NORTON PLUNGER MODEL 7 FRAME

Norton Dominator Model 7 plunger frame complete with plungers. Frame is straight and in reasonable condition but not perfect. It is around 65 – 70 years old after all. I can arrange transport at buyer’s cost

$800

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Ariel KH500 PLUNGER ROLLING CHASSIS

1951 Ariel KH 500 rolling chassis in good general condition. The frame number (SB 724) indicates 1951. It is clean, straight, has all its lugs and appears unmolested from new – the plunger nuts look as though they’ve never had a spanner on them!

The petrol tank is Ariel and has been professionally restored and painted. It is sound. The oil tank also appears sound although there are indications of rust on the outside. It is oil tight. The front and rear wheels are complete and include spindles, brake shoes, springs, cams etc. Both 19″ rims are straight. Top yoke is 1951-53 type with speedometer recess. Handlebar U clamps and hard-to-find saddles (chromed) are included. Steering head bearing races and balls (new) are in excellent condition. Headlamp ears and spring shrouds are in excellent. The forks have all the main components but will need reconditioning.

$AUD1950

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1937 RUDGE ULSTER ENGINE WITH BRONZE HEAD

Rudge engine right 850PXRudge eng fr left 850pxRudge flywheels 850px

Engine No U2075 Superb condition 1937 Rudge Ulster engine complete with chaincases and cush drive. Everything important has been reconditioned. I haven’t assembled it so parts can be examined – just ask for photos. Rudge engines are very easy to build other than the head which is already rebuilt with new valves, guides etc. Flywheels have zero runout and have a new pin with Matchless rod bushed to fit Honda XLR piston. Bore opened to 88m so capacity now 535cc. Crankcases in brilliant condition as are all castings. Cams are mint. Head and barrel are perfect with no broken fins. Two manifolds provided for either clip or flange fitting carburettors.

$AUD7,500

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VINCENT GREY FLASH MANX NORTON ALBION HEAVYWEIGHT 5 SPEED GEAR CLUSTER

 

Albion 5 speed close ratio racing cluster from early to mid 50s as fitted to racing Vincent Grey Flash and Manx Nortons. At the time these were the only 5 speed gear clusters available. The cluster fits straight into Albion gearbox cases. It originally came out of the REG 250cc DOHC twin racer that John Surtees won so many races on as well as setting several lap records in the mid 50s.

Although in reasonable condition for 60 year old racing parts, there is some water damage to the layshaft and layshaft 2nd & 3rd gears – see photos. I think metal spraying can recover the mainshaft and the 2 pinions are quite useable in my opinion. Included are the unique 5 speed gear operator, inner ratchet and 5 speed stirrup selector (all unobtainium) plus other gearchange parts

Pinion teeth numbers are as follows (paired numbers always add up to 48):

Main 5th – 28, 4th & 3rd (paired) – 26 & 24, 2nd – 22, 1st – 21
Lay 5th – 20, 4th – 22, 3rd – 24, 2nd – 26, 1st – 27

$AUD900

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JAP JOR 500cc Hi-cam TT Rep Race Engine 1936

Engine No. JOR/V 47488/S

In 1934, JAP developed the hi-cam race engine in a last ditch effort to remain competitive at the Isle of Man TT. JAP retained OK Supreme to provide the rolling chassis for their 350 and 500 machines. Three in each capacity were built. HRD (Vincent) was also provided with 3 engines for the 500 race. Unfortunately, all failed to finish.

The following year, HRD was provided with another 3 engines modified with twin carb, twin spark heads. 1935 was also the first year of HRD’s own engine which performed slightly better than the JAP engines.

From 1936 to 1938, Zenith offered a C5 Super with JAP Hi-cam TT Rep engine which was based on these ’34 engines. Few must have been sold and none survives intact. No other English manufacturer offered a model with these hi-cam JAP engines. Individuals could order these engines direct from the factory.

The only other engine I know of this type is fitted to an OEC racer that was in Australia. It hasn’t been seen in recent years.

There is some information about these rare engines in Jeff Clew’s excellent JAP: End of an Era, pages 158 – 168

This engine has a 1936 date stamp. It has an iron head and therefore could only for a 1936 Zenith C5 Super. In first appeared in the 1936 Zenith catalogue, listed as the C5 Super: the top-of-the-range 500. Below is an excerpt from the catalogue which states: “Engine: 80mm x 99mm, 498cc J.A.P TT REPLICA, steel flywheels, massive bearings, cylinder well spigotted into crankcase, ball journal camwheel bearings, Dural connecting rod, fully enclosed valves, automatic lubrication to pushrods, rocker gear and valves. Adjustable oil by-pass to cylinder”.

The engine appears in good general condition. The fasteners are all in very good order indicating it has not been butchered. I have lifted the cylinder head and as you can see, it has new valves and a new high compression piston (81mm bore) fitted. The inner timing cover has been cut and professionally repaired. With the magneto and outer cover fitted, the repair cannot be seen. The condition of the timing gears, cams and cam followers indicates very little use. It has also been rebuilt since it last ran. Although externally similar, these engines differ greatly from JAP’s hi-cam road engine which have a single pushrod tube, cast flywheels, timing side bush and much lower spec internals.

I know of 3 racing JAP engines sold in recent years. In May, a 250 with unknown internals sold for over $8,000. Two years previously an incomplete circa 1933 500 engine sold for over $11,000 and last year a 1931 350 in as excellent condition sold for a tad over $11,500.

$AUD14,000

$AUD14,000

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1944 Triumph 3HW ohv 350

Nearly 28,000 3HWs were manufactured from 1942 exclusively for the War Office at Triumph’s Meriden factory. They were deployed in North Africa, Greece, Italy, India (in large numbers) and Burma. None were ever sent to Australia. Like many survivors, it … Continue reading

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1953 BSA GOLD STAR 350, SEPARATE ROCKERBOX BB ENGINE

Goldy right Goldy left Goldy tank top Goldy right close
Engine No: BB.GS.1042
Frame No: BB.32S.3712

Superbly restored late plunger 350 Goldy. Put together by qualified Jaguar engineer with no short cuts taken. New valves, springs, guides, piston (std), bigend, main bearings. Reconditioned magdyno, carb, chronometric speedo and regulator. Gearbox has new bearings, seals and sprockets. Frame has new plunger bushes and steering head bearings. Rechromed tank. Wheels have new rims, spokes, bearings and tyres. Zero miles since rev build.

$15,000

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OK Supreme Silver Cloud Restoration

right.2OK Supreme Silver Cloud Story

To read the story, please click on the heading

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1933 OEC-Python Lightweight TT Replica Build

OEC-Python right frontThe OEC-Python story

To read the full story, click on the heading

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1949 Norton Manx D10M Build

Norton D10M story

Norton Manx 49 right

1949 Norton Manx D10M story published in Old Bike Australia. To access PDF of story, please click on Heading

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