RCG 15 CC Cylinder rotation    Gallery
View related threads: (in this forum | in all forums)

Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version


Garage Sequestration Liquidation
Seller:  Mr DJ
Details:   $999,999.00   |  4/29/2013   |  Classified Ad
We will rotate YOUR AD in this spot if you select "Forum Featured" when placing or editing your ad!

All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Gas Engines >> RCG 15 CC Cylinder rotation
Page: [1]

Tower Hobbies Get Coupon Codes Brands  
Login
Message << Older Topic   Newer Topic >>
RCG 15 CC Cylinder rotation - 9/28/2012 9:32 PM   
Roger Gray


 

Posts: 113
Score: 100
Joined: 10/19/2011
Last Login: 5/22/2013
From: Wills Point, TX, USA
Status: offline 		 I've seen the video of a RCG 15 CC gas engine running and was blown away when I realized the stock muffler was on on the back side of the engine above the carb.  The owner had claimed to have made the 90 degree rotation to accomadate for a rear exhaust and logged 30 flights with no problems.  Anyone else see this, or has anyone else done this with good results.  I love the new generetion of rear carb and rear exhaust engines coming out today-great for my warbird needs!

Hide Signatures
       Post #: 1

RE: RCG 15 CC Cylinder rotation - 9/28/2012 9:57 PM   
DaleD


 

Posts: 210
Score: 105
Joined: 7/30/2009
Last Login: 5/24/2013
From: North Lauderdale, FL, USA
Status: online 		Post a link to the video please, I would love to see it.

Thanks

DaleD 

Hide Signatures

(in reply to Roger Gray)
       Post #: 2

RE: RCG 15 CC Cylinder rotation - 9/29/2012 1:34 AM   
ahicks


 

Posts: 1872
Score: 669
Joined: 8/10/2008
Last Login: 5/24/2013
From: Waterford, MI, USA
Status: offline 		X2!

Hide Signatures

(in reply to DaleD)
       Post #: 3

RE: RCG 15 CC Cylinder rotation - 9/29/2012 4:32 AM   
Roger Gray


 

Posts: 113
Score: 100
Joined: 10/19/2011
Last Login: 5/22/2013
From: Wills Point, TX, USA
Status: offline 		Here is the link you requested on YouTube:   http://www.youtube.com/watch?v=SgvW_QoZwgw&feature=related


 

Hide Signatures

(in reply to ahicks)
       Post #: 4

RE: RCG 15 CC Cylinder rotation - 9/29/2012 11:28 AM   
Lifer


 

Posts: 1683
Score: 148
Joined: 8/10/2008
Last Login: 5/23/2013
From: Kansas City, MO, USA
Status: offline 		I wish I had seen this a couple of months ago! I asked the tech at BP Hobbies and he (rudely) told me that it wouldn't work, and that rear-exhaust would not be popular anyway.

Hide Signatures

(in reply to Roger Gray)
       Post #: 5

RE: RCG 15 CC Cylinder rotation - 9/29/2012 12:59 PM   
ahicks


 

Posts: 1872
Score: 669
Joined: 8/10/2008
Last Login: 5/24/2013
From: Waterford, MI, USA
Status: offline 		Neat. Picture of it running pretty much confirms it can be done. I was looking at the owner's comments, think there may be a typo. He's saying he turned the cylinder 90 degrees, then later says he turned it 180 degrees(?). I think he meant to say he turned the piston 180 degrees - so the ring end gap would work out - without snagging a port opening?


Rear exhaust not popular? That's a little out of touch...

Hide Signatures

(in reply to Lifer)
       Post #: 6

RE: RCG 15 CC Cylinder rotation - 9/29/2012 2:57 PM   
gringopete



Posts: 88
Score: 100
Joined: 7/21/2010
Last Login: 5/6/2013
From: , NJ, USA
Status: offline
Ok he did turn the cylinder and it did run. Bur here are the reasons you should not do it.
By turning the cylinder you block both of the intake ports. This will kill the power, the engine can’t breathe. What’s the point if the engine does not produce any power?
By turning the cylinder the pins that keep the rings from rotating come dangerously close to the edge of the ports.
I have tried to modify all of these engines and when we are successful it comes out as a new version.
The last and best reason not to do it is that it voids the warranty.



_____________________________

Gregg P


Hide Signatures

(in reply to ahicks)
       Post #: 7

RE: RCG 15 CC Cylinder rotation - 9/29/2012 3:14 PM   
ahicks


 

Posts: 1872
Score: 669
Joined: 8/10/2008
Last Login: 5/24/2013
From: Waterford, MI, USA
Status: offline 		I was wondering about how those ports were lining up. The fact it's running means they aren't completely blocked. Curious about how much that did affect the power, ability to turn the same size prop it did originally? Potential for the ports to be cleaned up enough to get it to original power and still hold a good cylinder to crankcase seal reliably?

May have to get one just to mess with. Been looking for an excuse to get one anyway.

Gregg, is there any difference in the ports beam mount vs. stand off mounting?

Anyone asking about or expecting warranty after doing this is just being silly. You're obviously moving well outside the original engine's design criteria with this mod...

Hide Signatures

(in reply to gringopete)
       Post #: 8

RE: RCG 15 CC Cylinder rotation - 9/29/2012 4:36 PM   
gringopete



Posts: 88
Score: 100
Joined: 7/21/2010
Last Login: 5/6/2013
From: , NJ, USA
Status: offline 		Yes there is a difference in the ports between the 15 beam and cross mount. The 15 beam has three ports while the 15 cross only has two. This is one of the reasons that the 15 beam makes more power. The ports in the cylinders match ports cast into the crank case.
The best choice to rotate the cylinder would be the beam mount, but it will require internal machining of the crankcase. If you ask me not worth the effort


_____________________________

Gregg P


Hide Signatures

(in reply to ahicks)
       Post #: 9

RE: RCG 15 CC Cylinder rotation - 9/30/2012 2:37 PM   
karolh


 

Posts: 5634
Score: 310
Joined: 5/16/2002
Last Login: 5/24/2013
From: Mandeville, JAMAICA
Status: offline 		The engine's rpm in the video sounded at bit subdued to a normal running beam mount 15cc.

Karol

_____________________________

When inverted always remember that down is up and visa versa

Hide Signatures

(in reply to gringopete)
       Post #: 10

Page:   [1]
All Forums >> Glow Engines, Gas Engines, Fuel &amp; Mfg Support Forums >> Gas Engines >> RCG 15 CC Cylinder rotation
Page: [1]





Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

RC Universe is a service of Internet Brands, Inc. Copyright © 2001-2013.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


0.766RCU1