Aprilia AF1 125 Sintesi
Aprilia AF1 125 Sintesi
. .The chassis is an evolution from the AF1 Project 108: a beautiful diagonal twin spar frameof aluminum is muchstiffer and lighter than the old frame of the AF1 Project 108. The front fork upsidesmaller - 38mm and completely new and is not adjustable. The rear swingarm madeof steel and houses a progressive rear suspension (Sebach, not adjustable). The brakes at the front is now a very beautiful floating 320mm disc(the first case among 125 cc) and with a caliper (Brembo), four pistons; at the rearis a 240mm disc with twin pistoncaliper, similar to the previous AF1. The beautiful new 17 "wheels, Pirelli tireshost the new MT 79 respectively in sizes 100/80-17 front and 130/70-17 rear. The wetyweight down to 131kg, compared with 134kg on AF1 Replica.
Engine The engine is the new Rotax 123, designed from scratch and replaces itspredecessor, the Rotax 127. Here are the key innovations compared to the enginemounted on AF1 Replica: New aluminum cylinder barrel treated with Gilnisil (iron rod on AF1) New head into two pieces to improve the cooling Stroke increased by 0.5 mm (from 54 x 54 to 54 x 54,5 Compression dropped to 15:1 compression (from 15,5:1) Balancer (absent on the Rotax 127) Valves RAVE 2, neumaticCarburetor Dell'Orto PHBH 28 RD oval section Air Box with dynamic air intake mounted on the right side of the bike. With the changes, the engine delivers maximum power to the rear wheelof 28.66ph at 10,500 rpm, slightly down fromthe Rotax 127 of the AF1 Replica (29.24 hp at 10250 rpm), but delivering substantiallymore low and medium revs.