bearings...

[gearhead]

I ordered a new set of sealed bearings for my the hubs on my car and put them in with the seals.
Now im thinking of:
1. leaving all seals in
2. taking out the inside seals
3. removing them completely
They get pretty dirty with no seals and i cant see them turning without drag being so dirty.
would there be less drag with dirty bearings than with seals on the outside?
Im not going to want to take them out and clean every week.
opinions vary i expect  

[Grinder]

If you are running Nitro keep 'em in.  Otherwise you want a shielded bearing for electric...