Under floor

[beebobby]

New 21C. What is under the floor covering? Plywood? I'm installing a couple of runners under the bed and need to know the best way to attach it to the floor.
Thanks

[Ron in BC]

Yes, plywood bonded to the shell. You're fine to use short screws to attach the runners. No more than 1/2" penetration though. If you drill a pilot hole be very careful.

Ron

[beebobby]

Perfect. Thank you. I love this forum.

[John in Santa Cruz]

Yeah, I use the largest diameter stainless screw I can that doesn't protrude more than 0.50" below whatever I'm attaching.

[Iowa Dave]

On the 2013 we have, the plywood is 5/8 inch thick. We used nothing but 1/2 inch screws into the plywood on a couple projects. We measured the thickness of wood being attached and added the 1/2 inch. Did not countersink the screws. Put a piece of tape on the drill bit shaft at the proper depth to know when to stop drilling. I’m not much of a woodworker but my math is solid and I have an on-site inspector who guides me every millimeter of the way. Which is understandable, it’s her rig.
Iowa Dave

[beebobby]

Figured and tested 1.25 Sched 40 PVC as the runners. Countersunk ss screws need to be 2.25" long to not go over .5". All I can find is 2" or 2.5" (of course), so I get to use my grinder again. Woo hoo! If I can keep justifying my tool purchases to complete projects my supervisor (wifely unit) requests, the more tools I can acquire. It's a win, win!

[Iowa Dave]

Bought a beautiful cordless impact wrench to loosen the nuts on the backing plate on the Escape brake assembly.
With the impact socket on I couldn’t get on three out of four nuts. I used a 50 year old 11/16 box end wrench. Worked perfectly. But I did get a good tool that I use every time I rotate the tires or work on other trailers or vehicles. Works great on the blade nuts on the z turn mower too. There is a method to our madness.
Iowa Dave

[John in Santa Cruz]

Originally Posted by beebobby

Figured and tested 1.25 Sched 40 PVC as the runners. Countersunk ss screws need to be 2.25" long to not go over .5". All I can find is 2" or 2.5" (of course), so I get to use my grinder again. Woo hoo! If I can keep justifying my tool purchases to complete projects my supervisor (wifely unit) requests, the more tools I can acquire. It's a win, win!

run the screws into the holes as deep as they need to go, back them out, THEN cut them off. and put them back in. that way you have the point of the wood screw to start the threads. as I said, use as large diameter a wood screw as is practical for the application, like a #14 (at least, tahts what I used to install the pedestal base for my table)

[Ron in BC]

For potentially heavy loads like that I'd rather use a threaded insert.

Ron

[John in Santa Cruz]

Originally Posted by Ron in BC

For potentially heavy loads like that I'd rather use a threaded insert.

Ron

the pedestal base was about 12" or 18" across and had 8 large screw holes, required large flathead screws, so I used the largest flathead that would fit through the hole in the pedestal, it might have been bigger than #14. I found stainless screws the suitable length that were all thread, no shank. they held very securely.

[mcdonner]

Originally Posted by Iowa Dave

On the 2013 we have, the plywood is 5/8 inch thick. We used nothing but 1/2 inch screws into the plywood on a couple projects. We measured the thickness of wood being attached and added the 1/2 inch. Did not countersink the screws. Put a piece of tape on the drill bit shaft at the proper depth to know when to stop drilling. I’m not much of a woodworker but my math is solid and I have an on-site inspector who guides me every millimeter of the way. Which is understandable, it’s her rig.
Iowa Dave

You do have a top notch inspector keeping you on the straight and narrow. As my father always said "Measure twice, cut once".

[Iowa Dave]

Hello Ralph
Hope all is well and you’re getting ready for the spring-summer-fall camping fun. We’ve planned for some rallies and a couple trips so far. If we make any more changes on the 21 it would possibly be installing a Lagun table. Rita kinda likes them. I’m sure you had a great time last fall. I did ok except I had a nutrition problem. Doc said I wasn’t getting enough Ohio candy.
Iowa Dave

[HarleyD]

Originally Posted by mcdonner

You do have a top notch inspector keeping you on the straight and narrow. As my father always said "Measure twice, cut once".

OR,
"I cut it off twice and it is still too short!"

[beebobby]

I thought it was "Measure once, cut twice". And my favorite "SAFETY THIRD". (caps intentional). Never listen to friends.