Ok, i heard stuff about this before, but it just happened to me today for the first time in the hobby. when i started up my xtm .18 it ran backwards when i hit the gas. then i let it continue to run and about 10 seconds later, it perked up and then drove forwards. I have no idea how this happened, and i use a pull start to start it. I just thought id let you all know. I have no clue how the engine ran backwards than switched forwards by it self.

That's impossible.

its posible i was starting up my plane it started up backwards and then in like 5 secs switches to nomal

y you sayin its impossible? i wish i had i on vid. i would of proved it. all it does is sound weird than sound normal

yea it when it starts up backwards, it has very low power, its possible, it just happened to me and iv been in the hobby for 2 years. I heard about it a while ago, i think it was in a rc magazine, im not sure, cause i browse alot of rc sites.

but i still wonder how does it start backwards?[&:]

Ive had 2 nitro trucks, and on my first one(tower hobbies nitro st-15), it did it to me twice i think. They have NO power, but its awesome to see something that doesent have reverse driving around backwars for a second. Mine was running right, and then all of a sudden, it had no power, and the truck went backwards for a second and then died on me. It took me a while to figure out what it was. Also, we have an older 2 stroke ez-go golf cart, and instead of switching the tranny into reverse, the motor shuts down, and starts back up in reverse so it will have reverse. I couldnt believe it when i figured it out. It has happened to me too, so dont say its impossible. And if it is, why do you say that? The piston still goes up, and down, and makes a suction to pull fuel in, so why is it impossible?

Eric

They dont know anything about engines cause it is possible.

wow. i have the xtm .18. with the pullstart. i didnt think the engine could turn backwards because of the oneway and the pullstart. unless its slipping the oneway. i cant even spin mine bacwards by hand. it tries to suck the pullcord in the cover. what do i know though. i blew my engine after a gallon.

Totally possible. Happens all the time on my RC planes when I try to finger flip start them. It's no big deal.

If you understand how a 2 stroke engine works this isn't such a mystery

well my pull start has been slipping, but i havnt cleaned the one way bearing yet.

lol, my one-way bearing in my rustys pro.15 engine always would slipp. so i found a solution[X(]before you run you truck take the glow-plug out an flip the truck ove let it sit like that for about 10 secs then while the truck is slip flipped over start pulling the pull start for about 5 secs like you would trying to start it. then just flip it back over put the plug in prime it and have fun. i have been doing this for 3 months know and i havent cleaned my one-way bearing till yesterday cuz i was tightening the spring

Though its to be expected with the XTM/SH .18, what fuel were you using?

I think he ran it real lean.

i ran 20% blue thunder. it blew because i was showing off. wide open on a horse race track. wot for 30 seconds at a shot. it was screaming. good news though. just today i got a new engine in the mail from xtm. free. how would you sudjest i break it in? and what fuel should i be using?

Just break it in just like the manual says, and for fuel, i like Monster trinity horse power 20%.

eww... i wouldnt trust Trinity with my life... that stuff is almost as bad as Duratrax Red Alert. As everyone knows, I'd rather run Odonnell R2R fuel or Blue Thunder fuel. That Terracrusher I was talking about in the monster threads... my buddy's engine is so worn is unbelieveable. He got only 3 gallons thru it... and I was there every time he used it. He is now a Blue Thunder/Odonnell guy. Now is it just me, or is Trinity Monster fuel one of those that foams up a lot?

ive always used the blue thunder. ive gotten 8 gallons through the 2.5 t-maxx's. of course i has a cooling head keeping temps down alot also. but i cant complain about the performance of the fuel. i still use it in my lst. just bumped up to 30% though for that. i wonder how the 30% would work for my x-cellerator.

Thats not true, maybe you had bad experience with trinity, but i read RC car action all the time and alot of racers love it.