Looked at two separate lots of instructions in band boxes today. One sad install rivets running parallel with drum. The other said install across the drum so as not to wear a groove in the drum? I have always leaned toward having them split so they run parallel with the drum but I have seen grooves worn in drums? My engine rebuilder and I differed on our installation method. What way do you install and why???
I was always taught to spread them to the width of the band not the length. I can't find the thread but some folks actually cut the bands leaving a space between 4-5 & 7-8 based on a clocks face. I've never done that but am intrigued by it.
I was taught to install them across the drum. This came from a professional T guy with decades of experience, so I went along with it. I do think it's less likely to score the drum than doing it the other way.
Occasionally brass plated steel rivets have been supplied with band linings. They may account for some grooves?
Trying to use the band for some time after the lining really should have been exchanged may also cause extra wear from the rivets since there isn't any cushioning from the lining when it's worn away and the rivets would then be the main braking agent on the drum..
Installing wood liners necessitates drilling "pilot" hole, countersinking wood on drum side, installing rivit thru lining then spread tangs against metal band..... just the opposite of fabric liners.
Have done 4 sets this way, as per installation instructions, no visible scoring after many miles of service.
During WW2 and for some years after band sets came with steel rivets. This could be why we see drums with groves in them. The groves do not seem as prevalent on drums that only had brass rivets in the lining. Murray Fahnestock's book "The Model T Ford Owne"r shows the tangs spread across the lining.
I have two thoughts on this.
First, the rivets must be brass. Easy to check with a magnet.
Then, the tangs must be bent right over and pounded well below the surface of the fabric. I use the ball on the back of a ball pein hammer for this. If the rivet then begins to rub on the drum in service, the bands need replacing. The brass rivets will give you some insurance against this, no matter which way the tangs are set. They will not cause damage to the drum, being softer then the casting.
I could be wrong, again!
Allan from down under.
The rivet should come out of the lining, and curve around and head right back in the lining, and then be seated.
That way, the lining will not come off the rivet, and the end of the rivet will be hide in the lining.
And always crossway to the drum.
I wish I had Herm's riveting press. I purchased one of the riveting hand tools from a vendor. They aren't made to the highest standard of quality but a little patience and they do a pretty good job. Crosswise to the band. You've got the force of the clamp focused on a greater part of the fabric.
Here's a simple rivet-spreading tool you can make yourself.
In nearly forty years of installing bands have I ever seen instructions to install the rivets in line. I would like to know where Warwick read this clearly erroneous instruction.
I install the rivets across the lining, just like Steve Jelf. I like this tool. You squeeze the handles together then you place one jaw against an anvil and smack the other jaw with a hammer. It works great and sinks the rivet tines deep into the lining. https://www.modeltford.com/item/3422RST.aspx
Is there a reason why the rivets should be set with the tangs across the drum?
The converse would be more beneficial if the linings were worn down to the rivets. The grove in the drum would be narrower!
Allan from down under.
hanks guys for all the input! Across the band It will be from this day forward! Tony, I will scan the two sets of instructions and post them for reference. Herm, I love that riveting press.
I install them with the tines across the band:
They were installed this way when I got the car (the bands were last relined prior to 1954 before I got the car), and seeing as the drums are still in perfect condition, and that I get very good life from the linings, it seems wise to stick with the tried and trusted.
(Message edited by 26tourer on November 22, 2015)