Today, we attended the Toyland Parade in San Diego. There were thousands of people watching, and we carried 3 beauty queens in our T. One of the T's was driven from home, about 6 miles away and ran fine to the start of the parade. We waited about 1 hour at the staging area and when it was time to start the parade, his engine started up but he had a terrible noise like clanking and banging in neutral. The girls got out and rode in other T's and we drove the entire route, about 3 miles. When we got back to the starting point, our member was called on his cell phone and asked if he needed to be trailered home. He said he was already home. He joined us for lunch driving a modern car.
Now here is the background I know about the car. it is a black car, I think a 23 touring which was owned by a deceased member. The car had been parked about 7 years until our member bought it. Recently he had the transmission out and the triple gears and shafts were replaced. He also says it has a jackrabbit clutch.
As he drove it home, he said it ran fine in high, and low. It even reversed OK. But in neutral it makes that awful noise.
We though about the triple gears. They are locked by the clutch when driving in high gear. But the engine can be started and runs in low, high, and reverse. The clutch is disengaged in low and reverse and also in neutral. It will engage and run in high. The gears turn and work in low and reverse. But the terrible noise is most noticeable in neutral.
I inquired about the magneto, but he says it doesn't have a magneto. Also the clutch would tend to pull the crankshaft back away from the magneto, so in thinking about it, I have no clue as to the cause of the problem.
I told him I would help him find out what is wrong and help him fix it, but would like some clues as to what to look for, and whether we will need to pull the engine and transmission to fix it.
I would still look at the triple gears. I had a triple gear pin pull out of the fly wheel on my touring once. Sounded like rocks in the transmission. Just pull the inspection plate off the hogs head and crank the engine till a triple gear is up then pull on the triple gear and try to move it. Then crank till the next one is up and repeat. Just takes a few minutes and will eliminate or confirm that the triple gears are the problem.
I would check the push ring pins too while you check the triple gears. Make sure all three push ring pins are in contact with the fingers and the guides don't look wallowed out.
Unless there's massive wear in the mains allowing the crank to move back and causing the paddles to hit the pan (if he has paddles), neutral noises would most likely come from the brake drum toward the rear to the fourth main. In neutral, these parts basically float. Could be worn brake drum bushing(s) too.
It is my car that we are talking about here and I haven't had time to look at it other than pull the cover. I found a lot of metal "dust" on the magnet in the filter tray. I made cursory check of the triple gears and they seem fine but will check more thoroughly when I will have more time tomorrow. I think the sound more as a loud, high pitched squeal when I was trying to get neutral. The sound seemed to go away when I was in low or high. I'll report back when I get a little more info tomorrow. Btw it's a'25 with a '26 engine and transmission. Thanks for getting the discussion started, Norm!
Bet it's a triple gear spinning on the bushing seized to the pin.
Check some of the posts on the forum for this subject.
Good luck and let us know what you find.
I agree, it's probably a triple gear problem.
I broke two triple gear pins after the bushing seized on the pin, first one, repaired it, then another one went. I'll never go back to that rebuilder again, but he's not doing T engines any more any way. (Guess why! )
It was a false alarm.
I was in another T at the parade and I only heard the roaring noise when he was stopped and I asked him if he was OK. I took one of the dignitaries which were in his car and went on in the parade. Today I went down and we checked out the car. Didn't find anything wrong.
He is quite new at driving a Model T and was racing the engine at a very fast RPM as he slipped the low band. I think that was what was causing the squeal which he heard. The loud roar I heard was his engine racing, which I interpreted as something slipping or rumbling from a distance. Anyway, I showed him how to start out in low with the engine just above idle. The drums look OK now burnt which is fortunate because he has Kevlar bands.
Thank you for your replies. We did check the triple gears and the crankshaft endplay. All the adjustments seem to be OK.
Thanks for all the input and especially your help, Norm,. I think this newbie, me, dodged a bullet!
Thanks for the update.