antarmike
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Posts posted by antarmike
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Re modifications to braking.
Are the track drive sprockets relatively easy to unbolt. (by which I mean are the side plates with the teeth separate from the hub?)
If the inner of the two sprockets was copied as a laser cut profile in a hard material such as EN8 etc, omitting the row of lightening holes just inside the teeth, Would the flat face, created, just inside the teeth be wide enough to run brake pads against, using a modified disc brake calliper system?
This would give secondary Hydraulic disc brakes that would stop the vehicle in a straight line. These brakes would only be used in event of failure of the steering brakes. As I read the rules no back up secondary system is required for the steering, just for stopping.
The disc so created would not be vented so would get hot quickly, but what we want is a safe way of stopping the vehicle, and not much more.
Using the drive sprocket as disc brake would mean that externally the looks had been modified (but using th inner sprocket it wouldn't be too noticeable,) but it totally overcomes problems with internal drive shaft failure that, if it were to happen would mean neither inboards discs nor an electric retarder on the Pack/ steering box shaft would work.
May not work if there is final drive reduction between Steering Unit and Track drive sprockets, because torque required to effect stopping would thereby be increased.
BUMP!! What I posted might be Billhooks, but surely someone has a thought or a comment on this idea?
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Don't forget that side lights should be no more than 5 watts for a filiment bulb. LED lights are much brighter and less wattage. If they are really bright it may be like driving with front and rear fog lights on all the time and we have all been following them at some point. If the LED lights are as bright as my head light i bought from home bargains you will be blinding people....
Actually I think that is incorrect. There is no wattage (or even intensity) requirement for sidelights. See Road vehicles Lighthing regs 1989 as ammended
For front position lamps see Schedule 2 part 1 8. (&9)
http://www.legislation.gov.uk/uksi/1989/1796/schedule/2/made
For rear position lamps see Schedule 10 Part 1. 8. (&9)
http://www.legislation.gov.uk/uksi/1989/1796/schedule/10/made
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and sometimes the Police would ask on meeting up to escort - "How fast can you go?"........"Well get going then!"
The original post you quote (#20) has been edited to correct an error. You will need to refer back to the original edited post to get the update.
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Overall tracks and engine side covers, all rare stuff and still Petrol. Would be nice in anyone's shed (apart from mine)
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Welcome from the padded cell.....
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I don't think most people driving normal cars have any idea what movement any other vehicle makes when turning. Low loaders will often move out to take a left hand turn, often this leaves enough space for the idiots to try and pass on the inside, and have their front end crushed as the truck turns.
Drawbar trailers with twin centre axles swing out at least as much as a tracked vehicle. The advantage of a 432 is that you don't just have a set of mirrors, but also have a commander, who should be watching both your rear and sides, watching for the unpredictables! A commander can not only tell the 432 driver what's going on around the vehicle through the intercom, but can also help indicate to other road users the intentions of the 432. Far better than any artic/low loader driver stuck 40' ahead in his cab!
Bearing in mind all track laying vehicles not in military service are limited to 20mph, that must slightly limit the potential disaster, although I'd suspect a Cent ARV running into anything at 20mph would not be pretty!
As mentioned in an earlier post, 432's in service have regular brake checks. There are also mandatory daily checks, such as track tension, overall track condition, condition of the drive sprockets, governor oil level, engine cut off pedal, tiller adjustment, in addition to all the normal levels, lights etc.
Jules
Maybe 20mph is theoretical..Is it adhered to?...Have you seen the Sussex lanes/ Cent ARV vid?
Yes I know it was escorted, scouted etc, I have been told already how careful everybody was being, I din't need telling again......but.....
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Regulation 11 Road Vehicle Lighting Regs
This reg covers colour of Beacon than can be fitted and the vehicles to which each colour can be fitted.
