goinsfishin Posted May 8, 2011 Report Share Posted May 8, 2011 I have a 17ft bullet with a 78 140 model johnson on it. The prop i had on it was an aluminum 12 3/4 x 23 pitch on it. I now have 2 stainless props that i want to try out. One is a raker 13 1/2 x 22 pitch and the other one is a power tech that is 13 1/2 x 21 pitch. Do you guys know if this will work or not or if there is a better prop that i need to try? Link to comment Share on other sites More sharing options...
brwnbass Posted May 8, 2011 Report Share Posted May 8, 2011 What HP is the motor, my 17' bullet with a 150 has a 24 raker & its perfect for it. Link to comment Share on other sites More sharing options...
goinsfishin Posted May 8, 2011 Author Report Share Posted May 8, 2011 oops i'm goofy. i think faster than i type. its a 140 Link to comment Share on other sites More sharing options...
eastenfish Posted May 8, 2011 Report Share Posted May 8, 2011 I would think a 23 pitch is where you need to be. However, props are a funny business. Every prop is a little different and each and every boat reacts differently. Trial and error is the best. I finally after 2 years of trial and error have figured out exactly what I need. Link to comment Share on other sites More sharing options...
Jtewes Posted May 8, 2011 Report Share Posted May 8, 2011 Allen I would try the 22 raker. Check your RPM at wide open throttle and if you are where you need to be, that would be the prop for you. Of course this is assuming you are happy with the hole shot. As mentioned above, props can be tricky and sometimes it takes several tries to get where you want to be. But where you are now, I would think the 22 raker would be perfect for your set up. J Link to comment Share on other sites More sharing options...
Jamie De Vera Posted May 8, 2011 Report Share Posted May 8, 2011 i ran a 140 jonny rude on my old blue boat and i ran a 21 pitch.. it was an 18ft and it ran ok considering the motor sucked butt... i would run both props and take notes of rpms, speed, and what load was in the boat, and holeshot.. put the better of the 2 on the use the other as a spare.. Link to comment Share on other sites More sharing options...
goinsfishin Posted May 8, 2011 Author Report Share Posted May 8, 2011 with the 23 pitch that i have on there, i still have more rpms to go when i get to where it should going up. What is the reason for this. do i need to change my motor height or some thing. i have a super jack jack plate from knoxville propeller. I do not know anything about any of this so your all's help is greatly appreciated. Link to comment Share on other sites More sharing options...
eastenfish Posted May 8, 2011 Report Share Posted May 8, 2011 Yep might need to lower your jackplate to get more lift and give the prop more grab. This will slow your rpms. But you want your motor as high as you can get it and still maintain adequate water pressure. Link to comment Share on other sites More sharing options...
Jamie De Vera Posted May 9, 2011 Report Share Posted May 9, 2011 Yep might need to lower your jackplate to get more lift and give the prop more grab. This will slow your rpms. But you want your motor as high as you can get it and still maintain adequate water pressure. +1... do you have a manual or hydraulic jackplate?? Link to comment Share on other sites More sharing options...
goinsfishin Posted May 9, 2011 Author Report Share Posted May 9, 2011 +1... do you have a manual or hydraulic jackplate?? its a manual jack plate. I put the 22 pitch raker on it and tried it out today. I couldn't even go all the way to Wide open throttle. I went about 39 top speed but that was at 3/4 throttle with the motor trimmed up a little. I was running about 42 before and that was the wide open with a little bit of trim. Link to comment Share on other sites More sharing options...
eastenfish Posted May 9, 2011 Report Share Posted May 9, 2011 its a manual jack plate. I put the 22 pitch raker on it and tried it out today. I couldn't even go all the way to Wide open throttle. I went about 39 top speed but that was at 3/4 throttle with the motor trimmed up a little. I was running about 42 before and that was the wide open with a little bit of trim. I would say you should lower your jack plate about 1/4 to 1/2 in or so. It should work good then with the 23. Link to comment Share on other sites More sharing options...
StratosRocket Posted May 9, 2011 Report Share Posted May 9, 2011 I would try all of them. The main thing is water pressure and rpms when you are raiseing or lowerimg a moter, you dont want to over rev or run a low water psi. Im with Jamie, write down the rpms and gps speed not gauge speed of all props. Just because your turning more rpms with one prop doesnt mean you are actually going faster(prop slip). It is hard sometimes to find a prop that works good for holeshot and topend speed. But Im going to guess and say the raker will be the best. Link to comment Share on other sites More sharing options...
Jamie De Vera Posted May 9, 2011 Report Share Posted May 9, 2011 yeah you'll have to experiment with the jackplate height with the props but make sure you measure the height and keep log!! it may take a while to get it dialed in.. Link to comment Share on other sites More sharing options...
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