Steel pinion conversion in to lantern pinion

Steel pinion conversion in to lantern pinion

This topic has 4 replies, 3 voices, and was last updated 23 May 2026 at 19:01 by Peter Cook 6.

Viewing 5 posts - 1 through 5 (of 5 total)

Author

Posts
23 May 2026 at 14:56 #849314
David Thompson 1
Participant
@davidthompson1
Does anyone know how to convert a solid steel pinion in to a lantern pinion. I am perfectly capable of making a lantern one but don’t have the equipment to make a steel one. Measurements etc.

Thanks, David.
Advert

23 May 2026 at 15:20 #849317
Peter Cook 6
Participant
@petercook6
From Malcolm wilds book on Wheel & Pinion cutting in horology.

The pins are located on the Pitch circle of the pinion. The pin diameter is 1.05Mod where the number of pins is 10 or less, and 1.25Mod where the number of teeth is greater than 10.

Lantern pinions must always be the driven member, and are normally only used with cycloid gears.

Hope tis helps.
23 May 2026 at 18:01 #849355
David Thompson 1
Participant
@davidthompson1
Thanks, Peter. That’s a big help.
23 May 2026 at 18:51 #849369
JasonB
Moderator
@jasonb
Peter is that 1.05MOD or 1.05 x the MOD of the pinion gear.

I would have thought that as a gears tooth profile gets larger or smaller then the diameter of the pin that fits between two teeth needs to change proportionally.

So a 0.5mod 10T pinion would need 0.525mm pins (1.05 x 0.5) but a 1.0mod 10T pinion would need 1.05mm pins.
23 May 2026 at 19:01 #849372
Peter Cook 6
Participant
@petercook6
Yes Jason it’s 1.05 x the MOD of the gears. 1.05MOD is how Wild writes it. Exactly as you compute provided the pinion has 10 or fewer teeth/pins. Above 10 it’s 1.25 x MOD.
Author

Posts

Viewing 5 posts - 1 through 5 (of 5 total)

Please log in to reply to this topic. Registering is free and easy using the links on the menu at the top of this page.

Code of Conduct

Latest Replies

Viewing 25 topics - 1 through 25 (of 25 total)

- Topic
- Voices
- Posts
- Last Post
- Linear encoders
  Started by: Speedy Builder5 in: Electronics in the Workshop
- 10
- 16
- 17 June 2026 at 09:18
  Michael Gilligan
- AJ Reeves 5 inch driving trolley bogies
  Started by: Ian R in: Locomotives
- 3
- 7
- 17 June 2026 at 08:25
  Ian R
- Orbital – Not your Usual Oscillator!
  Started by: JasonB in: Stationary engines
- 11
- 18
- 17 June 2026 at 07:27
  JasonB
- Axle pin question – choice of material and possible need for case hardening?
  Started by: barryblundell in: Materials
- 5
- 10
- 17 June 2026 at 01:19
  howardb
- Green Dragon Sustainable Fuel
  Started by: Neil Wyatt in: Locomotives
- 9
- 12
- 16 June 2026 at 23:17
  howardb
- ML7 – Zeroing the Topslide? 1 2
  Started by: Dr_GMJN in: Workshop Techniques
- 21
- 35
- 16 June 2026 at 22:18
  ega
- How Good Are 3D Printers? 1 2
  Started by: Neil Wyatt in: 3D Printers and 3D Printing
- 14
- 26
- 16 June 2026 at 20:56
  Mark Rand
- upgrade of Alibre Atom 3D
  Started by: David George 1 in: CAD – Technical drawing & design
- 4
- 5
- 16 June 2026 at 19:31
  David Jupp
- Greetings
  Started by: dee in: Introduce Yourself – New members start here!
- 1
- 1
- 16 June 2026 at 16:53
  dee
- Warco DNC18 Mill/Digital Dream controllers
  Started by: Pippin in: CNC machines, Home builds, Conversions, ELS, automation, software, etc tools
- 9
- 18
- 16 June 2026 at 15:44
  Derek cottiss
- My adventures with a bench top CNC mill 1 2 3
  Started by: John Hinkley in: CNC machines, Home builds, Conversions, ELS, automation, software, etc tools
- 8
- 68
- 16 June 2026 at 12:10
  John Hinkley
- Steam Engine
  Started by: steven49 in: Introduce Yourself – New members start here!
- 1
- 1
- 16 June 2026 at 09:35
  steven49
- Lathe cutting aggressive taper
  Started by: Lee Kennedy in: Manual machine tools
- 11
- 13
- 16 June 2026 at 08:09
  Nicholas Farr
- KMO RETROL 1/4 Scale Lister D Engine with some Mods.
  Started by: Blue Heeler in: I/C Engines
- 2
- 4
- 16 June 2026 at 04:46
  Blue Heeler
- Wallace valvegear simulator
  Started by: Kevan Shaw in: General Questions
- 7
- 24
- 15 June 2026 at 19:29
  John Purdy
- Replacement Allbrit Draftmaster Protractor Rulers
  Started by: wigan2026 in: Workshop Tools and Tooling
- 7
- 14
- 15 June 2026 at 18:06
  Grindstone Cowboy
- Commercial ads in classified
  Started by: Andrew Tinsley in: General Questions
- 2
- 2
- 15 June 2026 at 15:48
  JasonB
- Super Simplex Build
  Started by: Peter Hoerlein in: Work In Progress and completed items
- 7
- 18
- 15 June 2026 at 07:08
  Peter Hoerlein
- Running 380V 3-phase motor on 230V 1-phase
  Started by: jimalm in: Electronics in the Workshop
- 13
- 25
- 14 June 2026 at 21:24
  Julie Ann
- Taper Identification
  Started by: Andrew Tinsley in: Workshop Tools and Tooling
- 2
- 2
- 14 June 2026 at 20:46
  Chris Crew
- Lightning 1 2 3
  Started by: duncan webster 1 in: Electronics in the Workshop
- 14
- 51
- 14 June 2026 at 11:07
  Robert Atkinson 2
- Testing Single Point Thread Fitment
  Started by: berwick in: Beginners questions
- 12
- 16
- 14 June 2026 at 10:18
  alecs
- Taylor Hobson Pantograph Engraver Model D 1 2
  Started by: jaCK Hobson in: Workshop Tools and Tooling
- 8
- 30
- 13 June 2026 at 17:56
  jaCK Hobson
- What Did You Do Today 2026 1 2 … 4 5
  Started by: JasonB in: The Tea Room
- 34
- 115
- 13 June 2026 at 15:38
  Dalboy
- Hindu ascetic in picture gallery
  Started by: Bill Phinn in: Website Questions, Comments, and Suggestions
- 3
- 3
- 13 June 2026 at 15:37
  Neil Wyatt

Viewing 25 topics - 1 through 25 (of 25 total)

View full reply list.

Latest Issue

May 2026

Buy Latest/Back Issues

Newsletter Sign-up

Latest Replies