Offshoreonly.com - Does anyone elses 31 not require any trim or tab? How do you run it?

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- - Does anyone elses 31 not require any trim or tab? How do you run it? (https://www.offshoreonly.com/forums/sonic/232640-does-anyone-elses-31-not-require-any-trim-tab-how-do-you-run.html)

Quote:

Originally Posted by kyboy1020 (Post 3135320)

I am just curious how the other 30/31s out there ride. Attached is a picture of my boat running wide open with tabs all the way up and drives all the way down.

Tabs - Do you run with your tabs up up or neutral?
Drives - When I start to get my drives trimmed to around 3 04 4 the boat begins to coem very loose...after 3-5 range it begins to bounce a lot. I am not sure if my boat just doesnt have enough speed (max around 55-60mph) or if my tabs are in the wrong position. Or if the hulls just have a ton of lift and don;t required much trim at all. All I usually use my tabs for it to even out weight from my water tank.

How would you say the lift and ride look from the pictures?

boat looks wet you need more trim also what plum said props out, one of my friends has a 38 with 800hps and those b max drives he should of went konrad ace cause he has blown the maxes a lot. well his boat run b1 props and uses a lot of trim to get it out of the water. the bouncing bow is mostly deep drives and trimmed near the max while cruising. good luck.

Quote:

Originally Posted by AIR TIME (Post 3140676)

U saying I need to be trimmed near the max because of the deep drives?

When I put my 04 31ss on plane, there is an annoying porpising that I throttle through or trim out depending on conditions such as wind, boat load and balance. Changeing props helped a great deal. I replaced the stock Bravo 1 four blade 26 pitch with Hydromotive five blade labbed 25 pitch. What a difference. I feel the new props are better in every respect especially mid-range acceleration.The boat planes easier, stays on plane at lower rpm, and same top end. Best upgrade I've done yet.:party-smiley-004:

5 blade may be the trick. I tried hydromotive 4 blades and they sucked. Buried the bow, I couldn't carry it.

Chris you may be right I have heard the same that hydromotive 4 bladed props and Sonic hulls don't play nice together.

I generally run my 2006 31ss with no trim at all. The exceptions are:

1. When in 25mph and 30mph speed zones I put the trim tabs down which keeps the bow down for visibility.
2. When in minimum wake zone I put the tabs down for the same reason as #1.
3. When in heavy seas( 4ft+) I adjust the trim to keep the boat level.
4. When running high speeds (over 60mph) I trim the drives out for maximum rpm.