@Hump Yard Mike posted:If you change the cam, it can also operate the puffer smoke unit to match the chuffs. Harmon yards put the new cam in for me while getting some other work done. Prior to this, I did not realize the cams were plastic, which will change how I upgrade future engines. I feel like the puffer the smoke unit is still fun to use and just enough smoke for me to enjoy it being on all the time. I can post video if interested.
Funny as I was listening to Pete’s video, i hear the 1 out of 4 chuffs being off sound wise when run slow. My engine makes the same odd 4th chuff like it is cut off early. Initially I thought it was the micro switch but replacing it did not resolve it. It must be something with the sound system.
Mike
The event duration, ie; how long, & how quickly the cherry switch is closed can affect how the chuff sounds. You can get into the dynamics of it, but it’s can be a time goblin, ….I have a few like yours Mike, that spit one odd chuff, ….not out of timing, just an odd sounder, ……but once all of them are up above 5-6 SMPH, they do rhythm out, ……that’s why Pete’s one piece cam has us beat!!…he can guarantee his lift and lobe separation, where the split cam has to be fiddled with….
Pat
