Mini GP

[barnesd09]

Does anyone from the bucket racing scene know if the Mini GP bikes would be able to race against the other bucket classes on the big circuits?
The bikes I'm talking about are the PRI MiniGP160R and Dirtmax GP160R

[ringo]

Can't see why not, I have in the past entered a 90cc 2t scooter and was thinking about racing the KTM 85sx in bucket class. The only thing that may hold it back is it doesn't fit into a "period" i.e. too new!!! But as most of the historic clubs around oz are struggling, I'm sure they'd let you in!!

[grnman]

they should be able to as i have seen on the websites that they have CRF150R motors in some. Bollo you should be able to answer this.

[TheClaw70]

I'll answer it for him. To run Superlite You need a homologated chassis and engine to do it. Superlights must have twin shock rears and not be a competion or race bike chassis The minigp bikes are a single rear shock, this will throw them into Motolite. Unless you put 17" wheels on it, it won't get close to the front runners who can go near 200kph. It can be done but it'll be expensive.

Go two stroke. Cheaper. Easier.

[74]

Superlite Rules 2011

Classes: One Class combining:
- 111cc 2 Stroke air cooled
- 159cc 4 stroke air cooled

Maximum capacities:
An engine tolerance of 2% is included within these capacities.

There are two grades:
- Pro Class
- Amateur Class

Frames:
Frames shall be from homologated, non-competition, Road or Trail machines only. Frames shall be twin shock design only (ie: No single shock frames to be used).

Frames currently homologated are as follows:

Bridgestone:
90/100cc

Honda:
CB 100/125/175 K, J, S, N, T;
XL 100/125/175/185, SL 100/125, H 100, MT 125, CT 100/125/185

Kawasaki:
KH 100/125, G4, G7, KE100/125 KV 100, KM 100

Suzuki:
GP 100/125, A 100, TS 100/125, TF 100/125, GS 125, DR 125 DS 80, GT 125, TC 100/125

Yamaha:
DX 100, DT 100/125/175, RX 100/125, LS1, LS3, RD 125, RT 100, AS3, YL1, YB1

Only minor modifications may be made to the frame to allow the fitment of seat, triple clamps (steering stops), shock mount positions, or fuel tanks. The addition of bracing and removal of unnecessary brackets. No restrictions on the use of swing arms. Frame must remain in the original configuration and only twin shock frames to be used. (i.e. no single shock frames permitted).

2a) Frame Modifications
The decision as to whether a modification is to be regarded as minor is to be determined by the BRA committee. Persons are directed to contact the BRA committee to seek a determination as to whether a modification is eligible.

Forks:
Forks must be no larger than 35mm in diameter. Conventional forks only, no upside down forks.


Engines:
Heads, Barrels & Crankcases shall be from homologated non-competition Road or Trail machines only. The following are currently homologated:

Bridgestone:

90/100

Honda:

CB100/125/175 K, J, S, N, T SL100/125, H100, MT125, CT/125/185/200, XL100/125/175/185/200, ATC200 XR200.


Jianshe:
JS125Y (Complete 124cc engine), JS150Y Cylinder only.


Kawasaki:

KH 100/125, G4, G7, KE100/125 KV 100, KM 100

Suzuki:

GP100/125, A100, TS100/125, TF100/125, GS125, DR125, GT125, TC100/125, DFI25, DR200, TLF200 (Head & Cylinder only)

Yamaha:

DX100, DT100/125/175, RX100/125, LS1, LS3, RD125, XT125, RT100, AS3, YL1, YB1 (Only 2 valves per cylinder are permitted on 4 strokes)

Engine Modifications:

4a) 4 stroke Cylinder head modifications:

4ai) 4 stroke cylinder heads shall remain in original configuration i.e. Valves shall retain original angles and position and shall remain standard sizes only. No larger valves to be fitted.


