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800hp 1:36 gear on a kv
im going to from a 1:50 to a 1:35 imco sc standard legnth drive on 38ft scarab kv. please give any input on the pro's and cons of making this change. im more interested in a good cruise speed (thats not why i did the deal) so what props to start with? its a done deal so no talking out of.....i have to make it work. thanks in adavance!!
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the main reason to go from 1,50 to 1,35 is if you are allready at a 36 pitch prop.in my opinion ,with a pair of 800 hp motors,1.35 gears is a good idea.
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Originally Posted by MrSneakAttack
(Post 3560552)
im going to from a 1:50 to a 1:35 imco sc standard legnth drive on 38ft scarab kv. please give any input on the pro's and cons of making this change. im more interested in a good cruise speed (thats not why i did the deal) so what props to start with? its a done deal so no talking out of.....i have to make it work. thanks in adavance!!
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Originally Posted by MrSneakAttack
(Post 3560552)
im going to from a 1:50 to a 1:35 imco sc standard legnth drive on 38ft scarab kv. please give any input on the pro's and cons of making this change. im more interested in a good cruise speed (thats not why i did the deal) so what props to start with? its a done deal so no talking out of.....i have to make it work. thanks in adavance!!
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Originally Posted by mike tkach
(Post 3563025)
what props are u running with the 1.50 gears?
34 bravo's at 5500 rpms.....the boat has boxes so my slip is a little high at 21% or is this normal with boxes and should i try 5 blades? still learning the boat but the boat feels good and everything feels right so over trimming is not a concern... |
Originally Posted by bajabob
(Post 3563521)
i did this to my24 baja with 718hp midrange big improvement 600rpm less then 150 gears3000 rpm i am doing45mph at 5600rpm doing 81.9 so far still tweaking:drink:
dang you have baja in the wind huh :coolcowboy:...thats rollin for that boat...good job |
Originally Posted by MrSneakAttack
(Post 3563528)
34 bravo's at 5500 rpms.....the boat has boxes so my slip is a little high at 21% or is this normal with boxes and should i try 5 blades? still learning the boat but the boat feels good and everything feels right so over trimming is not a concern...
Where are propshafts in relation to the bottom? Am I correct in assuming the boat is running around 90mph currently? |
never measured but it looks like about 2 inches below the bottom of the boat...90mph is corrrect light and right
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fixx
5 blades will tighten things up a bit but that kind hp and a 5 blade may kill the drive,,would rather have some slip :drink:
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