I have yet to get my new-to-me rig in the water, thanks to this weather. I was wondering what kind of speed to expect. It's an 18hp Johnson on a 14' Mirrocraft aluminum (rowboat) hull.
Can some of you guys please post your boat/motor sizes and what speeds you can achieve? This should provide interesting power/weight data. Thanks.
One of my rigs is a 12' Sears Gamefisher (fiberglass) with a 6 hp Evinrude. I've clocked it at 10 mph with a GPS.
My other rig is a 16' aluminum fishing boat (read - nothing fancy ) with a 40 hp Evinrude. I've clocked that one at about 29 mph with a GPS also. I just recently bought a couple of different props for it though. Gonna try them out soon and see if they make much difference in overall top speed.
My big boat 32ft. with twin 350c.i. chevys 270hp. each with 200gallon of fuel and 10 people aboard(way to many people) on flat water did 22mph. My little boat 14ft. (basicly a car toper) has a 35hp Johnson and does 35m.p.h. on flat water on the GPS.
My 17'6' Starcraft Suprfisher (deep vee) with a Merc 90 does just about 40 with two people and a LOT of tackle and a full tank (26 gal). I put on a jackplate over the winter and have to go to a prop with a bit more pitch, darn thing will run over redline now, running in the cleaner water and with less lower unit drag. I'm anticipating about 7% more top end.
18 ft alum. deep vee with a 125hp Merc. Top speed of 44.1 Gps on flat water. I'm not quite to the redline with a 21" prop, might try a 19" for an additional 250 rpm to bring up to 5250rpm. Might add a couple of Mph.
I have a starcraft 1600 starcaster semi-v. It has a 40 horse mercery classic. The lowrance fishfinder says that i am doing 43 mph. That is with one person.
Mgv, I think your speedo is off. My buddy has a 40 on his 17ft and can only go 27mph max via GPS. Only accurate way is by GPS. My dash speedo is off by at least 5mph from the GPS.
Thanks Walleyemike. I think you are correct. I have always been amazed what mine goes compared to everyone else. I will hae to get a GPS and give it a try.
So the question of how fast should my boat go is 9.7mph - 21.8mph. I'm guessing it will be towards the high end of that range.
Worm Dunker, I left your big rig out because the hull design and engine configuration is a lot different than the other boats. But sure would be nice to have such a fine craft!
Very interesting kroppe, please update us with the results. Maybe we should give the prop pitch data and see how that plays in. That's the one that makes me crazy.
I have a 19 1/2 ft Smokercraft , deep v , with a 75 hp. Merc . Fully loaded , 27 gal and a 9.9 kicker + 3 batteries and gear , it does about 35 mph . My Lawance and GPS are only 1-2 mph different . GPS is higher .
It's just a simple factor I am using to estimate the speed of my boat. I don't have a speedo or GPS so I have to guesstimate. Here is the calculation:
horsepower / boat length x "A" = speed
I used the data the guys gave me to come up with an average "A", then used the equation above to estimate my boat's speed, which is unknown. I fully realize my estimate is not exact, not linear, etc. etc. but it is a place to start from.
I took my boat out today for the first time, and I would say it definitely runs faster than 20mph. I would venture to guess close to 25mph. I will have to borrow a GPS to find out for sure.
Add me to the MaTRiX!!!
I have a '02 Starcraft SeaFarer 16 Deep V (16'2" X 67") w/25 HP ELH tiller - 2 Batteries , Trolling motor , etc. , with 1 'normal' person & my Fad@$$ I get about 25MPH on either my Lowrance X70A's Speedo OR My Eagle AccuNav Sport GPS +/_ a few tenths either way!!!
18-20 MHP with 3 or 4 persons aboard --
You should get about 17-20 MPH , my guess.. I trust my GPS!!!!!!
Robert
It's a step up from my ole 14' semivee & 4HP Evinrude!!!!!!!!!!!!!
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Related Threads
?
?
?
?
?
Ask a question
Ask a question
Michigan Sportsman Forum
8.8M posts
94.9K members
Since 2000
A forum community dedicated to hunting and fishing enthusiasts in the Michigan area. Come join the discussion about safety, gear, tackle, tips, tricks, optics, hunting, gunsmithing, reviews, reports, accessories, classifieds, and more!