Props Blowing Out - Drive Height? (Pachanga 22)
#11
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Are you sure your not over trimming? What do you have to determine you trim angle? If you were running a 23 before gear change, a 24 or 26 bravo one should do the job if nothing else was changed.
#12
something else is wrong. That is a heavy boat but with the prop that deep - NO WAY - is the prop blowing out. I ran a Bravo to the mid 80's without a nose cone and never had any blowout. With the drive ratio change your not spinning the prop as fast as you were before. On your boat that should not change anything except engine RPM. Something is slipping and it isn't the prop.
#13
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I had a problem with my prop blowing out very bad. It turned out it was from a halo style drive shower which has the water pick ups on both sides. One side was pushing water and the other side was sucking air down to the prop when rotating. Switched to a single pick up drive shower and problem was solved. Also make sure the pick up is located on the same side as the direction of which the prop is turning. Hope this makes sense. Jeff Wurl
#14
Jwurl - was it blowing out at speed or just getting on plane. He is saying it is blowing out at speed. I wouldn't think that anything mounted behind and above the prop would have any effect at 4000 RPM.
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The drive is a '98 with low water pickups only. I do have a drive shower, it's an Eddie Marine style with a single pickup on the LH of the drive (opposite direction of prop rotation).
It's possible that I'm over trimming, at least with the Rev 4. The Bravo runs fine, just too much slip to get back to the 70s. I have been thinking about a Hydro P5X.
It's possible that I'm over trimming, at least with the Rev 4. The Bravo runs fine, just too much slip to get back to the 70s. I have been thinking about a Hydro P5X.
#18
I am running a 4 blade BRAVO at 1 inch above the lowest point of the hull and I am not blowing out at speed. He is probably over trimming because the prop is so deep. Is the bow of your boat bouncing up and down just before it blows out?
#20
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Did you have this drive shower on the drive with the 1:36 gears ? If so, you you absolutely positive the pick up is in same exact position ?