Beschreibung
This machine was delivered to Adrian Kessel in December 1959 direct from the AMC factory (Matchless club certificate available). Adrian was West Country Champion during the 60's and 70's competing in scrambles, trials, hill climbs and was famous for his grass track prowess in which discipline he competed into his eighties.
Adrian was well known for his engineering skills and carried out many modifications to this scrambles machine to make it competitive against the two strokes of the period.
1) The front forks were modified to AMC works specification
(reconfigured damping holes).
2) Lightened G80CS hub fitted to a 21" Dunlop rim.
3) The tank is a modified G80CS alloy competition unit.
4) Beneath the seat and behind the number plates is a
battery box/ air filter unit constructed in alloy.
5) The swinging arm is strengthened and modified to take a 4" tyre and retains the original Dunlop 19" rim.
6) The engine/ gear box plates, crankcase, gearbox, rear sprocket and carrier have been copiously drilled for lightness.
7) The engine was delivered from the factory with a 11. 1 compression ratio and Adrian further developed the engine.
8) The alternator was dispensed with and replaced with a total loss 12v. battery and coil system, this produces a better and more consistent spark and enabled the primary chaincase to be modified for lightness and a reduction in overall size.
9) The cylinder head was ported, fitted with oversize valves and central spark plug.
10) A reverse cone type exhaust system was constructed,
presumably to accepted calculations and dimensions of the day.
11) Continuing the machine's development in the 60's the carburettor was changed to an Amal Concentric type.
During the winter 2010/ 11 the cylinder head and barrel were removed, the big end was found to be in good order as was the barrel (no lip). The valves were also checked and found to be in good order.
The barrel was lightly honed and the piston fitted with new rings. Additionally a new primary chain was fitted along with a new gear box sprocket, points and condenser.
This machine has not been cosmetically restored and retains the patina from when it was raced in the 60's by Adrian and I am only the second owner since it's disposal.
The machine is currently compliant with AMCA/ Pre-65 competition rules with a kill button and folding footrests.
It is unique in it's development and is the only one of it's type known to be currently used in Classic Motocross and probably deserves to be in a collection for posterity.
