Model Boat Mayhem

Mess Deck: General Section => Beginners start here...! => Topic started by: highvoltage on May 27, 2010, 09:37:22 pm

Title: Propeller size according to ship size?
Post by: highvoltage on May 27, 2010, 09:37:22 pm

I am starting a build. ULSTEIN SX121. I am doing it 1:48 scale so it will be approximately 8' long.

I am looking to get nozzles that house a 95mm prop. My question is will that be okay? Or could I get away will smaller props?

Thank you
John

Title: Re: Propeller size according to ship size?
Post by: dougal99 on June 01, 2010, 07:27:07 pm

I have a table, gleaned from one of the many modelling books I have read over the years, which suggests a 50mm prop for a 48 inch boat. Doubling up you get 100 mm for an 8ft boat, so 96 seems good. However, the table is for a single prop boat suggesting you could drop the diameter for a multi prop. How many are you fitting? What size props are fitted to the original?

HTH

Doug

Title: Re: Propeller size according to ship size?
Post by: boatmadman on June 01, 2010, 08:32:42 pm

John,

Looking forward to seeing the build.

Where did you get the plans?

Ian (part way into building a Bourbon Orca)

Title: Re: Propeller size according to ship size?
Post by: highvoltage on June 01, 2010, 09:33:16 pm

Quote from: dougal99 on June 01, 2010, 07:27:07 pm

I have a table, gleaned from one of the many modelling books I have read over the years, which suggests a 50mm prop for a 48 inch boat. Doubling up you get 100 mm for an 8ft boat, so 96 seems good. However, the table is for a single prop boat suggesting you could drop the diameter for a multi prop. How many are you fitting? What size props are fitted to the original?

HTH

Doug

There will be 2 mains. I ordered 100mm 4 blade props. So that should be good...

Title: Re: Propeller size according to ship size?
Post by: highvoltage on June 01, 2010, 09:34:40 pm

Quote from: boatmadman on June 01, 2010, 08:32:42 pm

John,

Looking forward to seeing the build.

Where did you get the plans?

Ian (part way into building a Bourbon Orca)

I just went off there website and made my own templets for the hall. It not going to look just like theres I adding my own flair to it.

Title: Re: Propeller size according to ship size?
Post by: boatmadman on June 01, 2010, 10:14:10 pm

John,

Dont know if you have seen my build thread, here:
http://www.modelboatmayhem.co.uk/forum/index.php?topic=17422.0

Ian

Title: Re: Propeller size according to ship size?
Post by: highvoltage on June 01, 2010, 11:21:35 pm

Yes sir. I saw you build. Actually I saw the post that said wierd hull design (or something like that). Then I saw a link to your build.

Your build is very nice. Thank you for sharing the photos.

Title: Re: Propeller size according to ship size?
Post by: highvoltage on June 02, 2010, 03:48:00 am

link to my project

http://www.modelboatmayhem.co.uk/forum/index.php?topic=24231.0