G8RPI

Looking below the engine cover on AF3008 it appears the bulkhead is made from horizontal planks. In the center section at least.

QL beat me to it. Tim needs some wire locking tips 😀

The bizare thing is that ebay UK prohibit military items: "Articles or services specifically designed, developed, configured, adapted or modified for a military application." https://www.ebay.co.uk/help/policies/prohibited-restricted-items/military-items-policy?id=4342 but they have categories foor military items. Oh and I 100% endorse what earlymb says above. I always use tarrif codes. For a lot of items it also saves the recipient paying duty (not applicable to GSP they do their own thing).

I think you will find they are all very similar. The No80 has a slight truncated cone at base but that won't be seen when int the storage or discharger. You could turn up in wood or 3D print the base bit if you really wanted it correct. At least the head is correct and works.

What aout these: https://www.tacticalgeartrade.co.uk/m18-smoke-grenade-dummy-model-kit-green.html https://wolfarmouries.co.uk/tmc-m83-smoke-grenade-dummy.html

The base tractors sell on ebay for around £2000 so I guess it must be worth half that for parts to support a restoration. As a working tug with the rust sorted and good tyres probably about £2 to £5k. But things are going green and a lot of operators would be looking at electric for a tug of that class. https://www.youtube.com/watch?v=JFB5bQo6Lwg

I'd blame autocorrect but it was all me....🙄

I'd be more concerned about the effect ATF could have on the rest system than OM-33 might have on the pump. The pump is probably easier to replace as well. OM-33 is a straight mineral hydraulic oil ISO-32 viscosity (I use it on my lathe, it's basically the same a as Esso nuto 32 that is specified). I can't see any problem with running the pump on a ISO 32 oil. ATF is different viscosity depending on type. Dextron III is thicker at 37 and VI is thinner at 29. OM-13 is thicker again at 47 cst. "Red ATF" is not a specification. If you do want to use ATF it seems Dextron III would be a better choice based on viscosity. Compatiblity with seals etc is another matter. Robert.

Normally PAL lock nuts (modern metric ones) are tightened 1/3 to 1/2 of a turn past when they contact the full nut. This should result in th flat face of the PAL nut distorting slightly. If there is no distortion there is no spring tension to keep it locked. Do you have a manufacturer and part number (not supplier stock number) for the nuts? This should give a route to data on the correct use of that particular nut. Robert.

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See photos for the details of the switch. As you can see it only moves a tiny mount due to a shallow depression in the disk. The disk is on the same shaft as the control knob. The tube is off with the roller in the depession. Slight adjustment of the switch position or bending of the lever arm may be all that is required. Looks like access on your sight is through the angled plate on the back of tthe lower section. Robert.

Hi, Good news that the tube is OK. The power issue sounds more like a problem with the microswitch that controls power to the tube. You are correct. It should be OFF, ON ND, ON with iris control. No way the tube should be powered all the time. Two possibilities, the microswitch is intermittent or something is out of mechanical adjustment. Robbert.

Hi, Can you see light through the sight with the Iris open? If you can the tube has been removed. Removing the plate above the eyepiece is a safe point of entry. This unit will use a XX1330 series tube, probably a XX1332. These are very good being a 2" microchannel plate "Gen II+" tube. The tube has built-in (potted) HT supply and runs from 6.5V DC. There si a simple 24V to 6.5V regulator in the sight. If you are lucky it will be this that has failed. IT can be repaired or even replaced with a LM317T based circuit. You need to check the voltage at the tube terminals or regulator output. Not had a chance to drag my sight out yet. Robert.

OK that is a new model to me. It is basically the L7A1 sight design adaptoed to fit in the L5A1 mount. Earlier versions used just an adaptor plate between the two. I have a couple of those adaptors. It is unlikey to need positive on two pins, particuarly if you are seeing no countinuity on pin C. You mention pin B twice, can you correct? I'll check the L7A1 body I have later.

Not sure about "a lot more horsepower than the Merlins". They are about the same. Range of 800-1500 hp for the Packard from 40 litres compared to 27 litres for the Merlin with similar power range. Both depending on exact model. Merlins thended to be heavier. Supercharger contributes to this. Need to be careful comparing figures though, what RPM? Sealevel or xx,000 feet? The Meteor might be a better comparison. Robert.