Regarding the long wheelbase heavy haulage artic- it looks like an ordinary jeep dolly arrangement, IE the pin load is spread over four axles instead of two. Regarding the length of the dolly and the prime mover, I will stick my neck out and assert that they had a weak bridge to cross.
Regarding the unusual coupling arrangement- maybe it was temporary, so a bodge was employed, until the tractor could be made back into a rigid? I don’t believe that it was not articulated at the usual places- if the tractor and dolly were one complete rigid, how would it steer at all?
[zb]
anorak:
Regarding the long wheelbase heavy haulage artic- it looks like an ordinary jeep dolly arrangement, IE the pin load is spread over four axles instead of two. Regarding the length of the dolly and the prime mover, I will stick my neck out and assert that they had a weak bridge to cross.
Regarding the unusual coupling arrangement- maybe it was temporary, so a bodge was employed, until the tractor could be made back into a rigid? I don’t believe that it was not articulated at the usual places- if the tractor and dolly were one complete rigid, how would it steer at all?
Going by the photo it looks like it’s solid mounted to the ‘prime mover’ that wants to be a tractor unit by those strange looking posts attached to he chassis and one point of articulation at the front end of the trailer gooseneck ?.
It’s only after they put it all together that someone probably said that coupling is way too far forward what happens to the dolly wheels when it turns and how much weight have we actually removed from the prime mover’s axles.That’s when someone with a west midlands accent says it’ll do.
[zb]
anorak:
Regarding the long wheelbase heavy haulage artic- it looks like an ordinary jeep dolly arrangement, IE the pin load is spread over four axles instead of two. Regarding the length of the dolly and the prime mover, I will stick my neck out and assert that they had a weak bridge to cross.
Regarding the unusual coupling arrangement- maybe it was temporary, so a bodge was employed, until the tractor could be made back into a rigid? I don’t believe that it was not articulated at the usual places- if the tractor and dolly were one complete rigid, how would it steer at all?
Going by the photo it looks like it’s solid mounted to the ‘prime mover’ that wants to be a tractor unit by those strange looking posts attached to he chassis and one point of articulation at the front end of the trailer gooseneck ?.
It’s only after they put it all together that someone probably said that coupling is way too far forward what happens to the dolly wheels when it turns and how much weight have we actually removed from the prime mover’s axles.That’s when someone with a west midlands accent says it’ll do.
It would have been interesting reversing it into a tight space.
Carryfast:
It’s only after they put it all together that someone probably said that coupling is way too far forward what happens to the dolly wheels when it turns and how much weight have we actually removed from the prime mover’s axles.That’s when someone with a west midlands accent says it’ll do.
It would have been interesting reversing it into a tight space.
At face value it would have been interesting trying to turn it any which way but straight ahead or straight backwards if that dolly v prime mover doesn’t articulate anywhere.Picture the dolly axles and prime mover axles fighting against each other as it tries to turn.
Carryfast:
It’s only after they put it all together that someone probably said that coupling is way too far forward what happens to the dolly wheels when it turns and how much weight have we actually removed from the prime mover’s axles.That’s when someone with a west midlands accent says it’ll do.
It would have been interesting reversing it into a tight space.
At face value it would have been interesting trying to turn it any which way but straight ahead or straight backwards if that dolly v prime mover doesn’t articulate anywhere.Picture the dolly axles and prime mover axles fighting against each other as it tries to turn.
It must articulate. The distance between the axles dictate that otherwise, it is stuck in a straight line for ever. I reckon those two pegs on the AEC chassis locate in a loose pocket in the dolly frame. No point fitting a proper fifth wheel because, at the end of that contract, the vehicle would have a body mounted on it and be put back on normal duties.
[zb]
anorak:
I reckon those two pegs on the AEC chassis locate in a loose pocket in the dolly frame. No point fitting a proper fifth wheel because, at the end of that contract, the vehicle would have a body mounted on it and be put back on normal duties.
That’s the only logical explanation.I get it.In a turn it only pulls on one post while the other slides within it’s ‘pocket’/ ‘track’ relative to the trailer ?.
This 6 wheeled trolley bus is an AEC 664T with bodywork by English Electric, and is being loaded on to a ship at
Liverpool docks in 1937, bound for Moscow. English Electric was formerly ■■■■,Kerr, from Kilmarnock, and was
the largest manufacturer of tramcars for many years. Among other locations, they had a factory on Strand Road
in Preston, just 20 miles from Liverpool, so I assume that this trolleybus bodywork would have been built there,
to keep the towing mileage to a minimum. Perhaps the chassis was delivered from the AEC factory to Preston
by rail, rather than a 220 miles road journey on a towbar.
The standard AEC practice for towing trolley buses was to use one of the AEC Works Transport vehicles, usually one delivering to an AEC depot near to where the trolley bus was going. AEC and Leyland Motors had a joint trolley bus assembly venture called British United Transport long before Leyland took over AEC.
Ray Smyth:
This 6 wheeled trolley bus is an AEC 664T with bodywork by English Electric, and is being loaded on to a ship at
Liverpool docks in 1937, bound for Moscow. English Electric was formerly ■■■■,Kerr, from Kilmarnock, and was
the largest manufacturer of tramcars for many years. Among other locations, they had a factory on Strand Road
in Preston, just 20 miles from Liverpool, so I assume that this trolleybus bodywork would have been built there,
to keep the towing mileage to a minimum. Perhaps the chassis was delivered from the AEC factory to Preston
by rail, rather than a 220 miles road journey on a towbar.
Picture: Stuart Marsh.
Talking about towing trolley buses. Heres one on a mission in 1966,being towed 1,000 miles.
Australia or NZ I suppose this old timer comes from, bet it done some work in its time, the 5th Wheel looks as if its been removed and plonked back on the chassis! Franky.
There`s an article in Vintage Roadscene this month which questions the AEC/Leyland merger and why or how it came about , the author has some interesting theories
ramone:
There`s an article in Vintage Roadscene this month which questions the AEC/Leyland merger and why or how it came about , the author has some interesting theories
It would be interesting to find out if any of them fit the idea of deliberate sabotage because of AEC presenting a perceived, if not very real, threat to the Leyland/Daf association especially the interests of the latter ?.My theory is that it had already been decided behind closed doors that DAF was going to be the winner in that.
ramone:
There`s an article in Vintage Roadscene this month which questions the AEC/Leyland merger and why or how it came about , the author has some interesting theories
It would be interesting to find out if any of them fit the idea of deliberate sabotage because of AEC presenting a perceived, if not very real, threat to the Leyland/Daf association especially the interests of the latter ?.My theory is that it had already been decided behind closed doors that DAF was going to be the winner in that.
ramone:
There`s an article in Vintage Roadscene this month which questions the AEC/Leyland merger and why or how it came about , the author has some interesting theories
It would be interesting to find out if any of them fit the idea of deliberate sabotage because of AEC presenting a perceived, if not very real, threat to the Leyland/Daf association especially the interests of the latter ?.My theory is that it had already been decided behind closed doors that DAF was going to be the winner in that.
The author has a few theories
And not one of them will have any credibility or substance.
that they had a weak bridge to cross.
