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 4 of 4 FirstFirst ... 234
Results 76 to 84 of 84

Thread: Delta


  1. #76
    combatpigg's Avatar
    Join Date
    Nov 2003
    Location
    arlington, WA
    Posts
    17,890
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Delta

    Hi Mr Clean! If you run into OzMo, say Hi for me, but give him a wedgie, too. He seems to be having more than his fair share of fun
    Is your BullDawg a flat sheet wing? I'm trying to make sense of the original poster's troubles and also looking back on "the way it is" with PBFs.
    Like I've said before, I've got some 1/2A flat wingers that don't oscillate near zero AoA, but have built larger and heavier versions that do. After running the CGs back and forth, I can't call it pitch sensitivity, it's more like when loaded down past a certain point, flat airfoils have a basic flaw that makes them unable to cope with speed. Keep them light enough and all is OK.
    WHO GUNNA FEED MAW KEEEIDS..???

  2. #77
    mclina's Avatar
    Join Date
    Dec 2006
    Location
    Westford, MA
    Posts
    1,809
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Delta

    I am pretty sure that my problems were with the CG and with my short attention span. After this thing failed to fly on the second attempt, I think I just decided I had other uses for the engine and radio gear.

    You should see the pile of SPADs in the corner of my basement....

    Someday, maybe later this winter, I really want to build a delta that will fly.

  3. #78
    Clean's Avatar
    Join Date
    Apr 2002
    Location
    Parkville, MO
    Posts
    1,376
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Delta

    Yes the Bulldawg from the SpadDawg's website is two sheets of 4 mil with a box on it. I flipped it over and made what I call a TopDawg for easier launches though I had problems with my cleaned up one, my first one was my bulldawg flipped around. My control surfaces were locking up because my servos attached at the very center and the wing bows pretty good. Servos in the center of the aileron gives no problems. But it's pretty stable surprisingly enough, course it's not light either.

    http://spadworld.net/gallery/display...10161&pos=-461


    Intentional landings WITH a PBF are not
    the intentional design OF the PBF

  4. #79
    combatpigg's Avatar
    Join Date
    Nov 2003
    Location
    arlington, WA
    Posts
    17,890
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Delta

    Thanks for the link to SpadDawg. I couldn't make out enough detail to see what is going on, though. By saying 2 sheets of 4 mil, do you mean they are laying in a sandwich up to the hinge line of the elevons? Criss-crossed? It looks like an ingenius set up, especially for those days around here when the ground is soggy.
    Getting a stash of 2 mil is on the "to do" list this year to try a project like this with.
    WHO GUNNA FEED MAW KEEEIDS..???

  5. #80
    Clean's Avatar
    Join Date
    Apr 2002
    Location
    Parkville, MO
    Posts
    1,376
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Delta

    You might be able to make a 2 mil 15 size version of the dawg, but the full size are 4 mil. In the uk they have a CoroRoo and it is essentially the same thing however it is a center 4 or 6 mil sheet with a carbon rod for a spar, then with a top and bottom 2 mil sheet, so it's actually 2 mil thicker all together but it gets down the road just as quick.

    That is the nice thing about SPADs, clean em, don't clean em, don't worry about water damage, it's all fuel proof already. Only have to worry about tank leaks getting the gear wet.

    They bounce pretty good too.
    Intentional landings WITH a PBF are not
    the intentional design OF the PBF

  6. #81

    Join Date
    Dec 2006
    Location
    ISB, PAKISTAN
    Posts
    49
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Delta

    what should be the dimensions for the 15 size ?

    Regards

  7. #82
    Clean's Avatar
    Join Date
    Apr 2002
    Location
    Parkville, MO
    Posts
    1,376
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Delta

    Don't know, I wouldn't cut it in half though, It'd have a bigger wing than the full size, you won't have as much horsepower to propel through the air at a high enough rate for lift. Maybe, 3/4 size? 2 sheets just like the original and a folded 2 mil fuse.
    Intentional landings WITH a PBF are not
    the intentional design OF the PBF

  8. #83
    Clean's Avatar
    Join Date
    Apr 2002
    Location
    Parkville, MO
    Posts
    1,376
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Delta

    Even sent an email to his club. Still no joy.
    Intentional landings WITH a PBF are not
    the intentional design OF the PBF

  9. #84
    Clean's Avatar
    Join Date
    Apr 2002
    Location
    Parkville, MO
    Posts
    1,376
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: Delta

    Come on Avvro, you're killin me here.
    Intentional landings WITH a PBF are not
    the intentional design OF the PBF


Page 4 of 4 FirstFirst ... 234

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 08:31 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.