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Ive spent a small fortune on all the upgrades and lipos etc. Yeasterday, I ran the new 2 11.1 V lipos, seacraft90esc and 8XL ferago with a CF48 prop. Idled it out about 20 feet from shore and squeesed the trigger just a little bit. The boat didnt go. I thought Id lost a prop.
Out came the fishing rod with float and retreived the sv27. The collect had let go of the flexshaft and the shaft was half out of the boat. Lucky it didnt go to davey jones locker.
After tightening it up, time for trial 2. This thing is to quick. I dont have a GPS but the grin on my kids faces dosent need one. Just keeping it on the water is fun. Never got to half throttle and its far quicker than on 7 cells nimh.
After about 2 minutes it stopped about 50 from from the shore. Here we go again.
This time the retreval took about 25 minutes as baitcashing reel had a overrun with the boys playing with it.
Pulled it in and the whole flexshaft had gone, along with a brand new CF48 prop and tapered prop nut.
The resulting hole was letting water in but not to the extent I expected.
The boat was pressureised because I always tape the hatch with Magic Tape. consequently only about 2 cups of water found its way in before the cabin pressure stopped any more. Not enough to flood the new lipos (over the heatshrink) or flood the motor. Lucky, as this hoby is expensive in Australia. Not having the tape would mean the the boat would have to be recovered from fully sunk/ filled
Anyway just thought Id share the experience of taping the hatch thoroughly.
I have a spare shaft but am dubious about the Kinteic racing Collet after letting go twice. It did have a bit of greese in it as a result of pushing the flex shaft through the second time although I tightened it with spanners. My only thought is that it wasnt in the collet enough as I had moved the dog drive slightly to allow for the larger prop on the shaft and allowing a 5mm gap between the strut and dog drive. Maybe this is the cause of it letting go as the shaft has to go along way through for the teeth to grip.
Ill give it another go and see how it holds.
Cheers
Out came the fishing rod with float and retreived the sv27. The collect had let go of the flexshaft and the shaft was half out of the boat. Lucky it didnt go to davey jones locker.
After tightening it up, time for trial 2. This thing is to quick. I dont have a GPS but the grin on my kids faces dosent need one. Just keeping it on the water is fun. Never got to half throttle and its far quicker than on 7 cells nimh.
After about 2 minutes it stopped about 50 from from the shore. Here we go again.
This time the retreval took about 25 minutes as baitcashing reel had a overrun with the boys playing with it.
Pulled it in and the whole flexshaft had gone, along with a brand new CF48 prop and tapered prop nut.
The resulting hole was letting water in but not to the extent I expected. The boat was pressureised because I always tape the hatch with Magic Tape. consequently only about 2 cups of water found its way in before the cabin pressure stopped any more. Not enough to flood the new lipos (over the heatshrink) or flood the motor. Lucky, as this hoby is expensive in Australia. Not having the tape would mean the the boat would have to be recovered from fully sunk/ filled
Anyway just thought Id share the experience of taping the hatch thoroughly.
I have a spare shaft but am dubious about the Kinteic racing Collet after letting go twice. It did have a bit of greese in it as a result of pushing the flex shaft through the second time although I tightened it with spanners. My only thought is that it wasnt in the collet enough as I had moved the dog drive slightly to allow for the larger prop on the shaft and allowing a 5mm gap between the strut and dog drive. Maybe this is the cause of it letting go as the shaft has to go along way through for the teeth to grip.
Ill give it another go and see how it holds.
Cheers
It is true.....it seems the only sure fire way to keep the water totally out is tape the hatch up. Usually with my sport running I don't use tape.....but I have A LOT of sealant on my hatch lip. Still doesn't keep all the water out. I do know that it will stay on top, and upside down for at least 2 hours.....
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