Giant Scale RCV ??  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> RCV Engines Support >> Giant Scale RCV ??
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Giant Scale RCV ?? - 10/21/2003 6:24:51 PM   
dmyers0403


 

Posts: 346
Joined: 5/30/2002
From: Muldrow, OK, USA
Status: online 		Any consideration being made by rcv for giant scale planes, such as 2.0 or larger ?? Wishful thinking?? Sure would be nice to have something that fit in the cowl.
I have a 58 and a 120 both are nice engines but most of my stuff needs larger engines. Love the gas but they sure cut up a cowl.
       Post #: 1

RE: Giant Scale RCV ?? - 10/22/2003 3:41:44 PM   
RCV Engines


 

Posts: 509
Joined: 4/11/2002
From: WimborneDorset, UNITED KINGDOM
Status: offline 		One day .............

To be honest we have no current plans at the moment, but we would certainly consider going larger in the future. We have the 96CD which should be available in the next 3 months and after that we will most likely be producing a 150CD (which does comes nearer to your mark).
With regard to larger than the 150CD, I would recommend keeping an eye on the RCV website and the modelling press over the next few years.

It is great to hear that you are happy with your other RCV engines and hope that we will be able to help you out with your large scale models in the future.

Best regards
Laurenne


_____________________________

Technical Support
RCV Engines - UK

(in reply to dmyers0403)
       Post #: 2

RE: Giant Scale RCV ?? - 10/27/2003 8:37:10 PM   
Juice



Posts: 860
Joined: 2/12/2002
From: Richmond Hill, ON, CANADA
Status: offline 		Here's another vote for a larger than 1.20 SP-series engine. I want to turn a 20" 3-blade prop! You'd probably have to partner with a prop maker who can make those functional props.

Is there any chance that RCV could produce a gas-powered engine?

Juice

(in reply to dmyers0403)
       Post #: 3

RE: Giant Scale RCV ?? - 10/28/2003 8:22:00 AM   
RCV Engines


 

Posts: 509
Joined: 4/11/2002
From: WimborneDorset, UNITED KINGDOM
Status: offline 		At the moment we do not have any plans to produce a larger SP series engines, with one of the main reasons for this being prop size. Apart from the availability of such large prop sizes, there may not be much scope for 2-bladed propellers due to ground clearance.
This may limit the market too much.

I will pass on your comments to our development team though, including the requirement for a gas powered engine.

Thanks for your interest
Best regards
Laurenne


_____________________________

Technical Support
RCV Engines - UK

(in reply to Juice)
       Post #: 4

RE: Giant Scale RCV ?? - 5/22/2008 7:11:54 AM   
Aluminum Overcast


 

Posts: 79
Joined: 9/12/2007
From: Waterford, MI, USA
Status: offline 		Bring on the big RCV SP! Bring on something to power a 150 sized model or even a quarter scale would be ideal....I'm sure I'm not alone in the following statement: I just hate the sound of single or twin gas engines which always seem to sound either like a chain saw, lawn mower, or dirt bike. Nothing comes close to a four stroke for sound!

In addition to the discerning scale builder and with the proliferation of larger ARF warbirds and scale aircraft of all types modeler interested in this portion of the hobby is greater than ever before. Proof that the rest of the industry realize that can be seen by the countless introductions of larger and more scale arfs on almost a daily basis. Someone is buying those models and powering them with something. Even Saito just came out with a much larger gas powered four stroke. Why not a larger RCV? It just makes scents.


Most of the guys here want a larger engine to put into larger warbirds with scale multi blade of 3, 4 or more configurations..... a too big two blade isn't really the issue. Simply put, Guys don't buy RCV's for any reason other than the idea of hiding the engine completely within the cowl and swing a scale prop...both in terms of prop diameter and number of blades. Period.

As far as availability of props. There are plenty of composite manufacturers of 3 blades used mostly on the IMAC circuit turned by DA 50s and up but an even better alternative for the scale enthusiast is a company called Solo props who will make any size, shape and number of blades you may wish and with their ingenious adjustable pitch setting hub your are golden. I have one for my KMP Spitfire and love it. The adjustable hub also helps produce a fly wheel effect which seems to smooth out the RCV idle. My plane is due to fly fairly soon but I'm fabricating a functioning scale exhaust that has taken quite some time to complete. Nothing will show outside the cowl that wasn't on the full scale....Here are a few pix.

