Guests - If You want access to member only forums on HSO. You will gain access only when you Sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
Johnsonator

F 75 Trolling Speed.

16 posts in this topic

I just bought a new Fishhawk 1750 tiller with a Yamaha 75 fourstroke. My question is will it troll down slow enough to backtroll effectivly? I know that fourstrokes don't troll down as well as two strokes but I think the posatives of the fourstroke out wieght the negatives. The rig has a transom electric motor but I would much rather use the main motor. Also does anyone have a 1750 fishawk with comparable horsepower, I am wondering how fast I can expect it to go. Can't wait to get it on the water. Any input appreciated. Thanks Johnsonator

Share this post


Link to post
Share on other sites

On calm days I use the electric to backtroll. My 75 four stroke tiller is too fast.

If you don't have splash guards, I'd look into getting some.

Share this post


Link to post
Share on other sites

The boat does have wave wackers on it, that was the first thing I wanted. I don't know about the trolling problem staying on line. I guess I will find out. Hope I will like it. Do you guys recommend a drift sock to slow down the motor or what? Thanks

Share this post


Link to post
Share on other sites

Johnsonator,

The drift-sock is great if you're trying to live-bait rig and fish rather verticle, e.g. Lindy/Roach Rig.

You'll need to experiment with trimming your 75 up to slow your speed for backtrolling (I hope we're on the same page here with backtrolling). What I mean is that you can slow the boat down by trimming the motor up so that it pushes less water, thus slowing the boat down.

I use my 90hp Merc (two-stroke) for windy backtrolling conditions (2-4ft. rollers), otherwise I have a 75lb. Minnkota Riptide with the powerhead reversed for all other backtrolling purposes (I have a ProV 1800).

Do you have a rear trolling motor too?

------------------
Chells

Share this post


Link to post
Share on other sites

I'm wondering if a drift sock would not only slow you down, but control the front end from sliding around.

If your live well is up front, fill it up and put a little extra wieght up front.

It's a great boat, you'll love it.

Share this post


Link to post
Share on other sites

Johnsonator,

I bought the EXACT same rig May of last year. With the factory prop, in a properly trimmed boat, with one person, and half a tank of gas, I easily/consistently hit 37/38 mph at 3800rpm's. With a stainless steel prop (highly recommended), and the same parameters as above, I consistently hit 41/42 mph at 3400rpm's. (I did experiment with a stainless prop with less pitch, and I did hit 44mph, but I didn't like the overall handling.) With the stainless you get slightly more speed at far less exertion. And your hole shot, trim-out, and cornering are exponentially improved.
After 30 or 40 hours of use I troll all the way down to approx 2mph-according to my Lowrance X97. My minimum trolling speed dropped all summer, but I don't expect it to go much lower. Whether I trolled or backtrolled, I went slow/fast enough to consistently catch fish (walleyes included) in water as cold as 41 degrees. Congrats on a great multipurpose purchase.

Share this post


Link to post
Share on other sites

When backtrolling with my big motor, sometimes my bow doesn't want to move when I want to turn sharp.

On windy days i think all boats have this problem. What I do is turn on the electric transom motor and gun it in the opposite direction and you can turn around on a dime.

Hey Chief,

I was told that a four stroke 75 hp motor should run wide open at between 5500 and 6000 rpms. Is this wrong?

Since you went to a stainless prop, did it effect your trolling speed? I was considering a stainless for my rig, but was afraid it would speed up my trolling.

What pitch is it? I run an aluminum 15 pitch now.


[This message has been edited by skindog (edited 01-14-2004).]

[This message has been edited by skindog (edited 01-14-2004).]

Share this post


Link to post
Share on other sites

Johnsonator,

P.S. Your rig's low-cut stance makes for a fabulous casting platform, but it is a bit close to the water. Splash guards are a must. I'm delighted with my WhiteCaps, but Wave Wackers are good, too, and I see they've made the newest mounting hardware less ergonomically annoying.

Personally I don't notice trolling/tracking deficiencies in my boat, as compared to my old Alumacraft and Fisher. Opinions always vary.

Share this post


Link to post
Share on other sites

It has a minn kota electric motor on the rear with the motor reversed also. I like electric motors but they just don't cut it on the rough days.

Share this post


Link to post
Share on other sites

Hey Chief,
Why does a stainless prop. go faster. I have a lund 1800 w/75 mariner and can hit only about 30 mph. How much difference do you think a stainless prop. would make?
Thanks.

Share this post


Link to post
Share on other sites

Chief, Thanks for the info. I am sure I will love the boat. I am going to look into a stainless prop as soon as the open water hits. I really liked the boat for its multispecies fishing design. I liked the high platform and the low design. thanks

Share this post


Link to post
Share on other sites

Skindog,

It is 6000rpm max for the Yamaha 75 4stroke! My mistake. I was running at 58/5900 rpm's and 37/38mph with the factory aluminum prop, and was at 41/42 mph and 55/5600 rpm's with the stainless steel prop. I 'spose my SS prop could make me troll faster than usual, but I've got other things to obsess about.

My motor came with a 13x19 pitch, my stainless is a 13x17 pitch. I was very well advised by the folks at Formula Propeller to go to a smaller pitch. As a rule of thumb, the smaller the pitch (i.e. the more the blades bend toward the prop hub)the greater the water "grab". This gives you quicker starts, and better cornering. The greater the pitch (i.e. the more the blades bend away from the hub)the greater the top end speed.

