Can't keep the bow up - Moderated Discussion Areas

  ContinuousWave
  Whaler
  Moderated Discussion Areas
  ContinuousWave: Whaler Performance
  Can't keep the bow up

search | FAQ | profile | register | author help

Author Topic:   Can't keep the bow up

Ben posted 07-16-2001 09:22 PM ET (US)
Just got back from a great sun set on Lake St. Clair with the 13ft. Here is the problem. When the lake is calm I cannot get the bow up. I am the only one in the boat. Here is the problem.
The boat is an early 60's and the engine is a short shaft 1984 30 hp. There are 5 positions for the manual tilt pin. I have it in position 4 - motor away from the boat to drive the back down and bow up. If I put it into position 5 the prop cavitates way too much - even in position 4 the motor cavitates in calm conditions and the bow plows through the water. Position 1 -3 is way too much bow in the water action. How do I get the bow up?
Could a different pitch prop help? Is it becuase the older 60's motors were much heavier than my 1984? Were the short shaft engines of the 60's the same length as the 80's? Looking for ideas.
Thanks
Ben
Peter posted 07-17-2001 07:44 AM ET (US)
A stainless steel prop would help reduce cavitation.
Bigshot posted 07-17-2001 10:29 AM ET (US)
60's engines believe it or not were lighter. The lenght is the same and #4 should be the setting. How heavy is the hull(any water in it)? !3's want to run like the bow is going to stuff. You have to remember the boat is only 8 inches off the watr. It is not going to run like a v-hull.
counterstrike posted 07-17-2001 10:24 PM ET (US)
After market tilt N trim ,
or buy an Engine with TnT
Mullet posted 07-19-2001 02:45 PM ET (US)
Ben, I just repowered a 1968 13' with a Merc 40 hp 2 stroke. It is set on #4 with no problems. I read the suggestion that you get tilt and trim but I coudn't find a 15" shaft motor where that was an option. I do have battery under the side console and 2 6 gallon gas tanks under rear seat. May try moving a little weight back. It will sit a little tail heavy when still but runs nice. Just my .02
Bigshot posted 07-19-2001 03:00 PM ET (US)
On #4 it will porpoise with weight moved back. Try it but I think your setup is good.

Hop to:

Contact Us | RETURN to ContinuousWave Top Page

Powered by: Ultimate Bulletin Board, Freeware Version 2000
Purchase our Licensed Version- which adds many more features!
© Infopop Corporation (formerly Madrona Park, Inc.), 1998 - 2000.

Author	Topic: Can't keep the bow up
Ben	posted 07-16-2001 09:22 PM ET (US) Just got back from a great sun set on Lake St. Clair with the 13ft. Here is the problem. When the lake is calm I cannot get the bow up. I am the only one in the boat. Here is the problem. The boat is an early 60's and the engine is a short shaft 1984 30 hp. There are 5 positions for the manual tilt pin. I have it in position 4 - motor away from the boat to drive the back down and bow up. If I put it into position 5 the prop cavitates way too much - even in position 4 the motor cavitates in calm conditions and the bow plows through the water. Position 1 -3 is way too much bow in the water action. How do I get the bow up? Could a different pitch prop help? Is it becuase the older 60's motors were much heavier than my 1984? Were the short shaft engines of the 60's the same length as the 80's? Looking for ideas. Thanks Ben
Peter	posted 07-17-2001 07:44 AM ET (US) A stainless steel prop would help reduce cavitation.
Bigshot	posted 07-17-2001 10:29 AM ET (US) 60's engines believe it or not were lighter. The lenght is the same and #4 should be the setting. How heavy is the hull(any water in it)? !3's want to run like the bow is going to stuff. You have to remember the boat is only 8 inches off the watr. It is not going to run like a v-hull.
counterstrike	posted 07-17-2001 10:24 PM ET (US) After market tilt N trim , or buy an Engine with TnT
Mullet	posted 07-19-2001 02:45 PM ET (US) Ben, I just repowered a 1968 13' with a Merc 40 hp 2 stroke. It is set on #4 with no problems. I read the suggestion that you get tilt and trim but I coudn't find a 15" shaft motor where that was an option. I do have battery under the side console and 2 6 gallon gas tanks under rear seat. May try moving a little weight back. It will sit a little tail heavy when still but runs nice. Just my .02
Bigshot	posted 07-19-2001 03:00 PM ET (US) On #4 it will porpoise with weight moved back. Try it but I think your setup is good.