cep32 4 Posted December 14, 2018 Share Posted December 14, 2018 I've put a carbon prod on my old Javelin and am wondering whether I can get away without a bob-stay. The prod is the bottom section of a 49er mast which is 64mmOD and 3.5mm wall thickness. Does anyone have any experience with what sort of size the prod sections are when unstayed in the Javelin fleet (their Google Groups site doesn't seem to be used much)? Cheers, Chris Quote Link to post Share on other sites
Priscilla II 392 Posted December 14, 2018 Share Posted December 14, 2018 Good selection of photos on Facebook. Some do some don't. Some have longer protruding snouts than others so bob-stay not required https://www.facebook.com/JavelinSkiff/photos/ Quote Link to post Share on other sites
Jason128 6 Posted December 15, 2018 Share Posted December 15, 2018 I would guess you would be fine in the 49er mast section. Most of the 12 foot skiff prods that have a bob stay are a 38mm section, so a lot thinner than a mast section. You need to make sure where it meets the bow is strong enough, and possibly reinforce the mast section where it enters the sleeve in the boat. Remember it’s a big lever, so if say the prods a metre long, and the bit where it enters the boats is 100mm, it’s a 10:1 lever. Add a 200kg pull up from the tack of the kite and you are dealing with 2 tons at the boat Quote Link to post Share on other sites
cep32 4 Posted December 18, 2018 Author Share Posted December 18, 2018 Thanks for the feedback. I've been puzzling a bit over this and have decided that I'll fit a bob-stay and see how it goes. If I run it loose and it doesn't load up I'll remove it. Quote Link to post Share on other sites
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