(k)blue light from a warning beacon or rear special warning lamp fitted to an emergency vehicle, or from any device fitted to a vehicle used for police purposes;
(l)amber light from a warning beacon fitted to–
(i)a road clearance vehicle;
(ii)a vehicle constructed or adapted for the purpose of collecting refuse;
(iii)a breakdown vehicle;
(iv)a vehicle having a maximum speed not exceeding 25 mph or any trailer drawn by such a vehicle;
(v)a vehicle having an overall width (including any load) exceeding 2.9 m;
(vi)a vehicle used for the purposes of testing, maintaining, improving, cleansing or watering roads or for any purpose incidental to any such use;
(vii)a vehicle used for the purpose of inspecting, cleansing, maintaining, adjusting, renewing or installing any apparatus which is in, on, under or over a road, or for any purpose incidental to any such use;
(viii)a vehicle used for or in connection with any purpose for which it is authorised to be used on roads by an order under section 44 of the Act;
(ix)a vehicle used for escort purposes when travelling at a speed not exceeding 25 mph;
(x)a vehicle used by the Commissioners of Customs and Excise for the purpose of testing fuels;
(xi)a vehicle used for the purpose of surveying;
(xii)a vehicle used for the removal or immobilisation of vehicles in exercise of a statutory power or duty;
(m)green light from a warning beacon fitted to a vehicle used by a medical practitioner registered by the General Medical Council (whether with full, provisional or limited registration);
(n)yellow light from a warning beacon fitted to a vehicle for use at airports;
It does not appear that there is a circumstance when a Privately owned Military vehicle, not being an AILV (Antar and the like) , that is of normal width and capable of travelling at more than 25 MPH should be using an Amber Beacon. (I can't actually see any legislation that allows an "in Service" Military vehicle to run with an Amber Beacon either!)
I feel sure that Escort vehicle will be interpreted as Vehicle escorting Wide Agricultural vehicle, AILV, or any of the other wide or slow STGO categories, but I too fail to find an interpretation for "escort Vehicle".
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No mention of amber beacons used to warn of overlength or overwidth loads then? They travel more than 25mph.
General rules are covered by
Road Vehicle Lighting Regs 1989
Main points seem to be ;_
Excecpt for emergency vehicles it is an offence to fit a blue beacon ( or one resembling it whether working or not. Reg 16)
Beacon fitted must be visible at any point a reasonable distance behind the vehicle.
May be be Blue Amber Green or yellow. Which color you can use covered by Reg 11. (see my next post)
Light must flash regularly at between 60 and 240 equal times per minute.
Minimum height from ground is 1200mm. (to centre of lamp)
It is an offence to run on an unrestricted dual carriageway on which it is lawful to travel at 50 MPH or more with a vehicle having four or more wheels having a max speed not exceeding 25MPH, unless this vehicle has at least one amber beacon fitted. Reg 17 This does not apply to a vehicle manufactured before 1. 1. 1947, or to a vehicle or trailer only quickly crossing the dual carriageway. I.e. Wartime vehicles incapable of 25MPH do not HAVE to show an Amber Beacon when on a 50MPH or faster Dual Carriageway.
For wide loads see reg 11 -2 (l) (v). This appears in next post and covers width's over 2.9m I cannot see provision for over length vehicles or loads. And although they do travel at more than 25MPH this is often not lawful. It is often requested of them by the Police Escort, but the Speed limit for an AILV can be either 20, 25, 30, 35, or 40 MPH depending on particular towing vehicle and the weight it is carrying.
The road itself may impose a lower speed than the speed limit applied to the vehicle. All Cat2 or 3 STGO are limited to 35 MPH on Dual Carriageway and 30 MPH on other roads (yes i Know that one is never observed, but that is the rule.)
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No change to Propane or Acetylene colours. Oxygen will remain black, but top few inches and dome will become white.
Good question. I'd always assumed acetylene, but thinking about it the shape is quite similar to propane bottle and presumably lighter construction? hence lower pressure storage, so darned if I know now. Propane was in use from circa 1919 for cutting steel.
Would the TMs and equipment lists give the answer? Ah - just checked stash of manuals and schedule lists oxygen and ACETYLENE regulators!
How heavy is your fuel bottle Adrian?
