Wheels within wheels
John Harrison
- Regions:
- Surrey, Oxfordshire, Buckinghamshire, Berkshire, Hampshire, Hertfordshire
- Notice Period:
- Short (maybe less than one month's notice)
- Type:
- Subject enthusiast, experienced speaker
- Fee:
- Unknown: Depends on the group
- Category:
- Hobbies
- Updated:
- 14th October 2022
- Tagged:
- Dumbbell | Construction
This is the story of how I designed and built a dumbbell to enable me to practise the art of bellringing away from the tower. I describe the unique features of English-style bellringing and then look at 18th century dumbbells, and at modern dumbbells that existed before I started, which inspired me to try to do something better. I show how I developed my initial ideas into a design that would be heavy enough and stable enough to be satisfying to ring, but without producing destructive forces on its 'tower' (my house). I explain the problems I met along the way, how I solved them and how they might have been avoided with alternative designs. I end with some video clips of the dumbbell in action. See: jaharrison.me.uk/Talks/#DumbBell
Views: 544 | Enquiries: 0About John Harrison
My career was half as a Chartered Engineer and half as a chartered Ergonomics & Human Factors Consultant. My talks draw partly on that but more on my many other interests including: photography, fell walking, bell ringing, railways, bricks, human perception, maths ,... I have given around 250 talks to 100+ different groups. I'm based in Wokingham, Berkshire so limited to the surrounding area for in-person events (but online can be anywhere). Details of my talks are on my website at: jaharrison.me.uk/Talks
Other Talks on SpeakerNet by John Harrison
- Living Heritage
- English-style bells and bellringing
- The Settle to Carlisle railway
- Bricks and Brickwork
- Iceland - land of ice and fire
- The Pennine Way
- I'll Take the High Road
- More than meets the eye
- The Human Factor
- Footpaths - an endangered species
- An evolving garden
- The music of bellringing
- The maths of bellringing
- The Technology of Bellringing
- The maths of sea waves
- The evolution of electronic displays
- On Growth and Form
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