Finally Powered to my liking!

A forum for discussion of how to rig and tune your boat or kicker to achieve the best sailing performance.

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mallardjusted
Engineer
Posts: 174
Joined: Fri Oct 21, 2005 7:33 pm
Sailboat: MacGregor 26X
Location: Puget Sound, 2001 MACX4169K001 "Aqua Dawg", 70hp Yamaha

Finally Powered to my liking!

Post by mallardjusted » Sun May 04, 2014 11:41 pm

I bought my 26X in 2006. Unfortunately, not long after I bought it I started having knee problems. I took the mast off the boat and stored it in my back yard. After 4 knee surgeries, two of which were knee replacements, the mast will stay in the back, and my boat has become a "Power Cruiser" instead of a Power sailor.

Two things that I didn't care for was the 1) trailer: cheap, low weight capacity, painted steel trailer, and 2) the top end power performance of the 50 horse outboard.

First up I bought a new trailer about 3 years ago. It's a Venture aluminum, dual axle trailer with waterproof LED lights. It has a 5900+ lb capacity, and tows the boat fabulously. A real nice upgrade!

Since then I have been gathering data and saving pennies to upgrade the 2000 Suzuki 50 outboard. The outboard itself always ran fine, but I was looking for some more muscle-power. After gathering and analying specifications and user reviews through many different sources, I recently purchased a Yamaha 70 outboard. It weighs only 257lbs (vs 238 for the Suzie 50, 320 for an e-tech 70, and 341 for a Suzie 70), and has a physical profile similar to the 50.

I had it installed at the dealer, and we still need to make one more prop change to get near the top-end normal of @ 6000 rpm (specs are 5300-6300 rpm top range, and the dealer likes to get them near the 6000 mark). Even so, I maxed out at 22 mph the other day. With the Suzie 50, 17 mph was tops. Man, does it get going! I really like the fact it swings a little bigger prop and gives me better steering control at docking speeds, too. Anyway, I'll try to get pics somewhere down the road .....

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mastreb
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Re: Finally Powered to my liking!

Post by mastreb » Mon May 05, 2014 12:33 am

Congrats!

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fouz
First Officer
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Joined: Mon May 03, 2010 7:09 pm
Sailboat: MacGregor 26X
Location: Mobile AL. 2000X, T50 yamaha.

Re: Finally Powered to my liking!

Post by fouz » Mon May 05, 2014 6:17 am

Thanks for the report on the Yamaha 70. I have been wondering about its performance on a :macx: for awhile now.

Was that speed heavy loaded? No ballast?

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mallardjusted
Engineer
Posts: 174
Joined: Fri Oct 21, 2005 7:33 pm
Sailboat: MacGregor 26X
Location: Puget Sound, 2001 MACX4169K001 "Aqua Dawg", 70hp Yamaha

Re: Finally Powered to my liking!

Post by mallardjusted » Mon May 05, 2014 10:07 am

Was that speed heavy loaded? No ballast?
That was light to medium loaded, 2 large adults, and no ballast. It kooks like I will get 5 to 6 mph better top end in the long run. With my Suzie I would cruise without ballast at 13-14 mph, topping at 17. It's nice having the higher top end speed option, and cruising at 16-18 makes it seem like I'm actually on plane! The light weight and smaller profile of the 70 were key factors in my decision.

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DaveB
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Location: Cape Coral, Florida,1997 Mac. X, 2013 Merc.50hp Big Foot, sold 9/10/15

Re: Finally Powered to my liking!

Post by DaveB » Mon May 05, 2014 6:07 pm

I think you got it. I couldn't find a dealer to put on anything over the Manifactures 50hp.
So I put on a 50hp Merc. Bigfoot. I have a very heavy boat and max out at 17-18 mph and boat wants 16 mph at cruise.
I wanted the Suzuki 90 .
Looks like the 70 will do well on your MacX and they just came out with it at the time I got the Merc.50
Enjoy the ride.
I enjoy 8mph cruise but at times would love 16mph but not at burning fuel.
Dave

mallardjusted wrote:
Was that speed heavy loaded? No ballast?
That was light to medium loaded, 2 large adults, and no ballast. It kooks like I will get 5 to 6 mph better top end in the long run. With my Suzie I would cruise without ballast at 13-14 mph, topping at 17. It's nice having the higher top end speed option, and cruising at 16-18 makes it seem like I'm actually on plane! The light weight and smaller profile of the 70 were key factors in my decision.

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dlandersson
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Location: Chicago metro, USA

Re: Finally Powered to my liking!

