fv1609

Ron I have no experience of magnetos my observations are just based on vehicle ignition. I think I measured the current flow in a typical ignition system whilst running was 7ma. I think that equated to a drop of 10v in an HT of about 7kV in a suppressed lead or lead with a suppressor. Over the years I often heard of people advising that suppressed leads should be removed & copper used & to use no suppressors. But I think some of that sprung from problems of resistive cables failing & in particular the termination of the inner conductor. I wouldn't have thought a magneto system would require a higher current as that would only increase electrode erosion, we all know higher current on a welder melts metal faster. As an aside at most shows I operate an amateur radio station on 50, 70 & 144 MHz on the lower two bands RFI is pretty extension & on some occasions wiping out quite strong signals. This interference can be homed in on with the yagi antenna long before I can hear or see the offending vehicle. So sometimes wonder if the ignitions systems are run with minimal suppression in belief of improved performance or whether the vehicles are being run to the original wartime spec. If it is the latter I would have thought it would have been an issue for wireless communication within a unit. Also no amount of camouflage or stealthy driving can disguise the onset of a vehicle up to a quarter of a mile away. I know this because I am in a radio group at WPR adjacent to the main road where I could detect on coming vehicles & then view them disappear along the main road. Given their speed I estimate that they could still be detected up to a quarter of a mile away with a directional antenna.

The incorporation of resistance in an HT lead is not just beneficial for RFI suppression but it helps curb the rate of erosion on the plug electrode. The current flow is very small & the introduction of a seemingly high resistance into the circuit results in a drop of only tens of volts which is minimal with an HT of thousands of volts.

Catalogue of Ordnance Stores & Ammunition (COSA) Section CG covers combat clothing, this was essentially the NSN reincarnation of Vocabulary of Army Ordnance Stores (VAOS) Section CG

Martin I've got some of those, which particular head/hand sets are you interested in? It also lists the IPCs for each & circuit diagrams.. Does your Cable Assembly Switch Electrical Screened (coiled) have the MOD plate with "2" struck through? If not there is an important mod (blue paper) The harness has some content in L 800

EMER TELECOMMUNICATIONS C 740 Clansman Audio Accessories. Data Summary. C 742 Clansman Audio Accessories. Technical Description C 743 Clansman Audio Accessories. Unit Repairs C 747 Clansman Audio Accessories. Mod. Instrs C 749 Clansman Audio Accessories. Misc. Instrs

It looks like the documents to look for are EMER WHEELED VEHICLES U 330/1 - 339/1 the Data Summary U 330/1 would give the details of associated publications eg parts list, servicing schedule, CES, UHB (if there was one) REME Museum would be best bet. PS There is AC No.60231 Servicing Schedule, Trailer, Recovery, Light. Sep.1968 but I don't off hand know if it is the correct one.

Most pictures & descriptions for Clansman installations in Rovers are for Series Rovers not TUL/TUM. Traditionally the layout for a radio installation in a Rover was not in EMER WHEELED VEHICLES nor EMER TELECOMMUNICATIONS but in EMER COMMUNICATION INSTALLATIONS. The Series Rovers were covered in sections M 050-059 to M 740-749 But the Clansman installations in TUL & TUM were Army Coded publications, below is the majority of them as at 1999.

That's two new members in the last half hour

There was a Humber FV1600 forum on yahoo groups that fell into disuse. I have migrated this across to groups.io There 68 members at the moment but new members are welcome to discuss & get advice on any Humber in the FV1600 series whether they own a Humber or not, it is not exclusively for Pigs. Many groups in various hobbies have made this change as the format is more user friendly & side steps the privacy concerns that some have with the earlier forum set up. Members can post pictures (that are relevant!) & create their own album https://groups.io/g/HUMBER-FV1600

There are some references to springs in the pages I've posted that may have similarities of function to yours. Thanks Adrian, as I said I know nothing about armaments

This is from the EMER ARMARMENT series B 520-529 So I don't know what you make of L2 & L3 in this instance? I think here L (meaning Land service) is the later incarnation of Mk.

