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9.9 High Thrust vs. 15hp outboard
I own a 22' Grady White with a 225 Yamaha. I need to replace the old
kicker. This engine main purpose is to get me home if the main one breaks down. I was told that the 4 stroke 9.9hp High Thrust is a better outboard choice than the 15hp. I cannot understand why an engine that has 33% more hp would be not one to choose. Is the 9.9 High Thrust the best choice? Jim |
"Jim and Anna" wrote in message news:jeuvd.59591$Af.2707@fed1read07... I own a 22' Grady White with a 225 Yamaha. I need to replace the old kicker. This engine main purpose is to get me home if the main one breaks down. I was told that the 4 stroke 9.9hp High Thrust is a better outboard choice than the 15hp. I cannot understand why an engine that has 33% more hp would be not one to choose. Is the 9.9 High Thrust the best choice? Jim The high thrust is the best choice. The 9.9 may not be. I run a Yamaha T-8 high thrust on my 3400# aluminum jet boat. Get hull speed (6.5 mph) at about 3/4 thottle. The 15 Mariner that it replaced would only get me about 5.5 at full throttle. The motors are designed to move sailboats and displacement hulls at a lower speed. The T-8 and I think the 9.9 both have 25 hp gear cases, with lower gears. They now have the clearance to run a bigger diameter, low pitch prop. This keeps the prop from cavitating and moves the boat better than a small prop with a lot of slippage. As to the 9.9 and T-8, the T-8 has power tilt. You can also get it with remote throttle. I love not having to reach over and lift the kicker on the OMC bracket. I now have a fixed bracket and just push the button to tilt the motor. Is the extra long shaft (25" it think). Mine was about $2300 2 years ago. I think the big Yamaha dealer in Florida sold them at about that price, no tax and about $90 shipping. They may make a 9.9 power tilt now. |
"high thrust" means the prop turns slower, nothing more.
Horsepower, on the other hand, MEANS thrust multiplied by rpm. you are right, hp is hp and 15 of 'em is more than 9.9 of 'em. "high thrust" vs hp is the old sales technique, "If you can't dazzle them with brilliance, baffle them with bull****." hp is hp. I own a 22' Grady White with a 225 Yamaha. I need to replace the old kicker. This engine main purpose is to get me home if the main one breaks down. I was told that the 4 stroke 9.9hp High Thrust is a better outboard choice than the 15hp. I cannot understand why an engine that has 33% more hp would be not one to choose. Is the 9.9 High Thrust the best choice? Jim |
I bought the Honda 9.9 a year or so ago. An acquaintance advised me to
not by the high thrust model, but to buy the high thrust prop only. (Maybe Honda calls it Power Thrust) By doing so I saved about $75 as I recall. The only difference? I didn't get the "Power Thrust" decal on the cowling. And I'm ahead by one standard prop which is my spare. Maybe Yamaha's marketing of the bigger prop is as silly as Honda's? Dale |
a non-sense answer, billie. however, no more than what can be expected of you.
Date: 12/14/2004 10:31 AM Eastern Standard Time Message-id: On 14 Dec 2004 13:23:48 GMT, (JAXAshby) wrote: "high thrust" means the prop turns slower, nothing more. Horsepower, on the other hand, MEANS thrust multiplied by rpm. you are right, hp is hp and 15 of 'em is more than 9.9 of 'em. "high thrust" vs hp is the old sales technique, "If you can't dazzle them with brilliance, baffle them with bull****." hp is hp. I own a 22' Grady White with a 225 Yamaha. I need to replace the old kicker. This engine main purpose is to get me home if the main one breaks down. I was told that the 4 stroke 9.9hp High Thrust is a better outboard choice than the 15hp. I cannot understand why an engine that has 33% more hp would be not one to choose. Is the 9.9 High Thrust the best choice? Jim Which would do a better job of moving a heavy barge at 4 knots a.) a 1000 hp tug boat b.) a 1000 hp cigarette boat BB |
You can only put so much diameter prop on the leg. The High Thrust have a
bigger area for prop and the gear it down so it turns the bigger prop slower. Less slip. wrote in message oups.com... I bought the Honda 9.9 a year or so ago. An acquaintance advised me to not by the high thrust model, but to buy the high thrust prop only. (Maybe Honda calls it Power Thrust) By doing so I saved about $75 as I recall. The only difference? I didn't get the "Power Thrust" decal on the cowling. And I'm ahead by one standard prop which is my spare. Maybe Yamaha's marketing of the bigger prop is as silly as Honda's? Dale |
Jaxass, you be quiet, you do not have a clue about anything! What happens