Post by dlandersson » Mon May 05, 2014 7:37 pm

I actualy like 6 knots - just below hull speed. Seems to cover water well and fairly economical. 8)
DaveB wrote:I think you got it. I couldn't find a dealer to put on anything over the Manifactures 50hp.
So I put on a 50hp Merc. Bigfoot. I have a very heavy boat and max out at 17-18 mph and boat wants 16 mph at cruise.
I wanted the Suzuki 90 .
Looks like the 70 will do well on your MacX and they just came out with it at the time I got the Merc.50
Enjoy the ride.
I enjoy 8mph cruise but at times would love 16mph but not at burning fuel.
Dave

mallardjusted wrote:
Was that speed heavy loaded? No ballast?
That was light to medium loaded, 2 large adults, and no ballast. It kooks like I will get 5 to 6 mph better top end in the long run. With my Suzie I would cruise without ballast at 13-14 mph, topping at 17. It's nice having the higher top end speed option, and cruising at 16-18 makes it seem like I'm actually on plane! The light weight and smaller profile of the 70 were key factors in my decision.

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Whipsyjac
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Sailboat: MacGregor 26X
Location: White Rock, B.C. 96 26X Hull#486 96Merc ELPT 50HP 4 Stroke

Re: Finally Powered to my liking!

Post by Whipsyjac » Fri Jun 13, 2014 1:19 am

How about an update with your final prop selection etc? There's a lot of interest in that motor due to it's light weight.

Thanks,

Willy

Boblee
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Re: Finally Powered to my liking!

Post by Boblee » Fri Jun 13, 2014 2:47 am

Is that Yammy a 2 stroke and if so how do they compare for economy to the Etecs?

SENCMac26x
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Re: Finally Powered to my liking!

Post by SENCMac26x » Fri Jun 13, 2014 8:26 am

This was a good read, I'm actually get a Yamaha F70LA for my 2002x next week. If you don't mind my asking, what prop did you end up deciding works best?

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mrron_tx
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Location: Dauntless located in Grapeland Texas

Re: Finally Powered to my liking!

Post by mrron_tx » Fri Jun 13, 2014 3:54 pm

Just a note about the Suzuki 70hp. I have the DF70A model and have given up on finding a SS prop for it . Either the pitch is way off or the spine is wrong.... Mine is a fifteen spline....the one boats.not sent was a thirteen. That is My only gripe about My motor . Ron.

Boblee
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Re: Finally Powered to my liking!

Post by Boblee » Fri Jun 13, 2014 7:15 pm

We never use SS props, I work on the theory that I would rather break the prop than the gearbox or something else and almost every year our two props need fixing for one reason or another, logs and rocks or even the ladder left down can be pretty hard on props.
With the power thruster back on at least the ladder won't be a problem but skimming high unmarked rocks etc is still there.

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mallardjusted
Engineer
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Joined: Fri Oct 21, 2005 7:33 pm
Sailboat: MacGregor 26X
Location: Puget Sound, 2001 MACX4169K001 "Aqua Dawg", 70hp Yamaha

Re: Finally Powered to my liking!

Post by mallardjusted » Fri Jun 13, 2014 7:40 pm

Is that Yammy a 2 stroke and if so how do they compare for economy to the Etecs?
It is a four-stroke, the same footprint as their 50 and 60 hp outboards.

I do have the new prop, but have been extremely busy and haven't had it back in the water. I'll look on the box and/or prop to get the numbers on it .......

Boblee
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Re: Finally Powered to my liking!

Post by Boblee » Sat Jun 14, 2014 1:36 am

If I had plans to keep the boat I would probably try to put one of them on with their weight and extra power when needed they should be perfect and being a 4 stroke should be just as or better economical especially at the lower speeds.
You shouldn't have a problem finding props over there but here it is a real problem even if we can find one over there they may not want send them or it costs a fortune in postage.

SENCMac26x
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Re: Finally Powered to my liking!

Post by SENCMac26x » Thu Jul 03, 2014 9:07 am

I hate to be a pain, but I'm getting my new Yamaha 70 soon and would love to know what prop worked for you

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mallardjusted
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Posts: 174
Joined: Fri Oct 21, 2005 7:33 pm
Sailboat: MacGregor 26X
Location: Puget Sound, 2001 MACX4169K001 "Aqua Dawg", 70hp Yamaha

Re: Finally Powered to my liking!

Post by mallardjusted » Tue Jul 15, 2014 12:07 am

SENCMac25 .... I hate to be a pain, but I'm getting my new Yamaha 70 soon and would love to know what prop worked for you
Sorry ..... The Michigan aluminum 101036 (14" x 11P) was ok, but on the higher end (6200-6300) for rpm. The Michigan 10132 (13 1/2" x 15P) is what I have to try now ....... I just need to get it in the water!!!!!! I'm hoping to max out at about 5800 rpm ....

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