Custom/Hybrid does anyone make a yamaha/seadoo coupler?

Joined
Aug 6, 2006
Likes
3
Location
Port Saint Lucie Florida
#1
Does anyone make a Yamaha to Seadoo pto coupler ? (figured I ask before trying to make something)



well my son went to his moms for xmas visitation this week and I decide to push his blaster project out side and start on my seadoo hx conversion for a yamaha 1200 I have to go pick up some wider aluminum then i have to make the bed plates so I can move the center line of the engine over 1/2" not a big deal but the seadoo doesn't have a intermediate bearing an coupler up front by the engine instead there is a pto on the shaft that runs though the gas tank t the rear bearing housingand not much room between pto and the Yamaha crank shaft (basically enough for yamaha coupler with NO ears as you can see in pictures) I know I can be the first one who liked a seadoo hx hull but prefer a yamaha engines , so I was wondering if anyone makes a coupler to thread on the yamaha crank with splines to fit the seadoo drive shaft?

my second option was to find a old yamaha 1100/1200 coupler an cut the ears off then bolt to the seadoo pto , it would look like :):):):) but should work and be the cheapest choice

my third option would be move the engine a little further back and re-thread the seadoo pto coupler to fit the yamaha shaft , this would probably look the best but be expensive since I would have to take it to a machine shop to have done ......... I am thinking buying some type of after market coupler would probably be cheaper



Ok whats ya'll thoughts on the coupler situation?

seadoo yamaha 1.jpg.jpeg seadoo yamaha 2.jpg.jpeg Seadoo yamaha3.jpg.jpeg
 

Vumad

Super Hero, with a cape!
Joined
Jun 21, 2007
Likes
2,570
Location
St. Pete, FL
#5
Does anyone make a Yamaha to Seadoo pto coupler ? (figured I ask before trying to make something)



well my son went to his moms for xmas visitation this week and I decide to push his blaster project out side and start on my seadoo hx conversion for a yamaha 1200 I have to go pick up some wider aluminum then i have to make the bed plates so I can move the center line of the engine over 1/2" not a big deal but the seadoo doesn't have a intermediate bearing an coupler up front by the engine instead there is a pto on the shaft that runs though the gas tank t the rear bearing housingand not much room between pto and the Yamaha crank shaft (basically enough for yamaha coupler with NO ears as you can see in pictures) I know I can be the first one who liked a seadoo hx hull but prefer a yamaha engines , so I was wondering if anyone makes a coupler to thread on the yamaha crank with splines to fit the seadoo drive shaft?

my second option was to find a old yamaha 1100/1200 coupler an cut the ears off then bolt to the seadoo pto , it would look like :):):):) but should work and be the cheapest choice

my third option would be move the engine a little further back and re-thread the seadoo pto coupler to fit the yamaha shaft , this would probably look the best but be expensive since I would have to take it to a machine shop to have done ......... I am thinking buying some type of after market coupler would probably be cheaper



Ok whats ya'll thoughts on the coupler situation?

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Please do a full write up on this build. The hx is an awesome boat and could be a badass surf boat in our chop if it just had some yamaha reliability and balls on the bottom.
 
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