Solas Prop
#5
the Solas for the AQ volvos were a labor of love for a man who has since passed away . An avid Donzi person and boater. Randy Carabelli "big grizzly" RIP.
I had done some testing for Randy and have run all of the size solas props he worked with them on developing.
The titan is now for sale from Solas but it is just a little different from the ones that Randy was selling.
they come in three different sizes and have very low slip numbers. the highest slip I had seen was 8% 7% was the avg slip number.
they come in 19 21 and 23 pitch but due to the effiencency and diameter over 15.5 inches wide the really perform like a 21 23 and a 25.
I can sum some things up for you. Using a 16 donzi for testing I achieved the most stable top end speed over many other props tested cleaver,chopper ultra,custom spinelli.
I would imagine you are running your nova right?
this is what I found on the 16 with a 310 hp 351w running 1.6 gears and a nose cone on a 21 solas to 4900 rpm this motor could not really turn a 23 . I have no info on the Nova hull, not sure if you are looking for alot of bow lift.
the best speed I got was 62.8 mph the boat was stable rock solid no ventilation,cavitation,chine walk. It was like a new boat compared to every other prop I had tried.
the prop is hooked to the water, even cutting the trottle back hard from WOT the boat acted like a chute was deployed no squierrly action just a quick controlled stop.
the prop carried the 16 well no excess stern or bow lift. The people who like alot of bow lift and really like to fly the nose probably won't like the flat ride attitude of the solas.
It also handled ( or didn't change in handling) rough water the ultra I had always blow out or ventilated in rougher water .
these results are pretty standard on a 16 or 18 classic and even a 20 cig that was volvo powered.
There should be some more detailed information on my testing on www.donzi.org search solas prop testing.
It was the first investment I made when I sold the 16 and got the hornet. I have a 23 solas waiting to be put on once the project is done.
Randy loved the story my wife told. I had lent the solas to a friend .she loved the way the boat rode with the solas she didn't get beat up. while my firend had the solas i put an ultra on the 16 my wife and I went for a ride, she noticed right away the boat was squierlly . she said why? I told her I lent the prop out. Her response go over to my friend give her the wrench she'll jump in to the lake and get the prop back.
So really the best testiment for the solas "a passenger who only really cares about where the sun is and working on her tan can tell you how well the solas handles." MISS YA RANDY
I had done some testing for Randy and have run all of the size solas props he worked with them on developing.
The titan is now for sale from Solas but it is just a little different from the ones that Randy was selling.
they come in three different sizes and have very low slip numbers. the highest slip I had seen was 8% 7% was the avg slip number.
they come in 19 21 and 23 pitch but due to the effiencency and diameter over 15.5 inches wide the really perform like a 21 23 and a 25.
I can sum some things up for you. Using a 16 donzi for testing I achieved the most stable top end speed over many other props tested cleaver,chopper ultra,custom spinelli.
I would imagine you are running your nova right?
this is what I found on the 16 with a 310 hp 351w running 1.6 gears and a nose cone on a 21 solas to 4900 rpm this motor could not really turn a 23 . I have no info on the Nova hull, not sure if you are looking for alot of bow lift.
the best speed I got was 62.8 mph the boat was stable rock solid no ventilation,cavitation,chine walk. It was like a new boat compared to every other prop I had tried.
the prop is hooked to the water, even cutting the trottle back hard from WOT the boat acted like a chute was deployed no squierrly action just a quick controlled stop.
the prop carried the 16 well no excess stern or bow lift. The people who like alot of bow lift and really like to fly the nose probably won't like the flat ride attitude of the solas.
It also handled ( or didn't change in handling) rough water the ultra I had always blow out or ventilated in rougher water .
these results are pretty standard on a 16 or 18 classic and even a 20 cig that was volvo powered.
There should be some more detailed information on my testing on www.donzi.org search solas prop testing.
It was the first investment I made when I sold the 16 and got the hornet. I have a 23 solas waiting to be put on once the project is done.
Randy loved the story my wife told. I had lent the solas to a friend .she loved the way the boat rode with the solas she didn't get beat up. while my firend had the solas i put an ultra on the 16 my wife and I went for a ride, she noticed right away the boat was squierlly . she said why? I told her I lent the prop out. Her response go over to my friend give her the wrench she'll jump in to the lake and get the prop back.
So really the best testiment for the solas "a passenger who only really cares about where the sun is and working on her tan can tell you how well the solas handles." MISS YA RANDY
Last edited by mattyboy; 04-01-2011 at 11:31 AM.
#6
sorry 2 more things to add. running my numbers on a prop calculator 4900 rpm 1.6 drive 21 pitch 62.8 mph gps would give the prop a -.031 slip number or prop GRIP????.
that's why I said to add 2 inches of pitch.
clean water if you give it a clean water flow like off a nose cone it will bite the **** out of the water.
that's why I said to add 2 inches of pitch.
clean water if you give it a clean water flow like off a nose cone it will bite the **** out of the water.
#9
mattyboy,
I don't have any experience with these props but I ran the numbers too.
Actually the slip with the 21 would be -3.12 not -.031. As you know, impossible.
With a 23P number the slip would be 5.85%, a incredible number and for that hull.
Were these props ever pitch read via computer aid?
I think there may be a tach, gear ratio or speed number slightly off.
However, sounds like the props run great.
Brett
I don't have any experience with these props but I ran the numbers too.
Actually the slip with the 21 would be -3.12 not -.031. As you know, impossible.
With a 23P number the slip would be 5.85%, a incredible number and for that hull.
Were these props ever pitch read via computer aid?
I think there may be a tach, gear ratio or speed number slightly off.
However, sounds like the props run great.
Brett
__________________
Brett Anderson / BBLADES Professional Propellers
920-295-4435 http://www.bblades.com/
[email protected]
Brett Anderson / BBLADES Professional Propellers
920-295-4435 http://www.bblades.com/
[email protected]
#10
I know very little about Solas boat props.
I know that when I was racing stock class jetski's (1200cc pro-stock class) that the Solas props were the hot ticket for both speed and acceleration.
Dr. Solas manufactures some of the finest supertanker props in the world...saving shipping companies literally thousands of dollars because of the increased efficiency of his props.
I have never tried any of his boat props...but would guess from my jetski experiences (a lot) that they are probably quite efficient.
Chris
I know that when I was racing stock class jetski's (1200cc pro-stock class) that the Solas props were the hot ticket for both speed and acceleration.
Dr. Solas manufactures some of the finest supertanker props in the world...saving shipping companies literally thousands of dollars because of the increased efficiency of his props.
I have never tried any of his boat props...but would guess from my jetski experiences (a lot) that they are probably quite efficient.
Chris



