Grumman 870

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Grumman 870

Home > Discussion Forum > Bus Conversions - Transit

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All Messages in Thread	Author	Date
Grumman 870	Dave	6-6-99
Can anyone advise how to remove the ceiling mounted hand rails in a Grumman 870. They have a very thin line of adhesive and sufficient rivets to hold in position while the adhesive set. Have not tried heat fearing the inner ceiling skin may delaminate from the foam core. If anyone's - been there, done that, would appreciate your help. Dave.
Re: Grumman 870	DAVE MEHLMAN	8-1-99
Can anyone advise how to remove the ceiling mounted hand rails in a Grumman 870. They have a very thin line of adhesive and sufficient rivets to hold in position while the adhesive set. Have not tried heat fearing the inner ceiling skin may delaminate from the foam core. If anyone's - been there, done that, would appreciate your help. Dave.
Re: Grumman 870	Jmaxwell	6-9-99
Been there, done that. You will have to get a thin wide knife blade and cut the epoxy for about 8-10 feet after you grind the rivet heads off. After you get about 10 feet of it loose, just start pulling down on it and it will pop off. I used a stiff 3 inch putty knife, sharpened and drove it in to cut the epoxy. Try starting in the rear in case u scar the ceiling, which u can smooth out with gel Bondo. Can anyone advise how to remove the ceiling mounted hand rails in a Grumman 870. They have a very thin line of adhesive and sufficient rivets to hold in position while the adhesive set. Have not tried heat fearing the inner ceiling skin may delaminate from the foam core. If anyone's - been there, done that, would appreciate your help. Dave.
Re: Grumman 870	Gene	6-11-99
Just finished doing that. Took me two days of experimenting to get it done. I think the adhesive they used could work on many things. Knocked the heads off the rivits on the rail. Hammered it to death or should I say hammered myself to death. Tried a saws all. Last resort for me was to apply heat with the heat gun directly to the hand rail bracket where it meets the ceiling. I heated about five feet at a time then using a pry bar and a block of wood to protect the ceiling I pried and installed wedges untill the glue broke loose. I went on down the line untill it came down. You need two people if possible at the end. A 35ft.hunk of metal can be heavy and cumbersome. The Second one came down ok but the first on was a battle all the way. Side note-I was wondering if taking the rails down will affect the integrety of the roof? I am hoping the cross framing I will do in order to secure the plywood ceiling will help with the support. Gene
Re: Grumman 870	Jmaxwell	6-13-99
Removing the rails will not effect the integrity of the roof as they are not integral parts of the roof structure. It has alum. I beams on 7' ctr.(look closely and you can see where the alum./ sheet is bonded to them.) I carpeted directly to the aluminum roof, after using gel bondo to repair the scuffs where I pryed to start the take-down on the rails. Just finished doing that. Took me two days of experimenting to get it done. I think the adhesive they used could work on many things. Knocked the heads off the rivits on the rail. Hammered it to death or should I say hammered myself to death. Tried a saws all. Last resort for me was to apply heat with the heat gun directly to the hand rail bracket where it meets the ceiling. I heated about five feet at a time then using a pry bar and a block of wood to protect the ceiling I pried and installed wedges untill the glue broke loose. I went on down the line untill it came down. You need two people if possible at the end. A 35ft.hunk of metal can be heavy and cumbersome. The Second one came down ok but the first on was a battle all the way. Side note-I was wondering if taking the rails down will affect the integrety of the roof? I am hoping the cross framing I will do in order to secure the plywood ceiling will help with the support. Gene