Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Page 5 of 69 FirstFirst ... 345671555 ... LastLast
Results 101 to 125 of 1705

  1. #101
    InboundLZ's Avatar
    Join Date
    Oct 2004
    Location
    Las Vegas, NV
    Posts
    1,938
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    I will also be giving the wings this treatment as I HATE to hook up wires and hoses when installing my wings....

    With this set-up I just slide the wings home and put in the lock bolt. 5 seconds to install a panel at the field. Easy Peasy! Some might ask about air leaks...this system is rock solid!
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Jg14171.jpg 
Views:	24 
Size:	46.6 KB 
ID:	1259834   Click image for larger version. 

Name:	Fb87736.jpg 
Views:	30 
Size:	45.6 KB 
ID:	1259835   Click image for larger version. 

Name:	Sx62455.jpg 
Views:	24 
Size:	44.6 KB 
ID:	1259836  
    Dave Bottita
    evoJet Factory Pilot
    Smart-Fly

  2. #102
    CraigG's Avatar
    Join Date
    Jan 2002
    Location
    Sautee Nacoochee, GA
    Posts
    1,542
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper


    ORIGINAL: Ali
    Craig has a point with the hinges, but to be honest I think even Robarts will flex. The problem is the un supported area of hinge between the trailing edge of the fin and the radius of the leading edge of the rudder. We put balsa blocks or even build a seat of hysol to support the hinge and eliminate the movement. But to be honest we have never had a hinge fail even on the un supported ones.
    Hope this helps, and enjoy your great new toy! and for me what must be one of, if not the best all rounder available on the market today!
    Regards Al
    Exactly right Ali. Here are a couple of pics showing balsa blocks I used to better support the hinge on the fin. The one near the top is nearly 3/8" tall.

    Also agree on the flying qualities. Very smooth and honest. Great presence in the air.

    Craig
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Jh16365.jpg 
Views:	26 
Size:	54.7 KB 
ID:	1259837   Click image for larger version. 

Name:	Vq52637.jpg 
Views:	19 
Size:	42.9 KB 
ID:	1259838  
    Attached Images Attached Images  

  3. #103
    Ali's Avatar
    Join Date
    Apr 2002
    Location
    Northamptonshire , UNITED KINGDOM
    Posts
    4,923
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    Great photos Craig. They show exactly what I was trying to explain. Really glad to hear you are liking the way it flies.. had a feeling you would
    With you all the way Inbound. I hate hooking up 5 connections each time. Nothing beats sliding a pair of wings on, one bolt per side and away you go!
    Al's Hobbies, Horizon Hobby, Airworld, BVM, Jet Cat, Skymaster, Rc Jet Centre,pull over, Tomahawk, C-ARF, Jet-Teng,Kingtech

  4. #104

    Join Date
    Aug 2008
    Location
    Ebberup, DENMARK
    Posts
    5
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    Hi All
    I am also building a viperjet and here is a link ( http://www.rc-unionen.dk/nytforum/to...44&whichpage=2 ) to some of my building pictures.

    John Madsen

  5. #105

    Join Date
    May 2004
    Location
    Weert, NETHERLANDS
    Posts
    359
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    How did I miss all these great new posts??

    Watching and learning for my own viper build!

  6. #106

    Join Date
    Dec 2002
    Location
    Avondale , PA
    Posts
    47
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    I have been working hard, just not enough on my VJ. However, maybe I should slow down a bit and let you guys all lead the way! I too was a bit worried about the rudder hinges, but installed as per the "manual" I decided to install the servos in the fuse side of things for the rudder and elevators. I did add material for glueing of the horns in the rudder and elevators. The flaps and ailerons seemed okay with a good hard balsa at each location. The little bit of horn that was exposed inside the leading edge was glued over with V-poxy.
    I had a small problem with the flap and aileron servo instal. The "L" brackets suplied were tapped for larger screws than supplied and were to small for installing the Futaba servos. I made up a new set to make for a better fit and better screw location on the woood hardpiont.
    As for air, I have ordered two large Robart tanks for the gear/doors. I'll use one large (supplied) tank for the brakes. I'm using the multi function valve that came with the "go fly" deal from BVM. Looks simple enough... but havent turned it on yet or attempted any set up. Any words of advice on the unit yet? I'll run a seprate servo/valve for the nose gear door as I would like the main doors to cycle shut after gear extention. Again, any thoughts on that one?
    My P-160 is here as of today. Any advice on wheather or not to run the turbine by-pass? I have been told it runs better without it. The one that came with the kit is rather cheap and flimsy. Again, advice is accepted!
    Being my first jet, I'm open to any/all ideas. I have found however that a lot of guys go overboard with what I should do. (ie... spend a ton more money than I planned on spending for all top level stuff) and I just want a good, safe, easy jet to ease me into the concept of burning Jet-A over gas and encourage me to stay involved. As a basic plan, i think the Viper looks good so far.
    I'll get some pix of mine posted here soon to help suppot this awsome thread.
    Off to the hangar (shop) in the morning to do more work on it and get started on the air system! No pressure there! (get it?)

