Prop feels wrong
 

Hope all is well; I have a 27 baja boss 509 procharged 730 hp and 750 tq......iam currently running a stock bravo 30 prop. and it feels all wrong, slips bad and makes the boat wobble when coming off plane..Im thinking that it may have helped in the killing of my old bravo -1 drive. does anyone have a solution? thanks patrick,

Define wobble...do you mean vibration?

Vibration indicates something is out of balance...your prop?

Have you tried another Bravo prop?
They are generally great all around propellors.

Chris

Paca

750 tq on a standard single engine bravo is quite a bit for that drive.

A few questions

How deep is your drive, what year is your boat, gear ratio ect. Have you tried a Mirage+? It will have less impact on the drive and not affect the boat as much in terms of prop torque.
If your drive is high, a 5 blade could help with the slip.

Give Bblades a call. It seems to be the way to go.

Happy boating.

Chris, I guess you could call it a vibration. I have not tried another prop. I had the boat out all day today...The boat runs great, but i feel the prop slipping after take off and then hooks up and engages and you feel the acceleration.. Mr gadgets built the drive it has about 5 hrs on it . coming off of plane i feel a vibration throughout the boat. should i try a 28? Thanks

Do the u-joints get greased and gimbal bearing

the u joints are the new sealed type and the gimbal ring gets routine maint.I think its to much prop for the boat

Can you pull the rpms that you want with that pitch? A 30p shouldnt be far off based on your boat and power, but that really depends on your engine set up. If you want to spin 6000rpm, it is probably too big.

With a high X, you will have some slip getting on plane. Mine slips pretty bad, the prop blows out at 2000rpm and climbs to 3000-3500 rpm, then the boat just rolls over and goes.

As far as a vibration, could be any number of things that are already mentioned.

Philm, I think you nailed it. you just described how my boat is reacting. iam not pulling the rpms, im maxing out at 4900. my rev limiter is set at 5800. I think i'll try a 28, or call brett at b blades.. thanks so much for your input. it really puts things into perspective..

A 2" drop in pitch will gain you about 400rpms. You will have to the 28 prop labbed as well to get the rpms to about 5600.

Glad I could help. A smaller prop with some labbing for your application will help alot. Griff has the right idea.:coolcowboy:

I dont know what is causing the vibration you are feeling coming off plane though.