The first process is to hold the cast spigot in a lathe chuck, gently turn down the wheel rim, removing the brass tyre, and slip on a form-tool turned tyre, with either Araldite of Loctite.
If you want an insulated wheel, then this will be arranged by a piece of insulating material in between the axle and the boss, rather than at the rim. Probably Tufnol.
The axle will be slightly reduced in diameter to accommodate this. A special back-to-back jig is being prepared to fit wheels, axleboxes & axles to correct quartering and back to back measurement.
Using a drilling jig, the crank bosses are drilled to fit the Gibson crankpins - Brighton locos did not have hexagonal nuts holding their coupling rods on!
These wheels are in now production, and include 4’ 6”, 5’ 0”, 6’ 6” & 6’ 9” - the latter two are drivers for the G class, and the large Single - “Grosvenor”.
The 5’ 6” driving wheels are for D1, D2, D3 and E4, and 4’ 6” drivers for E1, E3.
5’ 0” drivers for C, C1.
It’s all down to demand.
Prices are £12 per axle.
Comes with centre hole reamed 1/8”, fitted with steel tyre, and one axle fitted to the insulated wheel. The other wheel needs to be glued on squarely with either Araldite Slow Adhesive, or Loctite, after threading on the axle bearings. Loctite is quicker and easier.
Some means of quartering must be arranged.
You also need to be able to specify the correct back-to-back measurement for your track gauge.
RAW BRASS CASTINGS BEING TURNED
A set of wheels for a D1 tank
Groups of tyres being formed
Here are original samples of the investment cast spoked carrying wheels for my kits - to replace the now unavailable Sharman Wheels. A pattern for the 4’6” plain wheel was dispatched to a firm in the Birmingham Jewellery quarter, to make initial investigations - the results of which are illustrated here. Prices will be in the order of £5 per wheel. They will be trimmed back to the ‘spoke core’, and then a steel tyre fitted. The form tool produces either a P4 profile tyre, or a Manchester standards EM profile - which can be used quite acceptable in 00 track as well. After drilling and reaming 1/8”, they will either Araldite or Loctite to the axles.
Feel free to get in touch if you wish to know more on the subject.