# Pro Boat PRB1645 flex shaft, 12 in, 1/4 in flex with 3/16 in prop shaft (Sonicwake 48)

> What are the dimensions of the Pro Boat PRB1645 flex shaft?

- Category: RC boats › Props and drive hardware
- Kind: Modern device
- Basis: Secondary source: OzRC (dealer) (copy of the maker's figures; the maker publishes none directly)
- Page: https://xemstudio.com/objects/pro-boat-prb1645-flex-shaft-sonicwake-48/ · JSON: https://xemstudio.com/api/geometry?object=pro-boat-prb1645-flex-shaft-sonicwake-48 · Plain text: https://xemstudio.com/objects/pro-boat-prb1645-flex-shaft-sonicwake-48/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 6.35 | 6.35 | 304.8 |

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

## Notes

- Replacement flex shaft for the Super Sonicwake 48: a 1/4 in flex cable stepping down to a 3/16 in prop shaft.
- Figures are from OzRC (dealer); the prop stub length and drive-dog end are not published.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.

## Sizes

| dimension | value |
|---|---|
| Flex shaft length | 12 in (304.8 mm) |
| Flex shaft diameter | 1/4 in (6.35 mm) |
| Prop shaft diameter | 3/16 in (4.76 mm) |
| Fits | Pro Boat Super Sonicwake 48 |
| Part number | PRB1645 |

## Where the files are

- OzRC (dealer): [Pro Boat Flex Shaft Sonicwake 48 12in 1/4in Flex 3/16in Prop PRB1645](https://ozrc.com.au/products/pro-boat-flex-shaft-sonicwake-48-12in-1-4in-flex-3-16in-prop-prb1645) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/pro-boat-prb1645-flex-shaft-sonicwake-48/index.json

- pro-boat-prb1645-flex-shaft-sonicwake-48-flex-cable: [STEP](https://xemstudio.com/files/hardware/pro-boat-prb1645-flex-shaft-sonicwake-48/pro-boat-prb1645-flex-shaft-sonicwake-48-flex-cable.step) · [STL](https://xemstudio.com/files/hardware/pro-boat-prb1645-flex-shaft-sonicwake-48/pro-boat-prb1645-flex-shaft-sonicwake-48-flex-cable.stl) — Flex cable Ø6.35 × 304.8 mm (prop-shaft stub length not published, not modelled)

## Questions

**What prop bore fits the PRB1645 shaft?**

Props bored for a 3/16 in (4.76 mm) shaft.

## Fits with

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- [Romarin stern tube 235 mm with M4 shaft × 300 mm (ro1444)](https://xemstudio.com/objects/romarin-stern-tube-235mm-m4-ro1444/)
- [Raboesch M5 stern tube with ball bearing, shaft 290 mm (rb301-08)](https://xemstudio.com/objects/raboesch-shaft-m5-ball-bearing-290mm-rb301-08/)