trying to start my sky raider for the first time today its got a .52 evo engine installed with a 11x6 master air screw prop and a tru turn spinner on it also i primed it without the glow plug and after several cranks it tried to start but it made a loud popping sound in the lower portion of the engine but the trouble seems like the spinner is too tight or something ive got it installed excatly as it is shown on the instructions i double checked that do you think a 11x 6 is too much prop or what could be my trouble? i put a 10x8 wooden prop with no spinner it turns alot easier but my glow plug is weak so im chargeing it for a while before i try to start it again

A 11-6 is plenty small for a 52 evolution engine

Are you hand flipping it or do you have an electric starter.

The Evolutions need the hottest plug you can find to run in the winter Like a OS A3

im trying it with a chicken stick its got me worried the awful sound it was makin

ok i tried it again it turns over by itself a few spins like its starting then it just locks up and stops it takes alot to get it spun back over then it does the same thing over does this sound like its got too much fuel or something more

It sounds like it's hydro locking.

NEVER turn a broken in engine by hand if you feel a lot of resistance. You can break the piston rod doing this!

ABC engines will have a LOT of resistance initially when they are new.

The Evolution comes "pre-run" from the factory so it will not have an undue amount of resistance to be turned over.

BTW: Do you mean EVO, or Evolution, these are two different manufacturers?

Remove the glow plug and turn the engine over by hand.

Do you feel about 30%-40% more resistance with the glow plug installed, than with it out?

If the engine feels very easy to turn over w/o the glow plug, but very hard in your prior experience, then it's hydro lock.

Evo doesn't make glow engines, only gas. Evolution makes glow engines and gas engines.

im sorry its a evolution i got it started it was hydro locked this is the first time this ever happened to me isnt that awful hard and damageing on the engine seems like to me it would be ?! i now have another problem ive never dealt with before its not a bad problem just odd the engine turns backwards about every other time i start it now what causes this?

Your just not following through TDC good & it's firing backwards, I would suggest getting an electric starter.

When trying to start it you might try flipping the prop backwards and let it snap back forward. That may help. Use a stick and not your favorite digit.

its just one of those days i guess ,i tried out my new electric starter like suggested i have a tower hobbies control panel and when i hooked it up i let my alligator clips touch and it fried my battery wire completly so now i dont have a fuel pump so i cant drain my tank till i can get a new control panel or get new wire and fix this one back what causes hydro lock it seemed to just keep doing it all afternoon could it be the way i have something on the carb set i didnt think i was getting tooo much fuel because i could actually see air bubbles in the fuel line i did get to here the .52 run for a little while but of course my receiver battery ran down before i could do any adjusting! not a very productive day here at the farm!!!!

In my experience, starting backward is a sign of over-priming or too rich. Also I've found newer engines often start backwards much more than when they are broken in a bit.

If an engine is really loaded up from over priming, it will kick back hard when the engine is cool, usually won't fire at all if the engine is hot, a situation which can fool you into priming it even more. Sometimes the engine will even oscillate.
The cure, pull off the fuel line from the carb and keep trying to start it. Every time it runs for a small burst, that's so much less fuel pooled up in the crankcase. Eventually it will clean out and run strong for a couple of seconds before running dry.
Now hook up the fuel line and choke the engine just until the fuel reaches the carb and no more and it should run when you flip the prop.

Always start the engine with the throttle closed to idle, it's actually easier to start that way.