Richardtr3a Posted May 18, 2022 Author Report Share Posted May 18, 2022 Well done Bob. Please carry on and finish the job. If you are not careful I will ask for help on the new Cleveloc nuts on my prop shaft. Thanks Richard & B Quote Link to post Share on other sites
Lebro Posted May 18, 2022 Report Share Posted May 18, 2022 Cells ordered, £25 ! Bob Quote Link to post Share on other sites
Richardtr3a Posted May 18, 2022 Author Report Share Posted May 18, 2022 Sunny afternoon here in Sussex and the propshaft looks more interesting now that the hedge trimmer is sorted out. The dog needs a walk first and it looks like a storm at mid night Thanks , Richard & B Quote Link to post Share on other sites
Lebro Posted May 18, 2022 Report Share Posted May 18, 2022 For the technically minded, The charger is not, as I had assumed, a Delta voltage type, but is in fact a timed charge at "high" current, dropping to a trickle charge after a set period of time. The timer function is done with a digital chip CD4541BM. This is reset on connection of the battery, & runs for a period of time governed by an RC network (clock) & a programmable counter. Having restored it's power supply to be DC only ! It does not ever time out, so a little more work required, but I will get there. Bob Quote Link to post Share on other sites
Richardtr3a Posted May 19, 2022 Author Report Share Posted May 19, 2022 Thanks Bob. Keep me in touch. Richard & B Quote Link to post Share on other sites
Lebro Posted May 19, 2022 Report Share Posted May 19, 2022 Charger now sorted, waiting for cells Bob Quote Link to post Share on other sites
Richardtr3a Posted May 19, 2022 Author Report Share Posted May 19, 2022 Well done Bob. The sun and light rain is making everything in the garden grow very fast. The lawn needs cutting after 5 days now instead of a week. Luckily I have an old Hayter ride on which always starts even after a long winter holiday. The carb needs cleaning but it will have to wait until the TR is back on the road. Thanks Richard & B Quote Link to post Share on other sites
Lebro Posted May 23, 2022 Report Share Posted May 23, 2022 Richard. Ready for collection, or I could try & post them. For information, there was a "blown" transistor (mosfet) in the charger, possibly due to the unsmoothed DC being applied to it from the damaged mains power "brick". The charger works by applying a full charging current (340mA) for approx 3 hours, it then drops to a much lower current, which can be left on for a much longer period (say overnight) The battery has all cells replaced with new. By the way Keith, I tied the website you suggested, but was not able to order anything from it, & failed to contact them in anyway, I think they may no longer be in business. Bob Quote Link to post Share on other sites
Richardtr3a Posted May 23, 2022 Author Report Share Posted May 23, 2022 Thanks very much Bob. Is it safe to use the Post Office or would it be better to collect later in the week. Thanks Richard & B Quote Link to post Share on other sites
Lebro Posted May 23, 2022 Report Share Posted May 23, 2022 Best to collect, as to post I would have to describe the contents as "electronic circuits" or similar Bob Quote Link to post Share on other sites
Richardtr3a Posted May 25, 2022 Author Report Share Posted May 25, 2022 Thanks Quote Link to post Share on other sites
Lebro Posted May 25, 2022 Report Share Posted May 25, 2022 As agreed today, I will post after all. Bob Quote Link to post Share on other sites
Richardtr3a Posted May 26, 2022 Author Report Share Posted May 26, 2022 Thanks Bob Quote Link to post Share on other sites
Lebro Posted June 1, 2022 Report Share Posted June 1, 2022 Well, did the new batteries work ok ? Bob Quote Link to post Share on other sites
Richardtr3a Posted June 2, 2022 Author Report Share Posted June 2, 2022 The battery is working very well and the hedge is looking more controlled. I am preparing the TR for a two day " Fair " which is only 3 miles away and I am on display. It is surprising how it needs some hours work just to stop it getting a bit rough. Thanks for the battery/charger answer. Richard & B Quote Link to post Share on other sites
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