These come in three main types, twin worm drive with a remote O ring drive motor, a planetary geared motor with twin O ring drives to the axles or a single ratio unit with the motor between the axles. My motors bogies use either plastic Chinese gears or my own brass and steel gears and Chinesemotors of which I keep large stocks, so replacements are available if required. The O rings are nitrile, not rubber so they will not perish, do not set in a shape if left standing for a long time and are unaffected by oil if any gets on them. The motors may look small but are generally more powerful than other similar types. I have used many of all the types I sell and have found them very reliable and forgiving of abuse. I have had a couple of faulty ones but I have not managed to destroy one yet, despite hours of trying.
Exact gear ratios are difficult to calculate when an O ring drive is included so the figure given is a best guess, usually its the worm drive ratio x the approximate O ring ratio, eg 16:1 x 2.5:1 = 40:1 or 12:1 x 3.2:1 = 38:1.
The motors are listed further down this page and their codes are used in the kit descriptions.
This is marketed as the Universal Power Bogie and designed as a replacement for the Tenshodo unit. It will fit where a Tenshodo fits but comes with a top plate which can be used as an under floor mounting, cut down to just a top strip, provides a center pivot point or can be left off.
It has 20:1 worm sets on each axle and an O ring drive of around 2.5:1, total 50:1. It can be built to 7 wheelbases from 24.5 to 35mm in steps of 1.75mm and suits any gauge down to 12mm. The motor is a Japanese M10, which clips into slots in the frames.
Universal Power Bogie kit - £42.00
Supplied with 10.5, 12 or 14mm discwheels
These are designed to fit in the space allowed for Tendshodo Spud power units and are supplied RTR in any wheelbase from 24.5 - 35mm. They use an N20 motor and 13:1 gear sets, they are faster than required but run well at low speeds due to the choice of motor and gears. The gauge can be anything 12mm or wider and wheels 8.5, 9.5 or 10.5mm disc, spoked wheels can be supplied to order.
The pictures show 3 x 24.5mm units with 16.5mm gauge on the left, 14mm in the center and 12mm on the right. They can be held in place with Blutak at either end or brackets can be fashioned to fit your model. A center pivot is not included so they would need modifying to use as a bogie. I keep a few 24.5 and 35mm units in 12, 14 and 16,5mm gauges ready to go but all others are made to order.
For DCC users the motor wires can be looped up above the unit then back down to the pick ups, the user would need to cut these to connect the chip, I can supply them like this if specified on ordering.
Available from 1st Aug 2019 - Tenshodo replacement power bogie RTR - £50
For those wanting bigger wheels I can supply 12 or 14mm disc but only if the wheelbase is a minimum of 27mm for 12mm and 29mm for 14mm. This is because the motor section is wider than the ends and larger wheels would clash with the motor. I can also do 10.5 and 9mm gauges but again 27mm minimum wheelbase for the same reason, these take longer to assemble as the gears need modifying so will cost £10 extra.
This chassis is a modified version of the Tenshodo Replacement above with a 22mm wheelbase, it can only be built to 16.5mm gauge as the wheels overlap the motor so narrower is not possible.
It uses a 10/15 N20 motor with 13:1 gearing and 9.5mm wheels, after the bonnet was packed with lead for ballast it ran really well and almost silently.
I can only supply these RTR as they are far too difficult to build as a kit. If I ever find a smaller double ended motor I will be able to do it in other gauges and maybe even shorter wheelbases.
22mm Tenshodo Replacement unit for Recreation 21 Simplex - £50 RTR
It can also be used under other bodies but ask me via email first.
These 3D printed units are made to order. I prefer to have the body to hand when drawing the chassis, you can post it direct or, if buying a Shapeways body, use my address as the shipping address and it will come direct to me.
The pictures left shows a Schoma gas burner and an LKM Ns2 with their bespoke power bogies, below is a Jung EL105, below that is an LKM Ns1 modified to 16.5mm, below that is a Feldbahn Struver, its actually 1/35th scale as the 1/43rd one was far too small to motorise. below that is an O&K MD1 and finally a CKD BN 30R.
As I have made quite a few for Shapeways prints and have the drawings ready, it is a simple job to print one off or adjust the drawing for an odd gauge when required.
So far I have produced chassis for the Shapeways locos listed below, wheel size/motor/gear ratio/gauge are shown for each type.
- LKM Ns1 - 8.5mm/N20/30:1/up to 14mm (from T3 Design)
- LKM Ns2 - 10.5mm/N20/40:1/up to 16.5mm (from T3 Design)
- Jung EL105 - 8.5mm/N20/30:1/up to 14mm (from T3 Design)
- O&K MD1 - 8.5mm/N20/30:1/up to 14mm (from T3 Design)
- Feldbahn Struver - 8.5mm/K20/30:1/up to 16.5mm (from T3 Design, I used the 1/35th version)
- CKD BN 30R - 9.5mm/N20/30:1/up to 16.5mm (from T3 Design)
- Schoma gas burner - 10.5mm/N20/40:1/up to 16.5mm (from T3 Design)
-Simplex - 21.5mm/12-21/45:1/32mm (O std gauge from Recreation 21). This one uses Slaters wagon wheels and will cost £16 extra or you supply the wheels.
