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Thus the "Junker" part as in Ju-87.

Try 7-10K in the front. You don't want much diff action up there especially with the big tires.

No flame intended, sorry if you took it that way. My point was that your post doesn't make sense from a physics/chemistry standpoint.

Depends on the surface type. If the surface is such that the tread blocks can get a good bite, then that holds true. However, running harder tires on a hard track that is really smooth and blue grooved...good luck with that one. Soft fuzzies or even fairly soft slicks end up being the order...

Wow, double post within the same post. Haven't seen that before.

The reason it runs cooler is described above. Nothing to do with friction and why in the world would 30% cause the sleeve to expand more? And how would the sleeve expanding more not lead to a loss of power from reduced compression?

Total loss of control of your PC is a "feature." MS owns you now. They control the horizontal, they control the vertical...

Isn't carpet oval more of a grip racing thing though. Not nearly the same as in the dirt lettin' the tail hang out.

Get an E-Savage transmission and drop it in. Add brushless power. Stir.

Couple of considerations when thinking about top speed: 1) Aerodynamics become paramount. You need downforce to overcome the lifting force of the shape of the car as a whole. An increase in downforce means a large increase in drag. Drag increases with the square of velocity. 2) More...

What gearing?

Yep, you're missing the IF107 plates. They'll fill the space there and allow you to bolt everything up. You will probably need a smaller flywheel, it looks like that one is going to stick down below the chassis and cause problems. The stock one from the basic MP7.5 or the 777 will work fine...

They are all different rubber compounds used by Proline in their tires. The order you have them listed in goes from hardest to softest and from longest wearing to shortest.

Actually nitro evaporates slower than alcohol (the filler ingredient in nitro fuel) BUT it takes more heat away when it does evaporate. After a bit of research real reason: Nitro burns cooler than alcohol. More nitro cooler burn. However, it also burns faster and is more prone to...

Some pics of your issues would go a long way in allowing us to assist you.

If you look on the OS website, they have a retarded number of carbs for .21 engines. Oddly they don't have the 20K listed. Tower does. Looking at the two one of the major differences that I noticed is the 20K doesn't have the provision for different intake venturis. Beyond that, it's really...

The carbs are usually the same. The difference is typically found in the sleeve porting. It used to be that only on-road engines had turbo plugs, too.

Last I knew you typically added head shims when going to up in nitro percentage to reduce compression and prevent detonation. Going down in nitro content should have no ill effects other than a slight loss in power.

There are a pair of plates that mount to the chassis that the engine mounts screw into. It sounds like you are missing those plates. They are part number IF107

Might have been gunk in the carb/crankcase/fuel lines that needed to be flushed out.