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Author Topic:   extra long shaft (25") on a 20" transom
dreamer posted 02-17-2004 08:24 PM ET (US)   Profile for dreamer   Send Email to dreamer  
Has anyone experienced torqueing when using a ex. long shaft on a 20" transom? My thinking is that by raising the powerhead up 5" may possibly create a problem because the center of gravity is higher.
What are other downsides?
Sal DiMercurio posted 02-17-2004 08:50 PM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
Dream, you will need a jack plate to go up 5".
Just what boat are you thinking of doing this to because anything 20' or above is already a 25" transom.
I wouldn't even worry for 1 second about the center of gravity as 5" isn't going to change it very much.
dreamer posted 02-17-2004 09:04 PM ET (US)     Profile for dreamer  Send Email to dreamer     
My boat is a 19'Revenge. I was looking at the optimax 150 advertised on "Marketplace". It has a Ex.Long shaft.
I remember in 1960, I raced the 1960 Merc-80 on a 17' "H" class Javelin and had a problem with the boat torqueing. I also jacked up the motor with aluminum plates till the cavitation plate on the lower unit was flush with the bottom of the boat.
I could save a bunch of money with this motor, instead of buying the Suzuki DF140 like I planned to. But, I did not want to experience a bad or compromised ride...
Sal DiMercurio posted 02-17-2004 09:10 PM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
Ha, small world, I also ran a 17 Jav with a merc 80 in 59, 60, & 61.
Keep in mind the Jav was plywood less then 1/4" & weighed "MAYBE" 4 - 500 lbs, your 19 revenge probably pushes 2,000 lbs.
I wouldn't be concerned at all.
dreamer posted 02-17-2004 11:00 PM ET (US)     Profile for dreamer  Send Email to dreamer     
Holy Smokes!!
We might know each other..I thought I had the fastest fishing boat on the delta in those days! I raced out of Stockton, Ca. Tore the saddles right off trying to jump a tug boat wave just north of Sacto. on the 2 day Stockton-Colusa Marathon!! in 61 or 62.
I bet I know where you got your Javelin! "one-eye" in Stockton copied the measurements off of Jack Wards boat and punched out a bunch of them!! Jack held the worlds record for speed in outboards, I believe he was running a beefed-up Merc-78.
Raced my hopped-up "harley" out of Kingdom drag strip, I got tore-up there too. An old timer by the name of James "Red" Craig out of Stockton built the bike up for me...
Limpin, black-eyes and front teeth knocked-out in a bar-room brawl, I met this fine young lady in a dental office, she saw me walk in and started laughing and didn't stop laughing - I figure if someone laughs that hard and long at me she must like me!! I married her - She straighted me out real quick. Been running pretty straight ever since.

Got out of the military in '59 found a job and went straigt out and bought me a "harley" and a racing boat and proceeded to conquer the world!! (or kill myself)..
Let's get together and "talk" some old "walk"..


Sal DiMercurio posted 02-18-2004 01:21 AM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
Doug, i'm just 30 miles west of Stockton in Pittsburg.
I raced in the Stockton regatta a few times, ran a full race blown custom flatbottom, Keith Black hemi.
Ladd built the boat there in stockton.
My mechanic was John Aricaldi.
We were bouy racing & were in the lead [ boat was one fast sob ], the sheriffs dept at the other end of the coarse went on the coarse to run a boat off, we were doing over 100 mph & didn't expect a wake from anyone, went airborn & came down flat & blew the bottom open, ripped off the deck & took me out with it like a valcano exploding, broke my arm, shoulder & a couple ribs, rolled about 1/4 mile at 100 mph, my parents were listening to the race & the goofy radio anouncer says for sure I was killed.
A long story short, i'm still here 44 years later.
I'll bet we raced against each other in the stockton colusa race, did it twice right around then.
I owned the Jav & my buddy [ Dave Keopsel ] owned Western Auto & hardware here in Pittsburg & bought the 80 hp merc & sold Javelins, we ran as a team.
That Jav flew, also owned a "Premier" & raced it.
I dated about 20 gals from Stockton so I was always there, loved "On loc sams" & little Italy.
Fished with Ernie Mancuso & Tom Milano from Stockton.
Kept a fishing boat at King Island, was on Bell Langs tv show many times for winning bass derbies.
Do you still live there?
Do you ever go to Waterloo to eat?
My sister-inlaw owns the Waterloo, great pesto & ribs.
Lived with some gal on Persing Blv for a while until the peat dust drove me west.
Whew, allergies big time.
Guess were about the same age.
Played footbal against Amos Alonso Stagg high in practice games in 54 & 55.
Sal DiMercurio posted 02-18-2004 01:40 AM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
In 1960 I had Keith Black build me a full race Chrysler hemi, I asked him what kind of gauranty I got for a $10,000 engine, he said 30 seconds at 11,000 rpms & 2,000 hp.
Engine never saw gasoline, only nitro.
Man those were absolutly crazy days until my buddy came apart at 180 mph just before I was supposed to run in the 1/4 mile at Oakland.
My best speed was 196.56 mph in the 1/4, Macs was 204 & the world record [ same exact engine, boat & fuel ],......I sold everything the same year & never raced the big boats again.
My outboard [ Premier ] was faster then my Jav because it was much skinnier & didn't catch the wind like the Jav once she got on it.
dreamer posted 02-18-2004 12:17 PM ET (US)     Profile for dreamer  Send Email to dreamer     
All I can say is "it's a small world". The answer to your questions is Yes, Yes, Yes and Yes.
I never did get to meet any of the famous football players that hung-out at Waterloos though.
I went to Edison-Hi, played football against "Stag" '54
and '55. You must have went to Stockton-Hi.
I live in San Jose now, been here for over 35yrs. with the exception of about 4 yrs. when we went out of state for college, but I have always gone back to Stockton to vist and fish with my old racing and riding buddies - and believe or not we would end up at "Waterloos", "On loc Sams", "Little Italys" or "David Wongs" for dinner afterwards.

Let's communicate through our emails as jimh might get annoyed at us.


Sal DiMercurio posted 02-18-2004 01:53 PM ET (US)     Profile for Sal DiMercurio  Send Email to Sal DiMercurio     
Your right, sorry Jim.
Doug, my e-mail is

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