RE: 1/8 scale functional Hamilton Standard hub for RCV SP engines.

RE: 1/8 scale functional Hamilton Standard hub for RCV SP engines.
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All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> RE: 1/8 scale functional Hamilton Standard hub for RCV SP engines.

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RE: 1/8 scale functional Hamilton Standard hub for RCV... - 1/28/2008 1:41:38 AM

Tommy_Gun

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From: Ione, CA, USA
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I'm with you Klaatu,

As someone who has worked in shops doing the overhaul and repair of full scale aircraft propellers, I am a bit hesitant to go near this type of prop until some further testing and proving has been done.

The idea of a blade departing the hub and the possibility for injury sends a chill up my spine.

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Post #: 26

RE: 1/8 scale functional Hamilton Standard hub for RCV ... - 1/28/2008 4:06:50 AM

Michael211

Posts: 304
Joined: 9/11/2005
From: Splendora, TX, USA
Status: offline

Josh, that's awesome! Put me on your list of very interested parties please! I'm working on a 60 sized Mustang right now (with my 1st RCV 90SP engine), but I also intend to do a H9 Corsair later this summer with another RCV 90SP. I just got my 1st test run on this SP engine today and it was fanatastic! 8-)

When you have a firm estimate of the cost please let me know. The hub looks really great!

- Michael

(in reply to Juice)

Post #: 27

RE: 1/8 scale functional Hamilton Standard hub for RC... - 1/28/2008 4:13:06 AM

Juice

Posts: 843
Joined: 2/12/2002
From: Richmond Hill, ON, CANADA
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77chickenhawk...

Designing new props is a much harder project, I think, than making prop hubs. There are so many variables to the design of a prop. Just to mention a few, there's blade width, airfoil, and pitch. And all three of those may change down the length of the prop. It's a trial and error process that is time consuming and expensive.

And if someone were to make a big 19" prop and put it on a 12C VarioPROP hub that was designed for a maximum 13.9" prop (for a gas/glow engine), they're asking for trouble.

All that being said, I think a 4-blade 12C VarioPROP hub with 13.9" props would work nice for my little P-51 Mustang powered by my RCV-60SP.

Klaatu...

I just looked up what MTBF means... "Mean Time Between Failures".

I wonder also. I've only read about one Soloprop failure a couple years ago when they were new. I haven't read about any other Soloprop failures since.

Juice

(in reply to Tommy_Gun)

Post #: 28

RE: 1/8 scale functional Hamilton Standard hub for RC... - 1/28/2008 4:30:30 AM

Juice

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Joined: 2/12/2002
From: Richmond Hill, ON, CANADA
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Welcome to the thread Michael.

The hub I'm making is a 3-blade hub which will not look right on a Mustang. A 4-blade hub cannot get any smaller than the original Soloprop 4-blade hub, so there's no need for a re-design. So get the 4-blade hub directly from Soloprop and it should fit nicely under a big 4" spinner.

The H9 Corsair with an RCV 90SP is the combo I have, and it is the inspiration for this hub project.

Josh

(in reply to Juice)

Post #: 29

RE: 1/8 scale functional Hamilton Standard hub for RC... - 2/7/2008 5:00:09 PM

Juice

Posts: 843
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From: Richmond Hill, ON, CANADA
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Second quote:

CNC shop B:
"Over $1000" [for one].

Again... too much.

I've exhausted all the leads given to me by others in the RC hobby. Next step is to start cold-calling local CNC shops.

Josh

(in reply to Juice)

Post #: 30

RE: 1/8 scale functional Hamilton Standard hub for RCV... - 2/7/2008 6:17:25 PM

bla bla

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From: Oslo, NORWAY
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Not wanting to sound like a party pooper but isn't it all a bit much for a .60 AFT sports semi scale model?
By the time you've had another hub machined privately or made by Solo, it'll have cost you 10x the cost of the original model.
Even then, nobody will really notice because its a small hobby plane. That'll perform even worse than just having a normal 2 blade prop unfortunately.

Why not save all you money and energy and channel it into building a real decent large real scale model where the whole issue´isn't an issue if you get may drift.

< Message edited by bla bla -- 2/7/2008 6:19:04 PM >

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Post #: 31

RE: 1/8 scale functional Hamilton Standard hub for RCV... - 2/7/2008 6:42:47 PM

mimoore67

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From: Brooklyn, MI, USA
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Juice,

I sent you a PM, my brother-in-law owns a Tool and Die shop! He said he would talk to you!

