33ft active thunder props
 

just a question i purchased a 2000 active thunder with twin 502 procharged, the prop i got with the boat are 34 pitch 4 blade, what props should be on this boat? hopefully someone can help me as it is hard to get the boat out of the hole ....:angry-smiley-038:

You should post this in the AT section, you will get alot of help.

a Mirage is a 3 blade prop.......

Please post pics of this imaginary 2004 33 AT since no 33's were made in 2004. No 32's made in 2004 either for that matter.

Did someone hit a nerve?

Post in AT forum and I am sure Brian will have a answer for you.:D

33's didn't exist then so I assume a 32. Anyway, my 382 came with Procharged 500's and 34P 4 blade bravos. It blew-out getting on plane but needed the large pitch once up and running. Just a trade-off for high HP/gear ratio combos....you could try a 1.36 drive ratio and lower the prop pitch but I hardly feel it's worth the expense.

I don't think anybody hit a nerve but he is right. Pat didn't make a 33 then and he also didn't make any 32's in 04 either. I'll bet you bought Aaron's (thunder-struck) 32. I don't remember the year but it's about 01 maybe 02. I don't know much about those but I would think you would want to start with a set of 32 bravos and use that for a baseline.

Matrix, welcome to the board. You must now be indoctrinated into the cult. Move over to the AT forum and post again and we will begin the mind meld process. Maybe the natives will be more civilized then.

Did you talk to Aaron offline re your issues?

I drop the tabs to get on plane quicker. No real issues with my boat getting on plane but it makes it easier.

No, but he should at least be smart enough to know what he bought before he tries to ask for advice about changing stuff.

I figured it was the 2000 32 that he was talking about since it just sold and is the only 32 I know of with prochargers.

Welcome to the cult. :D Now get your butt over to the AT forum.

Get rid of the Mirages and get a set of Bravos! If you don't have any friends who can lend you a set to try give BBlades a call. They have a loaner program.

I bet the seller had a nice set on there when he owned it...

try a set or 32 bravo s should do the trick

o.k...o.k....o.k..... i posted this for a friend, and yes no idea about this style of boat or the props, just what i was told third party, just trying to help a new boater out....he was asking questions as we all know big pitch props are tricky to get out of the hole....

is that you Rick??

If this was Aaron's 32, that boat was set up with 34 Bravo I's with high x-dimensions. That prop got great efficiency once it's on plane, according to Aaron. Also, many will tell you that once you get over a 32p Bravo, the prop efficiencies aren't as good... leading to a gear ratio change, but that's pretty extreme at this point. On Aaron's boat, that was an extremely efficient prop (I never asked him how hard is was to take off though).

In my experience so far with higher X-dimensions on a 32 AT, the Bravo I 4-blades can be tricky getting on plane (Some AT owners have run Hydromotive p5-x's on the AT with huge improvements in taking off and at top end). My procedure has been to tuck the drives, then give then slowly add throttle to gain speed up to about 12-14mph, not exceeding 3000 rpm, then put the tabs down half way or so and you should start hooking up, so bring the throttle up a little more to get back to the same RPM, your speed should increase enough to get on plane. Bring the trim up a little, then as you continue to pick up speed, start bringing the tabs back up until the bow will carry with the speed and no tab.

5 blades give you another blade to grab more water when you're cavitating taking off.

Personally, I am about to try the p5-x on mine and see what happens. Should be trying them out as soon as Lake Michigan calms down :)

Most of the guys use Bravo I props on the AT's with the best results... but the boats that have modified X-dimensions, and props with 32+ pitch are trying for speed, personally, I'm working on figuring out what works best on my boat. I'll let you know!

34 Bravo 1 props have a geometry different than the rest of the Bravo family. Planning is their worst attribute.

5 blade props are a great option.

After reading your question i did not see any thing saying mirage props so where did that come from, and you said 2000 for the year,, On my 2000 32 thunder with 500 hps peped up a tad i run 30 pitch at 5500 rpms or 32 pitch at 5300 rpms b1s with msd boxes, give or take a little. with a 502 with charger i assume you are making more power than me by a little so i would think 32s would work well, what rpms are you running with the 34 pitch.

he edited the Mirage part out......

OK thats why i did not see it.

...........and the year:D


matrix, tell your buddy who bought the boat to get on OSO. Tell him you'll be his fenderbich, but he's gotta ask his own questions. LOL:D:D

Yea i agree

I'm running the same set up with 2 inch shorties , put the drives in and the tabbs neutral to much tabb will lift the back of the boat & cause you to blow threw the prop . Thats what works for me . Good luck Jeff :drink: