Use a plastic screw on the coil ears to prevent false signals

[jabbo]

when the coil is bumped. Spider coils are not bad, but solid coils are thin plastic and they flex at the ears when the coil is bumped and if the screw is metal.

 

[woodwizard]

every detector I now own and have owned in past has had plastic bolt/nut to attach coil to rod -what brand ya swinging

 

[jabbo]

I used a brass screw on a new coil, then I bought a plastic screw and solved the problem.

 

[woodwizard]

was just wondering-glad ya got it working again -now if the weather would cooperate we'd all be in a better mood-good luck digging in the future

 

[Da Yooper]

Go to your local hardware store and pick up a plastic toilet seat bolt and nut . Works great for a spare. I keep one in my bag at all times.

 

[Flintstone]

Hi Woodwiz, Some of the older Garretts had brass screw, I have a ADS 7 and the coil are on with brass screws. When it gets warm so i can go out side i am going to drill them out for plastic.

 

[Dan-Pa.]

My understanding was of a metalic composition that did not interfer with performance and as long as coil moved with screw no problems. Having said the above always replaced them with a plastic screw and kept an extra if needed due to breakage. With todays plastics and technology all newer detectors I know of come with plastics screws that do no break easily..so thanks for sharing and those with older units might go to a hardware store and replace them as I can see a metal screw might cause depth or instability problems..

 

[ocean]

most metal detectors are rather dumb an unresponsive on stainless steel,try it! pass a small stainless bolt an nut past your coil when switched on an you will see.Use one of these in a pinch to replace a broken coil fastener.Most quality stainless is unresponsive to magnetic fields from your coil.
ive used them with success. an they dont rust,corroded or break.

 

[Adrian SS]

Yea!! Ocean,
At long last someone has re-discovered S/S bolts for their tectors.
You will find that they also are not bad with PIs as well.

 

[Cupajo]

Some grades of stainless will rust.

Those should not be used as the iron content may cause signal problems.

I think testing the bolt with a strong magnet before installing will determine if it will be a problem.

No stick to magnet/good to go!

Regards All,

CJ

 

[Adrian SS]

HI CJ,
Yep , high grade S/S only.
The bolts that I use only produce the faintest of murmurs from my tectors and if they do generate a response it is usually negative going in both VLF and PI.
I have been lucky and not had any show signs of rust.