TRX vs. ATC Flywheel

[gandgracing]

I know by looking at them they are different by the number of rivets holding them together. Are they the same otherwise? Timing still the same?

[Honda 250r 001]

85 atc's had a 5 gram lighter flywheel, other than that, all teh same.

[smokinwrench]

I have both and compared them last week. Same timing, key way is in the exact same spot. atc fly wheel inner hub is built different. atc fly wheel is right at 2 ounces lighter. I have both flywheels at work and can get the exact weights and measurements if you need it.

I also know that you can't take off as much material on the atc flywheel as you can the trx flywheel. Machinist at work was lightening it up for me and got a little too far.

[gandgracing]

I got a brand new atc flywheel from a buddy and just wanted to know if it was the same as the Trx. Thanks.

[86 Quad R]

Originally posted by smokinwrench
I have both and compared them last week. Same timing, key way is in the exact same spot. atc fly wheel inner hub is built different. atc fly wheel is right at 2 ounces lighter. I have both flywheels at work and can get the exact weights and measurements if you need it.

I also know that you can't take off as much material on the atc flywheel as you can the trx flywheel. Machinist at work was lightening it up for me and got a little too far.

are you absolutely sure of this. i'd like to know for sure. thanks

:cool:

[smokinwrench]

trx flywheel weight 2lbs 5.4oz
atc flywheel weight 2lbs 2oz

That is what the machinist wrote on them.

[trx310R#24]

http://i36.photobucket.com/albums/e16/asm43101/Image0059.jpg

dont know if its a atc or trx but here

[thedeatons]

So, how much hp does 5.2oz make?

[k265r]

they would be lighter due to the center hub being smaller. Ive seen them crack easier also. line them up together and check where the pickup makes contact they could be located different.

[smokinwrench]

Originally posted by k265r
line them up together and check where the pickup makes contact they could be located different.


I already done that, everythign is identical, besides the center hub.