Will the F75's recovery speed be trimmed down

[BarnacleBill]

to make it less twitchy in tough ground than the T2? Will that make the F75 more "Fisher like" in it's behavior? As the F75 is supposed to be a blank sheet design, CZ speed may not be such a bad thing...read on.

In testing various detectors, I like to compare their recovery speed for use in high iron environments. Here's a test I undertook last year on various machines, and some of the results may be a little surprising if you have not seen them before.

Target Masking Tests
**************************

To provide a measurement of iron masking and target recovery speed, a test was devised which used the following:

1.A child's two person Swing set was enlisted to provide a means of ensuring a uniform coil swing speed. But in this instance the coil would remain stationary and the targets swing over the detector coil.
2.A rusty nail and nickel would be used as the targets, with the space between them varied to determine the distance masking occurred.
3.The machine was determined to have read the target(nickel) correctly when a non-ferrous signal tone was emitted by the machine.
4.The Swing was pulled to the same height and released. The Swing was also allowed to make three full passes before a reading, to make sure a constant speed had been reached, and to mimic the coil having swung over other targets.
5.All machines had Disc set to iron reject and max sensitivity, with the exception of the Baron which was left at factory default.
6.Each test was repeated three times in a row once the masking point had been established for the sake of accuracy. Obviously the tone was only noted in one direction after the coil passed over the nail, then the nickel.
7.Target to coil distance was 5 inches.
8.Please note that this is an air test, and ground minerals did not play a part in the machine responses.

[attachment 38923 swing1.JPG]

[attachment 38924 airtest1.JPG]

The Baron with the 10 inch concentric coil has to be the major surprise, and the old reliable CZ-20 ain't too shabby. If anyone doubts the results, the setup is all their in black and white, and you can repeat them for self assurance.


HH
BarnacleBill

 

[Jackpine Savage]

Hi Bill,

I have not used the T2 so I do not know what sweep speed(s)work best in high iron. They are said to have a fast recovery but there reaches a point with any detector of how fast you can sweep in high trash situations regardless of how quick it is reputed to be. I.M.O.and experience if the optimum sweep requirement for best depth doesn't match the detectors recovery or response time sweep requirements you will miss a few deeper co-located targets. Some will say that when hunting in iron you won't see the deep ones anyway and that my point is a moot one. But, I say differently as there are no absolutes in detecting.

Some machines prefer a moderate sweep for best depth but lag a little in recovery time so they do not make the best choice as a trash hunter, the XL Pro is a good example of that. Others like the CZ's, Multi Freq ML's and a few single freq VLF's (the Minelab Advantage and Tesoro V & C come to mind) get very good depth at the slower sweep needed to hunt effectively in iron/trash. So far I have not seen any reports that the T2 is pulling the deep coins out of iron or other trash. Sure deep on welics but, aside from myself there aren't many relics around here

Will the F-75 have similar performance to the T2 as I have been told or did FT wave a magic wand over it to gives us "coin shooters" something we will desire? Only time will tell who FT is trying to please, us or them welic hunters. One thing for sure it will not be all things to all people.

Tom

 

[vlad]

n/t