Video camera microphones are poor at picking up some sounds, but maybe you can hear the knock. My 1915 runabout ran normally when I shut it off. But the next time I started it there was a definite knock because of some maintenance I did. The fix was simple.
https://youtu.be/N1NVfoHHW1E
What's that knocking sound?
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Steve Jelf
Topic author - Posts: 7237
- Joined: Fri Jan 04, 2019 9:37 pm
- First Name: Steve
- Last Name: Jelf
- * REQUIRED* Type and Year of Model Ts owned: 1923 touring and a few projects
- Location: Parkerfield, Kansas
- Board Member Since: 2007
- Contact:
What's that knocking sound?
The inevitable often happens.
1915 Runabout
1923 Touring
1915 Runabout
1923 Touring
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kmatt2
- Posts: 655
- Joined: Wed Jun 17, 2020 1:41 pm
- First Name: Kevin
- Last Name: Matthiesen
- * REQUIRED* Type and Year of Model Ts owned: 26 T Coupe, 16 T Open Express, 21 TT Flatbed. 15 T Roadster, 13 & 25 T Speedster’s,51 Mercury 4 door sport sedan, 67 Mercury Cougar
- Location: Madera CA 93636
Re: What's that knocking sound?
Jeff, You have a Scat crankshaft don’t you ? Those pesky counter weights. Mark that shortened bolt with a stamp or punch mark for next time the dip tray comes off. By the way I enjoyed seeing the pictures of your trip this September.
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John kuehn
- Posts: 4433
- Joined: Sun Jan 06, 2019 8:00 pm
- First Name: John
- Last Name: Kuehn
- * REQUIRED* Type and Year of Model Ts owned: 19 Roadster, 21 Touring, 24 Coupe
- Location: Texas
Re: What's that knocking sound?
That’s a quick fix. I couldn’t hear the knocking sound but I’ll take your word for it. It probably would have worn the end of the bolt off but you cured it!
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Steve Jelf
Topic author - Posts: 7237
- Joined: Fri Jan 04, 2019 9:37 pm
- First Name: Steve
- Last Name: Jelf
- * REQUIRED* Type and Year of Model Ts owned: 1923 touring and a few projects
- Location: Parkerfield, Kansas
- Board Member Since: 2007
- Contact:
Re: What's that knocking sound?
You have a Scat crankshaft don’t you?
Yep. The horseshoe got ground, but the cap screw didn't. There was no contact until I tightened all the cap screws.
The inevitable often happens.
1915 Runabout
1923 Touring
1915 Runabout
1923 Touring
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vech
- Posts: 94
- Joined: Sun Jan 06, 2019 2:11 pm
- First Name: Craig
- Last Name: Vechorik
- * REQUIRED* Type and Year of Model Ts owned: 1915 Touring, 1922 coupe
- Location: Stugis, Mississippi
Re: What's that knocking sound?
Steve
When I put my '15 engine together, the center of the rear horseshoe plate interfered with the SCAT crank, and the foreword edge had to be ground off, as you know. What I did not like, was how thin the front edge of the threaded hole had become, to get the clearance for the counterweight. it concerned me, I worried about the bolt not holding as it should. So, I cut off a full threaded bolt, and screwed it into that hole, and welded it into the horseshoe plate, and dressed the weld. Yes, you can remove or install the horseshoe plate with the pan on the engine with a the single stud installed in the plate. I used a flat washer and split lock washer under the nut on the stud after I installed the inspection pan. Now, I have no fear of the bolt loosing, or falling out, due to the reduced amount of thread in the horseshoe plate. And, it does not leak oil from that spot.
In case you are wondering what that big rectangular piece of metal is, next to the dip well, it is a powerful rare earth magnet that I stuck on the outside of the inspection pan to collect any metal filings, and stick them to the inside of the inspection pan at next to each of the dipper wells. This works. I have pulled the pan twice since the engine rebuild, and cleaned the paste of filings out of the inside where they collected.
When I put my '15 engine together, the center of the rear horseshoe plate interfered with the SCAT crank, and the foreword edge had to be ground off, as you know. What I did not like, was how thin the front edge of the threaded hole had become, to get the clearance for the counterweight. it concerned me, I worried about the bolt not holding as it should. So, I cut off a full threaded bolt, and screwed it into that hole, and welded it into the horseshoe plate, and dressed the weld. Yes, you can remove or install the horseshoe plate with the pan on the engine with a the single stud installed in the plate. I used a flat washer and split lock washer under the nut on the stud after I installed the inspection pan. Now, I have no fear of the bolt loosing, or falling out, due to the reduced amount of thread in the horseshoe plate. And, it does not leak oil from that spot.
In case you are wondering what that big rectangular piece of metal is, next to the dip well, it is a powerful rare earth magnet that I stuck on the outside of the inspection pan to collect any metal filings, and stick them to the inside of the inspection pan at next to each of the dipper wells. This works. I have pulled the pan twice since the engine rebuild, and cleaned the paste of filings out of the inside where they collected.
"If a fly can, a flywheel" 
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Steve Jelf
Topic author - Posts: 7237
- Joined: Fri Jan 04, 2019 9:37 pm
- First Name: Steve
- Last Name: Jelf
- * REQUIRED* Type and Year of Model Ts owned: 1923 touring and a few projects
- Location: Parkerfield, Kansas
- Board Member Since: 2007
- Contact:
Re: What's that knocking sound?
I like the magnet idea. There are also magnetic drain plugs to go along with the oil screen magnet.
The inevitable often happens.
1915 Runabout
1923 Touring
1915 Runabout
1923 Touring