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Dynamo Swap
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Miken



Joined: 24 Dec 2012
Posts: 577

PostPosted: Sun Nov 10, 2024 7:01 pm    Post subject: Dynamo Swap Reply with quote

My A40 has a Lucas C39 dynamo fitted as standard. I have been given a nice unused, reconditioned C40 Item. Is this a straight swap? Does it require a different voltage regulator?
Thanks
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bjacko



Joined: 28 Oct 2013
Posts: 527
Location: Melbourne Australia

PostPosted: Mon Nov 11, 2024 4:58 am    Post subject: Lucas Dynamos C39 and C40 Reply with quote

Without detailed part numbers such as 22250E/F and model C39PV for example it is impossible to compare. C40's are very rare and do not seem to be fitted to many vehicles. Physically they are 1/2" larger diameter.
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1985 Rover SD1 VDP
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ukdave2002



Joined: 23 Nov 2007
Posts: 4242
Location: South Cheshire

PostPosted: Mon Nov 11, 2024 9:38 am    Post subject: Reply with quote

From a Lucas brochure

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Miken



Joined: 24 Dec 2012
Posts: 577

PostPosted: Mon Nov 11, 2024 10:47 am    Post subject: Reply with quote

ukdave2002 wrote:
From a Lucas brochure



Thanks for that information Dave,
My vehicle has an RB106 control box fitted so it looks like a straight swap for the C40-L
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Southernscouse



Joined: 30 May 2024
Posts: 26
Location: Havant Hampshire

PostPosted: Sat Nov 23, 2024 3:41 pm    Post subject: Dynamo swap Reply with quote

I changed mine to a Dynamotor which is a alternator in a dynamo case I then got a broken rectifier box and used this as a junction box under the bonnet things look original but the alternator puts out 14 volts even at tickover
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