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View Full Version : paddlewheels how large should each blade be



jeffery
06-25-2000, 12:37 PM
I've studyed paddle wheels for a couple of years now and have not found a formula for housepower to blade/paddle/buckit size? Thankyou for your help
Jeff Bybee

jeffery
06-25-2000, 12:37 PM
I've studyed paddle wheels for a couple of years now and have not found a formula for housepower to blade/paddle/buckit size? Thankyou for your help
Jeff Bybee

jeffery
06-25-2000, 12:37 PM
I've studyed paddle wheels for a couple of years now and have not found a formula for housepower to blade/paddle/buckit size? Thankyou for your help
Jeff Bybee

Nathan
07-05-2000, 11:49 AM
Jeff try this site http://www.wirefire.com/gemort/harbor/ The guy's a ME who's designed six paddle boats and addresses the size/power required for a paddler wheeler.

Nathan
07-05-2000, 11:49 AM
Jeff try this site http://www.wirefire.com/gemort/harbor/ The guy's a ME who's designed six paddle boats and addresses the size/power required for a paddler wheeler.

Nathan
07-05-2000, 11:49 AM
Jeff try this site http://www.wirefire.com/gemort/harbor/ The guy's a ME who's designed six paddle boats and addresses the size/power required for a paddler wheeler.

MikeGardner
10-13-2000, 10:20 AM
Bad Link....anyone find it yet?

MikeGardner
10-13-2000, 10:20 AM
Bad Link....anyone find it yet?

MikeGardner
10-13-2000, 10:20 AM
Bad Link....anyone find it yet?

htom
10-13-2000, 04:28 PM
Don't see it anywhere. http://media4.hypernet.com/~dick/ubb/frown.gif

Most of the paddlewheel stuff seems to be on steamboating pages, and most of those seem to be more likely to be launches than paddlers. Some of these may help:
http://www.steamboating.com/contents.html

steamboating web ring (watch your ears) --
http://www.pcez.com/~artemis/HSWRwebsites.htm

htom
10-13-2000, 04:28 PM
Don't see it anywhere. http://media4.hypernet.com/~dick/ubb/frown.gif

Most of the paddlewheel stuff seems to be on steamboating pages, and most of those seem to be more likely to be launches than paddlers. Some of these may help:
http://www.steamboating.com/contents.html

steamboating web ring (watch your ears) --
http://www.pcez.com/~artemis/HSWRwebsites.htm

htom
10-13-2000, 04:28 PM
Don't see it anywhere. http://media4.hypernet.com/~dick/ubb/frown.gif

Most of the paddlewheel stuff seems to be on steamboating pages, and most of those seem to be more likely to be launches than paddlers. Some of these may help:
http://www.steamboating.com/contents.html

steamboating web ring (watch your ears) --
http://www.pcez.com/~artemis/HSWRwebsites.htm

Henri
10-14-2000, 01:55 PM
Jeff, my thoughts: Go into Dave Gerr's book titled PROPELLERS and find the formula for blade pressure. Decide what blade pressure is appropriate for your boat and intended function. Figure your slip on the high side to be safe, based again on your boat and intended function. Set your immersed blade area on this basis. Then play with your final drive ratio (ie chain or belt drive) to get the max speed or whatever characteristic you are pursuing.

Henri
10-14-2000, 01:55 PM
Jeff, my thoughts: Go into Dave Gerr's book titled PROPELLERS and find the formula for blade pressure. Decide what blade pressure is appropriate for your boat and intended function. Figure your slip on the high side to be safe, based again on your boat and intended function. Set your immersed blade area on this basis. Then play with your final drive ratio (ie chain or belt drive) to get the max speed or whatever characteristic you are pursuing.

Henri
10-14-2000, 01:55 PM
Jeff, my thoughts: Go into Dave Gerr's book titled PROPELLERS and find the formula for blade pressure. Decide what blade pressure is appropriate for your boat and intended function. Figure your slip on the high side to be safe, based again on your boat and intended function. Set your immersed blade area on this basis. Then play with your final drive ratio (ie chain or belt drive) to get the max speed or whatever characteristic you are pursuing.

Henri
10-21-2000, 09:01 AM
Phil Bolger's MADELINE human powered paddle boat is featured in one or more of the Payson books, and there's a statement in there to the effect that "PB got the paddle size and dip just right". This boat is said to be capable of 7k with two men on the crankshaft. Two men put out about 370-400 watts continuous power at about 90rpm at the crankshaft. Another reference I have seen is to figure 1/4hp per man. You should be able to scale from the PB design. I would think the lower the blade pressure, the better and the higher the effeciency.

Henri
10-21-2000, 09:01 AM
Phil Bolger's MADELINE human powered paddle boat is featured in one or more of the Payson books, and there's a statement in there to the effect that "PB got the paddle size and dip just right". This boat is said to be capable of 7k with two men on the crankshaft. Two men put out about 370-400 watts continuous power at about 90rpm at the crankshaft. Another reference I have seen is to figure 1/4hp per man. You should be able to scale from the PB design. I would think the lower the blade pressure, the better and the higher the effeciency.

Henri
10-21-2000, 09:01 AM
Phil Bolger's MADELINE human powered paddle boat is featured in one or more of the Payson books, and there's a statement in there to the effect that "PB got the paddle size and dip just right". This boat is said to be capable of 7k with two men on the crankshaft. Two men put out about 370-400 watts continuous power at about 90rpm at the crankshaft. Another reference I have seen is to figure 1/4hp per man. You should be able to scale from the PB design. I would think the lower the blade pressure, the better and the higher the effeciency.