Markheliops Posted February 16, 2014 Share Posted February 16, 2014 Hi guys and gals. A question for the Scammell boffins! An ex military 6 x 6 JUNIOR Constructor or The Scammell Tractor, 20 tonne, GS 6 x 6 (It's proper name as I'm led to believe)? Does anyone know what the GTW of these beast are? I'm am led to believe the civilian GTW of these impressive vehicles was around 100 tonnes, while the SUPER Constructor could achieve 150 tonnes plus! I stand to be corrected of course as this isn't really my field! As the manufacture date of this vehicle is 1955, no plates are available or obtainable for Special Types General Order (STGO). Would one of these vehicles by able to pull (legally) my 4 axle King trailer loaded with the Chieftain ARRV - 71 tonnes? Around 30 tonnes through the king pin. I know it would be slow-ish around 20-25 mph max on the straight and ear defenders would be essential but I have been offered one of these vehicles for a restoration project and I'm kind of liking them - butt ugly of course - but that's part of its charm. lol Any advice greatly appreciated. Thanks Markheliops Quote Link to comment Share on other sites More sharing options...
radiomike7 Posted February 16, 2014 Share Posted February 16, 2014 Mark, the ex RE 20 ton 6x6 is not the same as a Junior, the latter being a civilian 6x4 usually built with a 3 man coachbuilt cab but also available with the small Bedford type Willenhall cab. I am not sure of the weights but I doubt you can put 30 tons through the fifth wheel. The 6 speed Scammell gearbox was just about on its limit at 200bhp which rules out fitting something more powerful, 200 bhp at 100 tons is going to be somewhat pedestrian. Mike Quote Link to comment Share on other sites More sharing options...
John Comber Posted February 16, 2014 Share Posted February 16, 2014 "Butt Ugly" my goodness, it's lucky beauty is in the eye of the beholder Mark!! Now the Junior Constructor as my Pickfords is 6x4 box wing and cycle wing versions with walking beam front axle to assist tight access, rated at 100 ton as a ballast tractor , but I have pictures of mine working on its own grossing well over 100 ton. As for speed empty they will plod all day at 28 to 30 Mph empty, at the weight you suggest it's low box all the way you will be lucky to top 15 MPH. The constructors are 6x6 , I thought about 120 ton rating and the Super Constructer with either the Rolls or Albian engine and air change auto box circa 150 ton, I would expect the same turn of speed with them all. In so far as legality is concerned , if historic and no test heaven knows!! I keep my head down and say nothing. PM sent. Quote Link to comment Share on other sites More sharing options...
Markheliops Posted February 16, 2014 Author Share Posted February 16, 2014 "Butt Ugly" my goodness, it's lucky beauty is in the eye of the beholder Mark!! Now the Junior Constructor as my Pickfords is 6x4 box wing and cycle wing versions with walking beam front axle to assist tight access, rated at 100 ton as a ballast tractor , but I have pictures of mine working on its own grossing well over 100 ton. As for speed empty they will plod all day at 28 to 30 Mph empty, at the weight you suggest it's low box all the way you will be lucky to top 15 MPH. The constructors are 6x6 , I thought about 120 ton rating and the Super Constructer with either the Rolls or Albian engine and air change auto box circa 150 ton, I would expect the same turn of speed with them all. In so far as legality is concerned , if historic and no test heaven knows!! I keep my head down and say nothing. PM sent. Hi chaps - Thanks you for the info. Legally, a unit operating under STGO (and taxed as STGO) does not require an MOT or plating certificate. It would only need plating and testing if being used under Construction and Use Regs. I'm not considering dragging the ARRV all around the country but a run from The Hop Farm to Folkestone should be okay. Yes, very slow so lots of beacons and warning lights and possibly an escort. I was mistaken in thinking the motorways operated a minimum 30 miles an hour limit but from my research there is no minimum speed limit for the motorways. The law states you should not cause unnecessary hinderance to other road users! So I am happy with the legal aspect but it's the 30 tonnes through the King Pin and rear axle weights I am trying to work out. Quote Link to comment Share on other sites More sharing options...
