VEXPro Ball Shifter Shaft Malfunction

[BrendanB]

Originally Posted by JVN

Hi Brendan,
These are a press-fit, but are also cured with loctite. We haven't seen the failure you're describing. You can try using a strong loctite on your shaft, or contact our support department and we'll ship you a replacement. (support@vexrobotics.com or 903.453.0802)

-John

John,

Thank you for the quick reply.

Our students are putting loctite on the shaft and will let it cure overnight and see if that holds.

Thanks!

Brendan

[Paul Copioli]

Please make sure to use loctite 609. We had a few shafts in early production that were not properly cleaned prior to bonding. This may be one of those shafts.

In any case, we will replace it if you can't fix it yourselves.

[peronis]

We experienced the same thing today when testing our drive base on blocks. One shaft came out and the chains flew off....the other started coming out. Chains were in alignment. The back pair of chains were a little too tight, perhaps that's the reason.

We are thinking about machining a collar to grip the shaft to the shaft housing so our drivetrain will be worry free.