joe2003 Posted February 25, 2013 Share Posted February 25, 2013 Some questions for Brian and others who have tested the heads for the vivi's. Have yall found the ohm ratings to be very optimistic? I have coil heads from a few different places and they all seem to be very inconsistant.Some have been up to 1 ohm higher than the printed rating. I suspected my meter the first few times but vaping confirmed that it was closer than the stated ohms on the head. The 1.8 that read 2.8 was definitely weak in the vape lol. So is it my meter and my imagination or just my bad luck? Have their been some bad batches maybe? Any input on these is appreciated. Link to comment Share on other sites More sharing options...
mcquinn Posted February 26, 2013 Share Posted February 26, 2013 I doubt that there is much Q.C. on the components .The nichrome wire is likely the culprit.I would imagine they just measure off a predetermined length for each coil irregardless of the resistance per foot of the batch.They still work better than anything else I have found. joe2003 1 Link to comment Share on other sites More sharing options...
Brian Posted February 26, 2013 Share Posted February 26, 2013 I've found the same thing recently too Joe. The coils I've tested did drop down 0.3 to 0.4 after a couple of hours use, but were still higher than the stated resistance even after that drop. I've had some 1.8ohm coils measure 2.4 and drop to 2.1 after some use. 2.4 ohms measuring around 3 and dropping to 2.7 after some use. I've got some 2.8ohm coils that were right on the nose. It's disappointing especially since the coils that come with the nova kit were all right on spec (1.8, 2.4 and 2.8). Link to comment Share on other sites More sharing options...
joe2003 Posted February 26, 2013 Author Share Posted February 26, 2013 Thanks for the responses. It's not really a deal breaker for me since I have multiple VV devices it's just irritating because sometimes I want to use a small setup like a 650 ego and have to meter everything to get one that will have enough watts to satisfy me lol. Not really ready to try rolling my own yet either, I'd have to get a lighted magnifying desk unit first lol. Link to comment Share on other sites More sharing options...
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