Page 1 of 2
Trim Tabs
Posted: Thu Jan 28, 2010 9:52 am
by MTP
I believe that my F32 has factory trim tabs what are your thoughts on going to a larger tab or a Bat Wing Type?
Posted: Thu Jan 28, 2010 10:25 am
by ready123
As are mine... why do you need more tab force?
Mine do all I need... I am able to drive the bow right down should I wish.
Personally I would not want larger tabs in any kind of following sea in an F32.... I have experienced the bow dive at speed because of some tab down in a following beam sea. It threw a lot of stuff to starboard including the passenger on the bridge bench seat... not nice.
Posted: Thu Jan 28, 2010 10:50 am
by alexander38
bigger tabs make more drag. what's the boat not do that you want it to ?
Posted: Thu Jan 28, 2010 1:19 pm
by prowlersfish
alexander38 wrote:bigger tabs make more drag. what's the boat not do that you want it to ?
Be live it or not, smaller tabs cause more drag . Why ? becuse you have to put them down further to get the same effect
Posted: Thu Jan 28, 2010 2:09 pm
by Paul
Paul is right on the money here. More down angle required =more drag. Greater surface area = greater lift = less down angle required = less drag.
Posted: Thu Jan 28, 2010 2:41 pm
by alexander38
point taken. but square inches is square inches, a wider tab center line out not fore to aft would say 6" x 18 would lift faster than a 12 x 12 right ?
but a 12 x 18 more drag ? And once on plane tabs should be up as much as you can get them..
Posted: Thu Jan 28, 2010 2:47 pm
by Molly Too
I too can attest to a tab failure while at WOT! Damn near lost everyone on the boat. In a '32 following seas can be a b.....tch anytime and down tabs are not good in that situation. Ever since then, I rarley use use them and keep 'em up.
Posted: Thu Jan 28, 2010 3:12 pm
by ready123
alexander38 wrote:And once on plane tabs should be up as much as you can get them..
except with an F32... they run better with some tab due to being aft heavy, in my twin tank layout anyway. If I add some down tab on plane I get a significant speed increase. I do try to remove tab in following sea conditions.
Posted: Thu Jan 28, 2010 3:15 pm
by MTP
Molly Too wrote:I too can attest to a tab failure while at WOT! Damn near lost everyone on the boat. In a '32 following seas can be a b.....tch anytime and down tabs are not good in that situation. Ever since then, I rarley use use them and keep 'em up.
WOT ? Water on Transom?
Posted: Thu Jan 28, 2010 3:30 pm
by ready123
MTP wrote:Molly Too wrote:I too can attest to a tab failure while at WOT! Damn near lost everyone on the boat. In a '32 following seas can be a b.....tch anytime and down tabs are not good in that situation. Ever since then, I rarley use use them and keep 'em up.
WOT ? Water on Transom?
Wide Open Throttle
So why do you want bigger tabs?
Posted: Thu Jan 28, 2010 10:13 pm
by wowzer52
Like prowlerfish and Paul said, More surface area=more lift. Talk to any pilot. I would love to have bigger tabs but I don't want to spend the time or money.
Posted: Thu Jan 28, 2010 10:18 pm
by Peter
okay, speaking of trim tabs. What is the approximate F 36 trolling speed, with one engine shut down, the other at idle, and both factory tabs all the way down?
Posted: Fri Jan 29, 2010 1:20 am
by alexander38
ok i get what you're saying, but look at my question witch one would be better ?
Posted: Sat Jan 30, 2010 9:46 pm
by alexander38
unanswered ?'s here
Posted: Sat Jan 30, 2010 10:47 pm
by prowlersfish