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Originally Posted by pqjack
(Post 3794004)
just curious...at what speed nose cones start to make a difference?
im runnin 77-78 with an XR.... There are definitely exceptions to this however. My boat blows out at 75mph with a non nose coned box. If you run your drive deep and are blowing out add a nose cone but keep it as small as possible, just enough to prevent blow out. Every extra bit of length added to gear case is extra drag. |
Nosecone
70 MPH gets you 1 MPH, 80 - 2MPG but its get prop inefficiency too- I heard 15% slip down to 11%
http://miami.craigslist.org/pbc/boa/3331172343.html - I have one for sale |
I used to run low to mid 80's and added a Hydromotive nose cone to my B1 and it really settled the boat down and allowed me to run more trim. With the new motor, I wouldn't even think of not having a nose cone. It's been a huge improvement. I don't have low water pickups so I ported my existing to catch more water now that I'm running faster with more trim.
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drilling side ports ?
Originally Posted by Mr Gadgets
(Post 3793990)
Hydromotive, does not like any holes in front of the cone. You can drill the side water ports, if your X isnt too high and cover the low water pickup. Most my experience has been with V bottoms and Hydromotive cone works the best. Not sure about a cat though. I have dimensions for drilling the side ports if you want them.
Dick |
nose cone
Is there somewhere i could send my xr lower off to and have the work done.. Have the hydromotive nose cone added..
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