Tempo by Miles Hatem, Questions and Answers

Miles writes:

"Hello Clayton,

I'm finally getting toward the end of building my Tempo (which I bought plans for over 6 months ago, wow didn't realize how long it's been until I actually counted back). But as I noticed on your recent blog, you were talking about not putting bushings on wheels because you design some holes to be specifically oversized.

Along that note, when I was putting arbors into my frame for the first time I noticed that the center wheel arbor (3/16") was loose in the frame. I figured I had messed up and drilled the wrong hole size, but when I went back to check the pattern it specified a 13/64 hole. It didn't make sense to me that the center wheel arbor would be loose, so I drilled the hole larger, plugged it with a dowel, then re-drilled with a 3/16" hole.

Now I'm starting to question if that was the right thing to do. Is the center wheel arbor supposed to be loose in the frame?

I look forward to sharing pictures of the finished product. It's definitely been the most fun woodworking project I've done.

-Miles Hatem"

Clayton answers:

"Glad you read my new blog. Yup, the drill sizes shown are correct. Go ahead and re-drill to the correct size.
Send pix when you get your Tempo completed. I always enjoy seeing the creativity of other woodworkers.
Bob, one of my builder/proofers, just loves his Tempo. He says it's the best design of mine that he's ever built. I hope you feel the same way.
Aloha. Clayton
PS. I don't think you'll find any mistakes on the plans I sent you. You can build it as shown, and guess what?...it'll run! Yay!"

Miles writes back (and a new Tempo is born!):

"I've finally finished the build!

I decided to make the entire pendulum (actually almost the whole clock for that matter) out of a single 96"x11"x3/4" piece of maple. And since I had one large piece of stock, I took a bit of liberty with the pendulum and made the transitions a bit more flowing. Luckily I had the forethought to add some length to the bottom to account for the extra weight at the top. And, since I had the blended transitions in the pendulum, I went ahead and redesigned the hands to match.

I've had it running for a few minutes at a time, but have some minor stopping issues related to a very slightly bent escape wheel arbor (hoped I could get away with it, but apparently I can't). Also, my counterweight is a bit on the light side (~3lb). I only have it filled with steel BB's, so I'll have to try and find someplace here in California that sells lead. It runs fine if I double the weight even with the bent arbor, so hopefully if I fix both issues it won't give me any trouble at all.

The next design of yours I'm looking forward to building is the Medieval Calendar Clock, though I think I'm going a bit crazy for thinking I can do it. I guess if you throw enough time and frustration at anything you should be able to achieve your goal, right? Anyways, I probably won't get around to starting it for another few months, since I plan on building myself a desk first. So I'll have to get back to you when I'm about ready to start so I can buy the plans.

Thanks for offering these beautiful designs for others to build. I have thoroughly enjoyed building this, and am sure you have heard the same from many, many others.


Thank you, Miles, for sharing pictures of your beautiful work, as well as notes and questions from your journey along the way.

Note:  Miles sent me a video of his wonderful Tempo in action, but I was unable to download it.  So here's Bob Brown's Tempo in motion instead: