Horse Power Question

[walleye800]

Anyone with a 17 to 18 foot Lund with a side console what horse power engine is on your boat?

Just wondering if 75HP is enough for the size so I thought I would ask for some help.


Thanks

 

[burgman]

Re: Horse Power Question

I have a new Lund Rebel 1725 with a 90 hp 2 stroke and with me the wife, dog and fishing gear I can get 45 out of it maybe 46. The motor is new and I didn?t want to hold down very long until I get it broke in. I?m running a 21 pitch prop but I go over red line a little. Might try a 23.

If it was me I would go with the biggest motor the boat will take or the most you can afford. Big motors are more fun and I have never heard anybody say they wished they had a smaller motor

 

[walleye800]

Re: Horse Power Question

The reason is I found a 96 1775 Pro V Dlx for sale with a 75hp. I just can't find out if that is enough horse power or not. Cannot afford to buy the boat then change engines. So I thought I would post here for comments.

 

[jbwe16]

Re: Horse Power Question

1725 rebel with dual console and a 75 Mercury 4-stroke here is some performance numbers.

Two full figured people.
Prop, Vengeance 48-16988, 18P (13? 18P )

Idle about 2.5 MPH forward
1.5 MPH reverse.
Takes over 3200 ? 3400 to keep boat on plane and about 17-18 MPH
4000 RPM is about 25 MPH
5000 RPM is just over 30 MPH
WOT is usually around 5600 + RPM and 38+ MPH
I did get 39 MPH and about 5700 RPM on hitting the trim perfit.

RPM was from the tech installed in the boat.
Speed from GPS (Boat speed was 7-10% high)

Elevation 560 feet

 

[DonHof]

Re: Horse Power Question

If it helps I have a 14.75 with a 30. With the wife, me, and the dog,(5lbs) full
tank of gas 6.6 gal. I can get 25 out of it. Has a little trouble coming up a plane. But once I get there I can run about 4,000 rpms at 15 mph.
Wish I could have put a 40 on it.

 

[Casey G]

Re: Horse Power Question

walleye800 the rule of thumb normally is to stay within 70% of the max hp for the boat. The best way is to take the boat for a ride, and bring a 300lb buddy along too. lol

 

[bonz_d]

Re: Horse Power Question

Look here!

http://www.iboats.com/Lund_Boats__1775_Pro_V__1996/bp/64b50559r0 http://www.iboats.com/Lund_Boats__Pro_V__1996/bp/34br1260s10531y

 

[Catman16]

Re: Horse Power Question

I have a 2000 1775 ProV w/ a 2000 Yamaha F100. Owned it since late 1999. Performance wise, it has a top end of about 41mph w 1 person in boat. It depends on what you are trying to do with it. I use mine for fishing purposes and it is fine for me. My hull is rated for a 150hp max.

 

[snowman48047]

Re: Horse Power Question

That should put you around 35mph or so. That is my same size as my neighbors boat and he has a 75 Merc.

My 20' Alaskan side console is under powered. I let my dad talk me into a smaller engine (50hp) than I should have. Its rated for a 120hp. With that I can get 25mph with just me and my fishing stuff. Add a buddy and his junk and it'll drop to 22. I'm running a 14/11 prop and my mech said I should go 14/10 to increase the rpm a bit. It runs max about 5400-5600 and I should be about 6000. Now with all my duck hunting junk and a buddy or 2 it is heavy. I have about a ton of stuff and I'm just under max load capacity. My 5 is a bigfoot (larger gearcase) so it will still push all that weight without much problem. I'd say that boat would be fine. It won't win you any races but unless you want to run 25 miles to your fishing spot why be in a hurry? However, in hind sight I should have put the 115Merc on it when I bought it.

 

[Gopher]

Re: Horse Power Question

Trying to get back to the original question, I have an Alaskan 18 tiller with Johnson 40hp two-stroke. (boat rated for 60hp) I'm running the optional "high speed" prop in stainless and top out around 33mph at low weight and calm water. Two-up, camping gear and light wind/chop we typically cruise around 25 mph. The boat feels stable and smooth at speed.

 

[motorpsykler]

Re: Horse Power Question

I'd say that 75hp would be minimally acceptable. I had an F50 on my 17ft VFR (hull rated at 130hp). I got 30mph by myself with everything perfect, add a little wind or a passenger and that number dropped fast. I now have an F100, so far it tops out at 40mph and cruises loaded at 35mph without a problem. If you are using the boat on small lakes and don't have a lot of large buddies, 75hp would be adequate. If you have any big water aspirations at all, I would hold out for more hp.

 

[Navy Jr.]

Re: Horse Power Question

I agree with the 70% rule presented by Casey G. While you may not need high speed every day, it's nice to know you can get back to safe harbor ahead of an approaching storm. -Ken