Originally Posted by kingtito (Post 13844981)

I have a question about the .12 Virtus

I bought one when it 1st came out. I probably have have about 3 gallons but I'm going on my 2nd main bearing already. I haven't over heated the engine but for what ever reason the bearing is going bad.

I ran at the Airtronics race last weekend and blew 2 glow plugs in the main. After checking the conrod, we discovered it has a little play and needs to be replaced. We measured the pin on the crank and it was within specs just in case it was worn.

What would cause my bearing to go out so fast? 2 $100+ bearing in less than 1 year is a pretty steep price to pay. I decided to just order the complete rebuild kit. Anyone have any ideas what would cause this?

Originally Posted by GREGORY! (Post 13845141)

i guess bad fuel?
lean setting?

Originally Posted by kingtito (Post 13845340)

I'm running Prime Fuel 16% and have been from the start. Temps are usually around 220-250 and peak of 260. I'll keep a better eye on the temps after I replace the parts.

Thanks for the response

Originally Posted by monaro (Post 13856563)

Hi all I have a strange problem with my plus 35. It's had around 20-25 litres run through it have changed rods an bearings regularly. But last club day went to start if and it kept locking up like a new motor. So I pulled it down everything looks fine no marks the rods perfect but the piston will only slide half way up the sleeve. An jams like it needs to be run in again. What could cause this can the piston expand and not shrink back?

Originally Posted by kingtito (Post 13861011)

What's the best way to break in the Virtus after getting the rebuild kit? I just received a new P/S conrod and wanted to make sure I do it proper.

Originally Posted by kingtito (Post 13844981)

I have a question about the .12 Virtus

I bought one when it 1st came out. I probably have have about 3 gallons but I'm going on my 2nd main bearing already. I haven't over heated the engine but for what ever reason the bearing is going bad.

I ran at the Airtronics race last weekend and blew 2 glow plugs in the main. After checking the conrod, we discovered it has a little play and needs to be replaced. We measured the pin on the crank and it was within specs just in case it was worn.

What would cause my bearing to go out so fast? 2 $100+ bearing in less than 1 year is a pretty steep price to pay. I decided to just order the complete rebuild kit. Anyone have any ideas what would cause this?

Originally Posted by monaro (Post 13856563)

Hi all I have a strange problem with my plus 35. It's had around 20-25 litres run through it have changed rods an bearings regularly. But last club day went to start if and it kept locking up like a new motor. So I pulled it down everything looks fine no marks the rods perfect but the piston will only slide half way up the sleeve. An jams like it needs to be run in again. What could cause this can the piston expand and not shrink back?

Originally Posted by dan_vector (Post 13861073)

This isn't normal at all. Usually in my experience 99% of premature bearing/rod failures is due to using poor fuel. I've never heard of the fuel you are using! Maybe worth changing brands to something more known and reliable.

Originally Posted by kingtito (Post 13861211)

Is there a way of removing the bearing without using a bearing puller? Like using an oven for the Virtus? I don't have access to a puller at the moment so I'm looking for ways that won't hurt the engine.