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Rotax Technical BulletinBULLETIN - 2011 USRMC Tech Supplementary Regulations

TECHNICAL UPDATES - EFFECTIVE JANUARY 1, 2011
The following additions are being made to the 2011 USRMC Tech Supplementary Regulations

TECHNICAL BULLETIN - Nov. 10, 2010
  • Main Bearings,- SKF  main bearings are not allowed.
  • REQUIRED -Micro Max Carburetor – Combination #2 Needle Jet K-98- 8.5 insert- gr3.6 floats, Idle jet marked “60” digits Idle jet insert marked “60”
  • REQUIRED -Mini Max Carburetor – Combination #1 Needle Jet K-98- 12.5 insert – gr5.2 floats, Idle jet marked “30” digits Idle jet insert marked “30” digits
  • Micro Max main jets – Only  main jets marked: 115/118/120/122/125/128/130/ as supplied from Rotax  Brp Micro Max Jet package *main jet marked 132 is not allowed
  • Micro Max & Mini Max -Event organizers may specify single main jet or a choice of allowed main jets for event.

Junior Max- Senior Max – Rotax Masters – DD2 Sr & DD2 Master must use either Combination 1 or 2.

Combination #1 
- Floats marked with gr5.2
- Idle jet is stamped with”30”digits
- Idle jet insert is stamped with”30”digits”
- Carburetor insert 12.5

Combination #2
- Floats marked with gr3.6
- Idle jet is stamped with “60” digits
- Idle jet insert is stamped with “60” digits
- Carburetor insert 8.5

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