John Comber Posted February 16, 2014 Share Posted February 16, 2014 Mark, just so you get a feel of speed and similar weight, here is youtube link of my Junior working at probably a similar weight to your proposal Much to others argument you are correct there is no minimum speed limit for a motorway, I have been stopped by the traffic police a number of times mainly to take a picture! And I asked the same question each time ,was I too slow. Good luck with your venture. Quote Link to comment Share on other sites More sharing options...
ferrettkitt Posted February 16, 2014 Share Posted February 16, 2014 Mark, just so you get a feel of speed and similar weight, here is youtube link of my Junior working at probably a similar weight to your proposal Much to others argument you are correct there is no minimum speed limit for a motorway, I have been stopped by the traffic police a number of times mainly to take a picture! And I asked the same question each time ,was I too slow. Good luck with your venture. After I watched the video at the end it had this below quite appropriate Quote Link to comment Share on other sites More sharing options...
AndyFowler Posted February 16, 2014 Share Posted February 16, 2014 Hi Mark , even if the old girls not gonna fit the bill for the Chieftain haulage I think you should still save her ! :-D:-D:-D:-D I feel my response may have been predicted :cool2: Quote Link to comment Share on other sites More sharing options...
radiomike7 Posted February 16, 2014 Share Posted February 16, 2014 Mark, just so you get a feel of speed and similar weight, here is youtube link of my Junior working at probably a similar weight to your proposal Did you ID the carrier (trailer) used? Quote Link to comment Share on other sites More sharing options...
N.O.S. Posted February 16, 2014 Share Posted February 16, 2014 I know it would be slow-ish around 20-25 mph max on the straight and ear defenders would be essential .... Sounds about right - but then you'd either have to go back for the trailer or get that pulled by someone else :-D Quote Link to comment Share on other sites More sharing options...
radiomike7 Posted February 16, 2014 Share Posted February 16, 2014 Sounds about right - but then you'd either have to go back for the trailer or get that pulled by someone else :-D Always handy to retrace your route with a Constructor in order to pick up the thrown prop........:cool2: Quote Link to comment Share on other sites More sharing options...
antar Posted February 16, 2014 Share Posted February 16, 2014 Mark I am a little confused over which Scammell you have been offered, the 20 ton was a ballast tractor with a Meadows petrol engine wheras the 35 ton was a tractor unit with a 3.5 inch pin 5th wheel coupling for towing RE plant trailers, equipped with a RR C6 diesel, which would certainly pull your trailer, but with only 185 BHP on tap would be decidedly slow. Why are you not going to use on of the 2 S26 tractors you have ? John Riley Quote Link to comment Share on other sites More sharing options...
Markheliops Posted February 17, 2014 Author Share Posted February 17, 2014 Mark I am a little confused over which Scammell you have been offered, the 20 ton was a ballast tractor with a Meadows petrol engine wheras the 35 ton was a tractor unit with a 3.5 inch pin 5th wheel coupling for towing RE plant trailers, equipped with a RR C6 diesel, which would certainly pull your trailer, but with only 185 BHP on tap would be decidedly slow.Why are you not going to use on of the 2 S26 tractors you have ? John Riley Hi John. I'm using the S26 to drag the ARRV around on long-ish journeys but I like the look of the Scammell. I think it would make a great exhibit hooked up to the trailer. It's a 1955 Tractor GS for 20 ton trailer (Army reg 82 BL 10). The truck is fitted with a Leyland 680 power plus, which in it's day was the most powerful engine you could fit. Originally as you rightly pointed out the vehicle was fitted with a Meadows petrol engine. It now sports a fifth wheel coupling with a 3.5 inch pin, fitted by a heavy haulage company. Mark Quote Link to comment Share on other sites More sharing options...
N.O.S. Posted February 17, 2014 Share Posted February 17, 2014 Painted mustard yellow by any chance? Quote Link to comment Share on other sites More sharing options...
Markheliops Posted February 17, 2014 Author Share Posted February 17, 2014 Painted mustard yellow by any chance? Quite possibly - but we'll keep that to ourselves for the mo!!! In all seriousness - the Scammell isn't for sale by the owner. As I know him and live a couple of miles away from him and have the matching trailer - he is willing to let me buy it for restoration as it's his baby and he'll know I'll look after it and get it restored. Quote Link to comment Share on other sites More sharing options...
antar Posted February 17, 2014 Share Posted February 17, 2014 Go for it, we all should at some stage in our life have the opportunity to drive a 6x6 Scammell with a gate change gearbox and 180 ish of horsepower on tap ! Quote Link to comment Share on other sites More sharing options...
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