Pundit
Post by Gryffles on Mar 18, 2018 14:57:10 GMT 12
After perusing Lenco Heaven to decide what to do with my Lenco I really wanted a speed controller for performance and a clean look. Nigels Speed Controller looked like something I could manage as the instructions and support are excellent. I've had no major problems so far but of course I dunno if it'll work yet  Nearly all the parts have arrived but I've worked away at what I could. Both pcb's are pretty much done and I've started on the case work.   
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Post by jon on Mar 20, 2018 8:14:18 GMT 12
Good work, I was an early tester for these.
It's a great build and allows for precise control of voltages and therefore speed.
I am now tuning my system, rather than going for precise speed, however it's still a great help.
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Pundit
Post by Gryffles on Mar 20, 2018 20:08:04 GMT 12
Yes, and also means I don't need to cut a slot in slate for manual speed control 
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Pundit
Post by Gryffles on Apr 1, 2018 14:57:59 GMT 12
Taking advantage of the Easter break I've been making progress - both PCB's finished - oscillator board tested - transformers and IEC's mounted to chassis - wiring completed (except connecting it all up) To do this afternoon and tomorrow - drill front plate of chassis for all controls - mount volt meter (might put this on top as front plate is 10mm alu and don't fancy cutting that) - do some final testing Bolts that mount the amplifiers to the heatsink are M2.5 and I wasn't aware these are uncommon so I'll have to order them.    I found cutting holes for the IEC's and fuse a bit tricky and marked the outside of my nice chassis with the dremel. Put it down to a learning experience I suppose  Nothing I can't hide with some black paint.
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Pundit
Post by Gryffles on Apr 2, 2018 15:45:19 GMT 12
Just about finished now. Just the M2.5 bolts to attach the amps to the heat-sink and 2x 2A fuses left to buy.  The output transformer is closest to the top in the below pic and in my haste I cut the hole for the IEC outlet at the bottom of the side panel rather than further up to clear the PCB. Can't really see it but it's a tight fit. All worked out in the end   Would have preferred the volt meter to sit closer to flush but it'll do for now. The angle of the pic makes it look worse as I hadn't noticed before now 
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Post by Owen Y on Apr 2, 2018 19:59:44 GMT 12
Going well, it looks like. Grounding the metal chassis somewhere, before connecting to mains Earth? I see you sorted the toroids fixing.
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Pundit
Post by Gryffles on Apr 2, 2018 20:14:47 GMT 12
Going well, it looks like. Grounding the metal chassis somewhere, before connecting to mains Earth? I see you sorted the toroids fixing. Yep, notice the shiny bare patch ready for the chassis ground. Just need to buy an eyelet tomorrow. Ended up buying different transformers that came with mounting hardware. All going well although quite time consuming yet satisfying. Great instructions for this project Waiting for last parts to arrive then I can move onto the Lenco.
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Member
Post by Ant. on Jun 18, 2018 19:28:29 GMT 12
Any progress on this one?
Valve & Idler nut!
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Nothing I can't hide with some black paint. 
