Old School, I have an osprey set up for endurance racing. I used a 4060 TP motor and it is mounted as far back as I could get so as to still be able to get the the collet. If I did it again I would probably move it forward an inch or so. As far as weight goes, it makes no difference. I run 3-4kg of batteries and it doesn't make any difference to the speed. The CG however is a little more critical. I have found that at 30% the boat is faster and rides free but is easily upset by waves and other wakes, so will quickly stuff in. No problem on flat water for flat out runs. The CG seems to work best in rough water at 32% where even 4" of chop does not bother it at all. I also run with standards batts for oval sprints and find that a CG of 32% is much more stable in race water. BTW I lifted the stinger height by 3mm or so also.
NZMPBA 2013, 2016 Open Electric Champion. NZMPBA 2016 P Offshore Champion.
2016 SUHA Q Sport Hydro Hi Points Champion.
BOPMPBC Open Mono, Open Electric Champion.
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