Rare Car Archive

Makes › ERA United Kingdom › R11B "Humphrey" · Historically significant · 1934–1939

ERA
R11B "Humphrey"

Individual ERA chassis R11B, named 'Humphrey' during Reggie Tongue's ownership in homage to ERA's Humphrey Cook; later Parnell; one of the twenty cars built by ERA 1934–1952

Still being researched: identification guide. Everything shown is checked against the cited sources. Know more? Send us a source.

IDENTIFICATION CARD · ERA R11B "HUMPHREY" 1934–1939
No licensed photograph yet. Photographs are published only when their licence permits it.
1BuiltIndependently researched
0Chassis documentedin this archive
?SurvivingNot yet verified
Contents
  1. 01Overview
  2. 02Production & history
  3. 03Specifications
  4. 04Colours & options
  5. 05Individual cars
  6. 06Reference

01Overview

At a glance

Built
1 Built
Years
1934–1939
Engine
Inline six, pushrod, twin side camshafts, Zoller supercharger · 1,980 cc / 2.0 LFactory: 1,980 cc
Power
179 kW / 243 PSFactory: 240 hp · converted
Top speed
Not yet verified
Body
Not yet verified
Designer
Not yet verified
In this archive
Not yet verified
Surviving
Not yet verified

Sources and any conflicting figures are in the sections below.

Why it matters

R11B is one of the thirteen customer B-type ERA voiturette racing cars. In the specification given by Ultimatecarpage it carries the larger 2-litre supercharged engine, and it is described by another source as a car that is still raced in historic events.

How rare is it?

Six separate kinds of rarity – never combined into one number.

Model rarityNot yet assessed
Specification rarityNot yet assessed
Colour rarityNot yet assessed
Individual rarityNot yet assessed
Historical rarityOne-off 1 · Built1
Survival rarityNot yet assessed

Each kind of rarity is rated separately and never combined.

02Production & history

Production

Every figure says what it counts.

What is countedFigureBasisStatus
Total model productionindividual chassis R11B (one of the twenty cars built by ERA 1934–1952) 11 Factory production Independently researched

Independent counts (e.g. engine and colour) are never combined into a calculated figure. Surviving examples are never presented as original production.

History

R11B was built in the B-type series, which ran from R1B to R14B with chassis number 13 left unused. The sources cached for this chassis give the type background (the B-type was a revised version of the 1934 A-type, offered to customers from 1935) but not its individual race or ownership record, so this section is limited.

Variants

How each version differs from the standard R11B "Humphrey".

No variants documented yet. Have a source? Contribute it.

03Specifications

Technical specifications

Engine

Engine familyNot yet verified
Engine codeNot yet verified
LayoutInline six, pushrod, twin side camshafts, Zoller supercharger2 Independently researched
Displacement 1,980 cc / 2.0 LFactory: 1,980 cc2 Independently researched
Bore 62.8 mmFactory: 62.8 mm2 Independently researched
Stroke 107 mmFactory: 107 mm2 Independently researched
Compression ratio6.0:12 Independently researched
Valvetrain2 valves per cylinder, double side cams2 Independently researched
Fuel systemNot yet verified
InductionZoller-type supercharger2 Independently researched
Power 179 kW / 243 PSFactory: 240 hp · converted2 Independently researchedSource also states 121 bhp per litre.
Power atNot yet verified
TorqueNot yet verified

Transmission & drivetrain

GearboxNot yet verified
GearsNot yet verified
Driven wheelsRear2 Independently researched

Chassis, body & dimensions

ChassisBody on box-section frame2 Independently researched
Front suspensionLive axle, semi-elliptic leaf springs, Hartford friction dampers2 Independently researched
Rear suspensionLive axle, semi-elliptic springs, Hartford friction dampers2 Independently researched
BrakesLockheed drums, all round2 Independently researched
SteeringBurman steering box2 Independently researched
Body constructionNot yet verified
Wheelbase 2,438 mmFactory: 2,438 mm2 Independently researchedUCP lists it under a mislabelled "Length / Width / Height" row; values match the wheelbase and track given elsewhere.
LengthNot yet verified
WidthNot yet verified
HeightNot yet verified
Front track 1,333 mmFactory: 1,333 mm2 Independently researched
Rear track 1,219 mmFactory: 1,219 mm2 Independently researched
Kerb weightNot yet verified
Dry weight 914 kgFactory: 914 kg2 Independently researched

Performance

Maximum speedNot yet verified
0–100 km/hNot yet verified
Fuel tankNot yet verified

“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.

04Colours & options

Factory colours & interiors

Original paint and trim, with the number of cars in each where a source gives it.

Not yet documented. Have a source? Contribute it.

Factory options & codes

Codes are shown exactly as written by the manufacturer.

Not yet documented. Have a source? Contribute it.

05Individual cars

Chassis register

Every documented car, with its colours, history and where it is now. Open a row for the full record. Known chassis are not automatically authenticated originals.

Not yet documented. Have a source? Contribute it.

Competition history

Every race result of the individual cars, in date order. Click a chassis number to open its full record in the register.

Not yet documented. Have a source? Contribute it.

Auction & sale history

Documented public sales of the individual cars. Click a chassis number to open its full record in the register.

Not yet documented. Have a source? Contribute it.

See one in person

Museums where an example of this car can be seen.

No example is documented on public display yet. Have a source? Contribute it.

06Reference

Identification guide

How to tell an original from a replica or later conversion.

Not yet documented. Have a source? Contribute it.

Sources

Each number links to the exact facts it supports.

  1. 1
    ERA Club – car information / chassis histories Level B
    • 1 individual chassis R11B (one of the twenty cars built by ERA 1934–1952)
    Accessed 2026-11-12
  2. 2
    ERA R11B 'Humphrey' - Specifications Level B Ultimatecarpage.com · 2007-10-01
    • 2 valves / cylinder, Double side cams
    • 1,980 cc / 120.8 cu in
    • 62.8 mm (2.5 in) / 107.0 mm
    • 62.8 mm / 107.0 mm (4.2 in)
    • Compression 6.0:1
    • Zoller type Supercharger
    • 240 bhp / 179 kW
    • Rear wheel drive
    • body on box-section frame
    • live axle, semi-elliptic leaf springs, Hartford friction dampers
    • live axle, semi-elliptic springs, Hartford friction dampers
    • Lockheed drums, all-round
    • Burmann steering box
    • 2,438 mm (96 in)
    • 1,333 mm (52.5 in)
    • 1,219 mm (48 in)
    • 914 kilo / 2,015 lbs
    Accessed 2026-11-12

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