1964-1974 [Subscribe to Daily Digest] |
By "Simpson" seat restraints I assume you are referring to a racing style harness of at least 5 point attachment? Simpson is a popular manufacturer of racing harnesses.
I have a 5 point harness installed for the driver's seat of SONEAT, my '68 Sonett "Spyder."
My installation was incredible simple because of the other modifications I'd already made that you won't have the luxury of, but it still won't be all that hard.
Here's a webpage that will help you understand.
http://www.ioportracing.com/Merchant2/merchant.mv?Screen=CTGY&Store_Code=IPRS&Category_Code=RS
First, these belts attach in one of two ways. They either wrap the belt around a bar and double back on themselves into a buckle or are bolted to the car with a bolt-in-end. I used a mix of the two.
You need (at least) five points of attachment.
1. Outside lap: Easy. Bolt-in-end. Use the stock bolt for the shoulder belt.
2. Inner lap: Easy. Bolt-in-end. If you have a Sonett II or V4... Unbolt the U-bar, and bolt down to where it used to be.
*OR*
If you want to keep the U-bar so that the passenger can still use the stock belts, use a big ol' screwdriver to unbend one of the bent-loop ends so that you can slip the bolt-in-end onto the bar. Then close the loop and bolt it all back together.
*OR*
If you have a Sonett III and have the individual inner lap belt latches, just unbolt it and bolt the bolt-in-end in it's place. Lap belts finished.
3. Submarine belt (aka center belt, groin belt). Easy. Bolt-in-end. Drill a hole in the floor and with some VERY large fender washer's (like at least 2" dia, the larger the better) bolt the bolt in end to the floor. You may want to bend/form the washer so that it conforms to the shape of the floor better, like I did. Also you may want to bend the bolt-in-end a little so that it angles up from the floor and keeps the fabric of the belt from being sandwiched between the end and the floor.
4 and 5. Shoulder belts. More difficult. You have a couple of ways to go here. You can use bolt-in-ends. You'll have to reinforce the bulkhead behind the seat in order to give the sheet metal enough strength to be safe. Not to hard. Then drill and bolt in the ends.
*OR*
What I did was bend and install a replacement roll bar. It attaches the exact same way as the stock roll bar (bolted from underneath the bulkhead) but it is 1.5" dia .120wall DOM mild steel tubing. There is a welded bar spanning the gap between the two legs of the roll bar. This is my harness bar. I loop the belts over the harness bar and that's how I attach them.
Any questions?
-STEFAN
posted by 12.111.209...
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