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Dubuque chad



Joined: 06 Jul 2019
Posts: 43
City/Region: Dubuque
State or Province: IA
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: Laura J
PostPosted: Tue Oct 12, 2021 3:42 pm    Post subject: Trolling motor Reply with quote

Looking to put a trolling motor on a Cdory 25. Has bracket mounted already. 200 horse main. River boat that needs to work a current . Ideas?
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hardee



Joined: 30 Oct 2006
Posts: 12065
City/Region: Sequim
State or Province: WA
C-Dory Year: 2005
C-Dory Model: 22 Cruiser
Vessel Name: Sleepy-C
Photos: SleepyC
PostPosted: Tue Oct 12, 2021 4:22 pm    Post subject: Reply with quote

How much current are you talking about. Less than 4 knots, 3 to 6 knots, or 5 to 10 maybe?

That info would be pretty helpful.

Harvey
SleepyC Moon


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Dubuque chad



Joined: 06 Jul 2019
Posts: 43
City/Region: Dubuque
State or Province: IA
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: Laura J
PostPosted: Tue Oct 12, 2021 10:12 pm    Post subject: Reply with quote

When the water is being released at the dam in the spring I'd guess north of nine knots. Wind can play a big role as well. I have a Mercury. Would a 20 horse be too much?
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hardee



Joined: 30 Oct 2006
Posts: 12065
City/Region: Sequim
State or Province: WA
C-Dory Year: 2005
C-Dory Model: 22 Cruiser
Vessel Name: Sleepy-C
Photos: SleepyC
PostPosted: Wed Oct 13, 2021 12:33 am    Post subject: Reply with quote

I don't fish and don't have a 25, so I really can't say. There are plenty of 25 owners here, so I would hope some of them would chime in here with some good info for you. My guess is that somewhere between a 10 and 15 would do, and I would lean towards the 15.

Seems to me that spilling enough water to get a 10 knot current would be considered excessive and even dangerous.

Harvey
SleepyC Moon

5 knot tidal flow just coming in to our Sequim Bay
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colbysmith



Joined: 02 Oct 2011
Posts: 3520
City/Region: Madison
State or Province: WI
C-Dory Year: 2009
C-Dory Model: 25 Cruiser
Vessel Name: C-Traveler
Photos: C-Traveler and Midnight-Flyer
PostPosted: Wed Oct 13, 2021 7:49 am    Post subject: Reply with quote

The 9.9 on my 25 works well, and can push me up to about 5 or 6 mph. That is hull speed. I don't believe any reasonably sized "kicker" will push you much over hull speed. If you need to push above that, you should probably be running your main engine! Colby
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thataway



Joined: 02 Nov 2003
Posts: 19364
City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
PostPosted: Wed Oct 13, 2021 11:50 am    Post subject: Reply with quote

You what a "high thrust" outboard. 8 hp, 9,9 hp is plenty. The high thrust should have a larger and lower pitched prop, with a lower gear ration in the lower unit. These are often sold as sailboat kickers which acts as an auxiliary motor.

All you can expect is a speed in the 7 to maybe 8 statute miles per hour.

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Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
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Home port: Pensacola FL
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Dubuque chad



Joined: 06 Jul 2019
Posts: 43
City/Region: Dubuque
State or Province: IA
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: Laura J
PostPosted: Wed Oct 13, 2021 12:51 pm    Post subject: Flow Reply with quote

I looked it up, while the average knots for river flow is north of 1-like it is currently (no pun intended) the high flow in spring flooding can roil the water between 6-7. And yes....it can be challenging to hold a position in that. Smaller boats do it with ease. But that is the extreme not the norm. I'm happy to hear a 9.9 can handle it. Cheaper to buy and lighter on the back end. Thanks. You guys are always helpful.
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Dubuque chad



Joined: 06 Jul 2019
Posts: 43
City/Region: Dubuque
State or Province: IA
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: Laura J
PostPosted: Wed Oct 13, 2021 12:53 pm    Post subject: Flow Reply with quote

I looked it up, while the average knots for river flow is north of 1-like it is currently (no pun intended) the high flow in spring flooding can roil the water between 6-7. And yes....it can be challenging to hold a position in that. Smaller boats do it with ease. But that is the extreme not the norm. I'm happy to hear a 9.9 can handle it. Cheaper to buy and lighter on the back end. Thanks. You guys are always helpful.
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forrest



Joined: 02 Nov 2003
Posts: 347
City/Region: Chehalis
State or Province: WA
C-Dory Year: 2007
C-Dory Model: 26 Venture
Vessel Name: Long Story
Photos: Long Story
PostPosted: Wed Oct 13, 2021 9:20 pm    Post subject: Reply with quote

I have a 15 HP Honda kicker on a CC26 and maximum speed is 7.5 mph in flat water.
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