Arneson on A single engine cat?
05-22-2015, 04:23 PM
#22
The center pod on the 27' Speedster is only 2" above the keel line and does not have an effect on the performance. Once again the 27 Speedster in question had an engine problem. 1st day in the water 105 moh @ 5K then progressively slower and slower and slower unitl it reached 89 mph.. Everyone said it was the drive, how it would slow down is a weird assumption, so they ponied up $27K and put an IMCO on it.. 72 mph... Was just with the guy who built this boat last night...
05-31-2015, 05:04 PM
#23
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05-31-2015, 06:22 PM
#24
This has been debated for years everywhere on the internet but it would be hard to "define" any center pod cat a true catamaran as most have and use the pod to plane thus not really catamaran as we would envision one.
05-31-2015, 07:20 PM
#25
Platinum Member
Platinum Member
In the 80's we ordered a 29' Sanger Alley Cat, actually it was hull# 2, our boat was rigged with twin Merc 3.4 outboards to race offshore. hull # 1 was ordered by Howard Arneson and was rigged with surprise surprise a single Arneson Surface drive connected to a Gas Turbine Jet motor. Howard also ordered a couple more boats from Sanger Jack Davidson, he built one for a guy named Bernie Little. Bernie had something to do with jet engine Unlimited Hydro Planes and understood that a single surface drive and a jet engine may just run rather well. The other one that Howard did also had one of those gas turbines in it, Howard built that one for Al Copland, another guy that liked to go fast on the water, very fast. Our twin engined "offshore race boat" ran just at 100 mph, hmmm, Howard's pleasure single surface drive boats went faster, much faster. Howard told us many times that he would be happy to help us by re rigging our race boat with his setup if we wanted to go really fast, problem was the APBA would not let us play with it if we gave it to Howard first. Howard's set up was super reliable propelling him all around the western side of the country all daylong at insane speeds without ever breaking down, at speeds that approached 140 or so while we blew up motor after motor after motor.
I guess Howard had it figured out after all. Actually after the Sanger Cat, Howard decided to do something slightly larger and faster, he had his other good friend Peter build him a 32 Skater for twins and he really got serious about going fast, I am willing to bet that next 32' boat hit 200 or so without any one other than Howard knowing about it, he was a rather shy man, and I would not be surprised if it was the very first Skater to hit 200, or very close. Peter then built Howard a 32 hull that Howard put a Sanger deck on, how about that, a 32 Skater/Sanger
Not a pop or a clandestine illegal copy but one friend sending a deckless hull to another friend. Only one ever built. Actually I don't remember if Peter or Jack did the Sanger deck, I am sure Rik would remember.
I guess Howard had it figured out after all. Actually after the Sanger Cat, Howard decided to do something slightly larger and faster, he had his other good friend Peter build him a 32 Skater for twins and he really got serious about going fast, I am willing to bet that next 32' boat hit 200 or so without any one other than Howard knowing about it, he was a rather shy man, and I would not be surprised if it was the very first Skater to hit 200, or very close. Peter then built Howard a 32 hull that Howard put a Sanger deck on, how about that, a 32 Skater/Sanger
Not a pop or a clandestine illegal copy but one friend sending a deckless hull to another friend. Only one ever built. Actually I don't remember if Peter or Jack did the Sanger deck, I am sure Rik would remember.
06-01-2015, 06:45 AM
#27
Charter Member
Charter Member
well maybe you could convince my insurance company that its not a catamaran its just a modified vhull....
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06-01-2015, 12:39 PM
#28
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veed center sponsom at or below outside aka tunnel v
squared center sponsom at or below outside aka mod v tunnel or tri hull
in our formula 1 outboards we run a 10" prop splitshaft at good speeds and turn on a dime
so does work
its the prop shaft angle that is tricky on a cat that has no center pod and a short arneson
shaft angle is pushing down the bow,,so natural bow lift from compression is not there
trim up to get bow up and tail is loose
both senerios is not a good outcome
a standard I/o works fine as prop shaft is lower and proper angle
the short arneson set up is hard to get angle,,,,,id try lot longer drive
as why on talon works fine,,,,has pod to flatten water and lower shaft output
Last edited by johnmiffco; 06-01-2015 at 12:47 PM.
06-01-2015, 01:03 PM
#29
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iTrader: (4)
There have been a few different single engine cats with arnesons. I do believe there was a certain 26 that put up some big numbers, however during testing in a turn it got up on the prop and spun in the turn. I don't remember all the details this was a while back.
#6 is going to be your best bet.
#6 is going to be your best bet.
On a side note, ask arneson how many gear and chain failures they see? The number is close to zero. For anyone considering a number 6 drive, price some gears, gimbles, and housings.....then ask if you can afford a number 6 drive when it breaks.
One of my biggest pet peeves in the boating world is bad press about arneson or surface drives in general by people with NO EXPERIENCE with them
06-01-2015, 01:05 PM
#30
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iTrader: (4)