There are large collections of EMERs on all subjects held by the REME Museum. I'm not into guns so sorry I may have got the wrong weapon, what is the exact military nomenclature of the gun?

Found another battery.

Bit of coverage in the Technical Description. There is also some advice in Unit Repairs, I'll do those when the battery on my camera has charged up again.

I wondered if there were any clues about the performance of the springs in EMER ARMAMENT B 528 although this is the Technical Handbook - Inspection Standard, it is only a Unit Inspection Standard & I can find nothing there to help you I'm afraid. I don't have it, but more details of performance may be found in EMER ARMAMENT A 521/33 Examination of Ordnance, Examination Data for Specific Equipments. EMER Armament B 522 Technical Handbook - Technical Description may have something or even in: B 523 Unit Repairs B 254 Part 1 Field Repairs B 254 Part 2 Base Repairs I have B 522-254, I'll try & find them & have a look. I know nothing about armaments so could you explain where the springs are located & what they do, this will help me narrow down the areas I should be looking for.

I found the technical content of MV Magazine good, I even used to read Graham Lycet's Jeep column! Because it focused on mechanical issues that had some commonality for tastes in all vehicles. I only had the privilege of having one article published on yes you've guessed it, EMERs but it focussed on the little known & little understood EMECs & EMIs. I don't find any MV mag nowadays that matches up to the technical level of MV M This MO only cropped up because of the remote control thread that was running reminded me of this Humber project was worth covering.

Yes the mirror arm was a good clue. As you will have observed this is a FV1609A which is the real & officially designated Humber, 1 Ton, Armoured, Mk 1 not to be confused with FV1611 etc that through ignorance assumed the label of "Mk 1". Often ignored is that many of these later Pigs have a cab contract plate that is correctly stamped Mk 2, which confuses some owners who realise their Pig was not up-armoured into what the Army incorrectly called a "Mk 2". Although this FV1609A has a hard top it is not the hard top of a FV1611, as this has a single pistol port at the sides. This single port each side is an indication of demountable armoured roof that was under consideration to role out with the FV1609A at the same time as introducing the FV1611 series. It was not found practicable & was discontinued. Apart from the RUC hard top conversions in 1960, the only other type of hard top around was one built not by FVRDE but the RAC Equipment Wing in 1957 as a replacement for the Halftrack as an ACV. It was found to be adequate but not ideal & the project was dropped in anticipation of the availability of the Saracen ACV. Anyway the RAC Humber hardtop had double side hatches that were quite large, so it is not this one. The trailer I assume is for generator to supply the additional electrical needs, as 25A from the dynamo isn't a lot of good. There are marker lights on the front wings & front & rear on the roof to warn pedestrians at Chertsey that the thing was on the move. I think the front width gauges are to help the operator as the wing edges would not be visible through the "Sportsview" camera. I suspect the steering column was controlled by a rack & pinion. I remember Dale Prior had a Champ with this on its steering column. The view of experts was that this was most likely a remnant of a remote control mechanism. I think there was a piece on it in the much lamented MV Magazine that was a super mag designed for & written by a collection of experts in their particular fields that was very hands-on for those who like working on their vehicles rather than just looking at pictures of pretty vehicles lined up at a show. Rather unlike the swish mags that are available now.

Richard yes indeed it is.

Yes Richard well done absolutely spot on! Any idea on the vehicle? There are a few clues in the first photo. The multi-lens camera is reminiscent of a BBC Sportsview camera of the 1950s & its position suggests it for the remote driver's benefit. Whilst the top camera looks to be rotatable & for a more generalised assessment of the area as Marvin the Martian suggested.

That could well be an application for this interesting experiment. My assessment of date would be 1958-59.

Sorry for delay Iain been out all day (radio junk sale - irresistible) Not GW nothing as sophisticated as that.

Maybe another view would help?

Yes you can't be too careful, they are out to get you!

Richard although there was such a kit & I do have the fitting instructions for it in a Bedford MW this not it & is not a night vision system just daylight. This larger view may help or maybe not.

This might give the game away.