Prop? 89 Baja Sport 280
11-26-2010 | 03:30 PM
#11
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Joined: Oct 2010
Posts: 368
Likes: 2
From: Ottawa, ON
Sorry, forgot to mention I spin the +27's 6000rpm's and Back when Brett did them, he explained that they were higher in pitch than 27 to begin with and the 29's (if I wanted to jump up) are more like 30-31's, was something about the way they were cast from the factory. Anyway, BBlades did a great job for me and I hope the guy they put on the phones last summer who had a prop hit his foot is doing better, he was helpful. Was just trying to help a guy out who had the same boat. Have a nice Holiday.
I'm assuming 25P would be good to start? I guess I could just run the 23p to see what I get out of them...local guys were telling me I could run up to 28s but not so sure now. I heard that every 50lbs torque you add, u should add 2" of pitch but maybe thats not a perfect formula.
11-26-2010 | 04:39 PM
#12
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Joined: May 2006
Posts: 17
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From: Kansas City, MO
Sorry, long winded. I would run every prop you can get your hands on and choose the one you like. BBlades has a nice loaner program. Not sure where you want your RPM's to be at WOT, but I'm guessing a Mirage +25 or Bravo 26 would be close and then Brett can do the labbing. I don't post much, I like to lurk in the background and have learned quite a bit. Enjoy the boat and your 502's will make a great foundation when you get the itch to go faster.
11-29-2010 | 07:52 PM
#13
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Joined: Oct 2006
Posts: 210
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Props for 280 Sport
I ended up with stock 26 Bravo I props. Boat has run 79.1 GPS at 5200 RPM with 1000 lbs of fuel and people on board. Would likely get another 2-3 mph with labed 27 three blades. But I like the nice mid range cruise and do not like fighting the chine walk at top end.
When I started with new engines, boat ran 82 mph with 23 pitch pluses, but that was with 6000 rpm tachs pegged, do not know what they were turning, but it was way to much.
Just as a side note, when I had 400 horse 454s, best top was 68 with 23 pluses turning in. Put 24, Bravo I turning in and best top was 66. With the 24 Bravo I turning out dropped top to 64.8 (all GPS speeds) The 23 pluses turning out topped at 67.4. I did all prop testing on the same day over about a 3 hour period of time.
When I started with new engines, boat ran 82 mph with 23 pitch pluses, but that was with 6000 rpm tachs pegged, do not know what they were turning, but it was way to much.
Just as a side note, when I had 400 horse 454s, best top was 68 with 23 pluses turning in. Put 24, Bravo I turning in and best top was 66. With the 24 Bravo I turning out dropped top to 64.8 (all GPS speeds) The 23 pluses turning out topped at 67.4. I did all prop testing on the same day over about a 3 hour period of time.
Last edited by Sport 280; 11-29-2010 at 07:55 PM.
12-03-2010 | 03:07 PM
#14
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Joined: Oct 2010
Posts: 368
Likes: 2
From: Ottawa, ON
Ok, thanks for all the info! Picked up a set up labbed 25P Mirage Plus. So figure that's a good starting point.
BTW
Do you guys really like your Sport 280? I just picked this one up but havent been able to find much info about the model? Is it a good boat?
BTW
Do you guys really like your Sport 280? I just picked this one up but havent been able to find much info about the model? Is it a good boat?
