: Build Log
Canterbury J #551
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Oct 12, 2012
, 12:38 PM
Joined Apr 2007
I've got the envious problem (i suppose) of having #551 come out a bit light. With a small 4.8V battery pack the boat weighed around 13lbs8oz. Minimum all up weight per the class rules is 14lbs5oz.
My first step was to switch over to a big 7.2V 4200 nimh battery pack. This fits nicely in the keel sump as low as possible in the boat. Had to switch out the rudder servo to a Hitec 5087 high voltage servo to match the 7950 I'm using for the sails. Nice thing is I think I can sail the boat non-stop all day (and then some) with this battery.
Also added 3.2oz of lead shot in a small zip-bag in the keel sump.
Ed Crowell was nice enough to let me borrow his super-sensitive, super accurate check-out scale, which reads 14.32lbs. (converts to 14lbs5.12oz).
My slightly less accurate (and less sensitive) postal scale reads 14lbs5.5oz.
I think that's close enough!!! Thanks again to Ed Crowell for all his help and support!!!
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Stand weighs 3.83 lbs
Boat (with 7.2 batt, 3.2oz of lead shot and stand) weighs 18.15lbs. Total minus stand is 14.32 lbs.
Bag of shot and 7.2 volt battery.
Weight of boat on my postal scale 14lbs5.5oz (with weight of stand cleared by using "tare" feature....Ed's scale doesn't seem do this, but his is far more sensitive and accurate)
Last edited by poltergeist; Oct 12, 2012 at