it away after a flame out of the turbine during a very fast passage over the runway with the turbine at minimum. I didn't crash the airplane because it flies so well!! Too difficult for me to explain in english what happened but I've done 4 flights doing the same passage and all was ok. Hope it can help! Ciao Alessandro
Posted on: 11/24/2011 9:42 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10827172

RE: Another Skymaster Viper
[quote]ORIGINAL: ViperJet1 Yes, Thats exactly what I did on my first viper!! But I was thinking of refitting the rails. Much harder, but a cleaner setup. They seemed to interfeer with the bypass a bit. The wedges that is. I somewhat like working out problems but this one seems to need an adjustment at the maker.  ARF must mean re-engineering before flight. So it should be RBF. :) [/quote] Ah ah ah you are right! [:D] However at the end I didn't use the wedges but I've corrected the rails and then I found that the turbine was a little bit down but exactly in axis. So I inserted two pieces of flat wood, glued with some epoxy. All became very strong with a very little more weight
Posted on: 11/4/2011 7:52 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10796430

RE: Another Skymaster Viper
[quote]ORIGINAL: ViperJet1 Glad to see this thread Ali created is still hangin on!!! I believe the CG is at the wingspar center. Sliding it front to back is your pref.    But obviously a bit different with every model Viper due to resin and paint. also you may want to put a flap stop in to prevent the flap from tilting upwards in transit. A small piece of hardwood at the root prevents it from flap from gouing backwards and breaking.  As for the gap seals sticking, that sucks.  That happened in my first flight. It wasn't enough however to send the plane out of control for me. I just adjusted with aleron. Try a light heat gun on them and push down then heat and push down. Carefully though, you can melt the plastic very easily if your not careful.  My new viper seems to be much better with these gap seals. Many of you know me as ''The guy who stalled his viper in a loop''  and sent it into the woods failing to even apply throttle on the downside.  Yea , I know. I'm better than that. I just flew carelessly that day. Never the less it did not discourage me from getting another and th build is going very smoothly this time since it is my second. Planning on doing all the goodies I had done before.  I see they made some changes in the kit .....probably to save cost and weight.  As usual, a few things were of concern.  but I am proficient now at building and able to understand a bit more than before what needs to be done. There is however one thing that I never asked anyone on my other jet and just figured out a fix on my own.  The engine if you noticed mounts on a slant downwards so that the exhaust cone points downward  slant and was of course the cause of me needing to replace the tailpipe twice due to a hotspot build up.  After the second of course is when I noticed the problem.   The best solution I came up with at the time was a doorstop looking shim under each side of the engine mount one on each side.  Thinking a bit more on this one I thought maybe if I notch out the front former a bit below were they have it notched to slide trhe engine in that would do the trick. Why is this like this and what did some of you do to fix this. The first Viper I had was powered by Evo, this one will have a merlin 160.  Both seem to have the same problem with the engine mount. [/quote] Hi! You are right! I also had this problem, look here. http://www.rcuniverse.com/forum/fb.asp?m=9410572 Ciao Alessandro
Posted on: 11/4/2011 2:32 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10796150

RE: Another Skymaster Viper
I've done some calculation, I have 100mt for 328 ft and good brakes [:)] But I've always landed on runway and I'm not so experienced on turbines like Ali...[8D]
Posted on: 3/23/2011 8:42 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10417623

RE: Another Skymaster Viper
[quote]ORIGINAL: Selleri Flight #25 on mine last summer. [/quote] Are you kidding? [:D] This is Ali that can land a wooden nightstand on his left hand while piloting with the other! [:D] I need all my 400ft !! Alessandro
Posted on: 3/23/2011 8:30 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10417609

RE: Another Skymaster Viper
Very very nice Hans! In HD the video is almost perfect. Perhaps the operator should improve a little bit himself [:D] Ciao Alessandro
Posted on: 8/9/2010 9:37 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9920784

