Forum for discussion of MG and MGB motorsports, historic and current (SCCA, NASA, VARA, etc) car preparation, engine, bodywork, suspension, drivetrain modification.
OK, I recently got a brand new Bell Sport helment SA2010, the helmet had two rubber plugs in the appropriate place for the Hans tethers quick release to thread into, but it is not threaded, and the Hans piece threads into the helmet, so how do you go about getting the correct threaded insert for your helmet, I went to the hans site and saw nothing about it.
Perhaps this video will answer your question, Hap.
HANS installation
There are two washer looking pieces with captured nuts that go inside the helmet underneath the padding. My Bell had the holes, but I had to drill the Simpson.
You shouldn't need the backing plates then. Glad to hear you found one for the Mitty.
When I installed posts on mine, had to drill helmet and use a washer with a captive nut on inside, under the padding. It was next to impossible to get the wrench onto the nuts....
Okie
Hap, I added the Hans buttons to my helmet earlier this winter and it wasn't too bad. I was able to use a plastic scraper that I dulled down a bit to gently pry the lining up a bit and guide the nut and washer piece into position using the thin wrench provided in the button kit. In my case my helmet wasn't drilled so I also had to mark and drill the holes. Still only took me about an hour to get it done without any damage to the lining. Just go slow and easy and don't try to pull the lining and padding back any more than absolutely necessary and you should be fine.
This "kid" explains how to do it. Now, if I can just find his video an programming a VCR.
http://www.youtube.com/watch?v=wZgunSvhOEA&feature=player_embedded#!