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Originally Posted by offshoredrillin
(Post 3789699)
I keep mine sanded, i started with 60 then 80 then 120 and finally 220. I keep them shiney with a 3M scotchbrite red pad and wd40. being as i have really done nothing other than make them satin finish, other than looking good i couldnt tell ya. :)
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Originally Posted by scarab63
(Post 3791622)
5 mph net is pretty DARRn good for some elbow grease.....
What's the secret hex film called...? Interesting, most of us just keep adding HP Curious to see if any DIY'ers on this site have trued a lower unit themselves. |
Originally Posted by nova26
(Post 3791554)
What kind of boat?
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Originally Posted by 4bus
(Post 3791636)
http://www.proboat.com/blueprint-for-speed.html
Interesting, most of us just keep adding HP Curious to see if any DIY'ers on this site have trued a lower unit themselves. |
Its proprietary and called hex hyde. Its in testing phase on 2u boats right now. Results will be available soon
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no worries
Originally Posted by bwd
(Post 3791626)
Better put motor in before you bother sanding your lower. Just sayin. LOL
It'll b back together soon. Don't u worry bout me Mr...u know I like to stack my plate high. |
Having a true straight lower on a twin engine appllication is beneficial but i don't think this is the case on a single engine app.
Outboard drag racers have been sanding/profiling lower units for many, many years, and straight was not what they were after. Running a high x dim will result in increased speed but on a single it will try to prop walk. Prop walk will cause the driver to crab the lower to keep the boat in a straight line. Look at the skeg mounted torque tabs on the fastest of outboard drag boats and you wouldn't believe the curve. Drag boat skegs running right hand rotation props will have the stbd leading edge ground on back to mid skeg. On the port side, from mid skeg back to the trailing edge is ground on. This curved skeg is the fastest setup on a single engine. |
Originally Posted by Lauderdaleboats
(Post 3792528)
Having a true straight lower on a twin engine appllication is beneficial but i don't think this is the case on a single engine app.
Outboard drag racers have been sanding/profiling lower units for many, many years, and straight was not what they were after. Running a high x dim will result in increased speed but on a single it will try to prop walk. Prop walk will cause the driver to crab the lower to keep the boat in a straight line. Look at the skeg mounted torque tabs on the fastest of outboard drag boats and you wouldn't believe the curve. Drag boat skegs running right hand rotation props will have the stbd leading edge ground on back to mid skeg. On the port side, from mid skeg back to the trailing edge is ground on. This curved skeg is the fastest setup on a single engine. |
Originally Posted by Lauderdaleboats
(Post 3792528)
Having a true straight lower on a twin engine appllication is beneficial but i don't think this is the case on a single engine app.
Outboard drag racers have been sanding/profiling lower units for many, many years, and straight was not what they were after. Running a high x dim will result in increased speed but on a single it will try to prop walk. Prop walk will cause the driver to crab the lower to keep the boat in a straight line. Look at the skeg mounted torque tabs on the fastest of outboard drag boats and you wouldn't believe the curve. Drag boat skegs running right hand rotation props will have the stbd leading edge ground on back to mid skeg. On the port side, from mid skeg back to the trailing edge is ground on. This curved skeg is the fastest setup on a single engine. |
Originally Posted by Lauderdaleboats
(Post 3792528)
Having a true straight lower on a twin engine appllication is beneficial but i don't think this is the case on a single engine app.
Outboard drag racers have been sanding/profiling lower units for many, many years, and straight was not what they were after. Running a high x dim will result in increased speed but on a single it will try to prop walk. Prop walk will cause the driver to crab the lower to keep the boat in a straight line. Look at the skeg mounted torque tabs on the fastest of outboard drag boats and you wouldn't believe the curve. Drag boat skegs running right hand rotation props will have the stbd leading edge ground on back to mid skeg. On the port side, from mid skeg back to the trailing edge is ground on. This curved skeg is the fastest setup on a single engine. |
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