1987 22-2 Ospery re-power

[Bushleaguer]

Great.

I'm already getting that "geez, it's him again" looks from these people.  :ncool:

Back it  goes.  I think I'll use it like it is for the coming weekend though- I haven't fished since June 8th and I'm sure they won't be working on it over the weekend even if I dropped it off Friday.

[Capt Matt]

The guys who rigged your boat probably just dont rig many twins
Stay on them
Capt Matt

[Georgie]

Bush,

Not trying to backtrack at all but just looking for a bit more clarification on your particular rig because I'm still puzzled.  

Back in your opening post you wrote

I'm not interested in re-doing the transom (ie- closing it all the way in) and spending the money on a bracket or raising it 5" to go to 25" shaft motors.

I looked at the specs for the '87 222 and Aquasport says transom height is 25".     Doesn't that mean your old Evinrude 115 was already a longshaft?  That said, switching from single engine to twins usually means going from longshaft to shortshaft to compensate for hull deadrise as you move outboard from the keel.  Are your new Yammies longshaft?  If so, wouldn't trading the new engines out for the shortshaft version solve the entire problem?

If I missed this discussion/info earlier in the thread I apologize.

[Capt. Bob]

Bush,

Not trying to backtrack at all but just looking for a bit more clarification on your particular rig because I'm still puzzled.  

Back in your opening post you wrote

I'm not interested in re-doing the transom (ie- closing it all the way in) and spending the money on a bracket or raising it 5" to go to 25" shaft motors.

I looked at the specs for the '87 222 and Aquasport says transom height is 25".     Doesn't that mean your old Evinrude 115 was already a longshaft?  That said, switching from single engine to twins usually means going from longshaft to shortshaft to compensate for hull deadrise as you move outboard from the keel.  Are your new Yammies longshaft?  If so, wouldn't trading the new engines out for the shortshaft version solve the entire problem?

If I missed this discussion/info earlier in the thread I apologize.

Ryan,
Bush posted: "Props are 13-1/2 x 15.  I'm turning right at 6K at WOT.  20" shafts".

Still, they look long to me (what do I know) and thought the same thing when I saw the new pics of the motors raised to the lowest hole. but.......
F70 LA with the L =20".
So much for my eyes.

[gran398]

No manufacturer offers long shaft (25 inch) engines below 90 hp.

When we rebuilt Miss D, went to a 26 inch transom. We had  the opposite problem: Our engines were too short by 2 inches. And the transom bait boxes prohibited moving them out (apart)  on the transom...they would hit the boxes when keeled over.

So had to turn them from 20 to 25 inch with  Bay Manufacturing extension kits.

[Georgie]

Thanks guys...

I'm turning right at 6K at WOT. 20" shafts".

Yup...totally missed it.

Still, they look long to me

 
I agree. Must be some sort of optical illusion/perspective thing.  

No manufacturer offers long shaft (25 inch) engines below 90 hp.

And I totally know this   ....I must need more sleep.

...as you were, Gents.

[Bushleaguer]

I double checked the engines.  They are model F70-LA, which is 20" right in the specs.  The model number stamped right on the motors matches.  I'm confident these are the correct engines.

I spoke to the dealer today after leaving a couple messages.  They have me down to patch, re-drill and re-mount on 26" centers on September 16th after I get back from a salmon trip.  They were actually nicer than I expected, and admitted, just as Capt. Matt said, that they don't rig many twins and actually appreciate the learning experience.  

When they are re-mounted, I'm not expecting to go 40 knots or anything, but at least can be confident that I've done everything possible to get them right.

Incidentally, I've been running the snot out of them the way they are, and in a nutshell, they are a thing of beauty.  I absolutely love the maneuverability (I've never looked so good putting the boat in the slip- it's like an extension of your hand), and I love the features and quietness.  I especially like the ability to vary your RPM's up or down by 50 when trolling just by hitting a button on the gauges.  Talk about pinpoint speed control- WOW.

Any of you guys repowering these CC boats, I can't encourage you enough to go with twins if it's at all within your means.  I can't say enough about the confidence and security you feel out in big water knowing you always have a backup, the maneuverability, the ability to rotate engines trolling, and there isn't a better sound than those synched twins at cruising speed.....  8)

[gran398]

Awesome!

Let us know how the new positioning turns out

[Bushleaguer]

Got boat back from dealer on Saturday.  Props are now spaced at 26" apart.  Cav plates are still below the hull- the high side of the plates are just barely below the low side of the hull deadrise.  This is as close as I can get now without jack plates.

Performance did not improve.  Still get 29.9 knots.  Can't break 30 no matter how I trim the motors.

At this point, I'm just going to run her like she is.  After I get out of debt from this go-round, maybe I'll think about jack plates.

[Capt Matt]

Might be cheaper to raise the transom
Just a thought
Capt Matt

[gran398]

Might be cheaper to raise the transom
Just a thought
Capt Matt

That was my thinking too.

A higher transom is a plus ...especially with some weight aboard.

[slvrlng]

Raising the transom is what Jessie did on his 19-6 when he got the 140 Suzie. If I recall he laminated a solid piece of oak onto the outside of the transom and this worked really well until he got rid of it recently. I will see if I can find the thread with this in it. He and his father did this job I think in a couple of weekends.


EDIT:  I found it! This might be the easiest way to fix this height issue.

http://www.classicaquasport.com/phpbb3/ ... 270#p23270

[gran398]

Excellent find Lew

Nice job Jess

The dark brown portion is of course the oak. For our application each engine is now 13 inches outboard of center. The mounting holes for the twins should still drill through  original glass, with the added five inch height extension as an upper stop.

It may well be possible, based upon measurements, to add a five inch poured extension. Cut off the original top, chainsaw down several inches, put the side plywood stops on and pour....

Or...go with a cored  3/8ths inch aluminum or 1/4 inch stainless wrap, or a combination.

Point is, it is not a single engine transformation as Jesse dealt with. As the motors are outboard...the new and raised bolt holes should be very close to hitting original glass. No extra beef necessary. The upper extension becomes a stop to mount the twins.

All he needs is 1.5 inches up,  max.

Careful measurement will be the determinant.

[Bushleaguer]

Hmm.  When I talked to the guy at the dealer, he told me that the district rep from Yamaha was there to look at the setup.  He suggested the same- raise the transom.  

I'll give it some thought.  I would be comfortable taking a crack at this project myself, other than not having lift equipment to take the motors back off.  I guess I can see what they would charge to do the job and start there.

[fitz73222]

You're probably at the point of diminshed return over the investment. She is an original, probably carrying a little water weight plus she is bottom painted. Both of which contribute to slower top speed. Enjoy the boat as is and worry about the modifications if and when you consider rebuilding her. My $.02