Safety 1st MO140 Specifications download pdf (Page 34)

Q. Roll Over protection

A roll over protection cage is mandatory in all classes except the two wheel drive and trucks.

For details see Chapter 14: Roll Over Protection.

R. Supercharger/turbocharger

1. All turbochargers must be completely shrouded (360 degrees), except for inlet- and

exhaust pipes with steel 2 mm or thicker. The shielding must ensure that no wheels or

other parts of the turbo can come out in case of a turbo explosion.

- The shielding must be mounted as close as possible to the turbo, at mm. four (4)

points.

- Hood construction or grille can not be part of the shielding.

- By super stock and pro stock tractors, open bottom (max. 90 degrees) of the shielding

is allowed under the following conditions:

- Must have a complete closed hood construction.

- Turbo shielding must extend at least 50 mm below the bottom of the turbo.

- Exhaust-pipe thickness must be min. 1.5 mm from turbo to vertical part of exhaust

pipe and securely mounted to the turbocharger outlet flange

2. On radial engines all turbochargers/turbocompounders must be shrouded with 6 mm

thick steel covering the turbo wheel. Exhaust pipes must be connected to engine block to

prevent rotating There must be a support to connect turbo compounder shrouding to

engine or frame, made of flat steel minimum 40 mm wide and minimum 4 mm thick to

prevent shrouding from moving.

3. All intercoolers located outside of normal engine shielding must be shielded with steel

2 mm thick or greater.

4. All supercharger/blower drive components must be shrouded on the top and sides with

2 mm steel or aluminum the shield to be wider than the drive belt or chain and securely

mounted. Blower shield to be wider than all components, idler belt, pulleys, etc. Billet

blower pulleys are mandatory, no cast pulleys allowed.

5. All carbureted or injected aviation, industrial or marine engines using a centrifugal

supercharger must be shielded. Shielding will be the same on each side of supercharger.

Shield to start centerline of supercharger housing and extend 100 mm rearwards, only

allowing notching to fit around inlet motor with a maximum of 210 mm long. Shield to

extend 100 mm forward of centerline of blower housing and notching only for accessory

components (such as air boxes). On front edge of shielding there will be a rolled lip

extending inward 25,4 mm. Shield will be 10 mm thick, made of steel or light metal with

the following specifications: Din AL Mg Si nr 6082 360 degrees around supercharger

housing with a maximum of 50 mm between shield and supercharger housing.

The shielding can only be made out of two pieces when the connection is made behind

the chassis of the tractor and fit together with four bolts M10 grade 8.8 on both sides.

Shield must maintain its integrity (see illustration 2-17).

No fuel lines between protection and supercharger.

2009 2-26

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Safety 1st MO140 Specifications Page 34