Nice goin Dooz. Time to getter wet:D.
Graupner Arrow conversion.
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Was hoping to do a quick sea trial before a day with mom, got up early to finish off, went to sand off the hobby putty I had put on for the stuffing tube filler ,and it turns out "sandable in 30 minutes" is a little off, in fact it was still goo after 15 hours, if you see this brand run from it!! (in pic) After lots of paper towels and some scrubbing got all that #$%@ off, and replaced with gel epoxy, still needs some more finish sanding, but the boat is real close now, aside from sharpening and balancing my first 3 blade lol.
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I got to see Doozies, Arrow run today, that thing has more power than I thought it would have, super fast! using a prather 215 prop he manged to take out a VICTORY 100 amp speed control, and only on 12 cells! Good job Dooze cant wait to see that thing run when its all dialed in!!!!
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First Run Away!!
Thanks Sean..
Well the first run with the 3 blade, lots of torque roll and lots of porposing! I was concerned the cog was a little forward, this is not going to be an issue. A few more slow passes and the jeti blew upfirst time thats ever happened to me! The next day was much more entertaining, propped down to a 215 and put in a 100 amp controller, same issues, torque roll and porposing, so I thought I would just cruise around a little at slower speeds, then it happened, with no warning boat went to full throttle and stuck there
round and round we went completly out of control, I finally got it into a tight circle with the rudder full over and made a plan with jeepers, there was a clump off weeds I thought I could hit, so pulled it out of the circle pattern and flew across the lake into the weeds/brush where it high centered about 8ft in!! still screaming btw, I waded out and retrieved it and disconnected the batts. The controller is fried again with a 215!!
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Hey Doozie, next run out try proping down to X435- X438 that might eliminate the torque roll and the less pith will unload that motor a bit, then maybe step up to a x637 I think this will help out alot. these props should take the amp draw down quit a bit. a 215 is some were between a x640 x642! :D You guys should here this arrow, the 800 just howls!Comment
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Sea Trial #2 attempt tomorrow..
I have replacement esc's in my hand! FE withdrawals shall soon be cured, moved the battery forward 3" and to the left (from stern) 1" also turned motor timing back to stock (i.e. 18) ,for a starting point. :rolleyes:Comment
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Was beginning to think the boat had some old german jinx on it until today, finally a couple of good runs, the pic is the battery layout at this point. Lots of tweeking still left to do, but made huge gains today.
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Took out another rchydro in about 15 feet, this time it surged briefly, then shorted wide open! AGAIN! this is turning out to be an entertaining feature on these, YeeHaw into the weeds at full throttle. the diode on the motor is blown in two pieces, Im putting this boat in the closet for a while.Comment
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