    Fly safe!

    Matt

  7. #107
    quist's Avatar
    Join Date
    Jan 2002
    Location
    Glendale, AZ
    Posts
    3,062
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    Matt,

    I saw your flights at the Shootout last year. Will you be preforming again? It was great to see you do a sychronized routine with an RC plane. Oh and welcome to the RC Jet World.

  8. #108
    DENTO's Avatar
    Join Date
    Dec 2008
    Location
    herveybay, AUSTRALIA
    Posts
    280
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    dashboard mod that I have made try stock epoxied just below screen and lite ply dash cut to fit I made a templet out of A4 laid on top outside of screen then traced around photoes may explain
    P47 BROTHERHOOD #95

  9. #109
    DENTO's Avatar
    Join Date
    Dec 2008
    Location
    herveybay, AUSTRALIA
    Posts
    280
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    TRY AGAIN
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Ge94641.jpg 
Views:	26 
Size:	47.9 KB 
ID:	1261700   Click image for larger version. 

Name:	Gb89736.jpg 
Views:	34 
Size:	64.6 KB 
ID:	1261701   Click image for larger version. 

Name:	Lq37549.jpg 
Views:	23 
Size:	66.5 KB 
ID:	1261702  
    P47 BROTHERHOOD #95

  10. #110
    DENTO's Avatar
    Join Date
    Dec 2008
    Location
    herveybay, AUSTRALIA
    Posts
    280
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    PS TO ALL THAT
    You have to trim the templet back bit by bit to fit may take a while but worth it
    REGARDS JOHN
    P47 BROTHERHOOD #95

  11. #111

    Join Date
    Nov 2002
    Location
    Suwanee, GA
    Posts
    707
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper


    ORIGINAL: Matt Chapman

    I have been working hard, just not enough on my VJ. However, maybe I should slow down a bit and let you guys all lead the way! I too was a bit worried about the rudder hinges, but installed as per the ''manual'' I decided to install the servos in the fuse side of things for the rudder and elevators. I did add material for glueing of the horns in the rudder and elevators. The flaps and ailerons seemed okay with a good hard balsa at each location. The little bit of horn that was exposed inside the leading edge was glued over with V-poxy.
    I had a small problem with the flap and aileron servo instal. The ''L'' brackets suplied were tapped for larger screws than supplied and were to small for installing the Futaba servos. I made up a new set to make for a better fit and better screw location on the woood hardpiont.
    As for air, I have ordered two large Robart tanks for the gear/doors. I'll use one large (supplied) tank for the brakes. I'm using the multi function valve that came with the ''go fly'' deal from BVM. Looks simple enough... but havent turned it on yet or attempted any set up. Any words of advice on the unit yet? I'll run a seprate servo/valve for the nose gear door as I would like the main doors to cycle shut after gear extention. Again, any thoughts on that one?
    My P-160 is here as of today. Any advice on wheather or not to run the turbine by-pass? I have been told it runs better without it. The one that came with the kit is rather cheap and flimsy. Again, advice is accepted!
    Being my first jet, I'm open to any/all ideas. I have found however that a lot of guys go overboard with what I should do. (ie... spend a ton more money than I planned on spending for all top level stuff) and I just want a good, safe, easy jet to ease me into the concept of burning Jet-A over gas and encourage me to stay involved. As a basic plan, i think the Viper looks good so far.
    I'll get some pix of mine posted here soon to help suppot this awsome thread.
    Off to the hangar (shop) in the morning to do more work on it and get started on the air system! No pressure there! (get it?)

