4-bladed prop needed for Saito 1.25
02-22-2008, 03:19 PM
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4-bladed prop needed for Saito 1.25
Okay, I've got a .60 sized P-51 that I'm building and putting a Saito 1.25 in and I'm looking to put a 4-bladed prop on there so that it'll look 'right'. Any ideas what size I should go with? I've been using that engine for the last year on a .60-.90 sized edge with a 16x6.
02-22-2008, 03:28 PM
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RE: 4-bladed prop needed for Saito 1.25
Hey, I used to go Phesant hunting near Grimes, IA!
A 4-blade prop looks nice on a P-51 while it's sitting on the ground, but 4-blade props are pretty inefficient in the air - That's why you rarely see them.
Sure, they work great on full-scale planes, but when you scale them down to the size we use, each blade gets lost in the wake of the blade in front of it.
Plus, since our engines turn much faster (Scale-wise) the prop would be a LOT smaller than a scale P-51 prop anyway.
What a lot of guys do is this: Buy a scale-size 4-blade prop for when the plane is on static display. Then switch to a flying prop for flight
A 4-blade prop looks nice on a P-51 while it's sitting on the ground, but 4-blade props are pretty inefficient in the air - That's why you rarely see them.
Sure, they work great on full-scale planes, but when you scale them down to the size we use, each blade gets lost in the wake of the blade in front of it.
Plus, since our engines turn much faster (Scale-wise) the prop would be a LOT smaller than a scale P-51 prop anyway.
What a lot of guys do is this: Buy a scale-size 4-blade prop for when the plane is on static display. Then switch to a flying prop for flight
02-22-2008, 04:00 PM
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RE: 4-bladed prop needed for Saito 1.25
And along with that you would also have to find a 4 blade spinner.
Although it is not impossible to find both to fit it will lack in performance.
A happy medium to consider may be a 3 blade prop?
Here is a conversion chart for 2,3 and 4 blades:
http://www.zingerpropeller.com/_2_blade_.htm
Although it is not impossible to find both to fit it will lack in performance.
A happy medium to consider may be a 3 blade prop?
Here is a conversion chart for 2,3 and 4 blades:
http://www.zingerpropeller.com/_2_blade_.htm
