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General control line discussion => Open Forum => Topic started by: Paul Taylor on December 10, 2011, 01:02:20 PM

Title: Wheels keep popping the spar on the lower wing! On landings....
Post by: Paul Taylor on December 10, 2011, 01:02:20 PM: I have patched the spar on the bottom wing on my Bi-Slob more then once. On one side it even broke a rib. I am trying to figure out how to keep this from happening.

Any ideas?
Title: Re: Wheels keep popping the spar on the lower wing! On landings....
Post by: John Kelly on December 10, 2011, 01:54:11 PM: Hey Paul... Simple, build it the way we did with both the original SLOBS and BI-SLOBS. Eigth inch ply l.g. former, angled forward.
Title: Re: Wheels keep popping the spar on the lower wing! On landings....
Post by: greg maclachlan on December 10, 2011, 02:10:36 PM: This is what I did after rebuilding the spar/front end a couple of times.
Title: Re: Wheels keep popping the spar on the lower wing! On landings....
Post by: dave siegler on December 10, 2011, 02:59:23 PM: I don't know. Land softer y1
Title: Re: Wheels keep popping the spar on the lower wing! On landings....
Post by: Garf on December 10, 2011, 03:45:45 PM: 1/4 scale R/C gear and 4" balloon wheels.
Title: Re: Wheels keep popping the spar on the lower wing! On landings....
Post by: Bill Hodges on December 10, 2011, 03:47:50 PM: Use the alum gear from an All American or Barnstormer kit. We have been doing that for quite a while and it solves the broken spar problem. You can get them from Brodak.

Bill Hodges
Title: Re: Wheels keep popping the spar on the lower wing! On landings....
Post by: Zuriel Armstrong on December 10, 2011, 03:56:57 PM: Stop letting me fly it and stop hitting the ground VD~
Title: Re: Wheels keep popping the spar on the lower wing! On landings....
Post by: Russell Shaffer on December 10, 2011, 08:52:37 PM: If it is from the gear spreading too much, solder a spreader bar of 1/16 wire between the gear legs. Two wires are much harder to bend than one.
Title: Re: Wheels keep popping the spar on the lower wing! On landings....
Post by: Wynn Robins on December 10, 2011, 09:31:44 PM: Land softly. LL~ LL~ LL~ LL~ LL~
Title: Re: Wheels keep popping the spar on the lower wing! On landings....
Post by: kenneth cook on December 11, 2011, 05:32:10 AM: Paul when Dan and I were flying our slobs we would get carried away hitting the ground too hard and that would always happen. I repaired it and it did it again and again. I asked him what should I do with it. He tried using spruce on his bottom spar and it still did it. He said pull out the broken pieces and cover over it. I had to laugh. Ken
Title: Re: Wheels keep popping the spar on the lower wing! On landings....
Post by: Lester Nicholson on December 11, 2011, 06:02:06 AM: With mine I put in 1/8" balsa plates between spars and it broke again on next landing so then I added a 1/8" ply plate and used an aluminum R/C gear I had laying around from who knows what. End of problem until a wind gust threw the airplane half way across the circle at me. At 65 I'm unable to run fast enough to keep the lines tight. Need to build another but the gear/spar assembly survived. lol Nick
Title: Re: Wheels keep popping the spar on the lower wing! On landings....
Post by: Bill Little on December 11, 2011, 08:37:11 AM: Quote from: Paul Taylor on December 10, 2011, 01:02:20 PM
I have patched the spar on the bottom wing on my Bi-Slob more then once. On one side it even broke a rib. I am trying to figure out how to keep this from happening.

Any ideas?

Hi rootbeard!

Like the guys say, an aluminum gear mounted sorta like the one in the Vector you just did. ;D

Big Bear
Title: Re: Wheels keep popping the spar on the lower wing! On landings....
Post by: Paul Taylor on December 12, 2011, 02:00:34 PM: Yep. Think that is what I will do....