DonegalDave
Cadet
- Joined
- Aug 22, 2015
- Messages
- 14
I have a 1969 Chrysler 9.9 that has a 5" extension making it a long shaft version. I have just bought another 5" leg extension with the idea of extending everything else.
It is for a boat that i have just built. I dont want to cut the transom down and if I did i would only get 2" anyway. As it is the cavitation plate is just below the waterline. In forward it digs in and that is fine. However, if i move forward in the boat, it lifts the engine too far up and the water pump sucks air.
By extending the leg another 5" the gearbox will be just above the keel, therefore safe from damage and the prop will sit where it can get max water. (The transom narrows to the keel)
I can extend the water tube with a flexible pipe. I am sure I can extend the gear shift either by making a new lower piece or inserting a section.
However, the drive shaft is the problem. It obviously takes the power and has to be up to the job. Can a piece on stainless rod be welded in successfully?
I have several ideas on how it could be done, but has this been done before??
Thanks in advance,
David
It is for a boat that i have just built. I dont want to cut the transom down and if I did i would only get 2" anyway. As it is the cavitation plate is just below the waterline. In forward it digs in and that is fine. However, if i move forward in the boat, it lifts the engine too far up and the water pump sucks air.
By extending the leg another 5" the gearbox will be just above the keel, therefore safe from damage and the prop will sit where it can get max water. (The transom narrows to the keel)
I can extend the water tube with a flexible pipe. I am sure I can extend the gear shift either by making a new lower piece or inserting a section.
However, the drive shaft is the problem. It obviously takes the power and has to be up to the job. Can a piece on stainless rod be welded in successfully?
I have several ideas on how it could be done, but has this been done before??
Thanks in advance,
David