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25a dumpy fuse

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Old Oct 29th, 2015, 11:37   #1
amazon69
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Default 25a dumpy fuse

Hi,

Has anyone found a source of the 25a short fuse that the amazon uses other than Brookhouse? They have them, price is ok (£3..a lot for a fuse but cheap in the scheme of things) only thing is the postage cost. I keep forgetting to add a couple to an order, and I need some for my Merc. Otherwise, if anyone has an old fuse with just the ceramic left maybe they could send it to me? Happy to pay a few bob. I could then make one up out of a new fuse and the old ceramic. Thanks.

Dave
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Old Oct 29th, 2015, 13:33   #2
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Just what is the purpose of having the short dumpy fuse? I fitted a new fuse box on my PV with standard fuses. From the outside you can't tell the difference.
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Old Oct 29th, 2015, 13:57   #3
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In this instance, it's to help my other car, which has a fuse box i cannot replace, but which uses the same short fuse as the Volvo. I also cannot jury rig up a modern fuse to replace it due to the nature of the 'box.
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Old Oct 29th, 2015, 14:33   #4
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Hi ya

Use a standard ceramic fuse lift off fuse wire cut fuse down and refold fuse wire
back in a shorter fashion hope that helps

Kind regards

Robert.w
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Old Oct 29th, 2015, 19:40   #5
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Arcturus;

Typically, when something like intentionally different sizes is designed-in, it is for the purpose of poka-yoke or mistake-proofing, so that in this case, fuses of differing current values could not be inadvertently interchanged...it certainly does that, but in our case, it also brings with it a minor burden of designing in a (sometimes) difficult to locate ABF size (7x17mm) 25A Fuse...one that a vintage Volvo owner should get (when its not needed) and keep on-board as a spare for when it is needed.

There are repair options though. I guess the simplest is to harvest the element out of the more common ABC size (6x25mm) 25A fuse, and install it into the ABF ceramic holder. like so:


See further notes on this: http://www.sw-em.com/Fuses,%20Alloca...es_and_Options

All fuses conical ends as well as their making clips should be cleaned to shiny metal and installed with a dab of ACZP...but every body here already knew that...

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Old Oct 30th, 2015, 14:03   #6
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Just to show the world that not every vintage Volvo enthusiast is frugal beyond belief or reason, I would be happy to send you, for free, including postage, a pair of new dumpy 25A fuses...
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Old Nov 3rd, 2015, 01:04   #7
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On their way, before things get serious around here...
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Old Nov 9th, 2015, 17:25   #8
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Fuses received, thanks. I owe you a beer or two.
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Old Oct 29th, 2017, 23:09   #9
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Quote:
Originally Posted by amazon69 View Post
Hi,

Has anyone found a source of the 25a short fuse that the amazon uses other than Brookhouse? They have them, price is ok (£3..a lot for a fuse but cheap in the scheme of things) only thing is the postage cost. I keep forgetting to add a couple to an order, and I need some for my Merc. Otherwise, if anyone has an old fuse with just the ceramic left maybe they could send it to me? Happy to pay a few bob. I could then make one up out of a new fuse and the old ceramic. Thanks.

Dave
I hope this isn’t old news but a buss AGA 25 with a little tip of solder at each end works great. Rough up the end, apply flux then apply a little dot in center and it clips right in. Try to make the dot just big enough to provide an attachment point. Too much and it will not fit. Try not to over heat the fuse. One step above cold joint is perfect. I’ve made a few for spares. Better than paying $5 US for ones on the web.

“Undead 66 amazon”

Last edited by homer17; Oct 29th, 2017 at 23:32. Reason: ACA should be AGA
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