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.

Results 1 to 18 of 18

  1. #1

    Join Date
    Nov 2002
    Location
    Lock Haven, PA,
    Posts
    68
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    Help with new Jett 426 engine

    Hello,
    I have gotten my first Jett 426 engine. There is not instructions at all with the engine, is there anything special that needs to be done?

    Also how do you set up the remote needle valve? Where should you locate it on the plane.

    This is not user friendly for newer racers at all, workmanship is very nice, but no conventional backplate and no instructions is not what I expected. I knew it did not come with a firewall mount.

    Jorge

  2. #2

    Join Date
    Dec 2004
    Location
    Powder Springs, GA
    Posts
    1,480
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    Go to Jett's web site and it is all covered there.
    Barry...
    http://www.RCPRO.org

  3. #3

    Join Date
    Dec 2001
    Location
    Waseca, MN
    Posts
    8,451
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    I glue a piece of 1/8" aircraft ply about 1/2" wide by 1" long to the side of the fuse just behind the engine head. (head mounted at 3 O'clock when looking at it from the front). Then I drill and tap the holes in the wood to match the holes on the need assembly and bolt it to the side of the plane so the top of the needle clears the top of the fuse by about 1/2". Oh, make sure you fuelproof the wood with epoxy or paint.

    I thought mine came with an instruction sheet. I'll check when I get home, but I may have tossed them.

    Are you using if for a Q500 type plane? If so, take a 8.8" x 8.75 APC prop and cut a 1/2" off each tip for break in. He has break in info on his website, follow that and you will be fine.

    Dub did a great job of creating the least expensive NICE motor for racing, I am thrilled with mine.
    Dave Norman
    29w

  4. #4

    Join Date
    Oct 2005
    Location
    Knightdale, NC
    Posts
    165
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    Dave,

    3 O'clock from the front? or the back?

    TW

  5. #5

    Join Date
    Dec 2001
    Location
    Waseca, MN
    Posts
    8,451
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    Got me, yes, 3 oclock from the back, 9 oclock from the front, with the muffler down the bottom of the fuse.

    thanks for catching that.
    Dave Norman
    29w

  6. #6

    Join Date
    Mar 2004
    Location
    , PA
    Posts
    109
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    How is everyone setting up the fuel shut off?

    David

  7. #7

    Join Date
    Feb 2007
    Location
    Wichita, KS
    Posts
    229
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    Dub has a RNV that mounts to the rear muffler bolt, Way Cool.... lots easier set up !!!

  8. #8

    Join Date
    Dec 2001
    Location
    Upplands Vasby, SWEDEN
    Posts
    7,396
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    Hi!
    You can mount it like this...2-3mm epoxy-glas plate!
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Us53716.jpg 
Views:	36 
Size:	43.0 KB 
ID:	1617779  
    Jan Karlsson - Supplier MVVS Products

  9. #9

    Join Date
    Aug 2004
    Location
    Paola, KS
    Posts
    2,617
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    Jorge -

    I have used the plywood plate on the right side of the fuse just behind the firewall, and I have also used the Jett exhaust bolt mount needle valve. The exhaust bolt mount is easy, but the other one isn't all that bad.

    I've seen fuel shutoffs done by drilling out the hole in the square backplate mount that the throttle linkage was intended to pass through, and slightly chamfering the edge of the hole to avoid cutting the tubing.

    Partially drill into the firewall behind that hole with the same bit (9/32 I believe is what they are using) so that a small wire loop can be pulled back into the hole with the cutoff servo.

    Use the 3/32" ID Sullivan soft silicone fuel tubing, it's easy to squeeze shut. The small loop of wire will pull the tubing back into the hole, folding it over, cutting off the fuel flow. The shutoff is typically between the needle valve and the fuel inlet on the engine.

    I'll see if I can get my friend to provide a picture if he has time. I also use the rotating barrel instead of the venturi. Flying on a grass field, it's nice to be able to shut the air intake prior to landing to help keep things cleaner.



    Out of all the places we could be, this is one of them.

  10. #10
    vasek's Avatar
    Join Date
    Jan 2002
    Location
    Prague, CZECH REPUBLIC
    Posts
    4,032
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    fizz, do you have a pic of the exhaust bolt mount?

    thanks,
    V.
    ORIGINAL: fizzwater2

    I have also used the Jett exhaust bolt mount needle valve.
    Remember: Speed is life!

  11. #11

    Join Date
    Aug 2004
    Location
    Paola, KS
    Posts
    2,617
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    Maybe I can get one tonight, but I don't have one with me right now.

    Out of all the places we could be, this is one of them.

  12. #12

    Join Date
    Aug 2004
    Location
    Paola, KS
    Posts
    2,617
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    Jorge,

    There's a good pic here of the remote needle mounted on the ply behind the firewall, courtesy of Daven

    http://www.rcuniverse.com/forum/m_10549023/tm.htm

    Out of all the places we could be, this is one of them.

  13. #13

    Join Date
    Aug 2004
    Location
    Paola, KS
    Posts
    2,617
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    There's a picture of the exhaust mounted one on an engine on the Jett website:
    http://www.jettengineering.com/accy/remote.html


    last picture, bottom right.
    Out of all the places we could be, this is one of them.

  14. #14

    Join Date
    Mar 2003
    Location
    Over da rainbow, KS
    Posts
    4,871
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    I may mount the next one under the wing inside the fuselage.

    I have never had an easier to operate engine, certainly not one for racing. Just release the fuel line clamp, hook up the battery, and turn it with a starter. If the last run was good, the next one will be too. No need to even look at the needle once the engine is broken in and tuned up. From dry Phoenix air to 98% humidity in the swamps near KC, it ran the same setting.
    - Supplementary insipid innocuous inane vacuous proclamation

  15. #15

    Join Date
    Aug 2004
    Location
    Paola, KS
    Posts
    2,617
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    Highplains - I can't remember - are you using the rotary "carb" shutoff, or the venturi?

    Out of all the places we could be, this is one of them.

  16. #16
    Randy Etken's Avatar
    Join Date
    Aug 2002
    Location
    Shakopee, MN
    Posts
    389
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    Exhaust mount on my R-200.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Xv64648.jpg 
Views:	30 
Size:	120.0 KB 
ID:	1617939  
    Randy E.
    www.Q500Racing.com

  17. #17

    Join Date
    Mar 2003
    Location
    Over da rainbow, KS
    Posts
    4,871
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    Currently the rotary, but am planning on switching over to the venturi.
    - Supplementary insipid innocuous inane vacuous proclamation

  18. #18

    Join Date
    Nov 2007
    Location
    Fritch, TX
    Posts
    1,624
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Help with new Jett 426 engine

    The following site shows how to convert to a venturi and add a 426 engine cut off:

    http://www.nmpra.org/phpBB3/viewtopic.php?f=12&t=2826


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 10:41 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.