Retractable Seat Belts

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  • #236018
    newkitman
    Participant

    @newkitman

    Thinking of installing the set of Karmann Ghia Retractable seat belts on Moneypenny. I have a bench seat back but bucket seat cushions. I would install the retractor bolted to the floor pan, the triangular pivot for holding the belt over the shoulder on the inside of pillar just above the door hinge and the buckle portion secured to the original tunnel bolt location. Think it’ll work? What about a universal belt?

    Allen Caron
    VW based 53MGTD - "MoneyPenny"
    "If one thing matters, everything matters" - from the book The Shack

    #267232
    Toller
    Participant

    @toller

    Suspect shoulder belt may be uncomfortable unless your left shoulder is below level of bench back seat. In most modern vehicles the shoulder connection is adjustable in vertical plane to accommodate height of drivers. Maybe a 5 point harness with straps going over both shoulders parallel to one another will provide the additional safety you are looking for

    David B Dixon
    Port Perry ON CA
    Sabine

    #267233
    John Simion
    Participant

    @johnsimion

    I am installing no retractable shoulder belts in my car. I am bolting them to the tunnel behind the seat, the tunnel at the side of the seat, and the frame at the side — the shoulder portions are in the center and the buckles will be at the sides of the car. The sides are held in place with plastic sleeves. This keeps the belts out of the doors. It should also be comfortable because my seats are much taller than average so the seat top is above my shoulder. I would not suggest bolting to fiberglass.

    #267234
    KentT
    Participant

    @kentt

    Allen,

    Without something that holds the shoulder belt up higher than the level of your shoulder when seated, I would not recommend it. You risk breaking a collar bone or that shoulder belt pushing you down and out under the lap belt (aka submarining) in a hard collision. Additionally, you need something that keeps that shoulder belt correctly positioned on your shoulder, instead of up against your neck or off the shoulder. You have neither with the typical bench seat back.

    That’s one of the reasons I decided to buy high-back PRP seats that have shoulder belt slots built-in. Even then, I’m going to run only lap belts until/if I can get a rollbar with either a harness bar or harness attaching points built and installed.

    In a collision, the floor mounted shoulder belt would push you down into the seat hard enough to cause serious injury. The installation instructions for the retractable 4 point harnesses specifically warn against floor mounting, and no more than 45° below the top of your shoulder or belt slots. KentT2016-02-09 17:03:54

    Early FF TDr on 69 VW pan
    Slowly coming back from the ashes...

    #267235
    newkitman
    Participant

    @newkitman

    According to the GA Dept of Transportation, Moneypenny doesn’t need shoulder restraints. Just was thinking of using them in case but it doesn’t sound like it’d be such a hot idea. I’ll stick with my lap belts. Thanks for the input.

    Allen Caron
    VW based 53MGTD - "MoneyPenny"
    "If one thing matters, everything matters" - from the book The Shack

    #267236
    Paul Mossberg
    Keymaster

    @pmossberg

    Allen…

    You wrote that you’d be bolting the shoulder belt “… inside of pillar just above the door hinge….”

    If that means you’d be attaching it to fiberglass, you’d probably be wasting your time. In the event of an accident, the forces would rip that bolt right out of the fiberglass, even with a giant fender washer behind it.

    I’ve read that even bolting through the stamped steel of a VW floor pan does not provide enough strength.

    Paul Mossberg
    Former Owner of a 1981 Classic Roadsters Ltd. Duchess (VW)
    2005 Intermeccanica Roadster

    If you own a TDr and are not in the Registry, please go to https://tdreplica.com/forums/topic/mg-td-replica-registry/ and register (you need to copy and paste the link)

    #267237
    scubasteve
    Participant

    @scubasteve

    Thanks for everyone’s input.
    I too, have been thinking of ways to add shoulder straps. Never could come up with a workable solution.
    But after reading through all this, I’ve changed my mind. I’m keeping the lap belts like they are.
    To be morbidly honest, I’m not sure if shoulder straps would be of any added safety in event of a wreck. Sort of like helmets for motorcycle riders; good for some situations, useless in others…

    Amor Conquista Todo

    #267238
    John Simion
    Participant

    @johnsimion

    I rode bikes in FL and MO for many years, and IMHO anyone who would ride a motorcycle without a helmet should have his head examined. I can’t think of any motorcycle accident in which I would prefer my head to be unprotected. If you’re in a motorcycle accident, by definition you are down, and if you are down, at some point your head will strike something. I don’t care what that something is, or how fast or slow I am going. No matter what, I would rather have the helmet strike that something than my unprotected head, thank you very much.johnsimion2016-02-10 12:07:26

    #267239
    Rich Kallenberger
    Participant

    @kall

    I installed a set of three point belts from a vw van I picked up at a vw swap meet. I was able to mount the retractor inside the top of the wheelwell and bolt it directly to a frame member. The belt then goes up into the rear cockpit through a narrow slot and passes through a metal retainer bolted to the upper outside corner of the seat back. This makes everything as close to a modern three point system as I could get. I can’ t send a picture now because I am away for a few weeks. The retractor mechanism is a bit exposed to the weather but in my dry climate that is not a problem. It works well but I don’t plan to do a crash test.Kall2016-02-10 12:10:10

    #267240
    Paul Mossberg
    Keymaster

    @pmossberg

    Not trying to be morbid, just realistic.

