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  #1  
Old 01-10-11, 00:28
Lynn Eades Lynn Eades is offline
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Default Control rods. Riveted U.C.

My idea here is to make this thread a resource of info for the various control rods in the standard MkI U.C.
Most of the rods are medium tensile 7/16" dia. with BSF threads (the throttle control rods are smaller)
If I have any measurements wrong please advise, and I will edit my mistakes.
It maybe be that correct lengths are in a parts book, and if so, someone might like to put all of them up here.
Until then, here are the finished cut lengths of some, to start with;

There are essentially eleven rods;
Five for the brakes,
Two to hold the power unit to the rear plate,
Two clutch rods, and
Two throttle rods (1/4" dia.)
All rods are B.S.F. threads.

The LONGEST brake rods are both the same (TL5014) length at 2153mm overall length, with 32mm of thread at each end.
The transverse rod (TL 2332) is 646mm overall length with 45mm of thread at each end.

The front clutch rod (TL2328) is 1125mm long overall length, with 60mm of thread at one end, and 40mm at the other
The rear clutch rod (CTL7111) is 1078mm overall length, with 32mm of thread at each end.

The two throttle rods;
the long one is 1040mm overall length, with each end having about 25mm of thread. (rear?)(CTL7112)
the short one is 973mm. thread as above (front?)(CTL2744)
Which ever is the rear one may vary due to different throttle bell crank arrangements with 21 and 24 stud motors. The front rod is the same in all applications.

The engine tieback rod (TL 881) is 585mm overall length. It has 40mm of thread at one end, and 110mm at the other.
It has a kink at each end, about 100mm in.

With regards the cam control rods, the length of the rod from tip of the thread to the center of the pin (long clevis end) is 687mm. this includes the 35mm of thread. This would be the total of CTL 2881 and CTL2882 (1941 parts book) if both were riveted together as one assembly (and any adjustment would be made at the small clevis end. This is here so that someone can make up their own rod assemblies using original clevises. I hope its all clear?

The short brake rods are 250mm overall length. I have 35mm thread on one end and 40mm on the other. I made this rod some years back so these dimensions will need to be confirmed.
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Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
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Last edited by Lynn Eades; 25-06-17 at 08:04. Reason: Cause I can.
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Old 01-10-11, 11:17
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RichardT10829 RichardT10829 is offline
Richard Harrison
 
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Well done Lynn.....this will help loads of folk, myself included ! i am missing the short rods that go from the brake pedal to the steering linkage bundle at the bottom of the steering column.

the steel used is it anything special ? reason I ask is the longer rods must get some pretty load on them and some steel is more flexible than others.... i have always wondered about this.
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__5th Div___46th Div__
1942 Ford Universal Carrier No.3 MkI*
Lower Hull No. 10131
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1944 Ford Universal Carrier MkII* (under restoration).
1944 Morris C8 radio body (under restoration).
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  #3  
Old 01-10-11, 11:51
Lynn Eades Lynn Eades is offline
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Default Rich

I'm not that sophisticated, I arrived at medium tensile, because it aint mild and you have to be able to cut a thread into it. Are there any metalurgists on the forum that can do a rockwell test?

I only put in the time and effort because I thought it might help some bloke on the other side of the globe wot talks funny .
I will get to the short rods (they are the only ones left) Are you in a hurry?
I'd like to hear from someone with an original engine tie back rod. The thread on mine seems very long. Is it normal?
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Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....
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  #4  
Old 01-10-11, 12:15
shaun shaun is offline
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Lynn, Thats all very handy info mate. the engine tie rods do have a long length of thread because you have to be able to wind the nuts a long way on the bars. This is so you are able to jiggle them through the hull and then through the block, does that make sence to you ?
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  #5  
Old 01-10-11, 18:48
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RichardT10829 RichardT10829 is offline
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no hurry at all Lynn..... and as always your efforts here are greatly appreciated.
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__5th Div___46th Div__
1942 Ford Universal Carrier No.3 MkI*
Lower Hull No. 10131
War Department CT54508 (SOLD)
1944 Ford Universal Carrier MkII* (under restoration).
1944 Morris C8 radio body (under restoration).
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  #6  
Old 01-10-11, 21:18
Lynn Eades Lynn Eades is offline
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Default Shaun, Rich,etc.

Richard, the short rods are there, but as stated need someone to check the details, as my sample, I made, and may not be accurate.
Thanks Shaun for the explanation. I havent got that far yet, so didnt know.
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Carrier Armoured O.P. No1 Mk3 W. T84991
Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6.
Dodge WC55. 37mm Gun Motor Carriage M6
Jeep Mb #135668
So many questions....
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