I have been trying to get a little more performance out of my jon boat. It has a 1981 Evinrude 35hp and the boat is a heavy 16ft 1972 polarcraft. I added a big casting deck out of plywood, bow trolling motor, storage compartments up front for tackle. the Troller is 24v system and i don't have...
Interesting comments.
When i had the motor raised up as high as i could (cav plate about 1.5" above the bottom of the hull) i could only turn about 5200 rpm and i lost a little speed (24.5 mph), hole shot seemed not as good but i wasn't blowing out from what i could tell.
I lowered it to about...
I think the best you can do with a 12v system is 55lb thrust, i don't know how big your boat is but if it's over 14 ft i would recommend a 24v system. I fish the Missississippi River and i have a 70lb on my 16 ft flat and it by no means is over sized. Wish i had an 80lb. if you were really...
I have tried it 1.5" above the bottom of the hull and I loose speed. I lowered it to about 0.75" above the hull and i'm getting about the same speed i got with out the trim kit, which is about 25 to 26mph with a 10.5x11 aluminum solas prop. I have a lot of weight in the front of my boat due to...
So i purchased and installed a CMC PT-35 on my 1972 Polarcraft jon boat. The motor is a 1981 Evinrude 35HP model # E35RC1G and I am struggling a bit with the engine height. The manual on the PT-35 says to mount motor with the cavitation plate 1" to 3" above the bottom of the hull. I mounted...
So i picked up a CMC pt35 for my 16ft jon boat, i have a 1981 35HP evinrude to go with it. I was eyeing up the fit last night and the first thing i notice is that i have a bunch of small bolts that go through my transom to 3 gussets in that brace from the transom to the bottom of the hull...
Someone asked for pics of my beat up prop, i chewed two of the blades up on a little gravel this spring at some point. I also attached two pics of the front deck build
Interesting....I ordered an aluminum 11x9" solas aluminum prop just try try it out. I think my speed is going go way down but i want to see what my rpm does. I will post back with my results.
Why experience tells you that? I have always heard 200 rpm per inch of pitch. In my experience with larger props (14x26) that the rule generally holds true, with some variation on cup and prop design.
I will try to get a pic of it tonight. I hate buying props without trying them, but i might order a 11x9 solas and see what that does.
I'm pretty confident my rpm measurement is correct, but just to confirm, i got one of those induction tachs where you wrap it around the spark plug wire...
Also, can you recommend a prop for my setup then? Was looking at the solas 11x9. I think i need a significant drop in pitch to get my rpm where it needs to be