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prop size for Rascala
Posted: 08 May 2013, 19:19
by RightyO
I am looking for ideas on what prop size i will need for Rascala.It will be running a 253 holden rear mount and a haynes hellier direct drive 11% box.I was thinking about 11 dia 13deg Lh.I would appreciate any ideas.I have fitted a new 1" shaft and the motor and box are setup.It has been painted red and has black edging around the new varnished deck.
Ken.
Re: prop size for Rascala
Posted: 13 May 2013, 09:30
by hookster
Any photos Ken? You certainly move pretty quick on those boats!!! I assume someone has PM'd you re prop size? Hope so...cheers, Jon.
Re: prop size for Rascala
Posted: 13 May 2013, 15:33
by RightyO
Jon i had no feedback on the prop as yet .I have just taken the bucket seats over to Colac to have them re done.I put in a lot of hard yards to get the painting done before it got to cold but slowing up now as i think i will be able to make the November deadline.I will send some photos to Greg to post on line.The trip over to South Australia cot the motivation going.
Ken.
Re: prop size for Rascala
Posted: 13 May 2013, 20:13
by screwit
Ring Nankervis In Bendigo 0354394925 , they will be able to tell you what size you need, They have been in race boats since the 50s.
They are great to talk to.
Ross
Re: prop size for Rascala
Posted: 13 May 2013, 20:41
by Darren
Ken
It's great to see the wheels are are grinding forward, Rascala is a great project.
I am embarrassed to admit I saw it racing....it was a great view from the pram LOL
Any now, for what its worth, I have a tiny engine in a big boat with Steinway (17.5ft)
running 11% gears with an auto trans sucking horsepower (but reverse is worth it)
and the number is 11 x 11 Which give me 50 mph with a tailwind at 5100 ish rpm.
Methinks you could easily spin 11x13 depending on how healthy the engine is.
Darren
Re: prop size for Rascala
Posted: 20 May 2013, 10:43
by RightyO
Just trying to ad photo hope it works.
Ken
Re: prop size for Rascala
Posted: 20 May 2013, 15:31
by Greg
Well Ken, it worked and the boat is looking good. I'm impressed with the hull rests, too.
Re: prop size for Rascala
Posted: 20 May 2013, 16:54
by Bob Vic
I wonder what the load rating is for one of those crates. Must look it up on the Google machine.
Bob
Re: prop size for Rascala
Posted: 20 May 2013, 17:05
by Thommo
Nice work Ken
Re: prop size for Rascala
Posted: 20 May 2013, 20:15
by RightyO
Bob as you can see it past the milk crate test the front one developed a v shape but survived.I worked for test engineering for 30 years and the tensile test machine had a sign on it (one test is worth a thousand expert opinions)They past ok.
Ken