Swinging Arm Frame

For chains and chainguards, click here, for other parts attached to the frame see the relevant section.

An entirely new frame with swinging arm rear suspension, or pivoted rear fork in Ariel speak, was introduced in 1954 for the overhead valve singles and twins using non- adjustable Armstrong suspension units and ‘Metalastic’ (rubber bonded to metal) bushes. The swinging arm was fabricated from steel pressings welded to a tube; the frame itself was mainly assembled by metal arc welding that saved considerable time over the industry standard method of brazed lugs. In 1955 the VB was available with swinging arm frame, and the outside diameter of the Armstrong units was reduced.

As all movement is by flexing of the rubber in the bushes, the spindle tends to seize in the metal of the bushes and removal usually requires the use of a hacksaw. The bushes themselves cannot be pressed all the way through and the usual method is to burn the rubber out, then to saw through the outer sleeve. One of the more awkward and time consuming jobs; there is no easy way of doing it!

Part No

Description

Per

Years

0744

Shock absorber lower mounting bolt 2 1954-58

0744Q

Shock absorber lower mounting bolt SS 2 1954-58

0745

Shock absorber upper mounting bolt 2 1954-58

0745Q

Shock absorber upper mounting bolt SS 2 1954-58

65-4811

BSA footrest support – what’s this doing in an Ariel catalogue? As the spline on this support is the same as the one welded on the Ariel frame it can be used repair damaged frames. AR 1954-58

2157-30

Rear wheel adjuster lock nut 2 1954-58

4953-54U

Frame, used, state year and enquire about condition 1 1954-58

4952-XXXX

Frame, inc Swingarm, various conditions 1 Various

4953A-96L

Rear frame seat rail for repairing damaged frame, LH 1 1954-58

4953A-96R

Rear frame seat  rail for repairing damaged frame, RH 1 1954-58

4967-54

Shock absorbers, 110 lb. springs, standard solo models 1 1954-58

4970-54

Shock absorbers, sidecar and HS 1 1954-58
Our shock absorbers are a copy of the Girling shocks with 3 pre-load position adjusters, 2 year unlimited mileage guarantee. They are supplied with Girling sized shrouds, see below. The price is for a pair.

4972-54

Swinging arm spindle 1 1954-58

4972-54Q

Swinging arm spindle SS 1 1954-58

4974-56

Shock absorbers, 90lb springs, HT 1 1956-58

4976-55

Shock absorber upper shroud, Armstrong or Girling, SS 2 1955-58

4977-55

Shock absorber lower shroud, Armstrong or Girling, SS 2 1955-58
The shrouds for the 1955-58 shock absorbers are made to the same outside diameter as the original Armstrong’s, which were larger than the contemporary Girlings, so that the replacements will look more correct. We can supply cheaper Girling sized shrouds, the part numbers are: – upper painted 42-4291; lower chrome 42-4292.

4981-55

Bush, top and bottom of suspension units 4 1954-58

4983-54

Shock absorber top collar, Armstrong 2 1954-58

4988-54

Swinging arm spindle nut 2 1954-58

4988-54Q

Swinging arm spindle nut SS 2 1954-58

4989-54

Rear wheel adjuster 2 1954-58

4989-54Q

Rear wheel adjuster with nut SS 2 1954-58

4991-54

Distance tube for bushes 1 1954-58

4998-54

Swinging arm bush, ‘Metalastic’ type 2 1954-58

5730-54

Bracket, brake light switch, hangs from left silencer mounting 1 1954-55

TOOL-13

‘C’ Spanner for adjusting shock absorbers

S2-4

Nut for top shock absorber bolt to frame & mudguard, one either side of mudguard bracket 4 1954-58

S2-4Q

Nut for top shock absorber bolt to frame and mudguard SS 4 1954-58
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