On this web site you will find information about Ultrascale products. Ultrascale is the name under which a range of 4mm scale items for modelling British outline steam and diesel locomotives is produced. This range includes the most common locomotive and rolling stock wheels and conversion packs for proprietary, ready to run locomotives. Most of these items can be supplied for either 'OO' Fine scale, E.M. or 18.83 gauges. Also available is a range of worm and wheel gear sets and spur gears suitable for 2mm, 4mm and 7mm scales.
For a comprehensive and up to date list of products and prices, please visit our 'Products' section.
750mm (2' 5 1/2") disc wheel , 18.83 profile.
Cosmetic inserts could also be produced the same way the disc brake pads have been produced to suit the wheels for the HST wheels shown below.
1020mm (3' 4") disc wheel , 18.83 profile.
Spur Gear Calculator has been developed by SpiralArm Consulting Limited and Gear Services (Letchworth) Limited as a collection of gear data calculators in the form of either an iPad or iPhone app that can be used calculate the Outside Diameter, Centre Distance and Ratio of spur gears and pinions. Please note that this calculator should ONLY be used for spur gears and pinions, NOT for helical gears.
This app was initially developed for use with the spur gears and pinions available via the Ultrascale web site. However, it can be used for spur gears and pinions from other sources.
Released: 18th June 2016
Gear Lab is a collection of gear data calculators in the form of either an iPad or iPhone app that can be used with Worm gears, Helical gears and Spur gears.
Gear Lab has been developed by SpiralArm Consulting Limited and Gear Services (Letchworth) Limited to help in the manufacture of the Worm and Wheel gear sets, Spur gears, Pinions and Helical gears available via the Ultrascale web site. However, it can be used for the same type of gears from other sources.
Released: 23rd February 2016
Heljan Class 128.
Our latest commissioned conversion was a Heljan Class 128 in 18.83. Not much to say about this conversion except that the cross bar between the bogie sideframes was cut in half and new brass frame spacers made to allow the side frames to be push out for the new 18.83 gauge wheels.
We have just finished our latest conversion which is for the Greek Adtranz model by Alpha Trains, AT13001, AT13002, AT13003, AT18010, AT18011 as Greek OSE A471, A475, A478, 220022 & 220036.
All the above types of models were for two rail DC or DCC operations.
Having now looked at our new bank changes for the processing of cheques/postal orders. We have taken the decision that we will now have to introduce a £5.00 surcharge charge for all orders that are paid for either by cheque or postal order. We are sorry to have to take this action but it has been force on us by the increase in bank charges for these items.
This new charge will only apply to cheque/postal order payments and will be introduced from Monday 14th October 2013. Any orders that are received from this date on, that do not meet this rquirement will be returned.
Last updated: 14/09/2013
If you are interested in 3D printing, then why not follow our progress on Facebook as we build and test the 3D printer from Ultimaker.
We have now produced a simple 3D printed gear box case for our new 2:1 crossed helical set set shown below. The basic dimesions of the case are Height 19mm, Width 14mm, Depth 9.5mm. The gear box has ball races on both the input and output sides of the box.