4aii) Porting is permitted

4aiii) Camshaft modifications are permitted. Note: Camshafts that interchange between homologated models may be used. i.e. CB may be used in XL, GS may be used in DR etc.


4b) 2 stroke cylinder modifications:

2 stroke barrels/cylinders shall be restricted to an exhaust port width of 70% of the bore diameter with the standard number of ports.


Brakes:

Brake modifications are permitted. Disc brakes are limited to single or twin piston callipers only.

Tyres:

Tyres to be readily available in Australia; No slicks or wet racing tyres; Tyres are to be as they left the manufacturer, No modifications (ie. No re grooving) Maximum tyre sizes are restricted to a width of 100 section E.g. 100/80 x 17.

Fuel:

Shall be as per the GCRs. No additives or (octane boosters) other than oil for lubrication.

Induction:

Induction will be by carburettors only.
28mm (carburettor maximum on 2 strokes).
(Standard carburettor only on Honda CB125T models),
- No fuel injection.
- No forced air induction.
Fairings: No full fairings (i.e. No fairings below the top of crankcase)
The implementation and enforcement of the BRA Racing Rules is governed by the BRA committee. Penalties for non-compliance will be determined by the committee.

[74]

2011 Motolite Rules

Classes: One class combining:

- 111cc Air-cooled single cylinder 2 stroke
- 159cc Air-cooled 2 valve twin cylinder 4 stroke
- 175cc Air-cooled 3, 4 or 5 valve 1cyl. 4 stroke
- 200cc Air-cooled 2 valve single cylinder 4 stroke
- 85cc Water-cooled 2 stroke
- 159cc Water-cooled 4 valve single cyl. 4 stroke
- 185cc Water-cooled 2 valve single cyl 4 stroke

These capacities are maximum sizes, a tolerance of 2% is included within these capacities. Open to any grade of rider.

Engines Choice of engine is open. Any engine conforming to capacity & valve constraints under Classes section 1.

Forks: Forks may be of any diameter, conventional or upside down

Frames: Frames are open.

Fairings: Modern style race fairings allowed.

Brakes: Brake modifications are permitted.

Tyres: Tyres to be readily available in Australia. No Slicks, Intermediates or Wet weather racing tyres. Tyres are to be as they left the manufacturer. (ie: No re-grooving).

Fuel: Shall be as per the GCRs. only.
The implementation and enforcement of the BRA Racing Rules is governed by the BRA committee. Penalties for non-compliance will be determined by the committee.

[74]

Commuterlite Proposed Rules
Racing class open to all 4 stroke 125cc Commuter bikes.

To be eligible for racing, the motorcycle must have:

ADR Compliance.
It must have a standard 4 stroke engine of no more than 125cc.
The motorcycle must be made to comply with any general requirements of road racing in the MOMS.



The following items may be modified from OEM.

Body work may be removed or replaced, provided the replacement bodywork provides the same profile as OEM see...

External gearing and drive chain.

Carburettor jetting / Fuel injection mapping.

Air filter.

Tyres: No Slicks or Wet Weather Racing Tyres.

Brake pad material.

Exhaust system.

Handlebars, hand and foot controls.

Front Fork springs and internals.

Rear shock(s) and springs.

All other parts must remain as supplied OEM.

Rules to be revised at the 2012 BRA Annual General Meeting.
The BRA Committee has the discretionary power to alter the above rules as required within the next 12 months.

[ringo]

So I could race the KTM 85SX on sava's in motolite???

Except for the fairings part?? Modern fairings, does that include mx plastics?

[barnesd09]

So I guess these bikes fall under the motolights class.

Yeah, I would get my butt handed to me by everyone else, but it would still be alot fun to be able to ride around the big tracks and the kart tracks on the same bike. But I'm sure in the future bike bikes would become more appealing and I'd upgrade to another class.
I just don't want to go jumping on a big bike on a big track without alot of experience... plus I'm not allowed to have too many bikes.