- Ruston 16hp with or without cab (from Teebee models) 9.5mm/N20/35:1/up to 16.5mm.
All custom worm drive Power Bogie kits are £40
If designed to order they will be RTR only as I have to test them and are £70 each, if more than one are ordered, the rest can be sent as kits at £40 each. Bear in mind that they are not too easy to assemble, I supply around 90% as RTR.
My test build. Some will have an off white chassis, some grey, I printed half of each.
Designed to drop into the S&D cast body with just minor trimming of 1 of the spacers. It will also work in the Worsley etches but you would need to add mounting points for it.
Complete with all parts as shown and can be assembled in about an hour. It has 16mm spoked wheels, a 12/21 Chinese can motor, 45:1 gearing and is very quiet, slow and powerful.
As a kit for 12 to 16.5mm gauge - £55 In 14 or 16.5 RTR form (can be regauged)- £85
I discovered these geared motors on a Chinese website and tried them out, they can only be used where the motor is in line with the axles as no 90 degree turn is possible. The pictures left shows a Nigel Lawton 20hp Simplex and a Shapeways 3D printed one, below is a close up of the chassis, below that is a Henrik Laurell 32/42hp Simplex, below that is a WD protected Simplex, the armoured is the same and the open similar but with a lower motor. last is the Recreation 21 20hp Simplex which is still giving me problems as its too small and too light.
The larger motor is a variation of the M10 motor with a planetary gearbox of around 120:1 ratio, so I use pulley sizes to speed up the final drive a little. The smaller motor is a 6mm coreless motor with a 142:1 planetary gearbox which needs pulleys around 1.5:1 to speed it up around 50%. Bogies with the larger motor turned out fine but the smaller motor is far too noisy, I am still trying ways to make it usable.
So far I have produced chassis for the Shapeways locos listed below plus the Nigel lawton and Wrightlines Simplexes. Wheel size/gauge are shown for each type, gear ratios are all around 100:1.
- WD Simplex - 10.5mm/up to 21mm ( armoured or protected from Recreation 21)
- WD Simplex - 10.5mm/up to 21mm (open version from Recreation 21)
- WD Simplex - 10.5mm/up to 16.5mm (Wrightlines)
- 20hp bowframe Simplex - 10.5mm/up to 16.5mm (Nigel Lawton)
- 20hp bowframe Simplex - 9.5mm/up to 16.5mm (still under trials, from Recreation 21)
- 32/42hp Simplex - 10.5mm/up to 16.5mm (from Henrik Laurell)
-20hp plateframe Simplex - use etched Universal Power Bogie - 10.5mm/12 to 16.5mm (from Davids railway bits)
All custom planetary geared power bogies are £40 as kits, £70 RTR
If designed to order they will be RTR only as I have to test them and will be £70 each. if more than one are ordered, the rest can be sent as kits at £40 each.
All the options I stock are listed below. Chinese motors differ from the Mashimas we are used to in that they are not designed to be repaired. They will last as long as a Mashima, then you replace them when they die. This makes them effectively maintenance free, other than oil, and a lot cheaper. The main issues are firstly that the mounting holes are in a different place, so I offer 3 types of etched mounting plate to fit all motors on the list, solder these on top of a standard gearbox, drill through the relevant holes and fit as normal. Secondly the shafts are mostly 1mm, so I offer sleeves to convert to 1.5mm to take standard worms.
The Chinese rate their motor voltages differently to Mashima and other makers, they use the voltage of the proposed use as the rated voltage, this means that all motors are under rated and are often available from different sources at different ratings, despite being the same motor. I have attempted to destroy samples by overloading them and leaving them running on 12 volts over night but they all survived none the worse for everything I did to them. I consider all the motors I sell to be safe on 12 volts and will replace any FOC that burn out in less than 2 years.
Most of the motors listed do not use carbon brushes but precious metal wipers which keeps the internals a lot cleaner in use, this is part of what makes them disposable at the end of their life.
M10 - 8 x 11mm flatcan, 1mm shaft both ends, horizontal screw holes, Japanese.
M10 motor - £12 each
Also available, a Chinese version with a shaft at one end only for £8 each
M20 - 8 x 15mm flatcan, 1mm shaft at one end, horizontal screw holes, Chinese.
M20 motor - £8 each
M30 - 8 x 20mm flat can, 1mm shaft at one end, horizontal screw holes, Chinese.
M30 motor - £8 each
N20 - 10 x 15 flat can, 1mm shaft at one end, diagonal screw holes, Chinese.
