Lotus 2 valve mains set - UK Vintage Radio Repair and Restoration Discussion Forum

Ian B · 26th Sep 2007, 4:53 pm

Could anyone help me please with information on a Lotus AC 2 All Electric Receiver? Circuit diagram would be most useful, also pictures of the "works".
I assume the valves would have been a triode detector + pentode AF, and a metal rectifier used with a voltage doubler circuit.
I bought this pretty thing at a "collector's auction" a few months ago and was fooled by the nicely restored cabinet. I couldn't get the back off in the saleroom, and I was more than a little miffed when I got it home to find that inside was the chassis from a 50's superhet (ECH 42, EF41, EBC41, EL41, & EZ40) horribly bodged in place! All I have of the original is the chassis (with several extra holes) and the on/off switch!
I suppose I could try to fit the modern bits properly into the original chassis, but that goes against the grain.

Thanks

Ian Blackbourn

ppppenguin · 26th Sep 2007, 5:33 pm

I have a spare complete chassis for a Lotus AC 3 valve radio. The cabinet was little more than wormholes and was discarded. If this of interest I could bring it to Harpenden and sort out a price.

JHGibson · 26th Sep 2007, 10:48 pm

I have the owner's manual with the circuit diagram for the Lotus All Electric Bandpass 3. Also some photos I took after the Lotus restoration. Let me know if you need any of this.
John.

ppppenguin · 27th Sep 2007, 7:57 am

Quote:

Originally Posted by JHGibson

I have the owner's manual with the circuit diagram for the Lotus All Electric Bandpass 3. Also some photos I took after the Lotus restoration. Let me know if you need any of this.
John.

John

If you're scanning the manual for the Lotus I would also appreciate a copy. I have a complete set as well as the spare chassis that's going to Ian B.

Thanks

Jeffrey

Ian B · 27th Sep 2007, 6:06 pm

John,

That would be most helpful. I'll send you my email address via pm.

Many thanks,

Ian

PWH · 28th Sep 2007, 8:49 pm

Hi Ian,

If its the 2 valve its a Lotus 'Bud' I posted the diagram here somewhere do a search and you should find it

Be carful when disassembling as you can wreck the tuning cap

Regards
Peter

Ian B · 29th Sep 2007, 9:17 am

Hi Peter,

Found it! Thanks for that.

There's no chance of me damaging the tuning condenser - it's missing!

I feel another trip to Gerry coming on......

See you,

Ian

PWH · 30th Sep 2007, 5:59 pm

I think you would be better off making it into a bandpass 3 from the chassis offered above. the cabinet is identical.

Send me a PM with a real e-mail address and I'll send all the details. At over 2meg its too big to post here.

See you at Gerrys??

26th Sep 2007, 4:53 pm	#1
Ian B Hexode Join Date: May 2006 Location: Arlesey, Bedfordshire, UK. Posts: 401	Lotus 2 valve mains set Could anyone help me please with information on a Lotus AC 2 All Electric Receiver? Circuit diagram would be most useful, also pictures of the "works". I assume the valves would have been a triode detector + pentode AF, and a metal rectifier used with a voltage doubler circuit. I bought this pretty thing at a "collector's auction" a few months ago and was fooled by the nicely restored cabinet. I couldn't get the back off in the saleroom, and I was more than a little miffed when I got it home to find that inside was the chassis from a 50's superhet (ECH 42, EF41, EBC41, EL41, & EZ40) horribly bodged in place! All I have of the original is the chassis (with several extra holes) and the on/off switch! I suppose I could try to fit the modern bits properly into the original chassis, but that goes against the grain. Thanks Ian Blackbourn

26th Sep 2007, 5:33 pm	#2
ppppenguin Retired Dormant Member Join Date: Dec 2003 Location: North London, UK. Posts: 6,168	Re: Lotus 2 valve mains set I have a spare complete chassis for a Lotus AC 3 valve radio. The cabinet was little more than wormholes and was discarded. If this of interest I could bring it to Harpenden and sort out a price.

26th Sep 2007, 10:48 pm	#3
JHGibson Retired Dormant Member Join Date: Apr 2003 Location: Salt Spring Island, BC, Canada Posts: 368	Re: Lotus 2 valve mains set I have the owner's manual with the circuit diagram for the Lotus All Electric Bandpass 3. Also some photos I took after the Lotus restoration. Let me know if you need any of this. John.

27th Sep 2007, 6:06 pm	#5
Ian B Hexode Join Date: May 2006 Location: Arlesey, Bedfordshire, UK. Posts: 401	Re: Lotus 2 valve mains set John, That would be most helpful. I'll send you my email address via pm. Many thanks, Ian

28th Sep 2007, 8:49 pm	#6
PWH Heptode Join Date: Mar 2003 Location: Waiheke Island, New Zealand Posts: 503	Re: Lotus 2 valve mains set Hi Ian, If its the 2 valve its a Lotus 'Bud' I posted the diagram here somewhere do a search and you should find it Be carful when disassembling as you can wreck the tuning cap Regards Peter

29th Sep 2007, 9:17 am	#7
Ian B Hexode Join Date: May 2006 Location: Arlesey, Bedfordshire, UK. Posts: 401	Re: Lotus 2 valve mains set Hi Peter, Found it! Thanks for that. There's no chance of me damaging the tuning condenser - it's missing! I feel another trip to Gerry coming on...... See you, Ian

30th Sep 2007, 5:59 pm	#8
PWH Heptode Join Date: Mar 2003 Location: Waiheke Island, New Zealand Posts: 503	Re: Lotus 2 valve mains set I think you would be better off making it into a bandpass 3 from the chassis offered above. the cabinet is identical. Send me a PM with a real e-mail address and I'll send all the details. At over 2meg its too big to post here. See you at Gerrys??