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HomeRC & PowerAircraftHelicopterEngines Plugs Mufflers Fuel › OS 55 HZ-R ?'s
10-12-2011 11:57 PM  7 years agoPost 1

rrElite Veteran

Indianapolis, IN

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I haven't flown nitro in a while so I haven't been following any of the engine discussions. I ordered an HZ-R for my N5c...

What plug is the get? OS #8?

I know the Funtech B320 is the muffler of choice but is the Hatori any better?

What is the better fuel to run? I have been partial to CY in the past...

Thanks in advance!


Just give me five dudes and two flashbangs...

10-13-2011 12:23 AM  7 years agoPost 2

rrKey Veteran

Canada's Capital

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O.S. #8 Plug is best to use

From many many reports the B320 seems to be best ( better than Hatori)
B320 is what I run

CY fuel is what I use I find it to perform better than the rest I have tried (cool power, power master, omega...ect and really easy to tune.


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10-13-2011 02:52 AM  7 years agoPost 3



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I have only flown Cool Power, Power Master and Byron, and hands down Cool Power is the best. This is information from a guy who use to burn about 100 gallons a year, I currently use about 50. Cool Power 30% the label, color and blend remain the same for years simply because it works..
I have never flown Curtis fuel but I have heard reports of it foaming a bit, but other than that I hear it is pretty good fuel.

Hope this helps

Cool Power Fuels
Planet Hobby
Davinci Machining.

10-14-2011 10:26 PM  7 years agoPost 4
Kevin Dalrymple

rrKey Veteran


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I have one and here is the best set up I have found.

OS # 7 plug. Smother idle and transition
Byrons masters blend. Cool power is good, but Byrons goes through the reg better.
Funtech b320

Hope this helps.

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