Clock Forum

Hi all, I have been trying to get my SP13 running for a few weeks now without any luck. The issue is that the pendulum loses amplitude after 5-10 minutes and then the escapement stops. What is confusing is the escapement has lots of energy as it rapidly rotates between clicks and once the clock stops, if I slightly move the pendulum manually the escapement rapidly rotates so there is plenty of energy but the pendulum wont let it out! Here is what I have already checked and tried... • All gears run smoothly on their arbors. • All arbors have free motion forward and backwards in the frame, they are not pinched, the frame is not sagging. • Pendulum free run test = OK. I am using the kit supplied bearings. The pendulum swings for >15 minutes without the escapement. • Changed bob weight from 100 to 300 g, no change. • Drive weight. I have tried from 1.5 to 4.5 kg in 250g increments and this makes no difference. • Free run test = OK. Without the pallet the clock runs smoothly and continuously with only 1 kg weight. I have run it to the ground three times now and i has not stopped once. As you can see I'm very confused as there appears to be plenty of energy and low friction but the pendulum drops from 5 degrees wing to less than 1 degree in just a few minutes and I cannot understand why. Thanks for your help, Al

Steve would I be able to get a copy of the SP7 original rectangular base like you show in the photos on your website.

I build the 32 day easy build recently. (Using the 12 day drive.) I printed it in PETG using the recommended printer settings. The only issue I had with PETG is that the frame is a little more flexible and you have to be carefull not to warp it when you hang it on the wall (leave the mounting screws a little loose). It's working well. Since I have a MK4 with the MMU I added a few decorative touches. It's been running well for about 2 weeks. A note on bearing selection: Of the ten bearings I bought only 4 would spin freely even after cleaning with carb cleaner and compressed air. The free swing test worked ok while using 2 of these 4 bearings but failed with the rest. The others were ok for use in other parts of the clock. Pick good bearing for the pendulum hanger.