AJsToyz

I took out a nitro plane the other day and after one flight i had more oil on everything then in the engine ! Unreal !! LOL I can deal with a little black stuff on the tail if need be.

Andy

outacntrl

thanx for the oil replies..i guess i'll stick w/ the penzoil....next cpl gallons @ 32-1 im running a little more oil than that right now..no plug fouls and very little stuff on plane..ps the 45 runs great, couldent be happier w/ it ..hope'n to get out this aftrnoon, if the rain and honey doos dont spoil my plans..although i got momma a new car on sat so im golden for a while..yes its a chevy

FOOPED

My Feedback: (8)

Hey outacntrl please let me in on your prop and RPM and all. I have the 45 and I am running a Zoar 20-6 on the breakin. About 1and1/2 gal through it and just tried 20-8 Zoar on it only got 6600 rpm but I have not retuned the engine. Still breaking it in.

DaddySam

My Feedback: (9)

I hope that you've tuned your engine for max RPM minus about 100? If it's running rich you're not doing it any favors. I would think that you'd be getting a lot more RPM with a 20x6 Xoar. I had a BME 44 and was getting over 7000 with a Xoar 20x8. I've just started running another new engine and after running about 6 oz of fuel through the stock settings I tuned the high speed needle for max and then richened until it dropped just a tad, and then set the low needle for leanest setting with reliable acceleration. I'll leave it like this until I've burned a gallon or so, then retune unless there is an obvious need earlier. These gas engines do not do better running rich during break in the way the nitro engines do.
Sam

tym2brn

I have couple of gallons of fuel run through my 45 now, engine runs great...only thing I notice is from half throttle to full throttle thier isnt much of a rpm increase....not like I see with one of my glow engines....is this typical with a gas engine? or do I need to do some fine tuning?

DaddySam

My Feedback: (9)

Very typical of the walbro type carbs we use. I use expo on the throttle to even out the curve a bit. I try to have about 3/4 total RPM at half throttle and then the last quarter doesn't all come in at once. You can make the throttle a bit more responsive by having a longer throttle arm. If my engine is *****g out at 7200, I try to have it around 5500 or so at mid throttle. 3000 rpm is really just above idle on these engines, so if idle is at 1500, high idle at 2000-2500, then 5000 at the midpoint and 7000 at full throttle seems to work well. I set my high and low speed needles then set the stick at the midpoint, then adjust the expo to bring the RPM's down to the desired level. If you have a mulitpoint throttle curve there are just more steps to set.

outacntrl

hey fooped last time i had a tach on it was gett'n 7350 seen 7400 ounce that was w/ prolly a gallon thru it ..next time i get it out i'll chk it again i'm running a xoar 20x8 wood, was gonna go right noww but its raining.. might take the elec up in between showers i'll run it later in the garage and ley u know...

FOOPED

My Feedback: (8)

Yea outacntrl and daddysam I know the RPM is only 6600 on a 20-8 but my elevation is 3000 ft. So far on every gas engine I have with the exception of two my RPM range is always several hundred lower than anyone elses. But also I do not have very much run time on the engines. They will never match what ya'll are getting.

DaddySam

My Feedback: (9)

I have to disagree. I'm at 2500 feet and so I think that there is something else going on with your motor. Either tuning, or a very restrictive exhaust or, a mislabled prop, or timing that's off would be my first guesses.

outacntrl

ok fooped.... i warmed her up ..was gett'n 7320 w/ the 20x8 xoar... im @ aprox 1000 feet elev..warmed it for about 2min, idle about 1800ish. it was bouncing between 7300-7320.. havent tried any other props.. i got a cpl of the 20x8...they seem like the right ones for this motor,where im @..mabe w/ the higher elev u need something smaller??? im new to this gas stuff so i'm prolly not the one to get to much advice from

FOOPED

My Feedback: (8)

Hey Thanks for the Info are ya'll using the stock muffler on the 45. I am using a G-62 pitts style muffler. I am going to put the stock one on and check RPM and see if it makes any difference. I have already checked the timeing and its right on. I will have more time this week to really fine tune the engine. All I know is the engine run fine and transions really well . I have made 10 flights and no dead sticks but have lost two props on landings. The plane is 16.5 # . Outacntrl keep your post coming with all your comments and I look forward to your Info. I have learned from these forums that everyone has good Info and this helps us all. Daddysam you may be right on muffler restriction. I do not use stock mufflers on most of my planes. Thanks Don

DaddySam

My Feedback: (9)

Don,
Keep us posted because I too would like to know if we pay a big penalty for a pitts style muffler. I always thought that they were pretty free breathing. Good luck and post your results!
Thanks
Sam

outacntrl

yea mines got the stock one on it... although i did cut about 1 1/2" off the outlet pipe was kinda low for my plane.. opps..did i just void my warnty []

AJsToyz

I've heard from a few guys you loose some power from going from the stock muffler to a pitts style but only 100-200 rpm's.

Andy

Wolf_Pack

Evening guys, Can someone please tell me what weight oil to use. manual don't mention it. Tommow will be my first break-in (rcgf 20 cc side mount carb. Could sure use the help.
Thanks Wolf

moto-x

Pennsoil aircooled 2 cycle oil mixed 32 to 1.

Tseres

Welcome to the RCGF Club. I think you will like it.
I also use Penzoil 32 to 1. Se no reason to change.

Do yourself a favor and check this out before you go out to the field. It will answer a lot of your questions. Wish someone would have pointed it out the first day I started.

http://www.rcuniverse.com/forum/m_86...tm.htm#8674981

Mr.FiberOptic

try this pennzoil link or find an equivalent at your local lawnmower,chainsaw or hardware store.
http://oilstore.stores.yahoo.net/pe2cyforairc.html

moto-x

Well, after recieving my 50cc twin nearly 5 months ago I finally got it on the test stand. I mixed pensoil aircooled 32 to 1. Primed the fuel pickup line all the way to carb. Choke on, 3 flips and a pop. Choke off, 2 flips and the engine was running. I let it run for a minute or so and pulled the throttle. The engine died as it was lean. I turned the low needle out 1/8 turn and refired on 2nd flip. this engine idled pretty smooth from the start and revved to 6250rpm with a 21/10 BME wood prop. I have to say I"m real pleased right now. Henry, You have one fine peice of engine here and Thank you.

goirish

That's odd. I went from the stock to the wrap around pitts and gained about 250 with no other adjustment.

Tired Old Man

My Feedback: (1)

Different mufflers, manufacturers, and muffler types have different effects. Like props, there is usually some room to experiment.

8of10

We need to start some conversations about the RCGF 28cc soon !

Thanks, Henry, you made my day.

aussiesteve

It may well be that the 28cc isn't from RCGF - It may well be that it is from Aerovates own Factory

Tseres

My 26 just went up for sale. He He!!!!!

bubba 9999

My Feedback: (8)

I'm having some troubles getting my 45 started since it has sat for a while. It fires initially but won’t run for more than a second or two, I’ve checked the ignition, and fuel tank even disassembled the carb and gave it a thorough cleaning. The only thing left that I can think of is the pulse line which looks good or the diaphragm for the pump in the carb. What brand is this carb anyway and where can we get replacement parts, RCGF?