N20 motor - £8 each
N20 10 x 15 flat can, 1mm shaft at both ends with horizontal screw holes, Chinese. Better finished than the one above and lower revving.
N20 (black) - £10 each
5 pole skew wound open frame motor similar to the old H13, 10 x 14 x 24mm with a double ended 1.5mm shaft but no screw holes. I had great hopes for this but it turns out to be rather revvy so needs a higher gearbox ratio. This one does have carbon brushes. I usually have a couple in stock at £10 each
N30 - 10 x 21mm flat can, 1mm shaft at one end, horizontal screw holes, Chinese. This is a high power motor and draws power similarly to the old X04 motor.
N30 motor - £3 each
N30 (long)- 10 x 25 flat can, 1mm shaft at one end, horizontal screw holes, Chinese.
N30 (long) motor - £8 each
030 - 10/18 flat can motor 13,500rpm, 2mm screw holesand 1.5mm shaft, Chinese.
030 motor - £8 each
050 - 12 x 27mm flat can, 11,000rpm, 1.5mm shaft at one end, diagonal 2mmscrew holes, Chinese.
050 motor - £10 each
030 - 15 x 25mm flat can, 2mm shaft at one end, no screw holes, Chinese. You may recognise this as a Smokey Joe motor, also used in other Hornby locos. I was sent a batch in error and China doesn't want them back.
030 motor - £2 each
A new motor has just become available and is said to be 6 pole! Anyone who knows motors knows that a DC motor must have an even number of magnets and an odd number of poles. This does indeed have 6 poles but they are wired as 2 x 3 poles and have 2 pairs of magnets at 90 degrees to each other. This gives more power in a smaller package and they are really quiet and smooth.
They do get hotter than most other motors at high speed so I left one running flat out all dayand have not managed to melt it yet. They only heat up above about 75% max power but no-one uses that kind of speed in a loco anyway. A Japanese company has been using them for years in OO9 locos but this is the first time I have managed to buy them direct from the factory. They have no code number and measure 10mm square and 15mm long with diagonal holes and a 1mm shaft.
Square 6 pole motor - £10 each
18/27mm round can motor, 10.000rpm, a very usable motor in larger models. Has 1.2mm front fixing screws and a 1.5mm shaft, the splines are for plastic gear fitting and have no adverseeffect when used with a metal gear or pulley.
16/27 round can motor - £10.00
17.5/33 flat can motor, 11,000rpm with a 5 pole skew wound armatureand 2mm shaft, very powerful, smooth and quiet. There are no fixing screws so needs clamping or sticking in place, ideal for drives with a separate gearbox or turntables and moving features.
17.5/33 flat can - £14.00
This geared motor was originally designed for use in a camera for lens focusing, hence the odd shape to the body. It starts life like the one shown on the left and I modify the gearbox to be like the one on the right by adding a small 3D print and tube bushes. Based on an M15 motor with a worm drive 4 stage gearbox of around 80:1 ratio, deceptively powerful for its size and very quiet and smooth. This was to be my default choice for future kits but recently became unavailable. To use with 1/8th wheels, sleeves can be added to the axle ends, I can supply these if required.
When the above motor became unavailable I found this similar one but with the motor flat rather than on edge, it has the same gearing and M15 motor but is wider. A similar 3D printed conversion makes it suitable for 2mm axle drive but it can only do 14mm gauge or wider. Once I have bought a large batch, I only have 3 at the moment for testing, this motor will be my default power unit for kits in 14mm gauge or wider, my remaining stock of the earlier type will be used for 12mm only.
M15 worm drive geared motor 2mm axle - £16 each
Another geared motor has come to light, also a camera type but slightly larger and based on the N20 motor. The gear ratio is around 110:1 with noticeably chunkier gears in its 4 stage gearbox. This also uses a 2mm axle and is the same width (10mm) and can also be converted to 1/8th by adding sleeves. I have around 400 in stock so they won't be running out any time soon.
N20 worm drive geared motor (2mm axle) - £16 each
Becoming rather unsatisfied with the choice of wheels available I decided to have my own made. They are brass cut to RP25 code 110, about the same as current Hornby/Bachmann, then blackened. The plastic bushes are turned, not moulded, so hold their shape when pushed onto an axle, no more wobbly wheels if you do it with them in a vice.
Available in 8.5 & 9.5mm with steel or brass blind axles or blackenedbrass pinpoint - £2.50 per axle
Newly arrived are my wheels specially made by a Chinese company. They are blackened steel toRP25 code 110 but slimmed down to 2.5mm wide. I can supply them with blind axles in brass or steel, or blackened brass pin point as shown in the picture. They go on the axles truly every time due to their turned bushes, no more wobbly wheels.
10.5, 12 or 14mm disc wheels with axles of choice - £2.50 per axle