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Post #: 32

RE: 1/8 scale functional Hamilton Standard hub for RCV... - 2/7/2008 6:44:45 PM

Whistling Death

Posts: 1006
Joined: 3/1/2006
From: Alexander City, AL, USA
Status: online

quote:

ORIGINAL: bla bla

Not wanting to sound like a party pooper but isn't it all a bit much for a .60 AFT sports semi scale model? No
By the time you've had another hub machined privately or made by Solo, it'll have cost you 10x the cost of the original model. 10 times, I don't think so.
Even then, nobody will really notice because its a small hobby plane. Do people at your field have bad eyes?
That'll perform even worse than just having a normal 2 blade prop unfortunately. An RCV engine will swing that prop with no problem.

Why not save all you money and energy and channel it into building a real decent large real scale model where the whole issue´isn't an issue if you get may drift. Not really.

I can answer these because I have the same set up.
And after all, what difference does it make if he wants to put a high dollar spinner on his plane?

< Message edited by BBOwen -- 2/7/2008 6:45:41 PM >

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Post #: 33

RE: 1/8 scale functional Hamilton Standard hub for RCV... - 2/7/2008 8:49:12 PM

Juice

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From: Richmond Hill, ON, CANADA
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bla bla...

Thank you for your opinion. You're not the first person I've talked to that made those kind of comments on RCU and at my club. Believe me, I understand what you are saying and I don't take offence to it.

This hobby is full of useless over-kill... .40 size airplanes with huge over-powered engines... .25 size combat planes with mini retractable landing gear... Adding flaps on an airplane that already floats in on landing... I can go on and on. This project is just another example.

I actually can afford to blow $1G to get one made, but I'm not crazy. In my moments of weakness and stupidity, I've blown more money on other things not as cool and not RC-related (but that's not the point, and I'm not proud of that).

The point is... You should always strive to do whatever you do better. Not just in RC, but in everything in life. For you, if better means bigger, then go bigger. For me, my little condo and my little car won't fit bigger airplanes. For me, better means "put on an engine that can turn a big prop", or "put functioning oleo struts on the landing gear", or... "build a 3-bladed hub with ground-adjustable pitch". Now if that ain't cool, what is?! This is how I choose to channel my energy.

If a miracle happens and someone is willing to make the hub for $100 each, then YAY for us. Otherwise, there's actually nothing lost.

Josh

(in reply to bla bla)

Post #: 34

RE: 1/8 scale functional Hamilton Standard hub for RCV... - 2/7/2008 9:02:43 PM

saramos

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From: Northridge, CA, USA
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Well said!

(in reply to Juice)

Post #: 35

RE: 1/8 scale functional Hamilton Standard hub for RC... - 2/8/2008 2:03:09 AM

David010567

Posts: 118
Joined: 10/9/2002
From: Victorville, CA, USA
Status: online

Hey Juice,

I don't normally post my opinions but reading your last post made me think. Don't get me wrong... I think your nuts

But hey... I love BF-109's and my buddies come over and say I have way too many. I think I could keep building 109's for the rest of my life and never run out of schemes or models (E-F-G & K's).

When it gets right down to it... You gotta do what you love and what your passions are. If big 3 or 4 bladed props on your .60 size plane is what your passion is... You have my admiration.

(in reply to saramos)

Post #: 36

RE: 1/8 scale functional Hamilton Standard hub for RC... - 2/8/2008 2:09:03 AM

Juice

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From: Richmond Hill, ON, CANADA
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quote:

Don't get me wrong... I think your nuts

I actually take that as a compliment.

(in reply to David010567)

Post #: 37

RE: 1/8 scale functional Hamilton Standard hub for RC... - 2/8/2008 4:08:16 AM

kahloq

Posts: 1608
Joined: 1/1/2006
From: Fort Collins, CO, USA
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quote:

ORIGINAL: David010567

Hey Juice,

I don't normally post my opinions but reading your last post made me think. Don't get me wrong... I think your nuts But hey... I love BF-109's and my buddies come over and say I have way too many. I think I could keep building 109's for the rest of my life and never run out of schemes or models (E-F-G & K's).

We have a lot in common in the r/c world.

My favorite plane is the ME-109 as well. I have several of them and plan on more in the future.

(in reply to David010567)

Post #: 38

RE: 1/8 scale functional Hamilton Standard hub for RC... - 2/8/2008 4:39:47 AM

Whistling Death

Posts: 1006
Joined: 3/1/2006
From: Alexander City, AL, USA
Status: online

I think we are all nuts.

Well, I know we are

but it's ok. I have an E-Flite Taylorcraft and I was thinking of putting a 5 bladed ceiling fan on front and doing low highspeed passes towing a pinata so guys could take a swat at it as it passed by.
Not to mention a pair of those chrome balls hanging from the back of my H-9 P-47.