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  1. #201

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    RE: JET LEGEND VIPER BUILD THREAD

    WHere is the best place to order this jet? I want to buy two the same scheme.

  2. #202
    madmodelman's Avatar
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    RE: JET LEGEND VIPER BUILD THREAD

    Don't know in the states but Jeff Sewell of Zedjet in the UK will be the best guy to advise you, jeff.sewell@virgin.net
    Stuka, P51, Super Chipmunk, Super Stearman R170, BE2e, Javelin, F16, L39, F86, Viperjet and at long last an F4!!

  3. #203
    Jeremy_D's Avatar
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    RE: JET LEGEND VIPER BUILD THREAD


    ORIGINAL: essyou35

    WHere is the best place to order this jet? I want to buy two the same scheme.
    Talk to Mike at www.globaljetclub.com

    He has the various combos available. The Canadian version came with all servos pre installed, air system and HD servo Ext leads. Took less than a week for my customer to put it together.
    Global Jet Club Australia
    www.aussiejet.com
    http://www.facebook.com/aussiejets

  4. #204

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    RE: JET LEGEND VIPER BUILD THREAD

    Thanks guys, are the wings and tail parts glass on this or are they monokoted (chinakoted).
    Are the front adn back gears both trailing link?

    Also, does anything a K80 might not fly this too well/fast?

  5. #205

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    RE: JET LEGEND VIPER BUILD THREAD

    They are all fiberglassed, no Monokote at all.

    Yes, all trailing links,

    K80 still can make it go fast. It's a great size engine for this plane either slow or fast. Jeremy has a P80 which is heavier but flies beautifully.

    Going to Best in the West this week.

    Emai us at info@rgihq.com and we can get you a Viper.

    Attached is a picture of the scale paint scheme. This' just flown by a member who has a dialed down Jetcat 160 Titan!

    Here is his comment

    "Mike,I test flew the Viper Jet today and it was flawless,The plane is amazing in every way,and I had four flights I installed my JetCat 160 TiTan tuned down to 115,000,rpms and it was perfect,Everyone loved it.Thank you Thank you ,Thank you.Please see attached photos,Sincerely M.S"

    Mike

    ORIGINAL: essyou35

    Thanks guys, are the wings and tail parts glass on this or are they monokoted (chinakoted).
    Are the front adn back gears both trailing link?

    Also, does anything a K80 might not fly this too well/fast?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Global Jet ARF PRO- Air-C-Race-Germany, CNC-Italy, Feibao, Gryphon/Redwings, Der Jet, Jet Legend, Ripmax Xcalibur, Aurora & more - globaljetclub.com

  6. #206

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    RE: JET LEGEND VIPER BUILD THREAD

    I was REALLY wanting this jet but my friend kept looking atht e skymaster version. For some reason it looked better and I figured out why.

    The tail on the jet legend is not right at all. Vipers have highly swept tails like an f-86. This viper barely has any sweep and it makes it look "shock jet" like.

    BUMMER.

  7. #207
    madmodelman's Avatar
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    RE: JET LEGEND VIPER BUILD THREAD

    You have only just noticed that!!?
    Why not pay twice the price then, it's a Sport jet for gods sake.
    Stuka, P51, Super Chipmunk, Super Stearman R170, BE2e, Javelin, F16, L39, F86, Viperjet and at long last an F4!!

  8. #208

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    RE: JET LEGEND VIPER BUILD THREAD

    The skymaster is not twice the price....

    I'm just saying it looks bad like that. I may be able to live with it though for the price. It sure is cheap and sounds like quality is ok.

    Now get those panties unbunched.

  9. #209
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    RE: JET LEGEND VIPER BUILD THREAD

    You are correct, there are quite a few noticeable differences including the size, fin, stab etc.

