Kyle_b Posted March 21, 2020 Share Posted March 21, 2020 It’s a voltage dropper and connection unit for a 1950s thornycroft. It drops 24v to 12v to run the coil, this part seems to not be working. Are replacements available? Or do I have to go for a modern unit? I’d like to stay as period as possible. Thanks kyle. Quote Link to comment Share on other sites More sharing options...
attleej Posted March 21, 2020 Share Posted March 21, 2020 Dear Kyle, Is the engine Rolls B60 or B80? If it is, it looks like a bog standard unit which should not be hard to acquire or repair. Clive will be able to tell you the correct resistance. There will already be threads on this forum about it. It should be an easy problem to fix! John Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted March 21, 2020 Share Posted March 21, 2020 7 hours ago, Kyle_b said: It’s a voltage dropper and connection unit for a 1950s thornycroft. It drops 24v to 12v to run the coil, this part seems to not be working. Are replacements available? Or do I have to go for a modern unit? I’d like to stay as period as possible. Thanks kyle. That is a Rolls Royce B Range engine. The unit you show was fitted to all kinds of military vehicles, ie Ferret, Saracen, Leyland Martian, Humber FV1600, etc try Richard Banister for parts 01797 253211 Quote Link to comment Share on other sites More sharing options...
fv1609 Posted March 21, 2020 Share Posted March 21, 2020 Ignition junction box, C.A.V. No.1 Mk 2 W5868/21, FV141517, LV6MT4-2920-99-805-6273 Quite common. There is some coverage: Quote Link to comment Share on other sites More sharing options...
hauptmanngurque Posted March 21, 2020 Share Posted March 21, 2020 You currently have one on Ebay, status unknown .... but for only 15GBP .... https://www.ebay.co.uk/itm/FV141517-IGNITION-BALLAST-RESISTOR-BOX-COMMON-TO-FERRET-CVRT-FOX-CHAMP-etc/164121411640?hash=item2636660038:g:rUEAAOSwV7Zeahtk Quote Link to comment Share on other sites More sharing options...
Kyle_b Posted March 22, 2020 Author Share Posted March 22, 2020 On 3/21/2020 at 7:59 AM, attleej said: Dear Kyle, Is the engine Rolls B60 or B80? If it is, it looks like a bog standard unit which should not be hard to acquire or repair. Clive will be able to tell you the correct resistance. There will already be threads on this forum about it. It should be an easy problem to fix! John Thanks for your response! Yeah it’s a rolls b80! Quote Link to comment Share on other sites More sharing options...
Kyle_b Posted March 22, 2020 Author Share Posted March 22, 2020 On 3/21/2020 at 8:02 AM, Richard Farrant said: That is a Rolls Royce B Range engine. The unit you show was fitted to all kinds of military vehicles, ie Ferret, Saracen, Leyland Martian, Humber FV1600, etc try Richard Banister for parts 01797 253211 Brilliant so helpful thanks! Quote Link to comment Share on other sites More sharing options...
Kyle_b Posted March 22, 2020 Author Share Posted March 22, 2020 On 3/21/2020 at 8:05 AM, fv1609 said: Ignition junction box, C.A.V. No.1 Mk 2 W5868/21, FV141517, LV6MT4-2920-99-805-6273 Quite common. There is some coverage: Amazing thank you! Quote Link to comment Share on other sites More sharing options...
Kyle_b Posted March 25, 2020 Author Share Posted March 25, 2020 Managed to sort it guys! Thanks for all the help! Many more questions to follow I’m sure! Quote Link to comment Share on other sites More sharing options...
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