Watsonian has been building sidecars since 1912, which places it among that select group of British manufacturers whose products have survived wars, recessions, changing fashions and the repeated efforts of the British motorcycle industry to abolish itself.
Its sidecars belong to an age when a motorcycle combination was not merely an eccentric weekend toy. It was family transport, commercial transport and, for many people, the nearest affordable alternative to a car. Over more than a century, Watsonian developed the curved glass-fibre bodies, polished fittings and traditional coachbuilt appearance that made its name almost synonymous with the classic British sidecar.
That history is part of the attraction. A Watsonian does not look like a plastic box attached to a motorcycle as an afterthought. It gives the whole outfit presence. There is something gloriously civilised about a proper chair, with its upholstered seat, small windscreen and polished trim, travelling beside a motorcycle that would otherwise carry little more than its rider and a modest quantity of luggage.
A Watsonian sidecar on the Yamaha Virago 535 is therefore an attractive idea. The Virago is low, compact and has exactly the sort of faintly old-fashioned cruiser appearance that suits a sidecar. Add a traditional Watsonian chair and the result would look as though it had always been intended, rather than assembled during an unusually energetic weekend with an angle grinder.
There is, inevitably, a slight difficulty. Watsonian sidecars cost money.
Facebook Marketplace, however, offers an alternative universe in which sensible engineering decisions compete directly with things that seemed amusing after 2 glasses of wine.
A complete Squire sidecar appeared for about £550 - Squire merged with Watsonian in 1988. That was probably the rational answer. It already had a chassis, suspension, wheel, seat and body. In engineering terms, most of the difficult work had been done by somebody who presumably understood sidecars.
There was also an unfinished Watsonian project at around £600. It was elegant, traditional and potentially very suitable, although the word unfinished in a vehicle advertisement can cover anything from requiring a coat of paint to requiring the recreation of several missing decades of British manufacturing.
A motorcycle sidecar looks rather like a heavily disguised fairground dodgem, and that sparked a thought. Why not start with an actual dodgem and disguise it as a sidecar?
Old dodgem bodies seem to sell for between £100 and £250. Most are glass fibre, approximately sidecar-sized and designed to carry a passenger while surviving repeated impacts from members of the public. This is already a more impressive specification than that of some production vehicles.
One multicoloured example, proudly marked Dodgem III, had particularly promising proportions. Beneath the fairground clutter was a long, low body with enough room for a passenger and a shape that might conceivably complement the Virago.
Not immediately, obviously.
The rubber bumper would have to go. So would the steering wheel, lights, metalwork and towering rear bodywork. The passenger seat would need lowering, the excessive rear overhang removing and the shell reshaping so that it no longer presented the aerodynamic qualities of a garden shed.
A small windscreen could be added. The body could be smoothed, repaired and painted to match the metallic green-grey of the bike. Properly done, it might look less like a retired fairground ride and more like something produced by a small European coachbuilder during an eccentric period.
The body is not, of course, the sidecar.
It would still require a proper chassis, suspension, wheel and correctly engineered mounting system. A £55 vintage sidecar chassis also appeared for sale, although its age and condition raised the possibility that the low price merely reflected the cost of the rust.
The chassis would need to be examined carefully, particularly its suspension, bearings, alignment and ability to accept secure mounting points. The Virago itself would require a properly designed subframe. Attaching a dodgem shell directly to a few convenient-looking parts of the motorcycle would produce something memorable, but probably only once.
A sidecar needs properly triangulated upper and lower mounts. It also needs correct wheel lead, toe-in and lean-out. These are not decorative details. They determine whether the outfit travels along the road or spends its time attempting to visit the opposite verge.
There is also the question of weight. The dodgem body is likely to be relatively light, which is useful, but an excessively light chair can lift readily on left-hand bends. Ballast might be needed when travelling without a passenger, although the final requirement would depend upon the finished weight and geometry.
Braking would also need consideration. A light unbraked sidecar can be perfectly workable, but the completed outfit would have to be assessed as a whole rather than on the comforting basis that each individual part once belonged to a vehicle.
The complete Squire remains the sensible option. Buy it, fit the correct subframe, set it up properly and go for a ride.
The unfinished Watsonian is the elegant option. It would suit the Virago and produce the sort of combination that attracts approving nods from men wearing waxed jackets.
The dodgem is the interesting option.
It is cheaper only if one places no monetary value on fabrication, glass-fibre work, paint, suspension repairs, engineering, repeated dismantling or the gradual transformation of a garage into a small and badly managed vehicle factory.
But it would be unique.
And once you have imagined a Yamaha Virago 535 with a fairground dodgem beside it, the complete Squire begins to look depressingly sensible.
However, this one looks as if it escaped from a maritime exhibition.
Then I spotted this one on Facebook Marketplace for £250.
Make unknown, but it does have a 1960s Watsonian Monza look about it. Unfortunately the owner is not responding to my enquiries on his advert. Could be away on holiday.
I uploaded the image to ChatGPT instructed it to renovate it and paint it in the same colour as my Virago.
Now, that does look rather attractive. Unfortunately ChatGPT is a bit squonk when lining the bike and sidecar up in the same plane, but you get the general idea.
I contacted Watsonian about a subframe for the Virago 535. They replied that they don't have enough data on the 535 to produce one off the shelf, so they'd need the bike to fabricate a bespoke subframe. The price was £595. That's not cheap, but it would be the proper job. It may be something to do over the winter.
I then made the mistake of joining a Virago owners' group on Facebook. You know the sort of place. You ask a perfectly straightforward question and receive every answer except the one you were looking for.
I asked whether anyone had drawings or measurements for a Virago 535 subframe so I could get a tame fabricator to make one. Instead I got the usual pearls of wisdom. Buy a BMW. Buy an 1100 Virago. In other words, don't answer the question at all.
Fitting a sidecar to a Virago 535 isn't impossible. Plenty of people have done it. Yes, it blunts the performance, but I didn't buy a Virago because I have an overwhelming desire to frighten sports bikes. I bought it because it's a pleasant, steady plodder. My comfortable cruising speed with a sidecar would probably be 60 to 65 mph anyway.
The trick is to keep the sidecar as light as possible. A lightweight Squire or Watsonian is a far better match than some enormous touring chair. The engineering challenge isn't whether the Virago can pull it. It's designing a proper subframe that spreads the loads without abusing Yamaha's rather unconventional frame.




















