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RL34 keel blade
Can anyone throw some light on my RL34 keel? The drop blade on "PETREL" is raised and lowered by an electric winch.While replacing the winch cable recently I found the blade travel down from fully up was only 450mm (might explain ordinary windward performance).On checking the specs on this site it seems the blade travel should be about 900mm based on the min and max draft figures of 760 and 1670mm. This is somewhat confused by the claim of a draft of 500 or 'just above knee height' in the introductory blurb. Anyway, after much checking and adjustment I have been able to achieve a travel down of 660mm from fully up. Any more than this and the load on the winch increases dramatically when raising the blade. I believe the reason for this may be that as the blade slides down the sternward inclined keel case,there is a tendency for the lowered blade to pivot forward and hence jam in the case. Any thoughts or useful information out there?
rob van elden20-Feb-2005    Edit    Delete 
Re: RL34 keel blade
Rob. Your keel was designed to go down the full depth of the plate case, it sits on two lugs at the top of the plate that land on the top of the ballast keel, it may be prevented from dropping right down by growth on the keel if your boat has been in the water for some time unused. otherwise I cant see any reason why it is hard to lift, if it will drop further under its own weight.
Rob Legg22-Feb-2005    Edit    Delete 
Re: RL34 keel blade
Rob, I have just sailed SV Roma from Mooloolaba to Melbourne and have found the keel when dropped "bangs" from side to side with the rolling of the boat. Could the blade be worn or maybe the lugs it's sits on when down have hard growth which stop a solid contact?
cheers
John Price12-Jan-2011    Edit    Delete 

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