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-   -   os .61fx help (https://www.rcuniverse.com/forum/beginners-85/6559665-os-61fx-help.html)

808_TITAN 10-30-2007 05:04 PM
os .61fx help
 
it seems everytime i start my engine that it is in reverse, and i have to restart it a few times before it spins in the correct way. is this normal or do i need to do something, and how can i make it stop that? thanks

DMcQuinn 10-30-2007 05:47 PM
RE: os .61fx help
 
I assume you are flipping the prop with a stick. If so, then that happens with glow engines. If you use an electric starter, this will not happen. My large glow engine (Moki / Mark 210) I always flip backwards and 99% of the time it then starts running forward.

housedad 10-30-2007 06:22 PM
RE: os .61fx help
 

ORIGINAL: 808_TITAN

it seems everytime i start my engine that it is in reverse, and i have to restart it a few times before it spins in the correct way. is this normal or do i need to do something, and how can i make it stop that? thanks

What fuel are you using? How much nitro? Is it FAI fuel? What glow plug are you using? Is it the reccomended one from the manufacturer or a aftermarket that is hotter?

Too little nitro can cause early ignition, so can a plug that is too hot or has too much current. Then it fires early and the compression stroke reaches a peak well before top dead center and it starts running backwards.

bigtim 10-30-2007 06:31 PM
RE: os .61fx help
 
some times if you just drop and raise the throttle quickly it will flip and run forward I almost always use a elec.starter but when I have fliped the prop and the engine started in reverse the throttle trick works most of the time,as well as back fliping the prop to start forward like DMcQuinn pointed out

bruce88123 10-30-2007 07:23 PM
RE: os .61fx help
 
None of that explains what is actually causing the problem. Most likely over-primed.

RCKen 10-30-2007 07:43 PM
RE: os .61fx help
 
Bruce is right on the money. Engines usually run backwards because they are flooded.

Ken

downunder 10-30-2007 08:48 PM
RE: os .61fx help
 
Bruce is correct. Change your method of priming so you get less fuel in before trying to start it. Keep doing this until it starts the correct way each time. Most likely you'll find it needs a different prime hot or cold, hot may not even need a prime. It's a matter of getting to know what the engine likes.

808_TITAN 10-30-2007 10:49 PM
RE: os .61fx help
 
thank you guys very much. thats what i love about this site and this hobby. if i have a question it is awnsered for every senario. i will try this things. i do use a chicken stick that i made because when i use the starter it digs grooves in to my spinner and slipps off so i figure man power will do. but once it has flown it dosent reverse i guess im putting to much prime. im useing a #8 glow plug that my LHS guy said to use and that that was the one installed on the motor. thanks again guys you are the best...

Cyclic Hardover 10-30-2007 11:02 PM
RE: os .61fx help
 
ORIGINAL: housedad


ORIGINAL: 808_TITAN

it seems everytime i start my engine that it is in reverse, and i have to restart it a few times before it spins in the correct way. is this normal or do i need to do something, and how can i make it stop that? thanks

What fuel are you using? How much nitro? Is it FAI fuel? What glow plug are you using? Is it the reccomended one from the manufacturer or a aftermarket that is hotter?

Too little nitro can cause early ignition, so can a plug that is too hot or has too much current. Then it fires early and the compression stroke reaches a peak well before top dead center and it starts running backwards.

Are you starting if from the left side of the plane or the right?:D Bob. an electric starter can prevent it but like bruce said, over primed. There is a bit of a trick that sometimes works and thatis to make an attempt to shut it off and just as its about to quit, turn it back on and it may jump it the other way,

bruce88123 10-31-2007 08:17 AM
RE: os .61fx help
 

ORIGINAL: 808_TITAN

thank you guys very much. thats what i love about this site and this hobby. if i have a question it is awnsered for every senario. i will try this things. i do use a chicken stick that i made because when i use the starter it digs grooves in to my spinner and slipps off so i figure man power will do. but once it has flown it dosent reverse i guess im putting to much prime. im useing a #8 glow plug that my LHS guy said to use and that that was the one installed on the motor. thanks again guys you are the best...
#8 plug is fine for this engine. As for the grooving - keep the spinner clean and press the starter cone firmly against it BEFORE pulling the trigger. You may need to seek out a softer or different shape cone depending on the spinner that you are using. I don't personally worry about a little starter burn on the spinner as long as the spinner remains strong.

808_TITAN 10-31-2007 04:17 PM
RE: os .61fx help
 
i start it from the right side. but i will be trying it from the left to see if that works.


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