Poor-man’s harness? The CG Lock

20 04 2010

OK, I came across these via one of the Eunos forums.  I’m never going to fit a harness as I’ve not yet taken it on a track, and you look like a dick when you can’t reach the stereo controls without unclipping yourself.

I find myself bracing my knees against the transmission tunnel and the door cards when driving spiritedly – door handle digs into my knee and I’m generally spending effort keeping myself in the seat etc.

Anyway, I came across a reference to CG Locks.  A CG (Centre of Gravity) Lock is a simple mechanical device that you attach to the tang end of your seatbelt, and use to cinch the lapbelt tight across your lap when you’re going quickly.  This holds you in the seat, and leaves the top, shoulder part of the belt to move as normal.

They get decent reviews from advanced driving instructors etc – hmm, interesting…


Basically, you bolt the device to the handle of the seatbelt tang – the bit that is attached to the seatbelt that you click into the retainer.  It doesn’t mark and it’s completely removable by unscrewing two allen bolts.  Takes about 5 minutes to fit, and in essence it consists of a mechanical spring-loaded roller that locks the lap and shoulder parts of the belt together so you can tighten the lapbelt – and it stays tight, holding you in the seat.

When you sit in the car, you pull across the seatbelt as normal, and with your left hand’s index finger press the spring-loaded lever on the mechanism to allow the belt to move normally and freely.  Push seatbelt in until it clicks as normal, then pull the upper strap going across your shoulder to tighten the lap belt.  Push down in your seat if you want a really snug fit.  Release the spring loaded lever, and you’re locked down.

Excuse the quality: cameraphone in the dark. I do all my mods in the dark, usually whilst drunk

So, what’s it like?

PRO: holds you really tightly in position.  All the subconscious bracing against the car that you do as you corner just…goes away.  Safer, better control, less effort.  All round it’s pretty damn good.  You can snug yourself in pretty tightly and whilst it’s not a harness, it’s proved excellent for a bit of back road thrashing (I can still hear the tink-tink-tink of my exhaust and brakes cooling down outside!).

CON: anyone who gets into your car will think “What the hell is this?” and have to ask you to explain that you need to press the lever on the CG Lock to allow the belt to fit them.

Overall: I like it.  I like it quite a lot.  They retail at about £50 but seem to be pretty commonplace on eBay for half that.  I can’t really see a downside – recommended.




One response

21 04 2010

The best bit of kit you can put on your car.. And the saved lives proves it makes the seatbelt safer. Should be on all cars as lightly tightened makes you sit better, reducing my backache to zero…

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