Classic II

[oldsparta]

Hey guys I am new to the forum but not to metal detecting, have been swinging for cw relics around 9 years, and have just recentley started tinkering with machine adding this and that, so have worked and some have not.

I have an old classic II that I dont use anymore, and was wondering if someone could post some pics of the inside of theirs that has had the GB and threshold mod done to it, I add an adjustable volume control but would like the mods listed above.

The machine is basically new as i hardly ever used it, and I would like pics so I dont "screw" anything or burn anything up. Oh I cant read skematics,lol.

Any help would be greatly appreicated.

Thanks
Oldsparta

[oldsparta]

ok well I figured out that one of the standup pots is the threshold and I take it that the lay down pot behind that is the GB pot?

I guess I should use a 200k turn pot for the threshold and a 10k 10 turn pot for the GB does that sound right?

[Merc]

Your values sound correct. I checked the Classic 3 schematic. I would suggest if you are going to bring the GB control to an exterior control that you keep the wires as short as possible. Threshold also but it's probably not as touchy as the GB. Also, exterior GB controls are usually multi-turn to give you finer control. In my area, the ground balance changes very little from site to site so very little travel of the pot gets used.

Merc

[kt315]

Oldspatra seems to want to denude business from Mr.Bill off... if every newibe will get the commercial info he will be a millionaire on the mods!!!

[oldsparta]

Oldspatra seems to want to denude business from Mr.Bill off... if every newibe will get the commercial info he will be a millionaire on the mods!!!

I have no intrest in doing mods to other peoples machines, for I dont have the funds to buy them a new machine if I burn up a board, I just like to tinker, and figured I would give it a try on my own machine. Thanks for the pic, I got everything finished tonight. May have gained 2" so I am pleased.

Thanks
Oldsparta

[kt315]

I have no intrest in doing mods to other peoples machines, for I dont have the funds to buy them a new machine if I burn up a board, I just like to tinker, and figured I would give it a try on my own machine. Thanks for the pic, I got everything finished tonight. May have gained 2" so I am pleased.

Thanks
Oldsparta

Mr. Bill Crabtree is here on the forum. I do not know as to lead myself in the case we share his biz information.
http://www.surfscanner.com/Surfscan3/IDXPhotos.html
Modifications cost: $85 .
ground balance, threshold, & depth boost


Modification pricing does not include return shipping.

[Mr.Bill]

If your going to do it, do it right.

Your pot values are wrong.

Use. 100k linear on threshold
Use 50k linear on ground balance.

Save your money, you won't need multi turn pots.

Good luck

Mr. Bill

[oldsparta]

Thanks for all the help guys here is the final result, I built a custom straight shaft from aluminum and added the thumb controlled pinpoint. I think it turned out pretty good.

[STEFY]

Ok, very nice mod, can you tell me what benefit you have had with the treshold?
Mine (IDXpro) Deje the GB but not the treshold, and I hesitate to add it!
Thank you in advance