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Post Info TOPIC: Capillary Temperature Gauge
Jonathan Hill

Date:
Capillary Temperature Gauge


Capillary Temperature Gauge from Revington TR





















110895X Temperature gauge Special offer

Temperature gauge TR2, 3,3A, 3B,will also fit TR4, 4A.

Capillary type, black face, black rim, orange rotary needle.

Calibrated in degrees Celsius.52 mm diameter.

No exchange required, £24.95 + vat = £29.31



We suggest fitting RTR8155, this is a Brass adaptor which screws in to the thermostat housing & prevents the male nut on the capillary pipe seizing into the alloy casting, price £5,95 + vat +£6.99.



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Erik de Vries

Date:

Hi Jonathan, I've also seen this advertisement.


I do need a temperature gauge, and i've been looking around for prices in Holland.


At a company (which says to be the cheapest) they asked 230 pounds ex VAT!! for a rebuilt item without exchange.


Are the average prices in the UK about the same?


I was thinking about replacing the capillary gauge by an electrical one from a TR4, much cheaper.


This gauge is a bargain, it's a pity the gauge is supplied with an orange needle.


Erik



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Jonathan Hill

Date:

Hi Erik, I do not really know the costs but this seemed to be a very good deal and I am sure that a bit of cleverness could change the look of the dial. I was going to try and contact you for some advice , I understand that you have a Peerless with an opening bonnet , like a Warwick, I really would like to get soem pictures of how you did it. jonathan@rainmakercorp.co.uk

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Jonathan Hill

Date:

Erik , have a look at www.holden.co.uk

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Flash Frank

Date:

I saw this too, original temp gauges are rare as hens teeth at autojumbles, I've only ever seen them sold in a complete set of instruments.


 


However this is a 270 Degree instrument, (the needle moves 270 degrees) and the correct Jaeger is a 90 Degree movement, with the needle moving the other way.  I guess it would be possible to graft this and an original instrument together if you were really determined, but that assumes you have an original one to start with, and enough confidence to give it a go.


 


If you don't have an original, the TR4 instrument (as sold by Holden, and readily available at autojumbles for around a fiver) is the right needle orientation and travel, but the instrument face is wrong, it covers the needle pivot, and the needle is a bit too wide.  Some of these have flat, rather than the correct domed glass as well.  It should be possible to ease out the original instrument face and make a TR3 replica in very thin aluminium, and calibrate it in degrees F.  However you'd also need to put the matching TR4 voltage stabiliser in the supply circuit to get a reliable reading. I've had a go at this approach and have got reasonable results, but now I need to make it work with a Rover temperature sender.


 


However, I found a Chinese capillary replica at the International two years ago for £85.  It was one of the electrical stalls, and they'd had a small batch made and they were selling like hot cakes, even before they got put out on display.  A German chap standing next to me bought the last one, it didn't seem fair to snatch both of them.  It did need to be stripped apart and have the bearings freed off, and get recalibrated in a kettle, before it got installed.  The only thing it doesn't have is the little Jaeger logo.


 


Moral: drink less on Friday night, shop early on Saturday.....


 

FF

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Jonathan

Date:

Frank, would an original instrument work with a Revington capilliary? I have the 'strument but not the gubbins.

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Flash Frank

Date:

I'm not sure, without seeing inside the Revington item. 


I'd guess that the Revington needle is driven off a small gearwheel, to reverse the rotation and amplify the movement by 3:1 from the diaphragm which sits in the back of the instrument.  You'd have to remove the red needle, its bearings and drive gear, and fabricate a mount for the original needle, bearing and drive mechanism to mate onto the new diaphragm.  If the diaphragm is in a different place or a very different size to the original this could get very complicated, because you'll end up with more or less than 90 Degrees of movement.


Assuming that you'd managed to recover the original needle, bearings etc without completeley trashing it, and remove the red needle without damaging the diaphragm.


I'd say that modifying a TR4 electrical instrument would be far easier, and more likely to work, because you don't need to touch the mechanism at all, you just bend the needle out of the way to remove and replace the face.


I'll bring a modified TR4 gauge to Malvern so we can all have a look.


F



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Jonathan

Date:

Thanks for that, do we know anyone with the fingers of a balerina? Mine were made by Walls!

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nigel c

Date:

Had a lot of grief with capillary temp gauges in other cars and so went for a TR4 electrical set up when I first put it on the road.


(Another non-standard mod)


I found the response very poor and by the time it registered hot, I couldn’t see it because the steam in the cockpit blocked the view!


I have reconditioned the original one and it works a treat: smile: 


 



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Registrar

Date:

I'm almost sure there was an excellent article on repairing and calibrating broken capillary temp gauges in TR action. It may be on the technicalities CD that the TR Register produced a while ago. I'll try to root it out when I'm not covered in partially cured fibreglass. My silver Warwick used the TR4 electrical temp gauge with great success and it didn't look too bad either. It had the domed glass which always looks better in my opinion. The domed 2" glass is quite easy to get hold of though if you need one.  I found a chemistry lab supplier that sold 2" "watch glasses" you may remember them from school. You need to rummage through a pack (of 50 or so) to find the better ones but they are quite cheep. I should really be shrewd and sell them at the International for a massive profit and squander the cash on a breakfast in the main hall ! However Registrars are not supposed to abuse their position ! Mind you I know a man.............



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Jonathan

Date:


Reconditioned Temperature gauge for sale, This has the correct domed glass and ifs TR2 - TR3A


The number on the face gauge is X.80500/3 RT 70


The item is listed as new, but is actually a reconditioned unit and never used, (but it does work).


Will pack very well when sending !


 


http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=27383&item=4544620037&rd=1



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Erik

Date:

Thanks for the tip, Jonathan


I was the winning bidder for this gage, at 101 pounds.


Today i received the gauge and it is as new.


I know it's quite a bit of money, but in Holland i would pay at least double the price.


Regards,


Erik de Vries



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