1926 RHD Touring Car - I installed new transmission bands awhile back and have now tried to adjust them as required. I have adjusted the low band adjustment nut in as far as it will go, but still can't get it to grab. Same with the reverse band. The brake band is working slightly as the engine drags when the pedal is depressed. I have attempted these adjustments with rear end blocked up. Any suggestions? Thank you, Jeff
Are you sure your band ears are on right?
I am fairly certain they only go on one way? The way the keyhole is oriented, I can't see how they would go on the other way?
What kind of bands did you use, sounds like they are to thin.
Could use some pictures.
Herm could be right. It could also be worn out cams on the pedal shafts or bent pedals. However, being all 3 have the same problem, sounds like the lining is too thin. Have the drums been turned down by any chance? That could also cause the problem. The drums are quite thin as is, so any turning would weaken them.
I installed new Scandanavia bands. I don't know know about cams or bent shafts. I wiil have to research those. I don't know if drums have been turned? They appear to be in good shape?
You better pull the hog head off and snap some photos. It could be your bands are just stretched and need to be replaced. Or the bands are off another car or aftermarket extra large ones made for a extra thick band liner? I can see that happening...
"I installed new Scandinavia bands."
I knew you were going to say that. They are very thin and wear out very quickly. As they say, "they ain't like they used to be". You may want to try Kevlar, wood or old stock Scandinavia. (mentioned in no particular order)
Still wouldn't be bad however to see how much side travel you get when depressing the pedals fully, to determine the health of your pedal cams.
Thanks for the input. Are the Scandanavia bands that much thinner than wood or Kevlar? Thinner enough to contribute to my problem? I am still trying to understand the cams, travel etc. Been researching my Black book, the forum etc. Jeff
Did the old bands work OK? Were they also adjusted in the way the new ones were?
Were you having trouble with band slippage?
Like John, I am unclear on the circumstances. Did you install them and they worked fine for a while and now you have a problem? Or did you install them a while back and just never tried to run the car until now.
If they worked OK at first, but wore quickly, it could be driving habits. You should never slip the bands. If you slowly engage the bands like a modern clutch, they won't last long at all.
I have never driven the car till now. I replaced the bands awhile back as the previous owner said they needed to be replaced. I don't have a baseline. I only know that things don't work now.
Jeff has a neat 26-7 right wheel drive Touring car. It had hard band linings in it when he bought it. Somewhere along the line it has had a narrow drum transmission installed but still has a 26-7 hogs head on it. In about 3 weeks I will be out of full time park operation and will have time to help again. Call me.
I have buckets of bands and other band items. If I can help let me know. This sounds interesting.
Something weird is going on. Pictures might help. If the lining is brand new, they should grip. I have to wonder if the ears are located properly on the shafts. Can you post some pictures with the inspection cover off?
Thanks Paul, Dave and others! Paul I will call you. I will send a pic when I figure out how to get it under 200k!
Here is a pic
Nothing looks amiss there, but the gap. I would expect to see more gap on new bands. That is weird. Its like the drums are too small or the bands too long, as someone mentioned.
Its hard to judge the lining thickness from the picture, but don't they look a little on the thin side ?
Jeff, the ends of the linings are awfully thin and the low gear adjustment nut is run all the way down. I think it's time for some new linings.
If you look carefully at the picture you will see that the brake band is hanging off of the brake drum and is not centered.
26 - 27 hogshead on an early transmission?????
There are two problems here. Paul hit on one. The 26-7 hogshead spaces the brake pedal further to the rear to centre it on the wider brake band. With the narrow drum on an earlier trans, the band is shifted back and does not run on the full width of the drum. The brake will be even more marginal in effectiveness as a result. Either the hogs head has to be replaced with a correct one or a 26-7 brake drum needs to be fitted to the trans.
Fitting a 26-7 brake drum has the advantage of the narrow band running on the full width without any of the band engaging on the outside of the clutch hub. The joint between the clutch hub and the drum is eliminated.
Secondly, the ears shown in the photos are too close together and are almost out of adjustment already. If there is not a problem with the thickness of the bands, then the drums must be well worn. This wear can be compensated for. I have my local sheet metal shop cut me a selection of strips of varying thickness material to the width and length of the bands. They roll these for me so that they follow the band circle.These strips are placed between the Ford band and the new lining and clamped around the drum. If the gap between the ears is still to close, a thicker metal strip is selected to correct it.
Once the metal strips are selected, I clamp them around a buggered drum with the band and drill the holes to suit. That way the holes will be in the correct place and riveting the linings can be done as usual. There is no need for work on the trans itself.
Hope this helps.
Allan from down under.
Jeff has new band linings installed. I agree that the ears seem to be too close together. There may be several problems working against him. When he bought the car the previous owner told him that the bands needed replacement. I suspect that the car would not pull when he bought it. There were hard linings in the car and when we pulled them out I thought that they seemed to be thick enough to work. I have never used hard linings and as such have no experience with them. Something does not add up. The drums could be too thin, pedal cams worn, or even the clutch could be slipping. Unfortunately I live 70 miles away, have a job that keeps me close to home and have had no luck finding anyone that lives close to Jeff that can provide more timely help. Does anyone on the forum know of an active T guy in the Colorado Springs area? I have to say that he fed me good last year when I tried to help! He is going to be a good T guy and went to Chickasha this year. He also has a nice Model A but we won't hold that against him!
I think the engine needs to be pulled and a '26 - 27 brake drum installed to start with. Perhaps Dave Huson could be coaxed into working on the car for Jeff. Dave is in Berthoud, CO.