fitting a coachroof winch

[greeny]

I fitted one on my oceanis 323 several years ago. Essentially the same boat as the 311. There's a plywood pad glassed in the roof to take the winch. You can't remove the inner headlining as its part of the inner moulding, at least it is on the 323. I drilled straight through from the top down into the heads compartment in the appropriate places and through bolted with stainless setscrews, Inside I used stainless "penny washers" and domed stainless nuts. There was no "crushing" apparent on tightening the screws up. It all seemed solid. I've been using it for mainly cruising chute halyard but also for kicker and main outhaul. Probably in use for over 10yrs now with no problems.
For the clutches to go with it I can't remember for sure but I've got a feeling that there is a metal plate glassed in the deck that I drilled into and tapped to take the screws. I'm on the boat tomorrow so I'll refresh my memory and let you know on here.
Mainsheet traveller I can't help you with, sorry.

 

[ithet]

Interesting
How did you get on removing and refitting the internal coach roof lining/ finishing
I too am considering retro fitting a winch and clutch fitting and a main sheet traveller to the coach roof of a Oceanis 311

My 331 was fitted with a mainsheet traveller by the PO. I have just modified it so am aware of its fitting, which is between the two existing mainsheet horse points using the existing u-bolt fixing points (and its SS backing pad) plus an extra bolt - they all fit within the moulded mounting points on my 331 which have little removable panels below. Isn't your 311 is similar? I raised the track 20mm on nylon66 pads to clear the sprayhood (which has to go under the track on a 331 to clear the hatch). The track is Barton size 2 beam track. If it had not been previously fitted (poorly) I probably would not have bothered.

The PO also added a number of extra clutches, again there are removable panels below on the 311.

 

[Chris R]

My 331 was fitted with a mainsheet traveller by the PO. I have just modified it so am aware of its fitting, which is between the two existing mainsheet horse points using the existing u-bolt fixing points (and its SS backing pad) plus an extra bolt - they all fit within the moulded mounting points on my 331 which have little removable panels below. Isn't your 311 is similar? I raised the track 20mm on nylon66 pads to clear the sprayhood (which has to go under the track on a 331 to clear the hatch). The track is Barton size 2 beam track. If it had not been previously fitted (poorly) I probably would not have bothered.

The PO also added a number of extra clutches, again there are removable panels below on the 311.

Sorry PO?
Yes the 311 has the main sheet fixed to the coach roof via 2 fixed points but I’m not sure if they are strong enough to hold a traveller
Also wanted to know how you exposed the underside of the roof since theres usually some kind of fabric lining
Do you have to destroy it and renew after completion

 

[ithet]

Sorry PO?
Yes the 311 has the main sheet fixed to the coach roof via 2 fixed points but I’m not sure if they are strong enough to hold a traveller
Also wanted to know how you exposed the underside of the roof since theres usually some kind of fabric lining
Do you have to destroy it and renew after completion

PO - previous owner.

On my 331 there are removable fabric panels under the winches/clutches. Under the mainsheet fittings there are fibreglass covers. The raised 'bridge' bases for the mainsheet horse are a very thick single layer moulding. The normal load on the traveller will be no more than via the original system but you need the track to cater for the lateral force of a crash gybe - the Barton track requires 2 sliding bolts and a through bolt at each end, these all fitted within my 'bridge' bases. I discussed the overall fitting with Barton technical rep when I was updating it.


The thinner bolt is through bolt securing the track end fittings, the other two are the sliding bolts on the beam. You can see the two little screw holes that secure the fibreglass covers.

 

[Neeves]

We had the same problem but the builder, and I was able to speak to him, had moulded a location for both coachroof winches into the moulding and had placed plywood pads for the, additional car tracks, with aluminium plate underneath. I was able to drill and tap into the aluminium plate, simple stuff.

I did not see the need for 2 winches, they are not cheap. and I simply located a turning block instead of one winch and we cross sheet.

It does not solve your problem as you still need to decide how you are going to secure the turning block - but turning blocks are cheaper than winches.

Jonathan

 

[greeny]

Deleted.