ULTRALIGHT EN8 STEEL FLYWHEEL 3.8Kg INERTIA STARTE...
C-AEG619

£138.42 exc vat

£166.10 inc vat

In stockIn stock
Ultra light (3.87kg - 8.53lbs) EN8 steel billet race flywheel for diaphragm clutch {NOT-Verto} with ring gear for non-pre-engaged starter

.Forged is more rigid at high speed.

The latest refinement of the Ultra-light Mini flywheel is now made symmetrically to reduce harmonics vibrations caused by earlier versions (those with just 3 large lightening slots)- yet it still weighs under 4kg.! This is considerably lighter than a safely lightened standard iron flywheel, and also provides a much hardier clutch surface..


Not recommended for road use. (See C-AEG421 FOR FAST ROAD)

EN24 has better wear and shock resistance than EN8 which can fret on the crankshaft of highly tuned race engines. EN24 is more stable as it is a high strength alloy steel(nickel chromium molybdenum).

Effects of lightening rotating engine components:

(0.5 x n2 x r2 + R2) / R2

n = total gear ratio (gear ratio x diff ratio)

r = radius of gyration

R = Radius of wheel/tyre

This formula gives what accelerative weight the engine sees of the car per lb.

Radius of gyration of a transverse engine's flywheel is approx. 3.75"

So to determine "weight loss" for a flywheel weight of say 18 lb to 10 lb,

the engine would see an overall weight loss of the car to accelerate in first gear of:

3.33 = 1st gear of 4 synchro 'S' box

3.44 = diff ratio

(0.5 x (3.33 x 3.34)2 x 3.752 + 9.52) / 9.52

= (0.5 x 131.2 x 14.06 + 90.25) / 90.25

= 1012.59 / 90.25 = 11.22 lbs

So for every 1 lb removed from the flywheel, the engine sees 11.22 lbs less

to accelerate off of the total car.

Therefore by lightening the flywheel by 8 lb,

the engine sees a total reduction of the cars accelerative weight of 89.68 lb.

£138.42 exc vat

£166.10 inc vat

In stockIn stock

Recommended usage 1 x C-AEG619 to fit one mini.

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These are the straps held on by 2A3659 bolts on the diaphragn type flywheel.

There are 2 per bolt making 6 in total as standard but on performance flywheel and clutches we recommend 3 straps per bolt to minimise stretching.

Shouldered 5/16"unf bolts for the Mini clutch backplate to the diaphragm, not for heavy duty use or racing. Only tighten up to 16lbs per sq foot torque when using shake proof washer (GHF323) or 18lbs if using flat washer and locktite. Only use [link]...

There are 3 of these shorter 5/16"unf bolts holding the spring straps 2A3658 to the flywheel on diaphragm type flywheels only. Not for Verto flywheel.

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Alternative products

Ultra light billet EN8 steel race flywheelfor diaphragm clutch [NOT Verto] with ring gear for pre-engaged starter.

The latest refinement of the Ultra-light Mini flywheel is that it is now made symmetrically to reduce harmonics vibrations cau...

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The thin ring gear is for old type inertia type starters and used on our steel flywheel C-AEG619 and C-AEG421. Originally fitted to automatic cars and old cast flywheels when lightened by various tuning shops in the 79s and ...

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