Hello, a long story cut very short, can this crack be repaired by a well qualified welder with a host of experience or is this low speed drum destined for the bin/shelf/momento cupboard ?
See pictures below.
Any thoughts are greatly appreciated.
Dave, I wouldn't use it. Unless you've got a lot of spare time and don't mind re-work. There's a lot of good used drums and transmissions out there.
Drum bearing gapping.... l have the following gapping now which to me seem quite high for the drums :-
Reverse to Low speed drum (bushings) 0.007"
Brake drum to Low speed (bushings) 0.010"
This will explain the severety of the side movement..what is acceptable to gap, my thought has always been 0.002-0.004"
That drum is dangerous. I don't think even the wizzard could fix it so that it would be servicable. There are plenty of good low speed drums available.
You might get a strong weld, but it would be very hard to balance it and you would have a bad vibration in both low and high. Since you have everything apart, it would be best to use either a good used drum or get a new one and rivet it to the gear.
I would stash it away. There may not be "plenty of drums out there" forever. It is fixable, balance would not be a problem. But getting a better one is a better idea for now. Of course, I remember when rear axle housings were so common that many people gave them away for free to make jack stands out of. Everybody (but me?) said they would never need to actually EVER have to repair one. Now we have threads on the forum on how to set up and straighten them. Who would of thought?
Drive safe, W2
OK thanks for those suggestions, NOW to the important thing...
Who's got a good one with the boss in non cracked and sevicable condition/unscored?????
Try Dave Huson. He sells good serviceable drums for a fair price. He's based in Colorado, USA.
Clearance in a Model T transmission drum bushing is an emotional problem unless its too tight. The drums will find their own centers as the gears are loaded. The transmission is the most rugged member of the Model T driveline. The crankshaft is the weakest member.
Found and thanks, l'll have a set soon and be well on the way to rebuilding.
Cheers David Dare.