MANX NORTON

1

MANX NORTON 500 CC

Intro

This is my sixth project based on the famous Manx Norton 500 from 1962, last production after 35 years constant development, left the Bracebridge Street factory in Birmingham. This a challenge in itself, my own concept prototype

design using Electronic Ignition Module with Hall Effect, Cam Followers, replacing the Rocker arms. Started

Dec.2010 to June 2012 , 1500 hours.

History

Designed for the Isle of Man TT races in the 20's through to the 60's and countless victories on nearly all known

circuits of the world. The later 1962 model 500cc produced 54hp @ 7200rpm giving a maximum speed of 135mph.

FACTS

Made from solid block aluminium, no castings and Scratch built. 1/4 scale 8cc 4 stroke DOHC driven by shaft, 2 bevel

and 5 spur gears, 7/8 bore 7/8 stroke. 7 inch high, 11 inch long 4 inch wide. Electronic ignition and Novus-1 coil

supplied by Minimag Co.

Wednesday 17th October 2012 ran for the first time to-day for about 5 seconds on a glow-plug, free of the starter

motor Next is to get it running on a spark plug for at least 5 minutes (Full tank of fuel).

Tuesday 1st December 2015 ran for the first time with Spark plug and Methanol for 2 seconds, free of the starter

this is a mile stone. This proves the Minimag Ignition system, just a bit tweaking and hopefully we shall have a Full

tank of fuel run in the New year.

2

Working design drawings.

3

Parts machined ready for mock up. Crank-case is made in 3 parts.

4

Crank-shaft is made in 3 parts.

5

Oil pump is situated to the left in the crank-case on the timing side.

6

Showing the upper bevel gear.

7

Showing the 5 spur gears and the 2 cams in the cam-box.

8

Inside the cylinder head, oil ways, recessed valves and spark-plug.

9

Hall Effect magnet mounted within the rotor arm.

10

This one shows the cam-followers.

11

Now the pluming showing oil feed from oil pump to the crank vie a junction box, then up to the

cam-box on the left. Returning on the right to lower bevel gear and crank-case. The pipe on

the lower left is a breather and a primary chain lubricator.

12

Gear box with scavenge pump, primary chain and carb. fitted.

13

Showing the scavenge pump inlet and outlet on the gear box casing.

14

The scavenge pump which is larger but identical to the primary pump fits within the gear box.

15

Primary Oil Pump fitted in the crank case driven with spur gears.

i

16

This shows the oil pressure valves, a later mod.

17

Oil,Fuel tanks (brass) and Exhaust (copper) fitted prior to chroming.

18

19

Finished, the Novus-1 Coil is situated in the wooden base.

20

21

Transistor Ignition Module (TIM 6) is to the rear of the cylinder, where the Magneto on the full size would be. The small LED at the bottom of TIM 6, is the timing light. The other one is for the ignition.

22

24

26

home

web counter