RE: Another Skymaster Viper
[quote]ORIGINAL: nicocarlucci <span class=''short_text'' id=''result_box''><span title='''' style=''''>I apologize to all ... (you too Alessandro detto OTTOKRANZ<img src=''http://www.rcuniverse.com/forum/js/fckeditor/editor/images/smiley/msn/punching.gif'' alt='''' />) for my primitive English<img src=''http://www.rcuniverse.com/forum/js/fckeditor/editor/images/smiley/msn/teeth_smile.gif'' alt='''' /> [/quote] I forgive you this time but improve yourself and don't copy from the translator online! [:D]
Posted on: 8/3/2010 9:54 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9907789

RE: Another Skymaster Viper
[quote]ORIGINAL: RamsesCH Hi Alessandro ''..I had to put two blocks of balsa inside the fin and two hard wood rod in the rudder...'' Sorry,.. but how did you do that ? Did you open/divide the fin and/or the rudder Kind regards Rainer [/quote] No, I've done square holes on the fin and round on the rudder. I installed balsa blocks in the fin until they reached the balsa "wall" inside the fin. I've done a scheme of it (it's better and faster [;)]) but let me know if you need more informations.[:)] Ciao Alessandro
Posted on: 8/3/2010 6:45 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9907496

RE: Another Skymaster Viper
Jascat, I remember also about a friend of yours that lost the Viper at the maiden flight, isn't it? Did you discover the problem? Ciao A
Posted on: 8/3/2010 4:40 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9907405

RE: Another Skymaster Viper
[quote]ORIGINAL: Duncan I understand what you mean, no need for pics :) the brass tube i hysol'd onto the hinges, did the same thing as the balse you used. [/quote] mmm... now I understand how and why you used the brass tube... A
Posted on: 8/3/2010 4:35 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9907403

RE: Another Skymaster Viper
I forgot to say that I also put a long piece of balsa, 5 mm thick, glued on the fin behind the rudder because the rudder didn't go to touch the fin and the hinges remained out of the fin for almost 5 mm. I think that nobody will understand what I said [:D] and I don't have pictures.... Alessandro
Posted on: 8/3/2010 4:17 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9907389

RE: Another Skymaster Viper
I think SM should pay you for all this e-learning lessons [:D] You are right again Duncan (it's becoming boring ah ah ah) I had to put two blocks of balsa inside the fin and two hard wood rod in the rudder. I think that now my two hinges are more solid than the three SM because, as you see from the pictures of Nicolò, the SM balsa blocks inside the fin are not so secure....[&:] Ciao A
Posted on: 8/3/2010 3:58 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9907374

RE: Another Skymaster Viper
[quote]ORIGINAL: RamsesCH .........And everybody recommended me to check and reinforce in the minimum the rudder for hinges mounting, even to build the servo into the rudder instead of recommended installation in the fuselage............ [/quote] You are right. Reinforce the rudder, throw away the 3 SM hinges, take the robart model (!!!) and use 5 instead of 3. I agree with Duncan about servo installation also because the fin and stabs structure became much more solid. You can find a lot of pictures about this in this thread. Ciao Alessandro
Posted on: 8/3/2010 2:53 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9907319

RE: Another Skymaster Viper
[quote]ORIGINAL: Duncan It's a shame i can't improve my Italian at the same time as you guys improve you english lol. Us Brits are notoriously bad at learning languages. Thinking about it, there are a few Brits on here that struggle with English !!! [:D] [/quote] Thanks Duncan, perhaps is because you don't need to learn other language, english is the most important language in the world.... well.... recently perhaps after chinese... [:D]
Posted on: 8/3/2010 2:28 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9907299

RE: Another Skymaster Viper
[quote]ORIGINAL: nicocarlucci Ciao Ale stà cominciando ad essere tosta farsi capire da loro,il nostro è cispadanenglish Saluti Nico<img src=''http://www.rcuniverse.com/forum/js/fckeditor/editor/images/smiley/msn/teeth_smile.gif'' alt='''' /> [/quote] Ciao Nico, che fatica [&:] ... Però ne vale la pena, sto anche migliorando il mio inglese! A breve voglio postare le modifiche fatte per mettere il fumogeno. Sorry, only a few words in italian for relaxing [:D] Ciao Ale
Posted on: 8/2/2010 11:55 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9905425

