my friend just purchased an 04 3100 and have a few questions.
1- do all of these porpus from 70-90?
he has imco stand offs and extreme drives with hydromotive p-5 props.
2- is it better to turn them in or out? right now they're out.
thanks

first who is your friend, and which boat did he buy ...
all true tunnels porpoise in some speed range, so yes.
ALWAYS TURN THEM OUT!!! they are much safer this way and handle much better.

Don

great answer Don :-)

That boat happen to come from Randy??? in cumberland?
I saw his reply on hotboat and said he was having problems with the boat, what kind?

what kind of troubles ???

Don

lil things like trim pumps not running same speed, hose came off, just little things. gotta say, the guys at cumberland are awesome. all the parts i needed were shipped right out and i ALWAYS got a "heads up" call and a follow up call. randy if you look on here, great crew working with you!

I have ridden in alot of 3100's and 2600's. The 3100 should have a small range on Porposing in flat water. You should see no bouncing in the rough though. Be sure to turn those props in. The 3100 tends to be sensetive to certain props. Try to get hold of ED he could give you some advice.

always turn them out... that is from ED.
he will also say that he likes mercury bravo 4 blades.

Don

Sorry I meant to say turn them out. Glad you caught that.

Blownboat I saw you at Pleasant last weekend, the boat looked good. Did you get everything worked out? Let me know if I can help, I represent A/O for the West.