I’m pleased to say that we now have the recently manufactured high-quality, lightweight forged 7.5:1 pistons available on the Sunbeamland Shop in +0.020″ and +0.040″ oversizes. Modern materials and CNC machining mean that all-up weight is within a few grammes of the original Marston’s item and I’m enjoying the experience of running one in on my own 1930 Model 90. They should fit any of the late 20’s early 30’s 500cc OHV bikes and we hope to be following up with production of a small batch of 6.5:1 pistons aimed more at the Model 9.
This little beauty arrived today and I couldn’t wait to put a post up on the blog here at Sunbeamland. It is the first from the box of a batch of forged Sunbeam Model 90 pistons. It is modelled on an original Sunbeam 7.5 : 1 piston and, unlike some alternatives that are available, weight has been controlled so that the combined weight of piston, pin and rings closely matches the original.
Next job is to bore a spare cylinder to suit either of the +0.020 or +0.040 sizes we have produced and get some testing done before winter sets in.
A new development here at Sunbeamland is that we now have a vintage motorcycles for sale section added to the shop. To get the ball rolling we have this rather interesting 1929 BSA sloper. Being 1929 vintage, it is of course eligible for VMCC events such as the Banbury Run. If you’d like to know more, drop us a line and we’ll put you in touch.
A variety of items are for sale on the new Sunbeamland shop. I will be adding new items over coming months as I get around to photographing them should the shop prove effective. Other bits and pieces will go via the eBay route. The parts are a mixture of vintage Sunbeam spares and assorted vintage motorcycle spares for bikes from other manufacturers.
The first items up for grabs are not actually vintage spares but were, until the arrival of sparkly new ones, my spare pair of Honda RS250 NX5 cylinders.
Back on track with vintage parts we are also, selling on behalf of a good friend, a rather lovely Amal T10TT. Not sure what this would be from, maybe Norton or Velocette? Any information would be appreciated.
We are always interested in acquiring vintage spare parts, particularly for Sunbeam and Rudge motorcycles.