# Mangle (pin) wheel: Ø96 × 6 disc with 27 Ø4 × 12 pins on R40, gap of 3

> What is a mangle wheel?

- Category: Hardware › Mechanism parts
- Kind: Modern device
- Basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance
- Page: https://xemstudio.com/objects/mangle-pin-wheel-r40-27-pins/ · JSON: https://xemstudio.com/api/geometry?object=mangle-pin-wheel-r40-27-pins · Plain text: https://xemstudio.com/objects/mangle-pin-wheel-r40-27-pins/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files Xem Studio Design License (free to use and sell from, not to redistribute as files: https://xemstudio.com/license/)
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 96.0 | 96.0 | 18.0 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- Disc Ø96 × 6 (Ø8 bore) with Ø4 × 12 pins standing on a 40 mm radius at a 30-position pitch (8.38 mm), three positions left empty: the pinion runs round the outside of the pins one way and the inside the other, passing round the end pins at the gap.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

## Sizes

| dimension | value |
|---|---|
| disc | Ø96 × 6, Ø8 bore |
| pins | 27 × Ø4 × 12 on R40 |
| pitch | 8.38 mm (30 positions) |
| gap | 3 positions, centred on −X |

## Where the files are

- Henry T. Brown (1868, public domain): [Five Hundred and Seven Mechanical Movements — scan on archive.org](https://archive.org/details/fivehundredseven00browiala) — web — Publisher's page; dimensions are facts
- 507movements.com: [Brown's movement No. 36: figure, his text and an animation](https://507movements.com/mm_036.html) — web — Publisher's page; dimensions are facts
- Xem Studio: [drawing](https://xemstudio.com/objects/mangle-wheel-and-pinion-mechanism/) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, Xem Studio Design License, Xem Studio)

Index: https://xemstudio.com/files/hardware/mangle-pin-wheel-r40-27-pins/index.json · license: https://xemstudio.com/files/hardware/mangle-pin-wheel-r40-27-pins/LICENSE.md

- mangle-pin-wheel-r40-27-pins: [STEP](https://xemstudio.com/files/hardware/mangle-pin-wheel-r40-27-pins/mangle-pin-wheel-r40-27-pins.step) · [STL](https://xemstudio.com/files/hardware/mangle-pin-wheel-r40-27-pins/mangle-pin-wheel-r40-27-pins.stl) — wheel, axis Z, pins up, gap on -X

## Questions

**What is a mangle wheel?**

Disc Ø96 × 6 (Ø8 bore) with Ø4 × 12 pins standing on a 40 mm radius at a 30-position pitch (8.38 mm), three positions left empty: the pinion runs round the outside of the pins one way and the inside the other, passing round the end pins at the gap.

## Fits with

- [Mangle wheel and pinion: continuous rotation to reciprocating rotation](https://xemstudio.com/objects/mangle-wheel-and-pinion-mechanism/)