1988 Top Gun with #6 drives questions
#61
Registered

Joined: Oct 2000
Posts: 1,254
Likes: 44
From: Toronto Canada
There have been a lot of great points made on this thread , to sum it up if you raise the X dimension ( $ 3,500 to $ 5,000 ) , buy new props ( $ 5,000 th $ 10,000 ) , turn the props in you take a boat that is currently dialed in and runs a very respectable speed and in the end gain 3 to 5 mph not to mention the hours of time fuel and aggravation redialing the boat in . Hardly seems worth it . Just my 2 cents . Like i said if its not broke , I say this as I speak from experience I am still trying to get my Cig back in water after deciding to add a notch , raise the X dimension and I have not even started the dial in process . Good luck with what ever path you choose .
RG.
RG.
#63
Sand can move, metal contracts as is cures back to a solid state.
Bottom line is No two drives are the same.
Wilson has found just the skeg alone with up to a 1/2 inch of twist.
Skeg can even set of center and have a twist also.
Next is the whole shape of the bullet.
Not only is not symmetrical due to side effects of casting process
But the whole shape can’t be controlled either.
Wilson has perfected there art over the years and they
Have a series of precision templates to not only
Perfect he shape of the bullet but also the skeg.
In doing this they are sending clean water to the propeller
Which translates to speed.
An irregular shaped bullet can actually direct the water
Away from the prop and take speed away.
Wilson does all their work by Hand.
CNC machining is not an option because there is too much
Difference from one set of castings to the next.
3mph is pretty much the minimum gain. Guys have gained up to 11 mph
It’s a translation of your current drive condition from the factory.
Hull, and set up.
$5000 divided by a $70 hr. shop rate (just a guess)
71 hours = 35.5 hours of hand grinding and polishing per drive.
And the know-how of what they are doing from years of a proven track record.
It’s allot of money, and not for everyone.
You’re paying for knowledge, perfection, speed, and there services for bolt on speed.
Just my take on it and breaking it down
Jon
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#64
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Joined: Jul 2010
Posts: 692
Likes: 0
From: Ma
When a drive is made, the pour molten aluminum into a sand casting.
Sand can move, metal contracts as is cures back to a solid state.
Bottom line is No two drives are the same.
Wilson has found just the skeg alone with up to a 1/2 inch of twist.
Skeg can even set of center and have a twist also.
Next is the whole shape of the bullet.
Not only is not symmetrical due to side effects of casting process
But the whole shape can’t be controlled either.
Wilson has perfected there art over the years and they
Have a series of precision templates to not only
Perfect he shape of the bullet but also the skeg.
In doing this they are sending clean water to the propeller
Which translates to speed.
An irregular shaped bullet can actually direct the water
Away from the prop and take speed away.
Wilson does all their work by Hand.
CNC machining is not an option because there is too much
Difference from one set of castings to the next.
3mph is pretty much the minimum gain. Guys have gained up to 11 mph
It’s a translation of your current drive condition from the factory.
Hull, and set up.
$5000 divided by a $70 hr. shop rate (just a guess)
71 hours = 35.5 hours of hand grinding and polishing per drive.
And the know-how of what they are doing from years of a proven track record.
It’s allot of money, and not for everyone.
You’re paying for knowledge, perfection, speed, and there services for bolt on speed.
Just my take on it and breaking it down
Jon
Sand can move, metal contracts as is cures back to a solid state.
Bottom line is No two drives are the same.
Wilson has found just the skeg alone with up to a 1/2 inch of twist.
Skeg can even set of center and have a twist also.
Next is the whole shape of the bullet.
Not only is not symmetrical due to side effects of casting process
But the whole shape can’t be controlled either.
Wilson has perfected there art over the years and they
Have a series of precision templates to not only
Perfect he shape of the bullet but also the skeg.
In doing this they are sending clean water to the propeller
Which translates to speed.
An irregular shaped bullet can actually direct the water
Away from the prop and take speed away.
Wilson does all their work by Hand.
CNC machining is not an option because there is too much
Difference from one set of castings to the next.
3mph is pretty much the minimum gain. Guys have gained up to 11 mph
It’s a translation of your current drive condition from the factory.
Hull, and set up.
$5000 divided by a $70 hr. shop rate (just a guess)
71 hours = 35.5 hours of hand grinding and polishing per drive.
And the know-how of what they are doing from years of a proven track record.
It’s allot of money, and not for everyone.
You’re paying for knowledge, perfection, speed, and there services for bolt on speed.
Just my take on it and breaking it down
Jon
#66
Registered

Joined: Oct 2000
Posts: 1,254
Likes: 44
From: Toronto Canada
Cougarman does make an excellent spokesman , I think that after you spend the 5 k to blueprint the drive you still going spend big dough on different props . It's not only madness but a sickness but I am inflected so what can I say ( Break Out Another Thousand ) .
RG.
RG.