    Fly safe!

    Matt

    Matt - this is full of good tips...http://www.rcuniverse.com/forum/m_83..._1/key_/tm.htm

    Its a SWEET JET - enjoy it! You do not need the bypass by the way.

  12. #112
    DENTO's Avatar
    Join Date
    Dec 2008
    Location
    herveybay, AUSTRALIA
    Posts
    280
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    Dashboard fitted
    Regards John
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Bz77208.jpg 
Views:	18 
Size:	67.4 KB 
ID:	1262092   Click image for larger version. 

Name:	Sn40783.jpg 
Views:	19 
Size:	69.0 KB 
ID:	1262093  
    P47 BROTHERHOOD #95

  13. #113
    F-15J_JSDF's Avatar
    Join Date
    Aug 2008
    Location
    London, UNITED KINGDOM
    Posts
    277
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper


    ORIGINAL: Ali

    I feel a military scheme Viper coming next!


    I want a Playboy Bunny Scheme ... Black and white, but not a Military Playboy Bunny like the F-4

  14. #114
    snobird's Avatar
    Join Date
    Jan 2002
    Location
    Auburn, ME
    Posts
    385
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    Help, on my very first flight with my SM Viper, about the 4th. lap around the field, at level and 1/2 power, half my fin and all my rudder blew off. was able to land ok,(no damage) servo was a 8711, metal arm and a pro-link. Control horn was SM supplyed. I know others have had the same issue. Question is getting a replacement. how long, does SM have any apare parts ? would love to fly again be snow flys.

  15. #115

    Join Date
    Nov 2002
    Location
    Suwanee, GA
    Posts
    707
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper


    ORIGINAL: snobird

    Help, on my very first flight with my SM Viper, about the 4th. lap around the field, at level and 1/2 power, half my fin and all my rudder blew off. was able to land ok,(no damage) servo was a 8711, metal arm and a pro-link. Control horn was SM supplyed. I know others have had the same issue. Question is getting a replacement. how long, does SM have any apare parts ? would love to fly again be snow flys.
    Sorry to hear about this, glad you were able to get it back! By now you have probably heard about the mods for the rudder. I added one more hinge on the rudder and added another support post inside the fuse to hold the fin in place, its totally solid now. I've ordered painted parts from SM for my Viper, it takes about 4 weeks to get them. If yours is painted by SM they will need matching dimensions on the fuse to make sure the paint lines match.

  16. #116
    CraigG's Avatar
    Join Date
    Jan 2002
    Location
    Sautee Nacoochee, GA
    Posts
    1,542
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper


    ORIGINAL: snobird

    Help, on my very first flight with my SM Viper, about the 4th. lap around the field, at level and 1/2 power, half my fin and all my rudder blew off. was able to land ok,(no damage) servo was a 8711, metal arm and a pro-link. Control horn was SM supplyed. I know others have had the same issue. Question is getting a replacement. how long, does SM have any apare parts ? would love to fly again be snow flys.
    Snobird,

    Sorry to hear about your problems. Almost certainly they were caused by flutter due to hinging or control horn issues. Did you use the supplied hinges and install them per the manual? If so, you are the latest to suffer this fate. Supposedly later production VJ's have improved hard points but I agree with jclittle that you would be wise to incorporate the mods suggested in this thread when you get your new fin and rudder.

    My latest Viper issue is a persistent leak in the brake system that I finally traced to the smaller SM supplied air tanks. I used both small tanks, T'd together and BOTH have leaks in the caps. The leaks, in both, cause pressure to drop fairly quickly to around 60psi and then almost stop. Needless to say, they are both in the trash can and replaced with real r/c hardware (Robarts). So far the big tank is holding air but I think I will replace it anyway.

    Craig

  17. #117

    Join Date
    Mar 2006
    Location
    , CA
    Posts
    84
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    Yo Ali

    I'm working on my viper and I'm adding somes detail parts to plane and NO you can't have the parts if I crash it
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Gd93629.jpg 
Views:	28 
Size:	86.4 KB 
ID:	1264448   Click image for larger version. 

Name:	Je98622.jpg 
Views:	24 
Size:	79.8 KB 
ID:	1264449   Click image for larger version. 

