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Lotus Elise / Lotus Exige. Instruction - part 114

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Lotus Service Notes

2-Eleven

2-ELEVEN.A - CHASSIS

The 2-Eleven uses the basic chassis 'tub' of the Elise/Exige with minor revisions including;

Deletion of door hinge upright extrusions on each end of scuttle beam.

Full height side members (no cabin access cut down).

Revised pick up points for the roll over bar.

Addition of a body side attachment panel to the lower edge of each chassis rail sill extension.

The front crash structure is as Elise/Exige with minor fettling revisions, and the galvanised steel rear

subframe differs only in respect of incidental ﬁxings.

Roll-Over Bar

The tubular steel roll-over bar is substantially cross-braced, including provision for shoulder harness

anchorage, and features integral bracing struts to both front and rear. The feet of the main hoop are bolted to

tapping plates riveted into the top surface of the chassis side rails, with the front bracing struts locating against

the joint between the side rail top and scuttle cross-beam and secured by similar riveted tapping plates. The

rear bracing struts use a single ﬁxing bolt at each side to secure to the rear subframe.

The roll-over bar complies with FIA requirements for international motorsport, but note that any additions

or modiﬁcations to the 'bar may invalidate such compliance.

2-ELEVEN.B - BODY

On the 2-Eleven, the rear transom/bumper, body exterior side panels, ‘A’ panels, front splitter and splitter

end support panels and the single panel comprising the whole of the nose section and front wings, are secured

by threaded fasteners to permit easy removal for access to chassis or powertrain components, and allow simple

and economic accident repair. The composite body inner sides, together with the alloy sheet front and rear

cabin bulkheads and rear scuttle panel, are secured with an elastomeric adhesive.

Screw ﬁxed body panels 'A' panel

Rear scuttle panel (also bonded)

Front body section

Body side

Rear transom/bumper

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Lotus Service Notes

2-Eleven

Page 6

All composite panels on the 2-Eleven are designed for light weight consistent with aerodynamic function,

with some panels featuring core mat technology to provide a sandwich construction for enhanced stiffness.

All panels are nevertheless vulnerable to damage caused by inappropriate subjection to bodyweight or other

misapplied forces.

Note: The 2-Eleven is not equipped with conventional shock absorbing bumpers, so extra care should be taken

when parking to guard against body damage. The Lotus 2-Eleven does not offer the same kind and degree of

impact resistance or energy absorption afforded by normal bumper systems. Some panels, including the front

quarter panels and ‘A’ panels, have sacriﬁcial functions to help reduce repair costs and damage to the front

body section in minor accidents.

Care is also required, due to the low ground clearance, to guard against chassis underside damage caused

by ramps, kerbs and road humps. Note that the front splitter panel is constructed from timber composite,

sealed by a layer of resin, and that the occasional grounding of this panel, which is a normal occurrence under

track conditions, will cause erosion of the outer layer, requiring periodic repair (water absorption may promote

eventual de-lamination) or replacement.

Engine Lid

A removable panel in the rear body is secured by two recessed ‘Aerocatches’ and provides access to the

engine for maintenance operations.

To remove the cover, at each latch, press the smaller section of the ﬂush ﬁtting latch plate to allow the

latch plate lever to spring up. Fully raise the lever to release the latch. Lift the rear of the panel, and then draw

rearwards to disengage the front ﬂange from beneath the rear scuttle, before lifting the panel forwards and over

the rear aerofoil. Park the panel where it is unlikely to be damaged or blown away by wind.

To reﬁt, rest the panel on the two rubber buffers at the front of the body aperture and slide forwards to

engage the tang bracket at each side of the panel, beneath the body edge adjacent to the roll bar backstays,

and the panel front ﬂange beneath the rear scuttle edge. Press down the two latch levers to engage the retain-

ing pins, ﬁnally pressing the small buttons to allow the lever ends to be captured. Ensure that each lever is

correctly clipped shut, and ﬂush with the body surface.

Rear Transom/Bumper Panel

The rear transom panel is screw ﬁxed in the following manner:

At each side, an angle bracket bonded to the underside of the transom top surface is secured by two

screws to the aerofoil mounting strut.

A row of screws secures the lower edge of the panel to the mufﬂer alloy heatshield, which is itself screwed

to the rear subframe.

Bonded Body Panels

Body inner side panel

Front bulkhead

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Body inner side panel Rear bulkhead

(also bonded to rear

scuttle panel)

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Lotus Service Notes

2-Eleven

At each side, two screws pass through the transom end ﬂange into captive nuts in the body side panel.

Rear Scuttle Panel

The rear scuttle panel is ﬁxed at each side by two horizontally disposed M6 screws into bond nuts on the

body side panel, and is bonded along the top edge of the rear bulkhead.

Body Side Panel

The body side panels are secured by screw fasteners for ease of access and replacement. Each panel

is retained as follows:

The top edge of the body outer side panel lips over the body inner side panel, to which it is ﬁxed with four

screws engaging with captive nuts in the inner panel.

A single screw passes from beneath, through the end of the rear bulkhead capping rail into a captive nut

in the side panel.

