Today we had another customer and friend of the house who wanted to strap the bgm PRO MRB Big Box under his Lambretta.

The 186 Mugello cylinder has been redesigned for a sporty look with control angles of 128 ° to 190 °.

The mixture is prepared by a 34 Koso, which is ignited by a Varitronic.

With a style exhaust, a remarkable almost 29 hp are pressed onto the roller.

In a direct comparison, the resonance systems are clearly ahead in terms of peak performance.

The bgm Pro Clubman can score in the drivability category.

Although the ignition is set rather good-naturedly at 23 ° -15 °, the Clubman can be driven more relaxed in the lower speed range without drops and with around 3PS / 3Nm.

From 5600 rpm, JL and Style63 respond and double the rear wheel performance within 1000 rpm. Those who like it very sporty are certainly well advised to do so.
However, steady movement looks more relaxed and is shown in RED in the diagram.

After our bgm Pro Clubman has already shown what he can do on TS1 cylinders in Part 1 and Part 2, we are going to take our bgm test bike today.

The engine consists of a plugged in bgm Pro RT225 cylinder, bgm Pro crankshaft 60mm stroke and 30 mm carburettor. The cylinder is the current series version with a CNC cylinder head.

The bgm PRO Clubman, Ancillotti von Sito and the JL KRP3 are available as test canids.

As a first comparison here bgm Pro Clubman against Sito

As with the TS1 cylinders, the Clubman's superiority in performance and, above all, torque is noticeable. Up to over 7000 rpm, the Clubman is ahead with 1Ps and 2Nm.

Clubman versus JL KRP3

Over the speed range of 4500rpm -8500rpm (!) The bgm Pro Clubman takes over 1Ps from the JL Road. Even the short torque peak of the JL can no longer really score.

All in all one can say that the bgm Pro Clubman delivers a pretty coherent performance on a plugged-in bgm RT225 cylinder. The concept works particularly well in the area of ​​suitability for everyday use and torque behavior - without complex processing and diaphragm.