Ihave to agree about the bearings. Iwouldnt want to risk an obviously powerful 46 on a bearing failure and they are not terribly expensive or difficult to install.

When I think about it, if someone didn't want to use a Fox engine, then the K&B .45 Sportster is worth a look. It doesn't use ball bearings on the crankshaft, but it is a strong runner, and likes to turn larger props than many two stroke engines do, more like a 4 stroke engine. So it would work well with big low pitch props. it also uses a 1/4x28 prop shaft stub so if you crash and bend the end, you can unscrew it and replace it. Plus it is still made in the USA too.  I haven't tried one but the MECOA .46 Aero looks pretty promising too.  http://www.mecoa.com/

I didnt have it happen to me, but when I got my TT 46 Pro, I was advised to change the bearings. Especially if running higher rpms. I can see where the bearing cages in the stock bearings (metal) can become a problem. I put a set of Stainless RCBearings with phenolic retainers and havent had any problems yet. Definitely good $12 insurance.

Does anyone know if there is a true chrome plated liner from another engine that will fit the TT Pro 46? I was going to get a piston and liner to have as a spare but figured its worth finding a true chrome one that fits if there is one.

This thread title should be changed from 3D to favorite cheap engine. There's nothing 3D about this thread IMO.

you read the original post you will find he is looking for a Sport and 3D engine for under $100.