The lower edge of the body side is secured to four threaded inserts in a chassis extension ﬂange.

At the front of the rear wheelarch, two screws secure the side panel bafﬂe/stiffener to a vertical angle

bracket bolted to the main chassis rail.

At the rear end of the panel, two screws pass from beneath, through the rear transom ﬂange into captive

nuts in the body side.

At the front of the body side, two screws pass upwards into captive nuts in the rear end of the front body

panel.

'A' Panels

At the front of each body side, a separate 'A' panel is used to form a duct for air exhausting from the front

wheelarch. Each panel is secured by four screws at the top (2 into the body side, 2 into the front body panel),

and 2 screws into the body side sill at the bottom.

Front Quarter Panels

A front quarter panel is ﬁtted ahead of each front wheel and forms a mounting and duct for the oil cooler,

as well as tying the front corner of the body to the splitter panel. The quarter panel is ﬁxed by:

2 screws from beneath, through the splitter into captive nuts in the quarter panel lower ﬂange.

2 screws down through the front body ﬂange into captive nuts in the quarter panel upper ﬂange.

Front Wheelarch Shields

A small moulded plastic panel is ﬁtted within each front wheelarch, ﬁxed between the body side and radia-

tor mounting panel, and provides protection for the cooling and brake system components.

Front Undertray

An alloy sheet undertray is ﬁtted beneath the nose, and stabilises the front body, splitter panel, and crash

structure to the front of the chassis. The undertray is secured by:

3 screws into the front edge of the chassis (also slots into the extrusion).

3 screws and nuts at each side into the lower ﬂange of the crash structure.

5 ﬁxings around the front edge, passing through the splitter into captive nuts in the front body ﬂange.

2 screws and nuts to a central support bracket from the crash structure.

1 screw each side to the splitter panel.

Front Splitter Panel

A ﬂat timber composite splitter panel is mounted beneath the nose to cleanly split the airﬂow above and

below the underside of the car to optimise aerodynamic downforce whilst minimising drag. A road and race

version of the panel are designed to balance the forces produced by the two types of rear aerofoil. Note that

the front splitter panel is constructed from timber composite, sealed by a layer of resin, and that the occasional

grounding of this panel, which is a normal occurrence under track conditions, will cause erosion of the outer

layer, requiring periodic repair or replacement.

The panel is secured by:

Undertray ﬁxings as listed above.

2 screws at each side to the front quarter panel.

Lotus Service Notes

2-Eleven

Page 8

Front Body Panel

To remove the front body panel for access to the radiator, front suspension, brake control system and other

front chassis components, proceed as follows:

Release each of the two oil coolers from the front body by removing the two securing screws.

Remove the aero screen to prevent damage, or at least release the two rearmost ﬁxings at each side

securing the screen to the body sides.

Remove the single screw each side from within the front corner of the cockpit into a captive nut in the

body.

Remove the two screws each side from within the 'A' panel duct into captive nuts in the body.

Remove the two screws each side ﬁxing to the top of the front quarter panels.

Remove the single screw each side from beneath, ﬁxing the splitter panel to the body inboard of the oil

coolers.

From beneath the nose, remove the 5 screws securing the splitter panel to the body ﬂange.

Carefully lift the front body from the car, disconnecting the wiring harness if applicable.

Note that the front turn lamps (if ﬁtted) are bonded into the front body using Betaseal products.

Rear Aerofoil

Two types of rear aerofoil are available. For road going cars, a ﬁxed angle GFRP composite curved blade

with integral end plates is used, whereas the track optimised aerofoil is made using carbon ﬁbre with alloy end

plates, and has provision for adjusting the angle of incidence. Each type should only be used with the corre-

sponding front splitter panel in order to maintain the correct aerodynamic balance.

Both aerofoil types are mounted via machined alloy support plates to the top surface of the rear subframe.

Each plate uses an angle bracket at its base to secure to the subframe, and two of the same angle bracket to

brace the plate to the rear clamshell through which the plate penetrates. A further angle bracket secures the

blade to the top of the support plate.

The track type aerofoil angle of attack

may be adjusted by loosening the rear pivot

screw on each support plinth, and removing

the front ﬁxing screw. Tilt the blade to the

desired angle, and reﬁt the screw in the most

appropriate ﬁxing hole. Tighten all ﬁxings

securely.

Slots are also provided on the endplates

to allow correct horizontal alignment to be

maintained after adjustment of blade angle.

Exterior

The Launch Edition of the 2-Eleven is ﬁnished in a two tone combination of B111 Lotus Sport Black and

B115 Arctic Silver, with yellow/black/silver styling decals. A '2 Eleven' decal is applied to the rear transom panel,

with optional larger decals on each body side. Stone chip ﬁlm is ﬁtted to vulnerable areas.

Mirrors

A central rear view mirror is mounted

on the top of the cabin front scuttle, with an

additional mirror on both the driver's and pas-

senger's body sides. Each of the convex glass

mirrors may be adjusted after slackening (turn

anticlockwise from above) the knurled clamp

nut below the mirror.

Tighten

to ﬁx

Slacken

to adjust

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Pivot screw

Alternative

ﬁxing hole

positions

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