Anyone adjust cart set up due to ambient temperature changes?

Interesting! By 'dragging' you mean the rear of the cartridge touches the surface of the LP?

I have a grandfather clock made in 1759, and it was not fitted with Harrison's new-fangled gridiron pendulum (1726), so I have to adjust it as in the heat of summer it can lose 1.5 minutes a day.  Once adjusted it keeps time to within 10 seconds a day

What kind of cartridge was this? The temps in my listening room vary greatly and I've never encountered such an issue, FWIW.

It seems the ability to tag members isn’t working…

Anyway. It’s actually part of the front structure that supports the generator (if that is the correct term)

The cart is an Aidas CU Durawood Bee. 

Could you tell which did the most good, changing VTF or raising the pivot? Any way , I don’t know what your baseline ambient temperature is, but an increase of 8 degrees F in our house would drive me away.

@lewm

The plan was to experiment first with the smallest change to down force. Then see if that, combined with a small change in VTA did the trick. If these small adjustments didn’t solve the issue then I was to send the cart in for evaluation.

-0.2g was just enough to do the trick but the VTA increase made the rake angle look a bit better.

so to try and answer your question, I guess downforce.

CORRECTION: the VTA adjustment was 2 playing cards so more like +0.5mm NOT 2mm

I live near the SoCal coast so 68-72 is common, but it can warm up quite quicky if the marine layer dissipates and the wind shifts the house can get to 78 or more if especially if we are not home. 

@cleeds @dogberry tagging you now

Tammy from AG said tags work they just don’t auto populate and turn blue

@macg19 yes, it worked and I got an e-mail notifying me.

I really don’t need too much heat, unless it is a Log Fire on Winters Night, then I can quite happily toast myself.

My listening space has been known to be 8-10 Celcius on a Winters Day and creep up to 18 -20 depending on how long the Room is occupied and Valves Amp’s are Powered On. With the Heating on as well the room can got to 24ish.

In the coolest Temp’ the Cart’ can sound a little off, but this can be a combination of both Valve and Cart’ attaining warmth and hitting their sweet spot.

I only know off Cart’s going Heel Heavy when their Suspension Wire has lost its optimised tension.

I recommend letting a trusted US Third Party Cart’ Service offer a assessment and correction if need be.

@pindac Thanks, I was planning having it re-tipped in 6 months or so whether it needs it or not so they can check it out then. Turnaround is fairly quick 

Thank you Mac. I had a vague idea that cartridge and speakers might be happier in a room with a fairly constant temperature, but I  didn't realize how important that was. I will take more care starting now.

I also looked at the Durawood, which has shown it has properties that is very stable in all ambient conditions it would be exposed to. The stability of the material is very useful where microns are tolerances that can effect sound being produced.

I have parts produced from a selected material that has an exceptional stability as a inherent property. This material is used a component that allows for the interface tolerance for moving parts, to be machined to the tightest of tolerances, using a spacing dimension that is not usually considered for a passive interface. The same material also has the most attractive Coefficient of Friction for the role to performed, which is a Win Win for how the end product functions as a whole.

@pindac

Cart is definitely faulty. It went from sounding great to skating across the record. Cantilever was moving laterally, a lot. Likely the suspension is shot. It is about to embark on a journey to Lithuania! 

I'll post the resolution and cost when I find out.

Hopefully it is only the Tensioning Wire/Wires that have lost the bite at their Anchor Point. 

Tension Wires will allow the Cantilever to become unruly, if loosened off.