Screaming noise coming from trans?

[Meejacob]

Hey guys so there's a noise coming from my trans that I just can't seem to figure out. I thought the problem was the bearings So I changed them out but still the sound is there. The gears I'm running are 7:1 Malossi straight cuts. Proper amount of oil is being used in gears. Af16 block. Any idea what it could be?

[maddog]

an old belt or a stuck final drive pulley, take it apart and check the pins that ride the s-grooves if they bind the unit is shot = it needs grease every yr.

[noiseguy]

Is noise new, or did it happen at the same time as the gear change?

There's a reason most gears are cut helical... they are quieter. Straight cut gears are loud.

[eliteguy50]

Can you turn the gears by hand without binding? If so, noiseguy is right, you're going to have to adapt to straight cut primaries or switch to secondaries.

[maddog]

Its simple- gears don't scream.