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7 1/4" Gauge "Earl"
Earl Class locomotive

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SPECIFICATION

Dimensions

  • Wheel size 200mm (cut from 8" dia blank) EN8 steel
  • 25mm diameter axles
  • Length 2.8m  over buffers (9' 4")
  • Width 600 mm (24")
  • Minimum radius - 20 feet (6m)

Optional Extras

  • Vacuum pump and controls
  • Custom painting scheme
  • Location  of brake/reverser to match your existing locomotive(s).
  • 4th motor
  • Motor upgrade - 3/4 HP
Technical
  • 3 x 1.1 Hp dc motors (s2 duty cycle)* upgrades available
  • Direct drive - instant power and braking
  • Automatic parkgin brake
  • 24v iDrive digital controller - 180 amp continuous rating
  • Progressive regenerative (dynamic) braking
  • Top speed 11-12mph (optional 7mph on high reduction boxes)
  • Loco body 2mm steel
  • Tender body 3mm steel
  • Commercial bearings
  • Direct drive from axle hung motors
  • 4 x 110 amp hour batteries
  • Traditional whistle sound and control
  • 20amp 7 stage charger - plug in and forget.
The first Earl class loco was designed and built in late 2020 for a customer who wanted the looks and charm of a traditional steam engine for his estate but none of the hassle. Sealed gearboxes ensure a drive system with no maintenace or worries. Three motors spread across three axles give good traction and superior dynamic braking, plenty for most loads.
Due to the amount of work these locomotives are very much built to order and to customers requirements. We welcome anyone onboard and happy to cater for their personal preferences.

What these locomotives can pull is very much down to track, gradients and coaching type. They will easily pull three fully loaded coaches on a reasonably demanding track. Harder the work the more power used and reduce running time. We would recommend charging batteries whenever possible - including between trips. As with all batteries the least used and most charged will prolong battery life.

No.1 - Doug - Private Railway in Essex
No.2 - Rosie -  Poplar Miniature Railway - upgraded to 4 x 1/2HP motors
No. 3 - David - Havering Miniature Railway Club - - upgraded to 4 x 1/2HP motors
No. 4 - Gwen - Mizens Farm Railway - Upgraded motors.
No. 5 - Lotto - Germany - Loco only - no tender
No. 6 - Szejke  - Romania - 2 large loco only motors

Two Earls at Havering Miniature Railway Club

Gwen on test in Romford


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