Name:	Ms42925.jpg 
Views:	25 
Size:	83.4 KB 
ID:	1264450  
    \"THE FIXER\"
    I am HVN B..ch!!!!

  18. #118

    Join Date
    May 2004
    Location
    Weert, NETHERLANDS
    Posts
    359
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper


    ORIGINAL: hvnmodels

    Yo Ali

    I'm working on my viper and I'm adding somes detail parts to plane and NO you can't have the parts if I crash it
    Ooh, I like!! : D

    Hans

  19. #119

    Join Date
    Nov 2002
    Location
    Suwanee, GA
    Posts
    707
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper


    ORIGINAL: Matt Chapman

    I have been working hard, just not enough on my VJ. However, maybe I should slow down a bit and let you guys all lead the way! I too was a bit worried about the rudder hinges, but installed as per the ''manual'' I decided to install the servos in the fuse side of things for the rudder and elevators. I did add material for glueing of the horns in the rudder and elevators. The flaps and ailerons seemed okay with a good hard balsa at each location. The little bit of horn that was exposed inside the leading edge was glued over with V-poxy.
    I had a small problem with the flap and aileron servo instal. The ''L'' brackets suplied were tapped for larger screws than supplied and were to small for installing the Futaba servos. I made up a new set to make for a better fit and better screw location on the woood hardpiont.
    As for air, I have ordered two large Robart tanks for the gear/doors. I'll use one large (supplied) tank for the brakes. I'm using the multi function valve that came with the ''go fly'' deal from BVM. Looks simple enough... but havent turned it on yet or attempted any set up. Any words of advice on the unit yet? I'll run a seprate servo/valve for the nose gear door as I would like the main doors to cycle shut after gear extention. Again, any thoughts on that one?
    My P-160 is here as of today. Any advice on wheather or not to run the turbine by-pass? I have been told it runs better without it. The one that came with the kit is rather cheap and flimsy. Again, advice is accepted!
    Being my first jet, I'm open to any/all ideas. I have found however that a lot of guys go overboard with what I should do. (ie... spend a ton more money than I planned on spending for all top level stuff) and I just want a good, safe, easy jet to ease me into the concept of burning Jet-A over gas and encourage me to stay involved. As a basic plan, i think the Viper looks good so far.
    I'll get some pix of mine posted here soon to help suppot this awsome thread.
    Off to the hangar (shop) in the morning to do more work on it and get started on the air system! No pressure there! (get it?)

    Fly safe!

    Matt

    Matt check out post #114 from Snobird, you may want to modify your rudder build...

  20. #120
    Joe C's Avatar
    Join Date
    Aug 2002
    Location
    San Pedro, CA
    Posts
    2,224
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper


    ORIGINAL: hvnmodels

    Yo Ali

    I'm working on my viper and I'm adding somes detail parts to plane and NO you can't have the parts if I crash it
    Ya ya ya, how come Sung and mine speed brakes are not cut like that. MMMMMMMmmmmmmmmmmmm
    BEST IN THE WEST JET RALLY
    www.bestinthewestjetrally.com Oct. 15th-19th, 2014

  21. #121

    Join Date
    Dec 2002
    Location
    Avondale , PA
    Posts
    47
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    WOW! Forget working on my rudder.... I want to start working on a set of speed brakes! VERY COOL!

    Any ideas out there at to how to re-enforce the canopy windshields? Would a bead of Vpoxy do it... or is a layer of thin glass needed?

    Regarding the rudder; hinging and what asside, any thoughts as to whether the rudder should hae some weight added to balance it some? That was mentioned for the ailerons I think for the bigger engines.

    And..... by-pass or no by-pass? I'm getting about a 50/50 split on this one.

    Should have my air system up and running by Saturday (Robart tanks, fill valves and quick disconnects.... BVM pressure gauge)

    Matt

  22. #122
    CraigG's Avatar
    Join Date
    Jan 2002
    Location
    Sautee Nacoochee, GA
    Posts
    1,542
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper


    ORIGINAL: Matt Chapman

    Any ideas out there at to how to re-enforce the canopy windshields? Would a bead of Vpoxy do it... or is a layer of thin glass needed?

    Regarding the rudder; hinging and what asside, any thoughts as to whether the rudder should hae some weight added to balance it some? That was mentioned for the ailerons I think for the bigger engines.

    And..... by-pass or no by-pass? I'm getting about a 50/50 split on this one.


