juggalo wrote:im very interested in this luhr speed indicator although $50.00 seems like alot of money just to know my speed.
I think mine was $39.95 at the White Elephant in the valley. At idle, my 8hp kicker moves our boat at about .9mph. I consider the Luhr Speed an essential piece of trolling equipment on our boat and use GPS as a back up.
Seems like you should be able to run at idle and hardly move a 14' boat with your 2.5hp. You will not be able to run as slow as an electric trolling motor though, so what you're seeing may indeed be the difference between the two motors.
Oh yeah, if you need to have the motor checked out, stop in and see Rick Henderson at Elephant Boys. Tell him Phil from Spangle sent you and he'll take good care of you.
Hey Phil. If you have GPS speed and I assume temp on your F.F. What is the need or purpose for the Luhr Speed Indicator?. Do both speed indicators read the same at all times? If not, which do you trust?
For comparison with your and Hewesfisher's slowest trolling speed. I am running a 9.9 two stroke for a kicker on my 17ft Lund fish and ski. My boat is a much lighter boat than Hewesfisher's Hewescraft. And a tad bit heavier than the juggalos 14ft boat. My boat and main motor should weight 1200lbs, add 300lbs for gear and trolling motor. My slowest trolling speed is also .8-1.0mph. My F.F. screen will not shows speed until a minimum of 1.5mph is reached. So my trolling speed is a guesstimate. But pretty accurate. if anything I can troll a tad slower than that. I must twist the throttle more than a little to reach 1.5mph. In fact I almost double my slowest trolling speed to achieve 1.5mph of boat speed. My max speed with the 9.9 hp is 8.0mph.
3mph is pretty darn fast when trolling. 2.5 - 3.5mph is what we do for Coho Salmon here on the West side. The average person walks at 3.0 and that is not a casual walk unless extremely long legged.
Okay, just thought of a rudimentary, McGiver method to determine your approximate trolling speed. Some one check my math. Check this out. 3mph (your guessed trolling speed) x 5,280ft (1 mile) = 15,840ft of boat travel at 3mph. Divided by 60 minutes in a hour X 60sec in a minute = 3600sec. Stay with me here. 3600sec divided into 15,840ft = 4.4ft of travel every 1sec. multiplied by 3 = 13.2ft. 14ft is the length of your boat. So, the closest multiplier to the length of your boat.
Okay, your boat is 14ft long ( I think you said 14ft). Then at trolling speed, if you were to walk to the front of the boat and drop a marshmallow or ball of power bait (biodegradable floating item) in the water at the front of the boat in a 3 count (1-one-thousand......2-one-thousand.......3-one-thousand) that mallow or powerbait will travel 13.2ft. Your 14ft boat would not pass the floating object by 8" (rounded up). Or use your watch to count off the 3sec.
If trolling speed is 2mph. In 3sec the floating object will travel 2.9ft. x 3 = 9ft. Let's call it 5sec = 14.5ft of boat travel.
If trolling speed is 1mph. It would take 1 x 5,280 =5,280 divided by 3600 = 1.45ft per sec x 10sec = 14.5ft traveled.
1mph = 14.5ft of boat travel in 10sec.
2mph = 14.5ft of boat travel in 5sec.
3mph = 13.2ft of boat travel in 3sec.
4mph = 14.65ft of boat travel in 2.5sec (added this equation in case your really flying..LOL!!)
Drop the floating item, in the water at the bow of the boat when at minimum trolling speed. Use your watch to determine how many seconds it takes for that object to reach the back of your 14ft boat. Pick the speed that is closest to how many seconds it takes.
This email took a little work. So, do report back if it worked or not? I think I will try it on my boat next time I am out and the water is calm. On a breezy day this would not be as accurate. After all, this is a McGiver-ism! And does seem fairly simple. Definitely less than 50.00 for the entire test. Try the test 3 times for accuracy. I think that to be a Mythbuster standard! LOL!!
This test is for MPH ..............Not..............KNOTS.