Mounting Steps Set Screw/Bolt

[Lynnb]

So I'm looking at mounting the steps and have read all about inserts, larger bolts and access panels. My main concern is keeping them tight, I've seen at least one plane where the steps have become loose. I was wondering what the group thought of just adding another screw or bolt off to the side that is tapped and threaded through the mount and step just to lock the step in place. I wouldn't drill all the way through. I am working on a QB so Van's has already drilled the main hole, might take it to AN4 as others have suggested as well, thoughts?

 

[rleffler]

I would recommend these step bushings:

http://www.tcwtech.com/rv-10_construction_project.html

 

[Lynnb]

Thank's Bob. Are you using these and do you have the loose step issue? I'm not an engineer, but I just don't see how this bushing would tighten up step, or work any better than just cross drilling. I was going with the step screw idea since I have a QB and the odds of me drilling for a cross bolt and getting the hole straight are pretty slim.

Thanks.
Lynn

 

[rocketman1988]

Step

I used these bushings and they worked great...

 

[AviatorJ]

Just ordered some myself. Waiting on Vans though to send me the AN3-20A bolts, apparently they were supposed to be installed to hold the temporary bar on the quickbuild, but on mine they used a couple wood screws.

 

[leok]

Lynnb,

The step loosens because the bolt crushes the tube, loosing tension. Adding the insert provides support to the tube allowing the bolt to stay tight.

 

[AviatorJ]

http://www.tcwtech.com/rv-10_construction_project.html

Received my Step bushing today. Seemingly high quality pieces. Was initially concerned about the fit but they were spot on, snug but not too snug. Litterally took me less than 10 mins to tap them down into place.