Stainless props offer performance improvement for one simple reason: they do not deform at high rpm's. Standard aluminum props deform at high rpm's due to centrifugal
force and water resistance. As they deform, they "grab" less water, and as a result they move less water. Stainless steel, being much harder than aluminum, doesn't deform, and, therefore, moves more water. BUT, BE CAREFUL,a prop with a too small pitch can over rev and blow your engine. Also, SS props are not forgiving when they hit objects. They transfer all that energy and stress to your shaft and lower unit--resulting in expensive repairs.

Share this post


Link to post
Share on other sites

If it is anything like my brother-in-laws 1750 fishhawk you can't troll in it at all. I believe his is a 2000, they didn't have much of a center keel and the boat would not turn on a trolling pass and a slight perpendicular breeze would slide the boat across the water like it was sitting on ice. Hope they got that resolved. Other than the fact it can't troll, I like the boat, layout, etc.

Share this post


Link to post
Share on other sites

I agree with everything Chief said in his post right above this one, except maybe for the part about aluminum props deforming at high RPMs. Stainless is stronger than aluminum so stainless props can be made more radical in the size, shapes, bends, and pitches in the blades. Aluminum is just too soft and too weak to hold together in the same sizes, shapes, bends, etc. as stainless steel. The advantage to aluminum is it's cheaper, and when you hit rocks only the prop will break, but you can't get as good of performance. The advantage to stainless steel is you can get more radical props that improve performance, but it's more expensive, and if you run a stainless prop into the rocks you'll probably be replacing the gears in your lower unit (they'll break before the prop will). I run a 23 pitch Hi-Five stainless prop on my boat and it's amazing what it does for the handling.

Share this post


Link to post
Share on other sites

Hey Chief, what kind of ss/prop do you have on your F75. I am looking at getting one.

Share this post


Link to post
Share on other sites

Johnsonator,

My SS prop is a "Turbo". Bought it at Formula Propeller in Brooklyn Park, Mn. I paid $325.00.

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • I was out last night on a local lake and was surprised to see the water temp down to 57.  Caught a couple cookie cutter fish, but not the big ones I was looking for. Fished a lot of weeds in the 6-9ft range, but not a lot going on there. The biggest one was still shallow in some reeds, so not sure if we are still in the spawn/post spawn stage.     Whats everyone else seeing out there for a bite and fishing conditions. Big weekend coming up, Good luck!! 
    • Maxine_Partain, Welcome to the forum.  There seem to be a lot of folks from Canada joining up in the last half a year which is nice. The sad thing is they all seem to make about 3 posts on the same day they joined and then they never come back which is sad. Hopefully you will keep posting.
    •   Hazel Hain, Welcome to the forum.  There seem to be a lot of folks from Canada joining up in the last half a year which is nice. The sad thing is they all seem to make about 3 posts on the same day they joined and then they never come back which is sad. Hopefully you will keep posting.
    • hi and welcome to HSO. I think you mean double hung not double pane. if you have moisture between the panes you have a seal failure. depending on the brand you might be able to just replace the glass. If you have lots of rot you may need to do a complete replacement. Best to have a window person pop by and check out the situation. 
    • Some times it's just nice getting out of town and when your with the right people a wet weekend can still be fun. This weekend should be better!
    • Cool story! 
    • Reb's old girlfriend might have had a diaphragm, but you would find that one in the lower unit - not in the carburetor...
    • Most of the homeowner's expense comes from heating and cooling inside a home. Double pane windows have gasses like argon or krypton filled to displace the air between the panels. But the problem is when this leaks from the window panes and settles down at the bottom. 1) The main problem that would arise is condensation. The moisture level goes high thus causing mold, mildew and rotting wood sills. 2) If the gas leaks, the window will not provide better insulation. 3) The windows start to make squeaky sounds thus it is hard to close and open. 4) It also affects the stripping to loose. I live here in Canada. In our house, we have double pane windows in almost all the rooms. Now I could see that some of the windows to be in a foggy condition. Will it be due to the gas in the window panes? Should I need to replace the windows? I have heard that casement windows.are good compared to double pane windows. I would like to know the benefits of casement windows. Will it cut down my utility bills? Please do share your thoughts and valuable suggestions. Thanks for the time.
    • We spent last weekend in the camper, holed up hiding from the rain. Not the worst thing ever, but a hike would've been nice. Hopefully we'll have better weather over Memorial Day. It looks good now so I'm excited. 
    • I am in a confusion on which one to choose. I have anyways decided to separate the bath area from the toilet. Which one would be better? I don't have enough area in the bathroom. One of my friends said that when it comes to energy efficiency and water conservation, a quick shower virtually always beats a bath. Is it true??   Although it is good for relaxing and ideal for bathing small children, I think it will be difficult for older people and people with injuries to get in and out. When it comes to the case of water heaters also I think it will be difficult to fill the tub. I think all these issues can be sorted out using a shower. Showers always need only less water. But if there is any leak, it will be difficult to fix.   I personally prefer bathtubs. Although it has many disadvantages compared to showers, the relaxation and freshness we get after bathing in a tube are very different. What is your opinion? Based on your opinion, I want to fix my decision and approach a plumbing company for installing it. Feel free to share your thoughts.
  • Our Sponsors