Original Posted By: Larry Nelson
Dale and I looking for ideas / suggestions to prevent bungee chafing on NX18235.We have the Jenny style gear and the 1/2" bungees have been chafing on the bolt heads and nuts.I was out flying today and the plane felt somewhat "mushy" on landing. Looked at the left bungee and saw one wrap cut about 3/4 of the way through. Taxied gently back to the hangar.We are considering using 3/8" bungees and using two independent wraps in case one breaks.Does anyone have an idea to keep the bolt heads / nuts from gnawing on the bungees?Greg CardinalMinneapolis________________________________________________________________________________Date: Sun, 1 Oct 2006 14:41:48 -0700 (PDT)
Pietenpol-List: Bungee chafing
Re: Pietenpol-List: Bungee chafing
Original Posted By: "Dick Navratil"
Subject: Re: Pietenpol-List: Bungee chafingIn a message dated 10/1/2006 2:07:44 PM Central Standard Time, gcardinal(at)mn.rr.com writes:Dale and I looking for ideas / suggestions to prevent bungee chafing on NX18235.We have the Jenny style gear and the 1/2" bungees have been chafing on the bolt heads and nuts.Greg,I'm not clear on how the bunji's chafe on the bolt / nuts, but I think a double wrap sounds like a good idea, as well as a safety strap / cable in the event of a bunji failure. Kevlar is the most abraision resistant of the fibermaterials to use, or maybe you could make some kind of steel cap to cover the bolt / nuts.Chuck G.________________________________________________________________________________
Subject: Re: Pietenpol-List: Bungee chafingIn a message dated 10/1/2006 2:07:44 PM Central Standard Time, gcardinal(at)mn.rr.com writes:Dale and I looking for ideas / suggestions to prevent bungee chafing on NX18235.We have the Jenny style gear and the 1/2" bungees have been chafing on the bolt heads and nuts.Greg,I'm not clear on how the bunji's chafe on the bolt / nuts, but I think a double wrap sounds like a good idea, as well as a safety strap / cable in the event of a bunji failure. Kevlar is the most abraision resistant of the fibermaterials to use, or maybe you could make some kind of steel cap to cover the bolt / nuts.Chuck G.________________________________________________________________________________
Re: Pietenpol-List: Bungee chafing
Original Posted By: gcardinal
Hi GregAs we have talked before, I have had the same problem. The bungees I have bought from ACS as 1/2" actually measure 5/8" and require 3 1/2 wrapps for proper give. Last time I changed I bought 1/2" bungee at 7 Corners Hardware which has true 1/2". Just as you said, I wrapped 2 independant bundles in case of failure. The first is 5 wrapps and the second is 3. Also I found some hard 1/8" thick rubber material that I lined the bolts with to prevent chafe. So far it's working well.Dick N. ----- Original Message -----
Hi GregAs we have talked before, I have had the same problem. The bungees I have bought from ACS as 1/2" actually measure 5/8" and require 3 1/2 wrapps for proper give. Last time I changed I bought 1/2" bungee at 7 Corners Hardware which has true 1/2". Just as you said, I wrapped 2 independant bundles in case of failure. The first is 5 wrapps and the second is 3. Also I found some hard 1/8" thick rubber material that I lined the bolts with to prevent chafe. So far it's working well.Dick N. ----- Original Message -----
RE: Pietenpol-List: Bungee chafing
Original Posted By: "Phillips, Jack"
Re: Pietenpol-List: Bungee chafing
Original Posted By: shad bell
Subject: Re: Pietenpol-List: Bungee chafingGreg,I guess that is why Bernie showed rivets in the F&G Manual instead of bolts down there by the bungees. I looked into getting some large rivets but I couldn't set them with the rivet gun I had. I guess I'll use bolts like everybody else. Larry Williams glued an additional oversize piece of ash on thebottom of the bottom ash block to deflect the bungees outward so they would be"away" from the bolts. Dan HelsperPoplar Grove, IL.________________________________________________________________________________Date: Mon, 2 Oct 2006 12:44:48 -0700 (PDT)
Subject: Re: Pietenpol-List: Bungee chafingGreg,I guess that is why Bernie showed rivets in the F&G Manual instead of bolts down there by the bungees. I looked into getting some large rivets but I couldn't set them with the rivet gun I had. I guess I'll use bolts like everybody else. Larry Williams glued an additional oversize piece of ash on thebottom of the bottom ash block to deflect the bungees outward so they would be"away" from the bolts. Dan HelsperPoplar Grove, IL.________________________________________________________________________________Date: Mon, 2 Oct 2006 12:44:48 -0700 (PDT)
Re: Pietenpol-List: Bungee chafing
Original Posted By: Phillips, Jack
Hi Jack,Yes, I do have safety cables installed. Greg ----- Original Message -----
Hi Jack,Yes, I do have safety cables installed. Greg ----- Original Message -----
Re: Pietenpol-List: Bungee chafing
Original Posted By: HelsperSew(at)aol.com
I think the answer is to find an alternate way of fastening to eliminate exposed threads and nuts and then covering them with thick leather.Greg ----- Original Message -----
I think the answer is to find an alternate way of fastening to eliminate exposed threads and nuts and then covering them with thick leather.Greg ----- Original Message -----
Re: Pietenpol-List: Bungee chafing
Original Posted By: "gcardinal"
Subject: Re: Pietenpol-List: Bungee chafingGreg,What about using clevis type bolts near the bungees? I believe they are of the same strength as regular AN bolts. This would solve the problem on the outsie at least. I think it would look good too, more like rivets. Dan HelsperPoplar Grove, IL________________________________________________________________________________
Subject: Re: Pietenpol-List: Bungee chafingGreg,What about using clevis type bolts near the bungees? I believe they are of the same strength as regular AN bolts. This would solve the problem on the outsie at least. I think it would look good too, more like rivets. Dan HelsperPoplar Grove, IL________________________________________________________________________________