if you put a 250 HP O/B with a small surface piercing prop on the boat. Good kicker? Lots more HP! "JAXAshby" wrote in message ... billie, be quiet. you don't have a clew what the relationship is between horsepower and thrust. knock it off. the guy asked a valid question and you want to babble on like you are on your 5th beer. From: "Calif Bill" Date: 12/14/2004 12:08 AM Eastern Standard Time Message-id: t "Jim and Anna" wrote in message news:jeuvd.59591$Af.2707@fed1read07... I own a 22' Grady White with a 225 Yamaha. I need to replace the old kicker. This engine main purpose is to get me home if the main one breaks down. I was told that the 4 stroke 9.9hp High Thrust is a better outboard choice than the 15hp. I cannot understand why an engine that has 33% more hp would be not one to choose. Is the 9.9 High Thrust the best choice? Jim The high thrust is the best choice. The 9.9 may not be. I run a Yamaha T-8 high thrust on my 3400# aluminum jet boat. Get hull speed (6.5 mph) at about 3/4 thottle. The 15 Mariner that it replaced would only get me about 5.5 at full throttle. The motors are designed to move sailboats and displacement hulls at a lower speed. The T-8 and I think the 9.9 both have 25 hp gear cases, with lower gears. They now have the clearance to run a bigger diameter, low pitch prop. This keeps the prop from cavitating and moves the boat better than a small prop with a lot of slippage. As to the 9.9 and T-8, the T-8 has power tilt. You can also get it with remote throttle. I love not having to reach over and lift the kicker on the OMC bracket. I now have a fixed bracket and just push the button to tilt the motor. Is the extra long shaft (25" it think). Mine was about $2300 2 years ago. I think the big Yamaha dealer in Florida sold them at about that price, no tax and about $90 shipping. They may make a 9.9 power tilt now. |
P. T. Barnum would love ya, dood.
You can only put so much diameter prop on the leg. The High Thrust have a bigger area for prop and the gear it down so it turns the bigger prop slower. Less slip. wrote in message roups.com... I bought the Honda 9.9 a year or so ago. An acquaintance advised me to not by the high thrust model, but to buy the high thrust prop only. (Maybe Honda calls it Power Thrust) By doing so I saved about $75 as I recall. The only difference? I didn't get the "Power Thrust" decal on the cowling. And I'm ahead by one standard prop which is my spare. Maybe Yamaha's marketing of the bigger prop is as silly as Honda's? Dale |
billie, attempting rational discussion with you is a useless as attempting such
with dog pile jeggies. what a waste of good oxygen. From: "Calif Bill" Date: 12/14/2004 1:39 PM Eastern Standard Time Message-id: t Jaxass, you be quiet, you do not have a clue about anything! What happens if you put a 250 HP O/B with a small surface piercing prop on the boat. Good kicker? Lots more HP! "JAXAshby" wrote in message ... billie, be quiet. you don't have a clew what the relationship is between horsepower and thrust. knock it off. the guy asked a valid question and you want to babble on like you are on your 5th beer. From: "Calif Bill" Date: 12/14/2004 12:08 AM Eastern Standard Time Message-id: t "Jim and Anna" wrote in message news:jeuvd.59591$Af.2707@fed1read07... I own a 22' Grady White with a 225 Yamaha. I need to replace the old kicker. This engine main purpose is to get me home if the main one breaks down. I was told that the 4 stroke 9.9hp High Thrust is a better outboard choice than the 15hp. I cannot understand why an engine that has 33% more hp would be not one to choose. Is the 9.9 High Thrust the best choice? Jim The high thrust is the best choice. The 9.9 may not be. I run a Yamaha T-8 high thrust on my 3400# aluminum jet boat. Get hull speed (6.5 mph) at about 3/4 thottle. The 15 Mariner that it replaced would only get me about 5.5 at full throttle. The motors are designed to move sailboats and displacement hulls at a lower speed. The T-8 and I think the 9.9 both have 25 hp gear cases, with lower gears. They now have the clearance to run a bigger diameter, low pitch prop. This keeps the prop from cavitating and moves the boat better than a small prop with a lot of slippage. As to the 9.9 and T-8, the T-8 has power tilt. You can also get it with remote throttle. I love not having to reach over and lift the kicker on the OMC bracket. I now have a fixed bracket and just push the button to tilt the motor. Is the extra long shaft (25" it think). Mine was about $2300 2 years ago. I think the big Yamaha dealer in Florida sold them at about that price, no tax and about $90 shipping. They may make a 9.9 power tilt now. |
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