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(in reply to RCV Engines)
       Post #: 5

RE: Giant Scale RCV ?? - 5/22/2008 3:58:40 PM   
andi3142001


 

Posts: 17
Joined: 8/23/2007
From: , AUSTRIA
Status: offline 		Hi Alu Overcast,

your Spit looks awesome! Are this props shown on your pics the standard ones from soloprops, with rounded tips?
I tried a very scale-looking master airscrew for the RCV 120, 18times12. However, blades are not stiff enough, causing bad tracking and vibrations. So I guess I try the soloprops, if they deliver to Europe
And what material is your exhaust made of? Looks like epoxy and glass, but what about the heat?

Thank you
Andi

(in reply to Aluminum Overcast)
       Post #: 6

RE: Giant Scale RCV ?? - 5/22/2008 6:14:18 PM   
Aluminum Overcast


 

Posts: 79
Joined: 9/12/2007
From: Waterford, MI, USA
Status: offline 		The solo prop blades are actually wood. Carl over at Solo Props can make any shape or size you need. Mine are a spitfire shape, somewhat similar to an APC and are very stiff ...No issues of vibration on the test bench especially with 4 blades.

The exhaust is made from fiberglass but the resin is high temp JB Weld I thin with acetone. It's melting point is 600+ degrees Fahrenheit and the glass cloth is in the 1,200 range. Header is machined Aluminum.

Peak exhaust temp I measured off the RCV is 400 and less. The JB Weld can handle 500 degrees all day long. This is an experiment so we'll see.

This aircraft is replacing my old zero equipped with a Saito 56. Both plane and engine have over 800 hours of flying time (can be seen on my gallery)! A bunch of us have flown formation flights with these 60 sized warbirds every Tuesday evening (as well as demo flights during local shows) for the past 6 years....what a blast! A few of us are venturing into warbirds larger than 70 inches. After the Spit I have a CMP 80" zero that I will fly with an ASP 400 AR 5 cylinder Radial.......MMMMMM the sound!

You can see more of the process of the exhaust and the stacks at this thread:
http://www.rcuniverse.com/forum/m_2671070/mpage_37/key_/tm.htm

(in reply to andi3142001)
       Post #: 7

RE: Giant Scale RCV ?? - 5/22/2008 10:56:57 PM   
Juice



Posts: 860
Joined: 2/12/2002
From: Richmond Hill, ON, CANADA
Status: offline 		My, how time flies. This thread was started almost 5 years ago. The wish list is still the same, and there is still nothing to satisfy the market.

We want a 50cc SP engine!

Imaging a 1/5 scale Mustang turning 26" 4-bladed props from Soloprop? Or a 1/5 scale Corsair with a 32" 3-bladed prop? Those would be cool!

Josh

(in reply to Aluminum Overcast)
       Post #: 8

RE: Giant Scale RCV ?? - 5/23/2008 1:36:32 AM   
saramos



Posts: 2250
Joined: 12/6/2003
From: Northridge, CA, USA
Status: offline 		Hear hear!!

I'm just starting a 1/6 scale F4U and would so dearly love to have a geared engine to turn a scale 3 blade prop, and not have to cut holes in the cowl, but rather have a scale exhaust system installed!! The rotary valve does so much for space savings, and the internal gearing does so much for the prop. It would be wonderful if there were several additions to the SP line. I think it could also expand the acceptance of the SP design by more people overall.

Scott Ramos

(in reply to Juice)
       Post #: 9

RE: Giant Scale RCV ?? - 5/24/2008 12:29:56 PM   
andi3142001


 

Posts: 17
Joined: 8/23/2007
From: , AUSTRIA
Status: offline 		Hi Alu overcast,
thank you for info. There are some high temp epoxies on the market, so it would be great to hear from your experience how it works.
Glassing an exhaust instead of welding would make life much easier

regards
Andi

(in reply to saramos)
       Post #: 10

RE: Giant Scale RCV ?? - 6/26/2008 9:38:39 PM   
corsaircrazy



Posts: 157
Joined: 4/13/2004
From: Santee, CA, USA
Status: offline 		I too would like to see a SP motor comprable to a 35cc to a 50cc gas motor in power. I think the market would bear the cost with no problem. Where else could you put a motor in a cowl with no cutouts? Scale planes need pristine cowls! No spark plug wires and head fins protruding!!!

CC

(in reply to andi3142001)
       Post #: 11

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