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27 Activator ?'s

Old 11-14-2012, 05:28 PM
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Originally Posted by ajrdonzi18
I'm running just under 800 Hp w/ specified x-dim. And 32 4 blade and I see 106 gps any time; scary as hell! Awesome boat! Thanks Mark!
That is a fast boat with that power


gear ratio and rpms?
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Old 11-15-2012, 06:23 AM
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What's the speed difference between the stepped and non-stepped hulls? Are these good rough water boats?
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Old 11-15-2012, 07:30 PM
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FredZ - 1.5/just about 6 grand on the revs!


Stepped hull 27's are significantly faster on average than straight bottom hulls if all other variables are the same. Not sure about exact numbers. I can tell you 650 hp in an older straight bottom was showing aroung 80 mph. I dont think speed numbers would be linear though. As the step 27 increases speed, it seems to need less hp to gain more mph; shes very efficient aero and hydro-dynamically.
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Old 11-16-2012, 04:21 AM
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Originally Posted by ajrdonzi18
FredZ - 1.5/just about 6 grand on the revs!

What drive are you using? any problems with it?

i got almost the same setup that is going in a 27 in the future. XR/sportmaster 1.35 and just over 800hp.
Thinking the drive is the weak spot?
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Old 11-16-2012, 06:22 PM
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You'll probably be on borrowed time with the xr. I run an imco scx/sc combo. I replaced the lower gear set at about 70 hours.
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Old 11-16-2012, 06:39 PM
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Anyone know how to get in touch with the guy that has the hull mold?
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Old 11-16-2012, 07:01 PM
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Originally Posted by Black Baja
Anyone know how to get in touch with the guy that has the hull mold?
PM "'mange"
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Old 11-17-2012, 12:01 PM
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Not that you'd be running big numbers in rough water with a 27' boat, but I presume these are good in the rough? What is the hull based on? I presume it's a stretched 24x7?
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Old 11-18-2012, 06:48 PM
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Originally Posted by dba900
Not that you'd be running big numbers in rough water with a 27' boat, but I presume these are good in the rough? What is the hull based on? I presume it's a stretched 24x7?
Not sure what you consider fast for a 27' in the rough but I think you would be surprised. Very capable hull in the rough.

The hull is from Bill Farmer's 27 Excalibur. Wellcraft bought the molds in 84-85 and made them for a few years then Activator bought them. Years later the steps were added.
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Old 11-20-2012, 06:37 AM
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Well, presumably not 106 mph! Good to know. One of these might be a good upgrade from our 24 SB in a few years.
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