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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> RCV Engines Support >> 120 sp newby questions
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120 sp newby questions - 11/7/2007 2:05:30 AM   
gasayers


 

Posts: 130
Joined: 10/14/2004
From: Auckland, SK, NEW ZEALAND
Status: offline 		Started running in my 120 sp today. Now have 20 minutes.
Started no problems and runs great so far. Using 10,15 fuel and wand starter as suggested.
Question, the breather on the side of the motor, should I just connect that to a waste tube?
and the end cone on the exhaust has come loose. Does that matter? motor seems a lot louder than I might of anticipated. Is there some way I can silence it better?

Cheers


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RE: 120 sp newby questions - 11/7/2007 7:42:44 AM   
mboland



Posts: 201
Joined: 7/20/2007
From: BouldercombeQueensland, AUSTRALIA
Status: offline 		Those mufflers will continue to blow apart. The only sucessful solution I found was either an OS muffler (the end cone is welded on) or the flexible exhaust tubes that act as mufflers.
The instructions give you a maximum length for the crank breather tube, and you deffinitely DO want it exiting outside your cowl.

Expect RCV's instructions of 2hrs runin time to be an absolute minimum. try 5 or 6hrs.

How is the motor vibration wise?

I was finding at half throttle that the engine vibrated a great deal.

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It's the quality of life that counts, not the quantity.

(in reply to gasayers)
       Post #: 2

RE: 120 sp newby questions - 11/7/2007 8:47:31 PM   
Whistling Death


 

Posts: 1006
Joined: 3/1/2006
From: Alexander City, AL, USA
Status: online 		When I ordered my 120 SP & 90 SP, I went ahead and got the OS mufflers to replace the stock RCV mufflers. I am still breaking in my 90 and haven't gotten to the 120 yet. I am learning that you can put the stock muffler on there and use it till the end pops off. Then put the OS one on there.
You definately what to put an tube on the crank case vent. The excess oil will make a sloppy mess on the inside of the cowl if you don't. My insrtuctions just said make it as short as possible.
A lot of guys are putting a small tank,including me, on the inside of the cowl to capture the oil during flight then empty it afterward. I just ordered a 1 oz. Sullivan fuel tank to do that job.
You need to make sure you put a good coat of epoxy on every thing around the firewall because it will get soaked with excess fuel and oil.


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(in reply to mboland)
       Post #: 3

RE: 120 sp newby questions - 11/10/2007 12:48:10 AM   
gasayers


 

Posts: 130
Joined: 10/14/2004
From: Auckland, SK, NEW ZEALAND
Status: offline 		Thanks for that.
Like the idea of a small Sullivan tank. That’s on the list. I'll weld up the pipe when I get around to it.
Regarding vibration. So far I'm very impressed. No vibration there to cause any concern and I gather it reduces although I can't see how or why.
Cheers
I'll report back as I go (which could take several weeks or months.)

(in reply to Whistling Death)
       Post #: 4

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> RCV Engines Support >> 120 sp newby questions
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