Originally Posted by pianori (Post 9540995)

So I changed the front bearing and no more problems now. Needles are where they are supposed to and engine idles great and can run continually for the full tank. With an EFRA 2081 I am getting great power thought-out and 11 min out of a truggy tank.

I do have a question though. My engine is a modified Argus so does that mean that it will go through bearings faster because of the modifications on the crank shaft? What I mean by that is that since material is removed from the crank it causes the engine to be dynamically unbalanced thus creating more vibrations. You should also know that the crank is off my 1/1000ths at the tip which makes it 2/1000ths all the way around, I wonder if that has something to do with it.

Let me know your thoughts on this one please.

Originally Posted by madhammer (Post 9541630)

I have also had issues with od 97t Plugs flaming after 5 or 6 minutes of racing. I switched to a voodoo 5 plug and all is good. Very happy with argus engines easy to tune and great power.

Originally Posted by v6shooter (Post 9543449)

same thing with me im fine for a coupe of tanks then 5 to 6mins of racing flame out.Its happen to me with two different 97t.Im changing brands

Originally Posted by pianori (Post 9545733)

Interesting about the plug comment.
Before my issues with the engine (replacing the front bearing) I run the O’Donnell, but now I'm running the OS P3 super hot plug and it works great with super low idle.
I remember reading something like once you go with OS plugs you cannot go back to O’Donnell, or Dynamite plugs. Something to do with the OS having bigger thread than the other plugs so it ends up stretching-out the cylinder threads causing it to compression leak? Is that a fact or an opinion?

Originally Posted by hdcruzer (Post 9554339)

Anybody run a 14/50 gear mesh instead of the 13/50 setup in a Losi with the A52 ? I love the bottom and mid in this thing just trying to get some more top. If it means I sacrafice a little bottom to get the top thats fine as these have plenty of bottom anyway.

Originally Posted by rider313 (Post 9555063)

IN buggy i run 14/48. Truggy i think 13/48 would be better then 14/50.

Originally Posted by John. (Post 9576269)

Why the massive flat spots with the 2081?

Also is that 3033 the best performing pipe on the Argus from what you have seen?

Originally Posted by Maximo (Post 9576135)

stock Argus 2081 vs 3033

http://i107.photobucket.com/albums/m...2081vs3033.jpg

Originally Posted by EBMods (Post 9577786)

Hey Neal are you saying that's a "tuned" run for the stock engine? The power dips usually means the engine is still rich on the mixture when it's wavy like that with good peak power. When tuned you should be able to smooth the curve out with less peak power. Can you show us the cylinder temps or EGT with each run? The big drop at 28,000rpm usually happens with a spun rod bushing; bad bearing, piston and sleeve seize, or even from being rich and causing vibration. If you graph the temp with the rpm curve you can see what the cylinder temps are doing at those points.