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Boating Talk For discussion of everything related to boats and motors |
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#1
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Prop Mods
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#2
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Pm montauk17. He can help you out.
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#3
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What kind of boat and motor,and how many rpm's does it turn at WOT? Stainless steel or aluminum prop?
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#4
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SS 3 blade prop on NS2200 bay Yam 200HPDI. Don't run WOT very often, but it's in the low 5k's.
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#5
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The WOT rpm has everything to do with overall performance and holeshot. Sounds like you need to go down in pitch to get the best performance. Every degree of pitch you go up or down you will loose/gain 200 rpm's.The HPDI should be at 5,500-5,800.The diameter of the prop also comes into play. On a bay boat you want a large diameter to carry the weight. Do you know what brand of prop that is? On a bay boat your best performing prop is either a yamaha saltwater series 2 or a mercury mirage plus,both 3 blade props.
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#6
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Thanks
Thanks Montauk. That is very helpful. I'm ashamed to say I'm not sure of the brand. I'll check it out when I get home. Just bought the boat used a month ago, and had to go out and mess it up. I guess I'll look at it as an opportunity to improve my performance. Luckily the guy I bought the boat from gave me the original (black) prop that came with the Yamaha. At least I have something to keep me in the water while I'm repairing or replacing my prop.
While we're at it, the prop is spinning smooth in neutral and the lower unit oil looks fine. Do I need to do anything else to make sure my lower unit isn't damaged? |
#7
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If the prop shaft is straight while spinning it and the lower unit oil has no shavings you are fine. Yamaha lower units can handle some serious abuse. I worked on a crew boat a while back that hit something and busted a hole by the bearing carrier. They ran it 15 miles back to the dock with no oil without it locking up.
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#8
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Thanks again. I'll let you know what I end up with.
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#9
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No problem,anytime.
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#10
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Quote:
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#11
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On a lightweight bay boat,yeah. Tempest was made for boats with a performance pad hull. On a heavier bay boat you can't beat the mirage. I have ran every prop on the market,and it's hard to beat.
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