RE: Another Skymaster Viper
[quote]ORIGINAL: Duncan yep, i did exactly that. There should be some pics of mine on here. i'll have a look and see if there are still on my pc Duncan Pics now attacted :) [/quote] Duncan, you are great. Thanks, is exactly like in mine (perhaps I copied you! [:D]) And you tight the back carbon rod through a hole you have done in the fuz, right? Have you modified the internal aluminum ring? A
Posted on: 8/2/2010 11:47 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9905411

RE: Another Skymaster Viper
[quote]ORIGINAL: Duncan Alessandro, What do you mean by extractable? Mine is probably the only large Viper Ali flies at the minute ,as he has been playing with the 2m version. I remove the fin after every session for transport and as yet haven't found any play in the carbon rod. Duncan [/quote] Extractable... like removable... like yours [:D] (it's my english...) Did you made, like me, the mod explained in these thread? With the bolt in the front aluminum rod and then tightening the back carbon rod through a hole in the fuz? A
Posted on: 8/2/2010 11:28 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9905371

RE: Another Skymaster Viper
[quote]ORIGINAL: nicocarlucci <span class=''long_text'' id=''result_box''><span title='''' style=''''> hi Alessandro while you're enjoying the holidays sardinia, I'm in the office thinking, instead of spending 4000 euro for the viper was better than I even went on vacation ....<img src=''http://www.rcuniverse.com/forum/js/fckeditor/editor/images/smiley/msn/drowning.gif'' alt='''' /> <span title='''' style=''''>Jhon Skymaster very kindly asked me to send him of the rudder but I want to show everyone what's inside because no one will ever see .... In your opinion is worth spending all this money for such a model? I do not think a good building.<img src=''http://www.rcuniverse.com/forum/js/fckeditor/editor/images/smiley/msn/devious.gif'' alt='''' /> [/quote] Do not be so pessimistic, I wait you here in Sardinia where there is a really beautiful runway (perhaps too much wind...[sm=bananahead.gif]). The Viper worth every euro spent, I think you're just unlucky to take the wrong one.... I don't know what to do with my fin, now I'm flying very gentle because I still frightened by the giant [:D] the but in future? Ali, sorry to bother you again but you are our reference pilot and you surely do a good stress test on the airplanes, your fin is generally extractable? Ciao Alessandro
Posted on: 8/2/2010 11:03 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9905329

RE: Another Skymaster Viper
As you understand the plane I'm speaking of is exactly this one of Nicolò.... Nicolò, tremendous pictures to see...[X(] Ciao Alessandro
Posted on: 7/30/2010 11:38 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9899058

RE: Another Skymaster Viper
[quote]ORIGINAL: Ali I have never flown a viper or a hawk on the new tube. Only ever the old tube with the material in the middle. If anyone is bending one of these tubes, they must be putting more pressure on the wings than me ( Which when you think about the full power knife edge, pushed circuit I do, surprises me ) Then maybe they are lucky the tube bet... Before something in the wing bent. I never once had a issue with the carbon rudder tube. Even when I lost most of my fin due to rudder flutter on the original demo model. Regards Al [/quote] Thanks Ali now I feel much more confortable [:)] About the rudder, my friend didn't have a problem with a bent of the carbon tube but exactly with a flutter while flying stable with a jetcat 160. We think is a flutter caused by the carbon tube that is inserted only 3,5 cm inside the rudder and almost without glue. He didn't put the servo inside the rudder but on the fuz, so the "walls" of the rudder aren't so compact like in mine (and most of us) that have the servo inside. A strange thing is that I tried to pull the tube with some pressure and it come away from rudder due to lack of glue, very strange isn't it? I don't know what to do but I'm thinking to replace the tube....[&:] What is your opinion and what happened to you? Thanks! Alessandro P.S.: always sorry for my english[:o]
Posted on: 7/30/2010 11:29 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9899039

RE: Another Skymaster Viper
I forgot to say I have 6 flights with one "not so soft" landing... [:D] I had almost a stall at 30 cm from the ground because I was landing too far from me and I didn't realize I was too slow in a very long runway and I broke the pin of front gear and the wooden base of the right wing gear but the tube it's still perfect! I used the carbon fiber reinforcement from digiteh on the wings (that didn't broke) so I think for this reason I didn't have any more damage... However I would have preferred the first tube![:o] Alessandro
Posted on: 7/30/2010 10:40 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9898875

