The Smallframe Clutch is a dilemma in itself. Normally, a 3- Washer Clutch is installed. However, if the Engine is only lightly worked on, this is no longer sufficient to transfer the power adequately. It would be nice to upgrade to four or five plates, but the release travel of the clutch is often not sufficient for this, which means that it no longer separates cleanly. The short release travel often causes problems even with standard linings. Manufacturing tolerances reduce it to such an extent that the Clutch can no longer separate completely. Denis from DRT now offers the DRT Clutch a solution to the problem. Thanks to the additional linings, the clutch (as a 4 or 5 Washer version) has enough friction surface to transmit the torque directly and powerfully. At the same time, it separates perfectly.
The DRT Clutch is based on the tried and tested V50/PV Clutch. Denis has taken care of every clutch component and significantly revised it: It now impresses with a concave domed Outer Friction Plate Clutch (cover plate), a solid Clutch Baseplate, CNC manufacturing. High-quality materials are a must for Denis. The spring guides for the 12 Clutch Springs are now integrated into the Clutch Baseplate. The Cluster Circlip is specially manufactured and hardened. Separating plates and Springs are also specially manufactured and are available in different versions. A 1 mm Spacer for the Clutch Cover creates the necessary additional space.
In the Sport version a very stable Clutch Basket has been fitted with spring guides to ensure a clean spring seat at all times. The clutch is available with 4 2.50 mm or 4 1.90 mm cork linings and is fitted with 3 1.2 mm DRT separating discs. The 2.5mm version requires a Spacer for the clutch cover (not included) The current version is fitted with 6 Reinforced, green springs
The Race version is available with 4 cork or 5-6 sintered Clutch Friction Plates. It is supplied with the DRT race Clutch Basket .
Conclusion: If you are fed up with the eternal clutch slipping, this is a high-quality option with various combination variants for optimization.
High-end Clutch
CNC-milled Clutch Baseplate with 12 integrated spring guides, 12 reinforced green Clutch Springs, CNC-milled cover plate, separating plates, Clutch Basket with precise Clutch Spring mount, hardened Clutch Circlip, 1mm Spacer for Clutch Cover, assembled version supplied with clutch facings
SIP-TiPP: Do not forget the ball bearing Pressure Plate Clutch of the PK XL2 (for clutch 40431811 the original one is used)! For the clutch without linings, we recommend 4x 2.5 V50/PV linings with 3x 1.2 separator plates. For 15-25 HP Engines, different linings/washers should be tried to find the perfect combination. There are also stronger Clutch Springs for powerful Engines.
SIP Community user 'Chiemgauvespa' (via item no.: 40431700): "Top Clutch. Highly recommended."
Note: The latest version on the DRT Race Clutch is equipped with 10 springs.
