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Harness Mounting Point
- Thread starter colesy
- Start date
Short of a harness bar or cage, rear struts are the "best" place.
There is an FIA document somewhere about rules & regs for harness placement. general idea is that they should be within 15 degrees (IIRC) of the horizontal but can have much more (30 degrees IIRC) of an angle when viewed top down. All intended to avoid "submarining."
EDIT: Assumed you were on about the shoulder belt mount. Again for lap belt mounts the FIA gives guidance and it's a similar thing, roughly vertical when the car is viewed side on. Ideally you want to be cutting two holes in your floor and using "high tensile" bolts with metal plates either side of the chassis floor to distribute the force in the event of an accident minimising the chance of failiure. A lot of people seem to use the standard seatbelt mounts (i.e. one on the side of the seat/subframe/whatever and the other being at the bottom of the B pillar) Whilst not ideal if it's good enough for road cars... (flawed logic?)
Would be very interested to know how many people do have their harnesses mounted correctly, especially with regards to the lap belts.
There is an FIA document somewhere about rules & regs for harness placement. general idea is that they should be within 15 degrees (IIRC) of the horizontal but can have much more (30 degrees IIRC) of an angle when viewed top down. All intended to avoid "submarining."
EDIT: Assumed you were on about the shoulder belt mount. Again for lap belt mounts the FIA gives guidance and it's a similar thing, roughly vertical when the car is viewed side on. Ideally you want to be cutting two holes in your floor and using "high tensile" bolts with metal plates either side of the chassis floor to distribute the force in the event of an accident minimising the chance of failiure. A lot of people seem to use the standard seatbelt mounts (i.e. one on the side of the seat/subframe/whatever and the other being at the bottom of the B pillar) Whilst not ideal if it's good enough for road cars... (flawed logic?)
Would be very interested to know how many people do have their harnesses mounted correctly, especially with regards to the lap belts.
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Hah, love the irony. So in asking where is the best place, you're decided to put them in one of the worst places
Not saying I'm a doctor who's seen loads of crushed spines from badly-installed harnesses, just passing on the info written by the proffesionals. Even if you do think FIA/MSA/whatever regs are "overkill" in anyway for "just" a few trackdays then 1) surely safety isn't the most sensible area to skimp on and 2) you can have just as bad a crash (decelleration/speed/injury wise) on your way to tesco or on a track day than if you were in high level motorsport.EDIT: With regards to the "proper" way of doing the lapbelts (hole in floor, steel backing plates & high tensile* bolts) I'm sure there are better/worse places on the Clio's floor to be drilling through/mounting stuff on.
*Who knows how high a tensile strength you actually need. No doubt all the "high tensile" stuff on ebay etc is produced to no standards at all or the lowest "grade" needed to pass a BS/DIN/etc standard.
Jekyll
ClioSport Club Member
http://www.cliosport.net/forum/showthread.php?557144-My-Black-Carbon-2118-d-thread/page16
Heres how I did mine. Ignore my rear as I have changed my rear harness onto the rear isofix mounts and clamped up the bar on top. Hope that helps
Heres how I did mine. Ignore my rear as I have changed my rear harness onto the rear isofix mounts and clamped up the bar on top. Hope that helps
colesy
ClioSport Club Member
172 182 197 E61 530D
http://www.cliosport.net/forum/showthread.php?557144-My-Black-Carbon-2118-d-thread/page16
Heres how I did mine. Ignore my rear as I have changed my rear harness onto the rear isofix mounts and clamped up the bar on top. Hope that helps
thank you much appreciated
Have a look through some of the project threads, plenty of people fitting harnesses in there.
I just drilled a hole in the floor and bolted the eye let to one of these - http://www.demon-tweeks.co.uk/motorsport/harness-eye-bolts-plates/willans-stress-plate.
I just drilled a hole in the floor and bolted the eye let to one of these - http://www.demon-tweeks.co.uk/motorsport/harness-eye-bolts-plates/willans-stress-plate.
colesy
ClioSport Club Member
172 182 197 E61 530D
Found the FIA drawing, but not the document xD Even has a drawing of how to use stress plates...
http://www.fia.com/resources/documents/497026785__P11_2007.pdf
If 10 degrees is ideal but max 45 then maybe isofix/rear-belt-buckle etc points are deemed ok. Dunno, get a tape measure and brush up on pythagoras?
http://www.fia.com/resources/documents/497026785__P11_2007.pdf
If 10 degrees is ideal but max 45 then maybe isofix/rear-belt-buckle etc points are deemed ok. Dunno, get a tape measure and brush up on pythagoras?
182cup & 172 racecar
From that link,I'm not sure about mounting the seatbelt to the seat.
