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I think I need a different prop, one that has more bite. My 24 were slipping bad and the 26 is worst. The more pitch the more slip. If I have a prop that had better bite I might be down to a 22 and more lift. Tuning props is not my strong suit by any means.
If I did go back to 24 I should over rev at WOT but would come out of the hole better. |
According to my print out (bored 502), it shows the peak torque at 617ft lb at 3800 rpm. Compared to the stock 502 my torque is up also a bunch
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So you are needing cup added to your existing props since standard BIII's have no cup. If you were closer I'd throw my 25 XR's at you to try. Well, hand them over not throw! :flag:
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Originally Posted by Pliant
(Post 4344425)
Bottom paint can cost a boat as much as 10mph and more and you have a lot of hull and weight in the game there. I am sure more will chime in on this area If it drags at 50mph the drag will be greater at 35...read wetted surface area.
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Originally Posted by Knot 4 Me
(Post 4344902)
So you are needing cup added to your existing props since standard BIII's have no cup. If you were closer I'd throw my 25 XR's at you to try. Well, hand them over not throw! :flag:
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Originally Posted by I.D.C.E.
(Post 4343759)
AllDodge, since our talk I pulled the trigger to work at getting mine dialed in a little better. I have some news, but I am still in the testing stages. I spoke with Chad Hill in regards to his Signature 4 x 4 wheels and decided to order a set. I bolted them on and put some hours on the boat this weekend, but the bay was snotty and couldn't get some WOT runs. I did get rid of the slip getting on plane, in fact its impressive getting on plane using the same pitch as i had with the Merc 4x3s. I also can get into aggressive turns like I use to with my B2 before the repower. The boats overall behavior was drastically improved also. I was running in a 3' chop and it let me be able to trim on top and stay steady without porpoising issues. I am working with Chad of what is the next step. He offers an exchange service in which I send these back and either tune them or send me another pair to get really dialed in. I almost feel with his wheels I can go up to 26 pitch which should give me a boost in speed and get me right where I want to be with still improving how it pushes on plane compared to the 4x3s I was running for a while.
I can keep you posted, but I would really consider this an option. Tell him Tom from Formula Owners of New Jersey directed you his way too. Check out the full resto of It Don't Come Easy here..... http://www.formulaboatsforum.com/VBF...y-Formula-26PC |
Originally Posted by Knot 4 Me
(Post 4344902)
So you are needing cup added to your existing props since standard BIII's have no cup. If you were closer I'd throw my 25 XR's at you to try. Well, hand them over not throw! :flag:
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Then chase the tail so to speak, i am sure BB blades would be more than capable of adding some cup along with some tweaking that would increase bite so to speak, keep one thing in mind you have a lot of blade in the water already 100 more Hp and increased torque and without a weight change your mph has stayed the same...Now if you were running 1000 hp on a 8000lb boat yes you probably could power thru almost any drag that is a fact.
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AD, have you verified the new mill is running on all 8 cylinders? Very hard to tell a miss with wet exhaust. I had a plug wire come off once and they only way I could tell something was wrong is that I was down RPM at WOT. That would mess with your slip numbers in the calculator.
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Had the computer on it during final onboard tune, had oxygen sensors installed so it one wasn't firing it should have showed up.
Edit: sent bblades and email last night for there thoughts |
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