    I see issues with Kall’s set up.
    “The belt goes up into the rear cockpit through a narrow slot….”

    With the forces involved in a real world accident, that “narrow slot” in the fiberglass is going to act like a knife, weakening (and potentially cutting through) the seatbelt web.

    “…and passes through a metal retainer bolted to the upper outside corner of the seat back.”
    I see an even bigger issue here. The retainer is likely bolted to plywood inside the seat back. That is definitely going to tear loose. And when that happens, you are going to be in the situation that Kent described above. There will be nothing keeping the shoulder belt where it needs to be.

    PMOSSBERG2016-02-10 14:14:11

    Paul Mossberg
    Former Owner of a 1981 Classic Roadsters Ltd. Duchess (VW)
    2005 Intermeccanica Roadster

    If you own a TDr and are not in the Registry, please go to https://tdreplica.com/forums/topic/mg-td-replica-registry/ and register (you need to copy and paste the link)

    #267241
    KentT
    Participant

    @kentt

    While on the subject of belts, these are the type of mounting reinforcements recommended, instead of the commonly provided big fender washers, if you are bolting belts to sheet metal, like the bottom of a VW floorplan. These spread the force over a large enough area that they won’t pull through the sheet metal.

    If you are bolting into the thicker metal of the center tunnel or the shaped rear body mounting flange, a big fender washer MAY suffice….

    Seatbelt AnchorKentT2016-02-10 16:46:24

    Early FF TDr on 69 VW pan
    Slowly coming back from the ashes...

    #267242
    newkitman
    Participant

    @newkitman

    I decided to just stay with the lap belts. I’ll bolt the belt to the original chassis/pan locations. Besides, my lap belts have the MG logo on the buckle.

    newkitman2016-02-10 15:52:06

    Allen Caron
    VW based 53MGTD - "MoneyPenny"
    "If one thing matters, everything matters" - from the book The Shack

    #267243
    Paul Mossberg
    Keymaster

    @pmossberg

    Kent – that link did not resolve properly. Would you check it?.

    Paul Mossberg
    Former Owner of a 1981 Classic Roadsters Ltd. Duchess (VW)
    2005 Intermeccanica Roadster

    If you own a TDr and are not in the Registry, please go to https://tdreplica.com/forums/topic/mg-td-replica-registry/ and register (you need to copy and paste the link)

    #267244
    KentT
    Participant

    @kentt

    PMOSSBERG wrote:
    Kent – that link did not resolve properly. Would you check it?.

    Sorry! I edited it to correct it with a direct link to Amazon – then tested it.

    The earlier link had gone through Google search so Summit Racing. These are available from a variety of places, including eBay.

    Early FF TDr on 69 VW pan
    Slowly coming back from the ashes...

    #267245
    billnparts
    Participant

    @billnparts

    The only proper way to do a shoulder strap…

    Just saying…

    Bill Ascheman
    Fiberfab Ford
    Modified 5.0, 5sp., 4:11
    Autocross & Hillclimb
    "Drive Happy"

    #267246
    KentT
    Participant

    @kentt

    billnparts wrote:
    The only proper way to do a shoulder strap…

    Just saying…

    Yep. A horizontal harness bar. I’ve talked to a local cage fabricator about making me a single hoop rollbar with a harness bar and two diagonal rear braces down to the frame horns. The harness bar will have to be a horizontal hoop, to clear the back of the seats.

    I use a pair of 4-point Crow harnesses on my Yamaha Rhino that I use around the property, mounted to a harness bar. They work well for serious trail riding, but are so restrictive I don’t use them around the house most of the time. I may want to try some of the new retracting Corbeau 4-points in the TDr… They reportedly let you move around more. They could mount to a mounting point on the diagonal braces – if those braces are close centered behind the seats, but they are not. Haven’t made it to that point yet!
    KentT2016-02-10 20:07:09

    Early FF TDr on 69 VW pan
    Slowly coming back from the ashes...

    #267247
    secretagentcat
    Participant

    @secretagentcat

    Who remembers when moms arm was the airbag?

    #267248
    Bob
    Participant

    @lrh

    Yes, and no car seats for kids.

    The good outweighs the bad but I have sympathy for parents needing to go through all the trouble of dealing with those things. Just saw a repeat of a news story I had seen before about little kids wearing winter coats causing a possibility to slip out because of the changes in tightness.

    Wish it never happened but my first car accident, first year with a drivers license too, a woman ran into the station wagon (family car) and her young boy was in the front seat of their small car without a seat belt and his face hit the dash. Nothing an arm could have stopped from happening even though it was only about a 20 MPH hit.
    I’m never without a seat belt.
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