    It is smaller than the 2m SM version at only 1.8m wingspan, A lot Lighter, No gear doors, Basic cockpit available upon request, externally painted stock standard

    Price is almost the same. SM painted is $2895 and includes scale L/G. Air kit. Fuel Tanks. Tailpipe. Cylinders. Hardware. cockpit details

    Global Jet Club version at $2895 includes - Painted ARF (Pre hinged, all control horns pre installed and painted to match paint job)+Installed landing gear system with carbon flex plates (nothing to do here, even the airline and valves are all done for you, + digital retract and brake controllers installed + installed air lines and hd servo wires+standard scale cockpit & Installed HV 20kg Digital Servos (Canadian version in my scheme was this combo),

    I've attached a photo of mine as I received it (I got mine without the servos installed but everything else done for $2290)

    Here is a link to the various combos available and a heap of photos.

    http://www.globaljetclub.com/index.p...roduct_id=2315


    It really depends what you want at the end of the day. Both models are great and which ever way you go I'm sure you will have a blast

    Cheers

    Jeremy
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    Global Jet Club Australia
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    http://www.facebook.com/aussiejets

  10. #210
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    RE: JET LEGEND VIPER BUILD THREAD

    Some airborne photos
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    Global Jet Club Australia
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  11. #211
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    RE: JET LEGEND VIPER BUILD THREAD

    Hi,

    I changed the tanks and cuted out the airintakes ducts.
    Reason, to get the tank more back.
    The new tank takes 2,5l and it is more than enough.

    I installed 4 LED's (25.000mcd) as landinglights in the wings.

    Christian

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  12. #212

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    RE: JET LEGEND VIPER BUILD THREAD

    Hi Christian,

    Why do you connect the turbine mount and the tailpipe with electrical cable? (third picture red cable)

    Azzam

  13. #213
    VF84sluggo's Avatar
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    RE: JET LEGEND VIPER BUILD THREAD

    Looks like a grounding strap. Good question.


    ORIGINAL: phantom_najd

    Hi Christian,

    Why do you connect the turbine mount and the tailpipe with electrical cable? (third picture red cable)

    Azzam

  14. #214
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    RE: JET LEGEND VIPER BUILD THREAD

    Hi guys,
    Glad to see you again.
    On October 20, My good friends and itook part in the flight party, a lot of people andplanes.
    Continue to enjoy my little JL viper jet.But this outing flight, I feelso tired and a bit impatient mood thatnot satisfied with flights.
    Looking forward to fly better next time.Share the photos and video below

    video: http://www.tudou.com/programs/view/cdMfYoQ6xJo/

    Regards
    William
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    Growth in flights ...

  15. #215
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    RE: JET LEGEND VIPER BUILD THREAD

    Hi,
    Photos uploaded successfully today.Sorry.
    Growth in flights ...

  16. #216

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    RE: JET LEGEND VIPER BUILD THREAD

    what is the tank capacity on this jet?

  17. #217
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    RE: JET LEGEND VIPER BUILD THREAD

    2x 1.5 ltrs
    Stuka, P51, Super Chipmunk, Super Stearman R170, BE2e, Javelin, F16, L39, F86, Viperjet and at long last an F4!!

  18. #218
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    RE: JET LEGEND VIPER BUILD THREAD

    Hi Azzam,

    the red cable is a ground cabel.
    In the past (in the 35 MHz time) we had sometimes problems with static charging and some receivers stopped working.
    But no problems in the last years with 2,4 GHz equipment.
    Further I use Jet Cat anti static liquid.
    I do this only to ressure me because the F-40 fuel has it already.

  19. #219

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    RE: JET LEGEND VIPER BUILD THREAD

    HI, Each tank is 58oz, with two tanks is 116 oz, total.

  20. #220
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    RE: JET LEGEND VIPER BUILD THREAD

    Another great day with the viper. I have to say the P80se is a perfect engine for this plane. It cruises around at 1/2 throttle with ease and gives huge vertical climbs at full stick. I've now added some mix into my first stage flaps to stop the roll and it is behaving much better now.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Global Jet Club Australia
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  21. #221

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    RE: JET LEGEND VIPER BUILD THREAD

    Anyone care to share the seros they used?

    I am thinking hs645MG on the wings and the rudder and steering and somehting like a JR8711 on the elevator. Is there a need for a gyro on the rudder due to dutch roll or is this jet pretty solid in the air?

  22. #222
    Mark Vandervelden's Avatar
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    RE: JET LEGEND VIPER BUILD THREAD


    Hi Essyou35

    The JR 8711 or evan an 8511 for the elevator is ideal, there are very few servos better than the JR range of servos.

