42% QB 260 on a diet

Discussion in 'Plane Registry' started by Bodywerks, Mar 12, 2008.

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  1. Apr 21, 2008 #61

    Showtime

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    Glad to here it Nick. So are you going to 3d her at all? I flew bensons untrimed and i could tell that it watned to 3D. You got to throw down on her a little bit.
     
  2. Apr 21, 2008 #62

    Bodywerks

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    That is what the H9 260 is for now ;)
    maybe after the Shootout (if I make it) I will let loose on her a bit...
     
  3. May 4, 2008 #63

    Dean Bird

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    bodywerks,

    Did you end up with your RTF weight? Any pics of the completed plane?

    What did you use for a spinner? Or are you running with no spinner to save the 6 to 9 ounces?
     
  4. May 4, 2008 #64

    Dean Bird

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    I figured out the stock steel axles and foam tires are a little bigger than 3/16". The stock tires wobble a little on the 3/16" titanium axles we're using.

    http://TroyBuiltModels.com/newsite/planeacc/axles/MPIWA2005T.html

    If anyone orders these, you don't need to order E-clips. The set of two axles comes with 4 clips.

    Anyway, I decided to order some lighter tires. I ordered the 5" TBM foam tires.

    http://TroyBuiltModels.com/newsite/planeacc/tires/tbmfoam.html

    The stock tires are 4.5". These are 5" tires which will help at my field that has gravel in the pit area. The hub on the TBM tires is slightly narrower, so I cut the axle shorter at the outer E-clip groove.

    DSCF0003.JPG

    When I got the tires, they are drilled for a 1/4" axle. I bushed the axle with a 7/32" and then a 1/4" aluminum tube.

    DSCF0004.JPG

    The weight of the stock tires and the full length titanium axles was 6.5 ounces.

    DSCF0002.JPG

    My new setup with the 5" TBM tires and the shorter bushed axles weighs 4.2 ounces.

    DSCF0007.JPG

    I had to make the opening in the wheel pants a little larger to accept the 5" wheels.
     
  5. May 9, 2008 #65

    Dean Bird

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    bodywerks,

    Did you end up with your RTF weight? What did you use for a spinner? Or are you running with no spinner to save the 6 to 9 ounces?

    Any pics of the completed plane?
     
  6. May 9, 2008 #66

    Bodywerks

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    Yes - 37-3/4 pounds(+/- an ounce or two) with pilot and (paper) panel - still no decals.
    I am using a lightened Tru-turn Ultimate spinner on the 2-blade setup, and the weight of the spinner is included in the RTF weight.
    No finished pics yet - i still need decals.
     
  7. May 9, 2008 #67

    Dean Bird

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    Show,

    Where is the new TFC vinyl!! ;)
     
  8. May 9, 2008 #68

    Bodywerks

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    That's what I am waiting on, but I want some custom stuff to go on the side of the fuse in the white section behind the wings - something like
    TEAM
    .....FLYINGCIRCUS
    ......................................................COM
     
  9. May 9, 2008 #69

    Bodywerks

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    BTW, Dean - imagine if I went with an AI foam pilot, CF spinner, and DA 170 with my setup...I'd probably be under 37 pounds!!
    I'll tell you, though, I like the current weight just fine, even for heavy winds. We haven't had anything like 2004 TAS winds, but a steady 15+ at Tucson and Riverside and the plane handled it like a champ.
     
  10. May 10, 2008 #70

    Dean Bird

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    I've got the 5 ounce carbon spinner on the way. I'll have the DA 170. I have the wheels that are 2 ounces lighter.

    But my pilot is a heavy one at 5.8 ounces. Can't deal with the orange foam lumberjack.
     
  11. May 10, 2008 #71

    Bodywerks

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    did you go with the Aeroworks unit? It's nice, but it has room for a diet. Even if you don't diet it, all the wood/glass joints need to be gone over with real glue. I already ejected my AW pilot. Now he's glued down gudentite!
     
  12. May 10, 2008 #72

    quist

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    Yes, I went with the Aeroworks. After 150 flights on the 100cc 260 I have not had to do one repair on a glue joint.

    I will listen to your advise on wieght saving on the Yak. I know you helped JB with the project.
     
  13. May 10, 2008 #73

    Dean Bird

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    No. I have a pilot figure that actually looks like a pilot.

    DSCF0002.JPG
     
  14. May 10, 2008 #74

    quist

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    It is good to "thick neck Dean" is going to be flying again.
     
  15. May 10, 2008 #75

    Bodywerks

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    If you were replying to my post above yours, I was only talking about the Aeroworks pilots - the planes are about as good as you're gonna get with an ARF. The only problem I am having with my 260 right now is the hatch - the covering is bubbling up and because it is painted, it is nearly impossible to iron it back down.
    Oh, I also had a problem with one of the wing dowels! the rear alignment dowel was just kinda flailing around in the wing! I have never had this problem with any of my other Aeroworks planes so I hope it was just a fluke. I ended up having to do a field repair on it and guessing the dowel's proper position. The wing still slides and the dowels align with the sockets in the fuse, so I guess I guessed right.
     
  16. May 11, 2008 #76

    Dean Bird

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    Crap. Now that I'm done taking the plywood out of the fuselage and hatch, I'm going to be ironing the covering on them today.

    That was the next question I was going to post. I have several bubbles on my hatch. Any suggestions?
     
  17. May 11, 2008 #77

    rcgood

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    Did you guys know that you can save a few ounces (and I guess a few $$$) just by replacing the fuel tank with a Coke bottle? I know a guy here that did it on his Carden 40% 260 and still no problems after 200 flights. He sealed the cap to the bottle with a sealant to make sure no air leaks.

    Hey Bodyworks this is off subject but you posted something about your H9 Extra 26 35% and would like to know your opinions on this airframe. Is it a good IMAC plane? Quality, negatives, 3Ds well, etc...???? Do you know what the all up weight is?
     
  18. May 11, 2008 #78

    Dean Bird

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    Novel idea.

    I wonder what sizes the bottles come in. I don't think a one liter bottle is big enough. Two liter sounds way too big.
     
  19. May 11, 2008 #79

    rcgood

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    He's using a 1L bottle which is close to 34oz. What size tanks do you usually have in a 40%?
     
  20. May 11, 2008 #80

    Dean Bird

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    1.5 liter, or 50 ounces.
     

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