Purpose of "bump" on top of lower shaft?

[tcornel]

What is the purpose of the triangular bump on top of the lower shaft other than alignment when attaching shaft? Does it help hold the shaft when in use?

I am considering cutting it out and flipping the shaft 180 to allow stress relief from the coil wires.

I have had 2 17" coil failures due to wire cracking. Minelab sent new coils but my original warranty is expiring and the next failure will be on me.

 

[IDXMonster]

Set up that way the lower shaft with coil CANNOT fall out of the upper shaft. Basically a level of security.

 

[Ben Town]

Where exactly was the wire failure on the coil?

Sounds like your wanting to get the wire opening in the shaft reversed so the wire will come out the top?

Will taping the wire coming out of the coil help?

Sorry for all the questions , but I'm getting a new 17"coil soon.

Thanks
BT

 

[tcornel]

The cracking failure is in the guards of the rubberized wire reinforcement coming off of the coin. Looking between the cracks the wires will crack and allow moisture penetration. The more times the coil flexes to a "flat" position the sooner it can happen. It is a know issue with all the coils.

I was wanting to flip the shaft so the wire would go in that really nice large opening. I may just cut out the top of the shaft around the reinforcement area to accomplish the same thing.

 

[Ben Town]

Let us know what you end up doing and how it works , maybe a pic
BT