Originally Posted by Limey Linda
Could you post details of your self righting system. Want to build one. I assume it is co2 powered
Well, it is CO2 powered. The bag is about 9' x 2' I would guess. I suspect the clallenge in building one will be in finding the approriate valve for the bottle...
Here's a few pics:
1) The trigger is connected to a wire lanyard that feeds to the transom. It's strapped down to reduce the odds of snagging it. The sign is to remind me that of I ever use the bag, the boat will become a pretty good sail... I suppose the only thing worse than having an over-turned RIB 20 miles offshore... is having your no-longer-overturned RIB blowing away from you fasted than you can swim!
2) The valve and gas connection to the bag. The bag is just bundled on a platform
3) These flaps hold the bag in place. I'm not sure what the thread is through the grommets. It looks like black fishing line. It needs to be weak enough to break under pressure...
4) The bottle is well supported below the frame. You need to match the volume of gas to the volume the bag holds... it's little use if it's over-inflated and bursts... The bottle is similar to a SCUBA tank, but the opening in the valve is pretty big... 1/2" perhaps... so that it will "pass wind" quickly!
The bag takes 7 seconds to deploy.... and it's important that there is nothing sharp in it's way as it inflates. My antennae and stern light are all on rachet mounts that will give way. The radar reflector would be pushed out of it's mounting bracket...
Is there anything else I can show you?
One of the Canadian Coast Guard websites shows a self-righting system on a Hurricane 733 being used. I haven't been able to track it down, but I'll keep looking...