tvanwho Posted April 29, 2017 Share Posted April 29, 2017 The 6x9? Platypus coil works on my TDi ,BUT the coil ear holes were too small for the Whites bolt so I had to drill them out. The 9 x 14 Nuggetfinder coil fits just fine tho. They both seem to work ok.I have an original TDi. No nuggets yet. Coils are cheaper to buy in winter so I bought several used larger Nuggetfinder coils to try out . Just need to get my butt to Arizona now...but nervous about potential TSA hassles? Link to comment Share on other sites More sharing options...
Rod K Posted April 29, 2017 Author Share Posted April 29, 2017 Rob, i am going to get the 5"x9" as soon as i can. John also recommended not going any larger than 8"x12" when i chatted with him about his coils the other day. Thanks to you and the others for their replies, info, experiences and advice. Link to comment Share on other sites More sharing options...
MikeT Posted April 29, 2017 Share Posted April 29, 2017 Highly recommend the MJ coils. Have a pair of folded 8's. Between the coils and the Reg mods, the detectors run beautifully and do find gold. Mike 1 Link to comment Share on other sites More sharing options...
Rod K Posted April 29, 2017 Author Share Posted April 29, 2017 Thanks Mike. I am going to get at least 1 or 2 of them as soon as i can. Link to comment Share on other sites More sharing options...
roadapple Posted May 2, 2017 Share Posted May 2, 2017 The TDI SL has battery power of about 12volts and the Standard TDI and TDI Pro have battery power of 14.4 volts. This might make a difference in what coils will or will not work with the detectors power output ? I have watched video of the TDI Pro over in OZ with the larger nugget finder coils, hope to hear if the Detech large size mono coils can be pushed to work with the 14.4 volt TDI's. Link to comment Share on other sites More sharing options...
AussieMatt Posted May 2, 2017 Share Posted May 2, 2017 Heres some testing on a number of coils on the TDI. May be of interest? https://www.prospectingaustralia.com.au/forum/viewtopic.php?id=21209 2 Link to comment Share on other sites More sharing options...
Steve Herschbach Posted May 2, 2017 Share Posted May 2, 2017 Amazing series of tests, rare to ever see anything like that. Thanks for the link AussieMatt! Link to comment Share on other sites More sharing options...
Geotech Posted May 2, 2017 Share Posted May 2, 2017 On 4/28/2017 at 10:14 PM, Hard Prospector said: It is said that Dan Geyer understood the Eric Foster design and potential better than most anybody. It would have been interesting to see where Dan would have taken the TDI series by now had he not passed so suddenly several years ago. I was fortunate to work closely with Dan for a few years, he taught me a lot. But, no, he & I agreed the TDI design had gone about as far as it could. Link to comment Share on other sites More sharing options...
Jim in Idaho Posted May 2, 2017 Share Posted May 2, 2017 11 hours ago, roadapple said: The TDI SL has battery power of about 12volts and the Standard TDI and TDI Pro have battery power of 14.4 volts. This might make a difference in what coils will or will not work with the detectors power output ? I have watched video of the TDI Pro over in OZ with the larger nugget finder coils, hope to hear if the Detech large size mono coils can be pushed to work with the 14.4 volt TDI's. I've been running a 'reidman" 16.8 volt pack in my SL for about a year. No problems so far. Haven't done any tests to see if the extra voltage helps. Jim 1 Link to comment Share on other sites More sharing options...
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