Dynamo Repairs and Services
For all orders and enquiries please use the contact details on the homepage. I do my best to keep my prices up to date but occasionally there will be increases due to suppliers' price changes. The price you see is the price you pay - no need to add VAT.

You may want to undertake your own dynamo repair so, before sending it to me, here's a stage by stage dynamo testing support document. Click here to download. Dynamo test.  It takes a while to download - be patient!
The prices below apply to most post-war, Lucas two brush types, e.g. E3L and E3H . When sending your dynamo please make sure I know which way it rotates; the arrow on the casing is not always correct as dynamos have often been moved from one bike to another and the internal wiring altered. I also need to know whether your bike is wired +ve or -ve earth and whether you are running a 6v or 12v system.  Prices are as follows:-

Price guide valid until 31st October 2020

Remember! No need to add VAT, what you see is what you pay!

 Dynamo refurbishment price guide.
 Standard charge to to strip and rebuild all dynamos £65.00
  Typical basic refurbishment of popular dynamos, includes new 6v UK armature, new bearings, new brushes + standard charge. £120.00
 Extensive refurbishment includes new 6v UK armature, new 6v UK field coil, new bearings, new brushes + standard charge. £160.00

Individual jobs, i.e. not part of a general refurbishment. There may be a discount where jobs are combined.
Standard charge                                                                                                                   £65.00 + whichever of the following apply.....
Fit new armature, 6v, UK made                                                                                              £90.00
Fit new armature, 12v, UK made                                                                                          £100.00  
Fit new field coil, 6 or 12v, UK made. (add £20 to have your body zinc plated)                £45.00
* Note on exchange field coils, new BZP screws included, add £4.00 for stainless
Zinc plate body (n.b. quality varies depending on state of sub surface)                           £20.00
Fit new carbon brushes                                                                                                          £12.00
Fit new drive bearing                                                                                                               £10.00 *
Fit new output side bearing                                                                                                    £10.00 *
* Replace both bearings                                                                                                          £15.00
Repair brush carrier plate (your brush carriers transferred onto new backing plate)      £20.00
Fit cork insulation band (fits inside tin 'wrap-around' cover)                                              £  2.00

Any other parts required will be supplied and fitted at the normal retail price. Please see my Dynamo & Regulator Spares page
Refurbished dynamos should not be used for 12v unless converted to 12v, see below.
12 volt conversion
Your E3L / LM / LO dynamo fitted with 12v armature and field coil.     £150.00 + standard charge

12volt regulator                                                                                          £  24.95
If brushes and/or bearings and/or zinc plating are required at the same time these will be
fitted at the normal service prices.
Battery, horn and bulbs can be supplied at competitive prices.


Dynamos will be wired according to original Lucas specifications. If you use a regulator which requires
non-standard dynamo wiring you will need to refer to your regulator fitting instructions.

Please check my Terms and Conditions page for postage prices and guarantees