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140mph 22ft I/o ??????

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Old 01-16-2015, 05:16 PM
  #51
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Originally Posted by SB View Post
Let's not forget Geoo with his Mighty Mouse ! One, if not the, most famous small Donzi's ever.

Click for larger picture: http://www3.telus.net/spectrasonly/GEO.jpg
Found a few vids. There's 'better' ie faster vids of it out there somewhere.

http://youtu.be/1jKhIXJ0fME
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Old 01-16-2015, 05:20 PM
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And

http://youtu.be/7YM9LxY-i20
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Old 01-16-2015, 05:49 PM
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Found some more:

http://www.donzi.net/photos/Donzivideo2.wmv

http://www.donzi.net/photos/Radarshootout.wmv

http://www.donzi.net/photos/Enginedyno.wmv
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Old 01-16-2015, 06:57 PM
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Originally Posted by doubleduecedonzi View Post
My 22 is single stepped hull I guess contributes it getting squirrelly above 80mph. My question to you is do any of these competitive ski boats run extension boxes? Do they lower the x dimension to gain
More control? Other than running huge hp engines packed in small hull's what does it take for these boats to get to and handle at the speeds they run? 100 or 110+
No extension boxes. All of them pretty much run #6 drives. Used to run #5's but they had a high failure rate. #6's have a lot of built in extension compared to a 5 so was certainly no need. It was noted by some that trim effort was easier with the 6 compared to 5's.
In comparison to offshore boats we run our drives very deep! For 1 main reason, to see the skier. If you ran them surfaced as they are designed to you wouldn't see the skier for the rooster! I'm assuming this also helps with the high speed handling and cornering also.
I have noted since the 1350 packages have come along and become so popular is they don't appear as well balanced in big water. The custom twin turbo set ups run either turbo 400 or powerglide gearboxes (both use 1st and 3rd, second is removed). These are quite long in comparison to a merc transmission hence the custom engines end up further forward in the boat.
None really run true steps. Some have step Chine's and strakes but the hull surface and running plank are flat. Not sure why they don't run them but the need to corner very fast and tight may have something to do with it?
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Old 01-16-2015, 10:08 PM
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Originally Posted by SB View Post
Thanks do sharing that SB! That's a sick lil donzi
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Old 01-16-2015, 10:35 PM
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Originally Posted by Kurt Hamilton View Post
No extension boxes. All of them pretty much run #6 drives. Used to run #5's but they had a high failure rate. #6's have a lot of built in extension compared to a 5 so was certainly no need. It was noted by some that trim effort was easier with the 6 compared to 5's.
In comparison to offshore boats we run our drives very deep! For 1 main reason, to see the skier. If you ran them surfaced as they are designed to you wouldn't see the skier for the rooster! I'm assuming this also helps with the high speed handling and cornering also.
I have noted since the 1350 packages have come along and become so popular is they don't appear as well balanced in big water. The custom twin turbo set ups run either turbo 400 or powerglide gearboxes (both use 1st and 3rd, second is removed). These are quite long in comparison to a merc transmission hence the custom engines end up further forward in the boat.
None really run true steps. Some have step Chine's and strakes but the hull surface and running plank are flat. Not sure why they don't run them but the need to corner very fast and tight may have something to do with it?
Thanks for the info. I'll put it to good use. I think the lowers x is key
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