Torque Lean
#1
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Thread Starter
Torque Lean
03 tremor close bow, - 25 foot boat
re freshen the motor last winter
new motor is got a ton more power but anything over 60-70% throttle and accelerating it rolls pretty hard
merc ITS with a bravo 1 XR 1.5 ratio, standard length leg - not sure on prop dept in relation to the bottom of the hull
currently running a stock RH 28P bravo, rolls hard to port - moved weight around and makes no diffrence
ran a labbed bravo 1 LH 30, rolls just as hard to starboard and the exact same top speed.
cant trim up out of the roll as it puts the boat into a pretty good porpoise
any ideas?
re freshen the motor last winter
new motor is got a ton more power but anything over 60-70% throttle and accelerating it rolls pretty hard
merc ITS with a bravo 1 XR 1.5 ratio, standard length leg - not sure on prop dept in relation to the bottom of the hull
currently running a stock RH 28P bravo, rolls hard to port - moved weight around and makes no diffrence
ran a labbed bravo 1 LH 30, rolls just as hard to starboard and the exact same top speed.
cant trim up out of the roll as it puts the boat into a pretty good porpoise
any ideas?
#2
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VIP Member
I have this very same problem on my 28 heat...I can trim up and throttle through it but mid range cruising is baadddd....I installed 280 kplanes as part of my rebuild and I have to drag the port tab at like 4-5 on the indicator and it pops up level like nothing happened....not sure if tabs are an option for you or not?
I have also heard that switching to a LH prop and obviously switching your shifter helps with the roll but I can't speak from experience on that
Good luck!!
I have also heard that switching to a LH prop and obviously switching your shifter helps with the roll but I can't speak from experience on that
Good luck!!
#3
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Thread Starter
I have this very same problem on my 28 heat...I can trim up and throttle through it but mid range cruising is baadddd....I installed 280 kplanes as part of my rebuild and I have to drag the port tab at like 4-5 on the indicator and it pops up level like nothing happened....not sure if tabs are an option for you or not?
I have also heard that switching to a LH prop and obviously switching your shifter helps with the roll but I can't speak from experience on that
Good luck!!
I have also heard that switching to a LH prop and obviously switching your shifter helps with the roll but I can't speak from experience on that
Good luck!!
im 96% sure its drive line torque and ist just rolling the boat but i have no idea how to fix it, change gear ration?
shorty drive to lessen the leverage point?
do a surface drive? haha
#4
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VIP Member
I hear ya on scrubbing speed....obviously different boats but I have a shorty on mine and it made no difference on the lean....that's all I got lol
Does it do it with the drive all the way tucked in? I know mine does it worse when I'm trimmed out...Also if its a pad boat you may be right at the point of falling off the pad making the lean much worse..have you tried the ole steering wheel flick and see if it will jump up on the pad and correct itself? Just a thought maybe??
Does it do it with the drive all the way tucked in? I know mine does it worse when I'm trimmed out...Also if its a pad boat you may be right at the point of falling off the pad making the lean much worse..have you tried the ole steering wheel flick and see if it will jump up on the pad and correct itself? Just a thought maybe??
#5
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iTrader: (3)
the its has a setback to it. With a standard lower your prop is now even deeper. so a big prop not only pushes the boat forward, it also turn the drive into a lever resulting in the lean. try borrowing a shorty lower. also if your still running a 3 blade try a 4 blade prop.
#6
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Thread Starter
no pad, its a single step v hull 24* V, small step - maybe 1-2 inches deep
been trying all 4 blade props
little to no diffrence on the lean between zero trim and its happy area when cursing, to much trim it just purposes
been trying all 4 blade props
little to no diffrence on the lean between zero trim and its happy area when cursing, to much trim it just purposes
#7
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Thread Starter
the its has a setback to it. With a standard lower your prop is now even deeper. so a big prop not only pushes the boat forward, it also turn the drive into a lever resulting in the lean. try borrowing a shorty lower. also if your still running a 3 blade try a 4 blade prop.
like staying with a 28p but going to a 15 or 14.75" diameter should lessen the roll?
#9
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Thread Starter
if anything i feel like if i could get more lift with less trim it may let it flatten out and not purpose