# Pro Boat Blackjack 42 brushless 8S catamaran (PRB08043)

> What are the dimensions of the Pro Boat Blackjack 42 8S?

- Category: RC boats › Catamarans
- Kind: Modern device
- Basis: Secondary source: RC Car Action (Horizon Hobby announcement), RC Visions (dealer), Horizon Hobby (copy of the maker's figures; the maker publishes none directly)
- Page: https://xemstudio.com/objects/pro-boat-blackjack-42-8s-prb08043/ · JSON: https://xemstudio.com/api/geometry?object=pro-boat-blackjack-42-8s-prb08043 · Plain text: https://xemstudio.com/objects/pro-boat-blackjack-42-8s-prb08043/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 |
|---|---|---|
| 1086 | 387 | 184.15 |

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

## Notes

- The Blackjack 42 is Pro Boat's polycarbonate 42-inch 8S catamaran. The file is a 1086 × 387 × 184 mm envelope of the hull.
- Pro Boat (Horizon Hobby) numbers are quoted from Horizon's launch announcement as republished by RC Car Action / a dealer, because Horizon's own spec tab could not be read; treat as secondary.
- The motor designation differs between Horizon's spec table (4985) and description (4685).
- 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 |
|---|---|
| Length | 42.75 in (1086 mm) |
| Beam | 15.25 in (387 mm) |
| Hull height | 7.25 in (184.15 mm) |
| Weight | 8.95 lb (4.1 kg) |
| Propeller | 2-blade, 1.7 × 1.6 in, 5 mm shaft |
| Drive | flex shaft |
| Motor | listed as 4985 1350 Kv brushless water-cooled (description says Spektrum Marine 4685) |
| ESC | Spektrum Smart 160A HV water-cooled |
| Battery | two 4S 5000 mAh 50C+ with IC5/EC5 (8S total) |
| Top speed | 55 mph |

## Where the files are

- RC Car Action (Horizon Hobby announcement): [Pro Boat Blackjack 42 Brushless 8S Catamaran RTR](https://www.rccaraction.com/?p=341929) — web — Publisher's page; dimensions are facts
- RC Visions (dealer): [Pro Boat Blackjack 42 8S](https://rcvisions.com/products/pro-boat-blackjack-42-8s-brushless-rtr-electric-catamaran-w-2-4ghz-radio-system) — web — Publisher's page; dimensions are facts
- Horizon Hobby: [Blackjack 42 8S PRB08043](https://horizonhobby.com/product/blackjack-42-8s-brushless-catamaran-rtr/PRB08043.html) — 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-blackjack-42-8s-prb08043/index.json

- pro-boat-blackjack-42-8s-prb08043-envelope: [STEP](https://xemstudio.com/files/hardware/pro-boat-blackjack-42-8s-prb08043/pro-boat-blackjack-42-8s-prb08043-envelope.step) · [STL](https://xemstudio.com/files/hardware/pro-boat-blackjack-42-8s-prb08043/pro-boat-blackjack-42-8s-prb08043-envelope.stl) — Envelope 1086 × 387 × 184.15 mm (Product length × beam × hull height as listed by Horizon Hobby)

## Questions

**What prop does the Blackjack 42 use?**

A 2-blade 1.7 × 1.6 in prop on a 5 mm shaft.

**What batteries does the Blackjack 42 need?**

Two 4S 5000 mAh 50C+ packs with IC5 or EC5 connectors.

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