Propane is filled into cylinders under pressure in a liquefied form. The empty cylinder only has a few vapours. Acetylene is dissolved in a solvent (acetone or dimethylformamide), and this solvent is normally stabilised by being absorbed in a Kapok (or Agamassan) filling. An empty Acetylene cylinder is one where pressure has reduced in the cylinder as all the dissolved Acetylene has been released from the solvent. The vast majority of the solvent stays in the bottle as does the Kapok. It should not be possible to confuse an empty Propane cylinder with an empty Acetylene cylinder whatever colour it is painted.
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gary
This Utube shows as you say a problem, but, and please don't all shout me down, How often is running in convoy causing a problem?
I have experienced motorists who get stuck behind a slow vehicle at the back of the convoy, and their focus becomes "How do I get past this guy?" They are so focussed they do not see other vehicles ahead, and when the opportunity presents itself, they accelerate past the Tail end Charlie, in a mad overtaking manoeuvre. expecting a clear road, and when they pull in to complete the overtaking they are very fast and only then notice the next in convoy......
If we want to make ourselves safer should we stop travelling in Convoys?
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TBH, if your going to use motorways, I feel that you should be able to maintain 50mph.
Alot of wagons are limited to 52mph now.
I would not like to see abnormal loads banished off motorways, onto far narrower A roads.
Some abnormal Indivisible loads are limited by law to 20 MPH so you have a conundrum.*
If you want to stay within the speed limit associated with STGO AILV's then you may have to have two lanes of a motorway taken up by a 20 MPH load. If it is a three lane motorway HGV can't use outside lane, so they are in the bottle neck.......What do you do?
*Speed limit for an AILV can be either 20, 25, 30, 35, or 40 MPH depending on particular towing vehicle and the weight it is carrying.
The road itself may impose a lower speed than the speed limit applied to the vehicle. All Cat2 or 3 STGO are limited to 40 MPH on Motorways, 35 MPH on Dual Carriageway and 30 MPH on other roads (yes i Know that one is never observed, but that is the rule.
So ANY STGO Cat 2 or Cat 3 Vehicle cannot legally exceed 40 MPH when travelling on a Motorway. (And I believe that applies to Unladen Cat2 Cat 3 vehicles!)
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Does anyone know if spray on load liner (Speedliner???) can be successfully applied by DIY?
Is there a DIY version available? I am thinking of using it on the floor of my old land rover to protect it and hopefully reduce drumming noise.
I don't know if it requires a special spray gun or breathing apparatus. Any suggestions welcomed. Thanks.
If you go to their sites FAQ's it seems fairly obvious it is all done by agents, and there is facility for self application.
http://www.speedlinereuro.com/productfaq.html
http://www.speedlinereuro.com/dealerfaq.html
But why don't you contact them and ask them directly, That would seem the way to find out, surely.
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Good topic for discussion Mike. ......
This was part of another thread this afternoon, and the mods decided to split it off, If it works out as a useful "free standing" thread that is good.
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The thread got split by the Mods this afternoon, Only just noticed it and now there is a separate "Highway speed Limit" thread. However this part of one of my posts got moved at the same time and really I think it should be here because it covers why I think this issue is so difficult to solve, so I am pasting it back in..,. I hope the Mods don't mind
If I have been a little flippant I am sorry, but my experience after 30 years of moving slow vehicles to shows is in reality there is virtually nothing that has any real effect, and these accidents will always happen.Research suggests that something close on 95% of all motorists have "micro-sleeps" were for a second or two up to periods nearer 30 seconds they fall asleep while driving. Often they are completely unaware that it happens to them. We are not talking about occasionally, with some people there are several of these events on each and every journey. You do not have to feel tired or exhausted to experience a micro-sleep.
.......Humans are not adapted to driving and we are not very good at it. Accidents will continue to happen.
Or as I said she could have been mid Micro-sleep. Airline pilots in Micro-sleep do not respond to flashing warning lights on their instrument panel. You can't expect any better from a car driver...... -
Reckon you should paint green and Yellow, then Olive over the top, then put on a few bashes through the paint to show the base colour through the chips......here and there......
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I have googled everything I can think of, and presumably so have you... Camoflage netting over it all?
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Ok, here's a theory:
It's on a bit of a hill.
They chocked in front of the trailer to stop it rolling downhill
They also chocked to the rear to stop the trailer from rolling toward the tank while winching.
