Project: Creating a 100-mph Chaparral
#42
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Joined: Dec 2007
Posts: 369
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From: New Jersey
#43
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Joined: Aug 2012
Posts: 785
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From: Lake Wallenpaupack, PA
I have a friend who added a Procharger and Bravo I XR drive to his Chaparral 256. Best he could run was 70 with, I believe, around 600 hp. Different hull but Chaps are really not built for high speed. I wish this guy luck but I doubt he'll reach his ambitous goal. I just hope he doesn't kill himself in the process. But I give him credit for keeping an old classic alive. I always liked the Villains.
#44
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From: Fishers, IN
With that said, I see the budget for this project going up. Also the way I understand this is he is still going naturally aspirated and they expect between 600-700 hp. I looked and that year and model boat was said to have a dry weight of 3200 lbs. I don't see 700 hp getting that boat anywhere close to 100 mph. IMO I could see low 80's but I sure wouldn't ride in it.
Last edited by indywhsle; 03-20-2013 at 12:38 PM.
#45
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From: OK CIty, OK
#46
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Joined: Aug 2007
Posts: 414
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From: Overland Park, KS 87mm Loto
#49
Obtaining speed is more than just throwing horsepower at an object. What about the hull's ability to handle the hydrodynamic forces at that speed? What about the torque generated by that engine on the structure? Is there a hook in the hull that'll come to light at higher speeds? Straight strakes? What if he hits some chop at the high speed, what if he blows his little Alpha up at 90 (if he ever gets close)? I'm not a boat builder and claim to know these answers but if I were offered a ride on that thing I'd take a seat at the bar instead.




Hope he doesn't need um though...