    Matt
    A bead of Aeropoxy/Hyso does the trick on the windscreen. Just be sure to rough it up a little with coarse sandpaper first.

    I'm sure some balance weight on the rudder would help but I'm not sure it will prevent what happened to Snobird and others if no other modifications are made. With the modifications, rudder balance weight is not necessary. No balance weight on my ailerons either and no problems.

    No need for a bypass in my opinion. Plenty of power and cooling air so what is the advantage to offset the weight and complexity?

    Craig

  23. #123
    snobird's Avatar
    Join Date
    Jan 2002
    Location
    Auburn, ME
    Posts
    385
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    here are some pictures of the rudder off my Viper, note lower hingpoits broken at the pin. upper one pulled from the fin.. also note the control horn is snaped off. not trying to place blame,just warning current owners of the issue..
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Jh16262.jpg 
Views:	23 
Size:	115.4 KB 
ID:	1265196   Click image for larger version. 

Name:	Sn41317.jpg 
Views:	26 
Size:	108.4 KB 
ID:	1265197   Click image for larger version. 

Name:	Rw58795.jpg 
Views:	21 
Size:	116.7 KB 
ID:	1265198   Click image for larger version. 

Name:	Wq42570.jpg 
Views:	23 
Size:	123.1 KB 
ID:	1265199   Click image for larger version. 

Name:	Yj65452.jpg 
Views:	26 
Size:	114.9 KB 
ID:	1265200  


  24. #124

    Join Date
    Dec 2002
    Location
    Avondale , PA
    Posts
    47
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    in looking at the photos of your rudder, I have a thought about a possible problem. While I agree the overall design and supplied hardware may have issues, as well as the "instruction manual" leaving quite a bit to our imagination. I'm not expert, and this is my first jet, but I have done many scale birds and a few Comp-AFR type planes with similar hinging styles.
    Something to look at here is the hinge only being inserted to the leading edge of the rudder. This will creat a side to side movement of the rudder when in place in the fin. The fins trailing edge will then binde as the rudder is deflected left and right and maybe cause failure.
    Properly inserted hinges in this style control will have the hinge pin in line with the center of rotation of the rudder leading edge. On the Viper, this is about half an inch at the bottom hing... you"ll need to recess the rudders leading edge some with a slot to allow the rudder to pivot around the hinge.
    I have attached a couple pix I took with my phone and while not great, you may get the idea of what I'm trying to explain.... although not too well. Sorry! The one photo shows that slot, or recess I filed in the leading edg to allow the rudder to rotate around the hinge. The second pix shows the center of rotation of the rudder hinge piont at the bottom of the rudder. I have marked it with a dot on the tape. As you can see,as the rudder moves left or right, the center dot id in the middle of that rotation. Thats the same place your hinge pin should be set back within the rudders leading edge. With hinges n your location, that center moves left and right... not around itself.
    Again, not an expert, but just throwing in my 2c. With the plane safe on the ground and a new fin/rudder on it's way soon I hope, yu may want to research my basic idea. I spent some time thinking about this when I was hinging and even called down to BVM to get input.
    I hope this helps and doenst offend. If anyone has more to ad or other thoughts, let me know. These things are too expensive to bust up with so much experiance out there!

    Matt
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Sq46788.jpg 
Views:	30 
Size:	130.3 KB 
ID:	1265639   Click image for larger version. 

Name:	Rn39485.jpg 
Views:	26 
Size:	136.4 KB 
ID:	1265640  

  25. #125
    MNModels's Avatar
    Join Date
    Dec 2003
    Location
    Oudtshoorn, SOUTH AFRICA
    Posts
    611
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Another Skymaster Viper

    Hi Matt,

    You are 100% correct. We have found that some glue the pin hinge sticking far out of the LE and TE. You need to cut away the hinge sealing gap so the rudder can be glued closer to the fin post. there should be no play side to side on pin hinges. The whole hinge must be supported by glue. Cutting slots in rudder will do the trick.

    Thanks for posting Matt. I will add this in manual.

    Remember flutter will bend steel. There is no structure strong enough when flutter starts.

    Regards

    Morne
    MNModels
    Skymaster & Xtremejets


Page 5 of 69 FirstFirst ... 345671555 ... LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -6. The time now is 03:51 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.