Thorp T-18 Mutual Aid Society
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 Thorp T-18
 Fuselage & Empennage
 Floorboards...
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firepilot1

USA
29 Posts

Posted - 07/13/2011 :  05:02:45  Show Profile  Click to see firepilot1's MSN Messenger address  Send firepilot1 a Yahoo! Message  Reply
Can anyone tell me where to find the newsletter, photos, or drawings of the removable floorboard mods? I think I have seen these somewhere on this site but I cannot locate them.

Tim A.

Stephen Peirce

USA
34 Posts

Posted - 07/13/2011 :  06:37:41  Show Profile  Reply
Several NewsLetters back Roy Farris provided Info on a Reduce Size FB panel. Now I'm not sure if he could get his fuel tank thru it so you have to take that into account. My self and Don DD built ours as a single peice with the rudder peddles attached to the panel. I place an extra angle on the firewall with plate nuts attach to it and a doubler on the aft bulk head with a double row of plate nuts all 8-32. Plate nuts down each Fus side stringer. I dimpled my panel, although you might want to counter sink since it's .040. Your call.

Stephen R. Peirce
S/N#078 Ph 256-461-0233
Rocket City
Huntsville, Alabama

Edited by - admin on 11/07/2011 11:00:00
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leewwalton

USA
1041 Posts

Posted - 07/13/2011 :  07:10:56  Show Profile  Send leewwalton a Yahoo! Message  Reply
Tim,
There are basically two (or three) ways to modify the floorboard to make it removable. The writeup by Roy is very good (Newsletter 142)and is the latest and greatest version.

But, as you are modifiying an existing airplane and not starting from scratch there is simpler method which involves simply drilling out each rivet and replacing each on with an 6/32 or 8/32 nutplate and machine screw.

I was in your shoes not long ago and went with the later.

Lee Walton
Houston, TX
N589LW,N51863
KDWH

Edited by - admin on 11/07/2011 11:00:00
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leewwalton

USA
1041 Posts

Posted - 07/13/2011 :  07:40:19  Show Profile  Send leewwalton a Yahoo! Message  Reply
Ha! Looks like Steve and I posted at the same time ... basically ditto what he said!

Lee Walton
Houston, TX
N589LW,N51863
KDWH

Edited by - admin on 11/07/2011 11:00:00
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firepilot1

USA
29 Posts

Posted - 07/13/2011 :  09:20:16  Show Profile  Click to see firepilot1's MSN Messenger address  Send firepilot1 a Yahoo! Message  Reply
Thanks Steve and Lee. I am looking over the write-up in NL 142 now. This is not quite what I was looking for but will work even better than what I was thinking of. I thought I had seen where someone made two removable panels beneath the seat to allow one to stand inside the cockpit while working on the panel and under the panel??

Tim A.

Edited by - admin on 11/07/2011 11:00:00
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TWMUNDELLJR

USA
15 Posts

Posted - 07/13/2011 :  15:37:19  Show Profile  Send TWMUNDELLJR a Yahoo! Message  Reply
MR. TIM;
IT LOOKS LIKE LEE AND STEVE HAVE YOU ALL FIXED UP ON HOW TO DO YOUR FLOOR. MY FLOOR IS REMOVABLE WITH 8-32S AND RUNS FULL WIDTH FROM THE FIREWALL TO THE AFT OF THE SPAR. THIS IS NICE FOR OPENING UP FOR INSPECTIONS. MINE HAS 4 ANGLE LONGERONS THAT RUN FROM THE FIREWALL TO THE FRONT OF THE SPAR. THE RUDDER BRACKETS HAVE A BOLT THET HELPS SECURE THE FLOOR. I'VE HAD THE THORP 3 YEARS NOW AND WHEN I DID MY FIRST ANNAUL, ME BEING A GOOD SIZE FELLOW, HAD A TIGHT FIT TO GET IN AND REMOVE THESE BOLTS. WHILE I HAD THE FLOOR OUT, I DECIDED TO CUT IT IN 2 PIECES AND I DID SO 1 INCH AFT OF WHERE THE RUDDERS BOLT UP. I MADE A NICE FLANGE WHERE IT GOES TOGETHER AND NOW I JUST REMOVE THE REAR 2/3 OF THE FLOOR. IF THERE IS A NEED TO GET FURTHER FORWARD, I CAN REMOVE THE RUDDER BOLTS WITH EASE FROM THE BOTTOM AND TAKE THE REST DOWN. THIS MAKES IT EASIER TO GET BEHND THE PANEL.
GOOD LUCK IN MAKING YOURS.

I KNOW OF 2 S-18S THAT HAVE A PANEL UNDER THE RIGHT SEAT THAT CAN BE REMOVED WHERE YOU CAN STAND ON THE FLOOR AND THATS GREAT FOR WORKING ON THE FRONT OF THE PANEL, BUT STILL TIGHT FOR GETTING BEHINDIT.

LATER;
TANKER TED; N18NH, KERSEY, CO AND PORTERVILLE, CA

Edited by - admin on 11/07/2011 11:00:00
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Rich Brazell

USA
911 Posts

Posted - 07/13/2011 :  18:10:07  Show Profile  Reply
You mean like this ? I have one for the other side. You can stand, kneel or crawl under the dash. 3/4 plywood. Throw a pillow/cushion/towel on top to make it a little easier on the bones.

RB

Image Insert:



Tim: I guess I miss read your post. I saw an S-18 at PTV (Mike Archer...CSA) that had the removable floor UNDER the seats so you could stand in the cockpit. I don't remember seeing anything on the Forum or in the archives ?

Edited by - Rich Brazell on 07/14/2011 06:15:42
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TWMUNDELLJR

USA
15 Posts

Posted - 07/13/2011 :  19:27:32  Show Profile  Send TWMUNDELLJR a Yahoo! Message  Reply
HI RICH;
YEPPER! I GOT THEM TOO AND ALSO HAVE A PIECE OF 3/4 BY 6" THAT WILL LAY ON TOP OF THE TUNNEL WITH A LITTLE PILLOW. HAVE BEEN FOUND THERE SNOOZING WHEN I SHOULD HAVE BEEN WORKIN!

LATER; TANKER TED; N18NH

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