In the Laycock overdrive unit, the annulus was mounted on the output shaft of the unit and drove the propeller shaft and the planet carrier was splined on to the output shaft of the main gearbox. The sun gear was mounted on a sleeve which slid over the gearbox output shaft and splined to the sun gear was a cone clutch.

Overview: The A type overdrive (OD) unit described here was manufactured by Laycock-de-Normanville and was a factory option on the TR2, TR3, TR4, TR5/250 and TR6 Triumphs through 1972. The function of the OD is to change the overall …

Apr 26, 2021 · The document provides information about the Laycock Overdrive Type J, including its working principles, hydraulic system, lubrication system, and fault finding procedures. The overdrive unit uses epicyclic gears and a cone clutch to provide a higher overall gear ratio.

Feb 14, 2021 · Watch as we disassemble the Laycock D-Type overdrive from a Triumph Spitfire. D-Type overdrives were used in a large number of vehicles, and the procedure i...

The Laycock unit always applies the input to one of them (the planet carrier), and either locks the sun-wheel to the annulus or to the casing to give either direct drive or the overdrive ratio.

operation and repair of the Laycock de Normanville Overdrive Unit. Whilst there have been few major changes in the Overdrive Unit itself, since it was first fitted to our vehicles, there have been alterations in the control mechanism. This Manual deals with the Electrical Control mechanism, currently fitted to the Standard

Oct 29, 2020 · My unit is a Laycock-De-Normanville Serial # 22/1374. From other material I am reading the correct pressure is 350-370 psi for early units and 450 psi for the later unit models 22/1753 & 22/1985. With mine being the 22/1374 I am …

Overview: The J type overdrive (OD) unit described here was manufactured by Laycock-de-Normanville and provided as a factory option on the 1973 through1976 (Commission number CF1 and later) TR6s. (I understand identical units were used on …

Overview: The A type overdrive (OD) unit described here was manufactured by Laycock-de-Normanville and was a factory option on the TR2, TR3, TR4, TR5/250 and TR6 Triumphs through 1972. The function of the OD is to change the overall reduction ratio between the engine and rear

Laycock LAYCOCK-DE NORMANVILLE OVERDRIVE SECTION 1 WORKING PRINCIPLES AND NOTES ON M AINTENANCE AND FAULT FIN DINC3 LAV COCK E NOINE I!RINO LIMITE D. Aro h.r R o ad, M lllhou ••• , SHEF FIE L.D, 5 8 O .lV. T.'cphono: IHZ-'un, Te leT.' .. gr" am": INVENTION SMHflHD sun A Member of The G,K.N. Group 01 Complni • •