Posts

Lambretta Auspuff Test Big Box Reso Rennauspuff

Lambretta expansion chamber and big box Clubman prototype test

Lambretta exhaust test, while the new and upcoming Lambretta Big Box is currently in production. Unfortunately, a delivery date is still unknown. Auspuff Test auf dem Scooter Center Leisungsprüfstand

Lambretta exhausts onthe dyno

Before we have send the final sample to Spain, we put the new box through its paces. Additionally we have another prototype box from our friend Chalky from Replay Scooters and JPP on the dyno:

  • bgm PRO BigBox Proto
  • JPP Box Proto

The following expansion chambers competed against the boxes:

  • the TSR Evo,
  • the JL3 and
  • in MB3

And all three reso systems did better against the boxes than we would have expected! Die Lambretta Auspuffanlagen

The Lambretta engine

The test engine was constructed as follows:

Results & conclusion of the test

Nice and clear to see how well the box scores right from the start not only with power but also with plenty of torque compared to the ‘racing exhausts’.

 

That’s what makes the bgm PRO boxes so nice to drive. There is always enough power available without having to struggle with gear connection problems or having to twist the throttle like crazy to get things moving. The moderate consumption values of the engine concepts with the bgm boxes are another advantage, apart from the original appearance and pleasant sound level. Another outstanding feature is the registered-design of the mounting system with adjustment options in both horizontal and vertical directions. This allows tolerances and, above all, spacers used for different strokes and connecting rod lengths to be compensated for.

Lambretta exhaust test performance diagrams

Here you can find the performance diagrams as PDF:

Casa Lambretta-Racing-Team uses BGM PRO Tuning parts

Lambretta Racing Animation

Lambretta Racing

Casa Lambretta Racing Team

We supply a selection of our high-quality BGM PRO Lambretta products to the Casa Lambretta Racing Team of Vittorio Tessera.

The racing team is very successful and currently scores wins all across Europe. We are glad to be allowed to contribute with our BGM parts. The following parts are fitted in the racing Lambrettas:

BGM PRO products

  • Rear shock absorber -BGM PRO R12 V2 Black Edition, 300-310mm- Lambretta LI, LIS, SX, TV (series 2-3), DL, GP – black, item number BGM7772
    Most current version of the Lambretta BGM shock absorber. In comparison to earlier versions, this has been further optimised.
    The greatest novelty being the height-adjustment of the shock absorber of up to 10 mm. Thus making it possible to generate more space between frame and intake.
    New features:
    – Bushes supported with silent rubbers
    – Progressively wound spring
    – Rebound and compression damping with marks hard -> soft
    – Length-adjustment of up to 10 mm
    Proven features remained the same:
    – Massive 14 mm piston rod
    – Spring preload adjustment
    – Massive CNC body, anodized
  • Cable set -BGM PRO- Lambretta DL, GP, item number BGM6401N
    Revised version of the proven Lambretta BGM PRO cable set. Well-known features, like correct length of inner and outer shells, outer cable with PFTE sleeve for easy use and detailed plan to lay cables obviously haven’t changed. Improved details are new. Like double pressed cable end sleeves or inner cables, which last longer. Cables for clutch and front brake now come with inner cables with cable barrel. This takes quite a bit of strain off the cables at the lever, making torn clutch cables a thing of the past.The set contains the following cables: Gears (2x), clutch, front brake, rear brake, throttle cable, additional long inner gas cable to use with larger carburetors, choke cable and solder fitting to adjust length to non-original carburetors.
  • Clutch bush -BGM PRO- Lambretta LI, LI S, SX, TV (series 2-3), DL, GP, item number BGM8010B
    The BGM PRO clutch bush is another innovation in clutch technology for Lambretta. High-quality, special material always stands for perfect gliding behaviour. The bush allows smooth disengagement behaviour of the clutch, perfecting your start and resulting in a clean engagement without jolts even for high performance engines. The BGM bush is made of special material (use with a bit lubricant only) and precisely made of one block.
    – Special material for high loads
    – Made in Germany
    – Smooth disengagement behaviour of the clutch
    – Start without jolting
    – Circumferential lubrication groove
    – Fits Lambretta LI, LI S, SX, TV (series 2-3), DL, GP

Video Lambretta Racing

Photos Lambretta Racing