F70 boggin

Gregdad

Recruit
Joined
Jul 3, 2025
Messages
2
I have a 2025 Starcraft 166 DC with a F70. With 3 grown adults I have trouble getting this thing on plane. It’s actually embarrassing, it takes almost a mile to get up. It had a 3 blade prop with 13.5x15. I’ve since bought a 4 blade with same diameter and pitch from TurningPoint propellers and it’s not that great of a difference.
The dealership says it’s a warranty issue and has since adding tiny little angle iron trim tabs on new boats to help. They’re sending me the pieces to add on but not sure it’ll help. This is what my dealer is saying will work for me. What’s my best option?
 

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Watermann

Starmada Splash of the Year 2014
Joined
Jan 12, 2013
Messages
13,849
Most times it's lack of HP that causes such issues, trim tabs can help but the real fix is more HP in your case that heavy of a boat would need a 90.
 

Mc Tool

Lieutenant Commander
Joined
Aug 7, 2024
Messages
1,672
That aint such a heavy boat ...,😬 are you using the correct procedure trim /throttle wise wise , just how "grown " are these 3 adults and whats your weight distribution ? Smaller light weight boats are sensitive to just where the weight is in the boat at take off . If you have 3 large blokes ,24 gallons of motion potion on board you may have to get the guys to come up forward while getting out of the hole.
Eg my boat is 14', and weighs 650kg on the steel trailer ...so boat maybe 950 lbs, me and the Mrs tip the scales at about 400lbs together and 35hp gets us up in a few boat lengths . Admittedly I have to keep ¾ throttle to stay on the plane ....
Take one guy out and give it a try ....not suggesting you leave him behind for the day 😁...just to see if its is a lack of power issue .
 

Watermann

Starmada Splash of the Year 2014
Joined
Jan 12, 2013
Messages
13,849
That aint such a heavy boat ...,😬
Guess I should rephrase that from just boat to boat and loadout. All decked out for fishing it would be heavy for a 70 with his boats loadout.
Specs...

166-Starfire-166-SC-2-768x512.jpg
 

Mc Tool

Lieutenant Commander
Joined
Aug 7, 2024
Messages
1,672
A 16' boat with a 70 should fly.-----Have the motor performance checked on a dynamometer.
Yeah I reckon, 70 ned should be enough ....but 24 gallons (I believe thats the tank size ) is 4 times the amount I carry ....thats a whole nother 70 kg ish
 
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