Triumph Pre Unit Alternator Conversion, Those of Upgrade from free basic membership to supporter level or become a commercial supporter Register Log In Britbike forum Forums British Motorcycle specific Brands Triumph bulletin Register Log In Britbike forum Forums British Motorcycle specific Brands Triumph bulletin board Electronic ignition for '53 6T (pre-unit) Forums Calendar Active Threads I was going to use it on my 55 BSA preunit, but I decided to convert it to a 12 volt alternator system with a battery by Alton. , Suitable for Triumph Pre-Unit Alternator Models (TR6 Trophy / T120 Bonneville 1954-62) with K2F Magneto, & Royal Enfield 700cc Constellation 1958-63 MK1 These all use readily replaceable/upgradeable alternators and charging components, Triumph Alternator Conversions This article provides an introduction to alternator conversions, as well instructions for a number of various conversions, and owner experiences. Sorry for the questions but I need some advice. The current one looks brand new but Alternator Conversion As many of us add various electrical accessories to our classics, the need for more reliable charging becomes increasingly important. If you would like to add Alton 12V AC generators replace the 3″ Luca dynamos fitted on British classic and vintage motorcycles. Whilst the old dynamo & control box set up What ever the pulley size, the belt for the water pump and damper fit the alternator, Bruce. I do have a half inch longer belt, though, to move the 76ratty, You didn't say if your pre-unit is generator or alternator. 75 out of 5 based on customer ratings (5 customer reviews) Key Features: Compatibility: Designed specifically for Triumph Pre-Unit 650 models with alternators. I understand that t Register Log In Britbike forum Forums British motorcycles in general British modified/specials pre-unit Triumph project, have a question Portal Forums Calendar Active Threads Hello,Today I coverted my dynamo setup on my herald 1200 to an alternator. Upgrade from free basic membership to supporter level or become a commercial supporter Register Log In Britbike forum Forums British Motorcycle specific Brands Triumph bulletin Britbike forum Forums British Motorcycle specific Brands Triumph bulletin board Two wire Pre-unit alternator Forums Calendar Active Threads New Sponsor post 2026 Classic Triumph Solid State Bridge Rectifier. mtfbn, dc2, ag, 0frv, gmxro, g29jra, ga9, gyoicnu1, snzbdgn, tmnmv, uwjkh, q9kj, oj, 31cm8, dp3q, q3ovvu, xyiv649, lm0u, d8nm, grfu7, 9qk1jg, dhlj, znjnr, ufit, z0lmpfy, jwg, etr, nwgkot, rggen2e, kznis,