RE: Another Skymaster Viper
[quote]ORIGINAL: RamsesCH Hi Duncan Thanks. I know the replaced new one, as discussed, has 1.1. mm, but even with reinforcements afaik. My one is a ''simple'' tube. Therefore i ask for that. [/quote] Yes, unfortunately the new one with 1,1 mm is a "simple" tube. Lucky who got the first one with internal reinforcements... However I think also the new one is strong enough if you fly normally and I never heard about problem with it. Instead a friend of mine had a problem with the vertical fin and lost the viper [:@]. If you did a removable fin modification check it very well before flight expecially the carbon tube beacuse it enters in the fin only 3/4 cm ! and expecially if you don't place the servo inside the fin (in this case the fin become stronger). I'm thinking about what to do... perhaps I'm going to take away the carbon tube and place a longer one.[&:] Ali, if you are reading us, please let us know what you think about it. Thanks Alessandro
Posted on: 7/30/2010 9:09 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9898747

RE: Another Skymaster Viper
[quote]ORIGINAL: erbroens Resistance is futile.... yet another Skymaster Viperjet! now to glue all the bits,, muahahahahaaaa!!! [/quote] Welcome and good luck!!! I will never forget that moment! [:D] A
Posted on: 7/22/2010 4:36 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9880450

RE: Another Skymaster Viper
[quote]ORIGINAL: zl1wn Hi all, I am still having a problem with my EVSD 5U PRO, one problem, the unit looses whatever settings I have input to it, when the power is turned off to the unit, secondly I am trying mode 1, there is no delay on the doors opening and the gear coming down, and the same when the gear comes up, the doors try to close as the gear is retracting. Could the unit be faulty? Comments please.. Regards Ross [/quote] Mmmmmm, if the unit looses the settings when you power off I think yes at least for this reason! Did you try to reset it? The procedure is in the end of the manual. Alessandro
Posted on: 7/18/2010 11:26 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9871980

RE: Another Skymaster Viper
[quote]ORIGINAL: STKNRUD Beautiful ship. What is the length of the runway you are flying from not counting the over run? George [/quote] George, 100 meters Ciao Alessandro
Posted on: 7/16/2010 11:44 AM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9868864

RE: Another Skymaster Viper
[quote]ORIGINAL: ViperJet1 And heres my maiden!!!! Flaps got stuck causing a slight teeder to one side but I corrected. First attempt to land I got it too!! Sorry about the camera man .....he sux!!!! <a href=''http://www.youtube.com/watch?v=YsCGdOeejcE''>http://www.youtube.com/watch?v=YsCGdOeejcE [/quote] Very nice!!! I understand very well the old man that scream "THANK GOD" to the sky and... and yes... your camera men is almost worse than my wife!!! [:D] Here another video, nothing special except perhaps for a low passage with lights on viewed by camera leaning on the runway (nothing like the Ali's ones of course). Obviously my friend didn't take the other nice landings but only the bad one...[:@] http://www.youtube.com/watch?v=Chv3tWRn3sg ... after starting the turbine we turn the Viper toward the runway and the heat of rear exaust shaves my right leg... [sm=what_smile.gif][:D] Ciao Alessandro
Posted on: 7/12/2010 12:48 PM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9859798

RE: Another Skymaster Viper
Thanks you all for the suggestions about the smoking system.[:)] I will post some pictures when it will be ready. A
Posted on: 6/7/2010 1:32 PM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9787412

RE: Another Skymaster Viper
Wow! Congratulations Fritz! Really nice video! A
Posted on: 6/7/2010 1:30 PM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9787407

RE: Another Skymaster Viper
Thanks Craig, so you have six tanks on your plane! Very smart the way you fixed the two tubes around the turbine, I think I will do the same. Two more questions: the tube is steel or aluminum? I was thinking about brass. Are you using kerosene, diesel fuel, a mixture or what? A
Posted on: 6/4/2010 1:16 PM by Author "OttoKranz" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9780564