yes, I'm using the latest CH coil. I got it very recently. that is disappointing if yours doesn't fit. sounds like there may be some QC issues to work out. have you tried asking for a replacement/exchange? I've only used the ceroma once but the CH coil fit that fine too. it's a more aggressive heater but flavor is muted compared to quartz
Please measure the depth of your Q housing, as well as your CH coil. There is a raised step at the bottom but that shouldn’t matter unless your coil turns counter clockwise (which it doesn’t, because it is CH). The bottom of the coil isn’t flat where the coil ends, so the bottom of the housing isn’t exactly flat either, so as to fit the coil. My q top only catches a few threads on the screw, but it sits flush with the housing and holds secure. Again, please measure. If it really doesn’t fit then I think your Q is defective and should be replaced
Don't understand why the issue is with the Q? The way I see it, heads are machined to precision, whether it is CH or qshop. Its the coils that usually has discrepancies.
Issue here seems to be an aged CH coil, not fitting the Q head. The op has insisted that he'll not try any other coil, besides the one he has. If this is the case, I don't think we can ever know for sure. Still, it's definitely more likely to be a coil issue all things considered.
What I'm seeing is someone who bought a Q head, expecting it work with their older CH coil but it didn't. I don't think any model out there will guarantee compatibility with coil not sold by themselves. Similarly, I don't suppose op can request a coil replacement from CH, cos it doesn't fit the Q. We're talking about products sold by two different companies who don't promise inter compatibility?
I agree with measuring dimensions but the easiest way is probably to test with a different coil. A Q head is more than 150 bucks. Why not spend 30 on a dhgate coil to be sure?
This is the best fit I can get with the 5-wrap CH coil, the top nut just catches the top threads and sits at an angle leaving a big gap all around. I am not satisfied by this and would never use it like this, I think the post and threads would break after a short time. The height of the coil is ~ 16mm, about the same as the depth of the housing so it should fit. I wonder if the coil sold by Qaromashop fits any better, I doubt it, it looks the same as the CH coil, does anyone here have it? I think you would need a coil that is 15mm in height but I am not going to start shopping for coils. Is anybody in the market for a slightly used Qaroma?
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Your first photo actually shows the problem quite clearly. Did you show this to the manufacturer?
Can you notice that the last wrap of your coil is sitting on the raised step of the Q? Try moving it to your right, before pushing it in gently. That last wrap needs to slide into the raised step and stay beside it. That raised step will act like a wall, preventing the coil from moving sideways to the left. According to manufacturer, this provides better contact but I'm not sure of the science behind it.
Hope you can see what I mean with this:
If you still can't get it in, it looks to be an issue with your coil. Might wanna get a new one to try with.