    The Viper will "Wiggel" a littel in the air abit when its bumpy but usaly tracks nicely most of the time, on the ground its straight as an arrow
    I cant see that a gyro would hurt but its not realy nessersery, I will pop one in for the next outing a see how it reactsand let you know.

    The Hitec 645 however is a analog 7-9kg servo, I have used them often on nose wheel steering as there inexpensive with strong gears.
    Unfortunately there holding power is not all that good, in fact plug one in and then physically try to push the servo arm away from neutral.
    You will be surprised how far and easily it will move and then bounce back when released, an ideal set up for flutter when flying at speed.

    This tends to be a trait of non digital servos but quite noticeable on the 645, perhaps OK for smaller slower flying airframes but not the best servo for a fast jet.

    On my Viper I used JR 8421 on theflying surfaces but any good digital servo of around 8kg will do but do the "bounce" test to be sure of it holding power as that's what counts.

    Ive found the holding power of the 8421 is very good, its metal output gear gives strength were needed on the spline and the remaining plastic gears result in low backlash.
    The JR 8411 is exactly the same servo but are fully metal geared, after a "lot" of use they can develop some backlash but it takes a lot of flying!.
    You don't need a super high tork Digi servo and defiantly not a silly fast one but do set up the servo arm to horn linkages to use all the available servo movement.
    It would be silly using 10Kg servos at only 50% travel rate to archive full control throw at the flying surface as surly its then only a 5Kg servo?

    One servo I avoid on an elevator is the Hitec HS-7965MG Digi servo, although its rated at 8-10Kg Ive found its holding power alarmingly bad.
    See the vid at the bottom here of one I removed from the elevator linkage of a JL Hawk bought built thatI was asked to check outbefore it got a chance to fly!!
    Unfotanatly Itsuninformed or misleading servo specs and poor setupsthat get airframe manufactures a bad name when its usually the poor install "out of there control" that's actually to blame.

    Here is a vid of a HS 645 servo on both a fully charged 4 cell nims pack and on a reg at 5.3v, its not realy much better on 6v,I would not recommend use of this servo on a primary control surface?
    If you have a look at my u-tube channel you will see some other random servos tested, not very scientific I know as I simply twist or push as hard as I dare, but it gives a good insight and weeds out the rubish.

    http://youtu.be/FnUNjnPfT2Y
    Jeti DS 16, Wren 160, 100, 44, and Jets-munt 140XBL Turbines, Jetlegend Yak 130, Mig 29, F15 1/7th, Alpha Jet , Viper Jet, Airworld Hunter.

  23. #223
    Jeremy_D's Avatar
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    RE: JET LEGEND VIPER BUILD THREAD

    I used Futaba S3051HV (10kg Dig MG) on all surfaces except the Elevator where I used a Futaba BLS155 (18kg BL MG Digital)

    As modelmancan said above, a Gyro is not really needed, it is a very stable airframe. Nice wide LG stance on the ground means it sits and on take off it tracks very straight. Slow speed is also nice, with full flaps and power it is still very very stable and can still be turned fairly tight.
    Global Jet Club Australia
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  24. #224

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    RE: JET LEGEND VIPER BUILD THREAD

    Jeremy I like your servos.

    Can someone tell me how long they fly for? Say with a K100 or something like that, p80 etc. My f-86d I flew 4 min 30 sec then had to land with 1.5 min to spare.

  25. #225
    Mark Vandervelden's Avatar
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    RE: JET LEGEND VIPER BUILD THREAD



    Hi

    Mine flew for 8 mins with 1/4 of one tank left to spare with the T12 120 turbine flying aggressively
    With the Wren 100 I get 9 + minuets with 1/3 of one tank left again flying aggressively.
    Its a clean machine so you don't need high throttle very often so 18-27lbs of thrust goes a long way!

    Jeti DS 16, Wren 160, 100, 44, and Jets-munt 140XBL Turbines, Jetlegend Yak 130, Mig 29, F15 1/7th, Alpha Jet , Viper Jet, Airworld Hunter.


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