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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> RC Fuels >> rc boat fuel
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rc boat fuel - 4/9/2003 12:28:23 AM   
lap cat 1 racer


 

Posts: 24
Joined: 4/3/2003
From: Ft. Pierce Fl.
Status: offline 		I us 65% nitro in my K&B .21 on a prather lap cat 1 is this too much nitro? also does anyone have a suggestion on which prop to use



Thanks,
Lap cat racer
       Post #: 1

rc boat fuel - 4/9/2003 1:45:45 AM   
Turn&Burn



Posts: 243
Joined: 1/8/2003
From: Hoover, AL, USA
Status: offline 		I would not run 65% in a k&B .21 Way to high for that motor....If you want some good kick I would not go any higher than 40%...On the prop a prather 215 works fine on 21 tunnels.....It did on mine........BTW are you having probs keeping a needle setting??? If that is a full blown moded motor forget what I have just said

(in reply to lap cat 1 racer)
       Post #: 2

65% nitro - 4/10/2003 12:39:31 AM   
lap cat 1 racer


 

Posts: 24
Joined: 4/3/2003
From: Ft. Pierce Fl.
Status: offline 		my k&b .21 is stock but is under going full race mods by rooster tailz I have heard that these engines can make up to 2.8 hp is there any truth to this? if so that lap cat 1 will FLY!!!! any body have suggestions for a prop?

Thanks,
lap cat 1 racer

(in reply to lap cat 1 racer)
       Post #: 3

Re: 65% nitro - 4/10/2003 8:15:33 AM   
Turn&Burn



Posts: 243
Joined: 1/8/2003
From: Hoover, AL, USA
Status: offline 		[QUOTE]Originally posted by lap cat 1 racer
I have heard that these engines can make up to 2.8 hp is there any truth to this?
Thanks,
lap cat 1 racer [/QUOTE]


With mods, absolutely!!!!

(in reply to lap cat 1 racer)
       Post #: 4

rc boat fuel - 4/11/2003 12:04:21 AM   
lap cat 1 racer


 

Posts: 24
Joined: 4/3/2003
From: Ft. Pierce Fl.
Status: offline 		turn&burn i am not haveing trouble keeping a needle setting but i run mine on the verge of dying from lack of fuel it is so lean but it gives awsome speed

(in reply to lap cat 1 racer)
       Post #: 5

rc boat fuel - 4/11/2003 3:17:30 AM   
Turn&Burn



Posts: 243
Joined: 1/8/2003
From: Hoover, AL, USA
Status: offline 		The higher the nitro the harder it is to keep a needle setting.......I have Picco (heavily cut on) .21 and since it has been cut on and a custom machined big bore carb installed, it will not even hardly run at any throttle setting except at WOT......If you let off on it, it is still just dumping fuel in it so it just bogs down But when it cleans out you better be ready... I am running o'donnell 50 and this little mono will freekin fly....It is hard to tell but I just about bet you if you lower your nitro to 25-35 on a stock engine it will be easier to tune and run....might not run as fast, but fewer headaches...and also not risking frying you engine before you have the chance to mod it.....

< Message edited by Turn&Burn -- Apr 10 2003 10:25PM >

(in reply to lap cat 1 racer)
       Post #: 6

rc boat fuel - 4/11/2003 7:13:15 AM   
lap cat 1 racer


 

Posts: 24
Joined: 4/3/2003
From: Ft. Pierce Fl.
Status: offline 		I have a os .61 fx i just took the carb off and put it on my K&b .21 and i bet it picked up 5 to 10 mph any body else doing this?

(in reply to lap cat 1 racer)
       Post #: 7

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