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View Full Version : Do i need more setback?


mntownle
08-03-2012, 09:34 AM
If i trim my motor very high i start loosing speed do i need more set back?
specboatops
08-03-2012, 09:48 AM
Need more info, boat, motor, current set back, prop..............................
transomstand
08-03-2012, 10:38 AM
If i trim my motor very high i start loosing speed do i need more set back?

That's what's supposed to happen. The prop is most efficient when pushing straight ahead. Excessive trim angles are always slower. It's very possible that more setback will help, but like Chris said, need a bunch more info.
mntownle
08-03-2012, 10:42 AM
Its a 18 foot ranger with a Merc 150 efi and i have 6 inch jackplate on it now and i'm runing a 24 scorpion prop.... Its running best about 3/4 trim...
specboatops
08-03-2012, 11:07 AM
How "HIGH" in the nose cone in relation to the bottom of your pad ?
steve@scp
08-03-2012, 12:36 PM
6" plate is fine on that boat. i'd look for a good 24 or 25 tempest.
trim setting on that rig is normal for that boat. they will be faster at 3/4 trim.
jmho
mntownle
08-03-2012, 07:38 PM
6" plate is fine on that boat. i'd look for a good 24 or 25 tempest.
trim setting on that rig is normal for that boat. they will be faster at 3/4 trim.
jmho
I have a 10 inch jackplate and i was wondering if it would be worth trying, i dont want to spend any more money on a new prop.....
steve@scp
08-04-2012, 08:16 AM
gonna depend on which "model" your ranger is.

example. i had a 481V years ago. with a 10" plate the boat was as fast as a 461vs. but the transom broke (too much setback)
ranger fixed that transom and we put a 6" plate on it. it lost 2-3 mph vs the 10" plate.

since you already have a 10" plate it never hurts to try it. it's just time and silicone.
mntownle
08-04-2012, 01:12 PM
I have a R 82 sport 1998 model..it dosnt have much setback built into it.... It 2000 they added more setabck to the transom and they run and handle better...
mntownle
08-06-2012, 10:48 PM
6" plate is fine on that boat. i'd look for a good 24 or 25 tempest.
trim setting on that rig is normal for that boat. they will be faster at 3/4 trim.
jmho
I put the 10 inch plate on and i gained 1 mph.... But i hit something in the river and bent my prop bad and it bent my prop shaft bad..... I'm gonna claim insurance on it... Should i get a tempest or the fury...?