rebuilding a Dumas 1/8 hydro

[t_hedlund]

Mr Sport 40

The plans did call for the fuel tank to be up front , but i have been told by may to put the radio box up in front of the motor.So that is where i have put it. The boat was mostly done when i purchaced it. Here is the picture of it the day i got it. my gallery

But i have made a bunch of changes to her, i'll post some pictures in a couple week when i have the motor in her.

The motor should go as far forward as the cowl will allow right???

thanks again for everyone support.

 

[t_hedlund]

OK we are finally getting some where on this boat. Now i need to start figuring out the pipe length. I have done a little research into this , but I'm not sure what exactly my rotor timing is. I'm planning on using a rebuilt .67 CMD motor , but i have very little information on the motors. Is there a way to measure the motors timing.

Thanks

Tom

 

[Ron Saxvik]

Tom.....this is a bit off topic but was curious to know if you

were related to the Hedlund's that raced/built stock outboard

boats back in the 50's/60's era.

Just Curious,

Ron Saxvik

 

[t_hedlund]

no not that i'm aware of, i will look into it.

 

[mt. gay rum]

no not that i'm aware of, i will look into it.

my dumas circus circus with a cmb 67 pipe is at 11 3/4 running a AB pipe...hope this helps a great starting point....

 

[t_hedlund]

Thanks for the info, Would the owners manual cover the recommended pipe? Is the lenght of a 11 3/4 overal lenght of pipe or is that from center of plug to center of convergent?

Is the angle of the pipe to the header too extreme, should i try to bend the header? really this one points to my gallery