As winching started, the trailer rolled back slightly and the rear chocks skidded until they found purchase on the ground.
When the tank left the ground (just before the photo) the trailer rolled back toward the front chocks slightly (it may even still be moving in the photo...)
Any good?
I can't see chocks at the rear of the trailer.
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Seems to be the civilian colors (can't Americans spell??) too
http://www.tpub.com/content/construction/14265/css/14265_30.htm
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And what about someone like me who regularly gets his posts removed by the Mods, shouldn't removed posts be included in the count?:cool2:
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;)So which am I?:angel: -
Is a date applied to construction and use reg's that allow grand father rights as such to early vehicles?
See post #15 of this thread.
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I am not sure, Now in Law there are two classes of Agricultural vehicles, Slow Agric vehicles and Fast Agric vehicles, I don't know how this alters the position with Motorways.
okay Agric vehicles AND wheelchairs....
Prohibited vehicles. Motorways MUST NOT be used by pedestrians, holders of provisional motorcycle or car licences, riders of motorcycles under 50 cc, cyclists, horse riders, certain slow-moving vehicles and those carrying oversized loads (except by special permission), agricultural vehicles, and powered wheelchairs/powered mobility scooters
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I stand (well - actually sit) corrected - thanks Mike.
When I was younger I thought I recalled seeing a 30 minimum sign at the entry to motorways but doing some digging brought this up which makes for interesting reading..
http://www.safermotoring.co.uk/there-minimum-speed-motorway.html
I had to look it up! I think the 30 MPH on the flat I referred to is actually from the rules governing when Amber beacons can be used...
As you say, some road can have minimum speeds applied to them, and yes I seem to remember the motorway signs....
I have been on the M4 more times than I want to remember with Antar and two trailer, once going through I contraflow where I was signed to straddle both lanes. I felt very bad going 10 miles without anything able to pass me!
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Thats the point I've been trying to make since 2007!! Sticking it on a low loader only increases the speed at which it can travel - from 20 mph to 56 mph max.
On the other hand it doubles or even trebles the length of the vehicle on the road leading to problems on tight corners, it increases the loading on the road surface as - instead of the lower ground pressure from the tracks - the weight of the vehicle PLUS the low loader is point loaded onto the road surface via tyres.
And at the end of the day it is still the same width!!
OK - for a long journey, say from Central England to Bovvy, a low loader makes sense due to the speed issue. But for short hops of less than - say - 10 to 20 miles it makes no sense at all.
Any shortcomings of a vehicle compared to modern ones should- must - be taken into account by the owners as a matter of course. But as such are MV owners any worse than those who drive veteran/vintage vehicles with rod operated brakes that are prone to fading/loss of adjustment. I seriously doubt something like a 1919 Ford Model T complies with any C&U regs anywhere.
Any driver - no matter what he is driving should operate the vehicle with due regards to road conditions, other road users AND the limitations of his vehicle. Yes, owners of 432's could establish what the MoD did to retrofit secondary braking system to the ones still in service provided the info isn't classified.
It would be interesting to see how many 432's have been involved in accidents and of that number how many were due to brake failure compared to a total miles covered figure for all 432's.
Then compare that to the modified ones.
But as I have said to you before, Low loaders are common and general road users know how they steer. Road users in general are not used to the back end of a tracked vehicle swinging out as the track rotates about the centre of contact. ( Not that an FV432 can Neutral steer, (am I correct?)) but there is an unexpected tendancy for the back of the track to move in the opposite direction to the turn. If meeting a turning FV432 or Passing one that is turning Left at a junction, there is an unpredicted movement that a general motorist does not expect. Fv432 is wide already, without this extra width being created by the swing.
On a low lowloader this are more predictable.
registraton marks
in I may be stupid, but......
Posted
Form INF 34 says " (If the V5C indicates that the vehicle was registered from 1 January 1973 up to and including 7 January 1973, we will let you register
it as a historic vehicle, based on the assumption that the vehicle would have been made in the previous year).
Not much help, but I put it up because some 1973 vehicles do get Historic Taxation.