lenny
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 posted on 5/6/06 at 06:19 PM |
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blade reg rec
f***d another reg rec even with fan and heat sink. mounting plate 10 air gap but no earth ,bubbling well by the time we stoped the plate woz red hot
after one run 30 mins (not to mad) ,back to the shed super dream one on and back out in 15mins.jpg)
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watsonpj
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| posted on 5/6/06 at 09:31 PM |
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heatsink
sorry about the dodgy picture (best my phone could do in the dark) but heres my heatsink and it doesn't seem to need a fan.
The aluminium gives a good thermal heatsink and I used a thermally conductive paste (used for heatsinks on motor driver circuits.) to ensure good heat
transfer to it. Then six aluminium heatsinks with cooling fins (black bits) finish the job.
I think that its really important to get a good heatsink out of the bottom face of the reg and altough you have it on a metal plate it doen't
look very thick and probably can't et the heat away quickly enough which leads to a hotspot in the centre.
Go on give it a try a small chunk of alloy is easy altough its going to add to the stack height of all those bits and might not fit under your bonnet.
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watsonpj
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| posted on 5/6/06 at 09:44 PM |
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oops what happened to my image its in my archive so have a look
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.jpg)
