blackjack26ss prop breaks
11-01-2008 | 08:47 PM
#29
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From: louisville, KY
RE: blackjack26ss prop breaks
ha thats not it takes on alot and i mean alot of water radio and reciever loose connection on the bank before it even hits the water canopy is some what off set, well basiclly poor craftsmanship all together
11-01-2008 | 09:11 PM
#30
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From: Edmond, OK
RE: blackjack26ss prop breaks
yeah, I just cant figure out why it would take in so much water. I have the old blackjack (which is the identical hull) and it doesnt take in water at all unless it ends up belly up in the water. Any problems with the rudder and strut?
06-08-2009 | 02:34 PM
#32
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From: Cayce,
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RE: blackjack26ss prop breaks
Dear Blackjack owner,
I have found that prop breakage comes from over-tightening the prop to the drive dog and also the alignment of the flex shaft and spacing.
The flex shaft will expand when it is rotating, so you need to check spacing between the thrust washers on the propeller strut and the drive dog. I leave a 1/16th or 1/32nd gap just for that reason and the same for the flex shaft tube.
Try not to tighten the prop very tight against the drive dog.
This is what I do: Replace the broken prop and slide itup to the the drive dog.
start screwing on the propnut untilit is finger tight. use a wrench to hold the shaft still, then see if I can move the propjust alittle, not a lot of slop, just a little. This should be enough to allow prop flex.
I have the BJ that has the outdrive onthe stern and I kept breaking props and stern drives until I sat down and called Pro Boat about this and the tech told me what todo.
Tightening the prop against the drive dog likeyou might torc a bolt on a car engine is not the thing todo.
Just finger tight and maybe a 1/16th of a turn with a wrench is all you might need.
Works for me and I still have the plastic prop on mine.
I have found that prop breakage comes from over-tightening the prop to the drive dog and also the alignment of the flex shaft and spacing.
The flex shaft will expand when it is rotating, so you need to check spacing between the thrust washers on the propeller strut and the drive dog. I leave a 1/16th or 1/32nd gap just for that reason and the same for the flex shaft tube.
Try not to tighten the prop very tight against the drive dog.
This is what I do: Replace the broken prop and slide itup to the the drive dog.
start screwing on the propnut untilit is finger tight. use a wrench to hold the shaft still, then see if I can move the propjust alittle, not a lot of slop, just a little. This should be enough to allow prop flex.
I have the BJ that has the outdrive onthe stern and I kept breaking props and stern drives until I sat down and called Pro Boat about this and the tech told me what todo.
Tightening the prop against the drive dog likeyou might torc a bolt on a car engine is not the thing todo.
Just finger tight and maybe a 1/16th of a turn with a wrench is all you might need.
Works for me and I still have the plastic prop on mine.
06-08-2009 | 02:47 PM
#33
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From: Cayce,
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RE: blackjack26ss prop breaks
BJowner,
Mine gets water in it everytime I run her and it is coming from the flex shaft. It just draws water. I have even stuffed the flex drive tube with grease and then installed the shaft and it still draws water.
Even my 1/8th scale Zenoa Hydro draws water and I have to empty the boat before I run it again.
Check your water hoses for spilts or leaks. You may have to trim the ends of the hoses then use a1/16th of a inch of hose, like a donut, to place around the outside of the hose to make a better seal.
Chriscraft</p>
