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Thread: Black 21 extreme with twins
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01-09-2017, 06:55 AM #16
the tail weight must make the hop pretty bad during cruise, I remember dave wanting to get rid of the boat because of it, let alone trying to run one offshore
action mobile marine, 772 528 0754, dealers for aces fuel products,wolf efi, pro marine,latham and gaffrig/livorsi. we build gearcases and modify them(3 litre) to ratchet, and powerheads as well. 21 skater/3 litre wolf efi 113 mph the engine build http://www.screamandfly.com/showthre...-3-litre-build
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01-09-2017, 07:32 AM #175000 RPM
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Yes i talked to buzzin. My dad did own mine years ago and it was a missle and i was very impressed how it ate up boat chop. I dont remeber it having porpoise as it is set up well and also has a k plane which takes porpoise out when water is flat. Like my dad said just takes seat time and the boats great. Im just trying to figure out if 15 inch mids will swamp the motors coming off plane. It will need 5 inches of setback for the 15's to clear the transom and some bigger wedges. The motors now are bolted straight to the boat. The 15 inch mids will help improve balance getting the motors lower and the look factor haha. Just dont know hoe setback will effect the boat.
Last edited by Esox4130; 01-09-2017 at 10:14 AM.
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01-09-2017, 04:01 PM #18
Hoe setback that must be girls in the back seat lol
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01-09-2017, 04:03 PM #195000 RPM
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01-09-2017, 05:57 PM #20
Me thinks at least 4 wet spark plugs with 15's.....
is gone
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01-09-2017, 06:27 PM #21
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01-09-2017, 06:59 PM #22
The more backseat "rack" the more wet plugs!😝
is gone
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01-09-2017, 07:08 PM #23
I glad I'm still alive to laugh about that sick fast POS. One will need a lot of seat time to tame it, Swannee was a trip, like riding a bull never knew what it would throw at you.
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01-09-2017, 07:12 PM #24
I do recall my son figuring it out on day 2 and smoking everything we came across. It was a lot more fun to look at than drive or ride in for that matter. It bucked so much we broke the K planes numerous times.
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01-09-2017, 09:25 PM #25
I remember one way back at one of the Roland/Rim Ditch get togethers that had a pair of Drags on it. Ran 120's I think.
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01-09-2017, 10:09 PM #26
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01-10-2017, 08:28 AM #27
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01-10-2017, 08:32 AM #28
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01-10-2017, 09:45 AM #29
Essox, yours ran 136 mph on 2 radar guns at Alum Creek Shootout in 2002 or 2003 with some left in it. That whole day I continually ran into into water psi problems and was eating impellers with a pair of Alex HLedin 390+ hp F1 motors on it. I put 3 sets of water pumps in it that day at the shootout and every time it went past 125, I was blowing the impellers out of it. I would leave the 20" on it, make some power and don't mess with the set up as long as it is the same as when I sold it to your dad. I have owned 3 of the original 21's with twins and this one rode and ran the best. Really had no bad habits. That boat ran 118 all day long with stock 260's. Enjoy it and be safe.
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Michael J Giesler, Frank Molé liked this post
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01-10-2017, 11:04 AM #308000 RPM
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Todd how fast was Dave's skater that he bought from you
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