My green Bosch grinder has given up the ghost - a burn-out in one of the windings. While I investigate the cost of repair, I took out the brushes and put them in my blue grinder, which has been resting for a while.
The fittings were different, so I trimmed down and soldered the bit of brass on the end of the brush wire to the brass terminal, on the grinder, which usually accepts a push-on type connector. I can clean the terminals up later , next time I buy standard brushes for it.
My question is this - could these terminals get hot enough in use to melt the solder? I think not, but thought I should ask.
It works very well at the moment.
A bit of advice on temperature regarding soldering, please.
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Dean
- Minor Legend
- Posts: 2180
- Joined: Fri May 30, 2008 9:41 pm
- Location: Sutton Coldfield
- MMOC Member: No
You should be fine, I used to solder brush wire on competitive model car racing motors. These used to run mega hot, you couldn't touch them after a race! Provided it's regular solder of course and not the low melt solder as used on scale brass models.
My Minor:
A Clarendon Grey 1953 4 Door Series II.
MMOC - 66535
A Clarendon Grey 1953 4 Door Series II.
MMOC - 66535
Thanks again!
It will cost nine British fish and chip vouchers to have the burnt-out coil done. This seems reasonable, although I bought the (green) grinder at Homebase in High Wycombe, three years ago, and it cost 39.99. I was surprised at the low prices in Britain....in Poland, imported goods such as Bosch used to be subject to an import tax which took the price up the same price it would have cost in the country of origin, if a similar Polish-made product were available.
I don't know if things have changed since EU accession. I haven't bought anything in Poland since they joined the EU.
It will cost nine British fish and chip vouchers to have the burnt-out coil done. This seems reasonable, although I bought the (green) grinder at Homebase in High Wycombe, three years ago, and it cost 39.99. I was surprised at the low prices in Britain....in Poland, imported goods such as Bosch used to be subject to an import tax which took the price up the same price it would have cost in the country of origin, if a similar Polish-made product were available.
I don't know if things have changed since EU accession. I haven't bought anything in Poland since they joined the EU.
"No name power tools"????
Do you love your eyes, your fingers, your skin?
I do!
It is not only a false economy to buy this (for the mods...un-named) rubbish, it is also dangerous. How it gets into the country I have no idea!
I bought a Bosch 'blue' (professional standard) angle grinder in 1994, and with it have ripped the guts out of so much stuff, you wouldn't believe it. During that time, it has needed a new switch.....I wasn't surprised......that switch had been on and off more times than politicians make fools of themselves!
We are allowed to do this, as I understand forum terms and conditions......
GO BOSCH!
More 'rip' than Jack himself!
PS...I 'tweak' the brush spring pressure, to preserve the commutator....I think manufacturers set it at too high a downward pressure, so things wear out!
Do you love your eyes, your fingers, your skin?
I do!
It is not only a false economy to buy this (for the mods...un-named) rubbish, it is also dangerous. How it gets into the country I have no idea!
I bought a Bosch 'blue' (professional standard) angle grinder in 1994, and with it have ripped the guts out of so much stuff, you wouldn't believe it. During that time, it has needed a new switch.....I wasn't surprised......that switch had been on and off more times than politicians make fools of themselves!
We are allowed to do this, as I understand forum terms and conditions......
GO BOSCH!
More 'rip' than Jack himself!
PS...I 'tweak' the brush spring pressure, to preserve the commutator....I think manufacturers set it at too high a downward pressure, so things wear out!
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linearaudio
Agreed, and disagreed!
I have a green Bosch beauty, didn't realize how much you take them for granted until it suddenly started slowing up. I did the right thing and switched off, rather than hope it would improve
. Luckily its only the 607 ballrace at the commutator end broken up, so a cheap fix.
BUT..... I also abuse a "no-name" (Nu-Tool) grinder...and that hasn't killed me yet, despite being worked hard! I keep a cutting disc in the Bosch, and a grinding one in the NT. It doesn't have the balance or ergonomics of Bosch though, and sounds a bit coarse, but it bounces just as well as the Bosch when dropped
I have a green Bosch beauty, didn't realize how much you take them for granted until it suddenly started slowing up. I did the right thing and switched off, rather than hope it would improve
. Luckily its only the 607 ballrace at the commutator end broken up, so a cheap fix.BUT..... I also abuse a "no-name" (Nu-Tool) grinder...and that hasn't killed me yet, despite being worked hard! I keep a cutting disc in the Bosch, and a grinding one in the NT. It doesn't have the balance or ergonomics of Bosch though, and sounds a bit coarse, but it bounces just as well as the Bosch when dropped
I suppose, at the back of my mind when I posted, was that an experienced user of grinders can assess more accurately what he or she has in his or her hands, and judge its merits or lack of them.
A novice would obviously not know the difference, and should steer clear of 'cheapos' in the first instance.
I once bought a 'cheapo', to use with flap discs, thus saving time changing over from cutting and grinding discs to the flap disc, and back again.
I got three minutes from it! The commutator end bearing disintegrated, and on inspection (we can't resist that, can we?) I found that the bearing had consisted of six small balls set in a flimsy mild steel 'open' race - just a circle of metal with recesses cut out to hold the balls! You'd get a better bearing in Barbi's bike!!!!
The Bosch has that kind of bearing in which the balls are completey enclosed between inner and outer hardened-steel races, and the whole thing sealed against dirt.
Luckily, I emerged from the incident unscathed. But if you start to ponder what might have happened........
A novice would obviously not know the difference, and should steer clear of 'cheapos' in the first instance.
I once bought a 'cheapo', to use with flap discs, thus saving time changing over from cutting and grinding discs to the flap disc, and back again.
I got three minutes from it! The commutator end bearing disintegrated, and on inspection (we can't resist that, can we?) I found that the bearing had consisted of six small balls set in a flimsy mild steel 'open' race - just a circle of metal with recesses cut out to hold the balls! You'd get a better bearing in Barbi's bike!!!!
The Bosch has that kind of bearing in which the balls are completey enclosed between inner and outer hardened-steel races, and the whole thing sealed against dirt.
Luckily, I emerged from the incident unscathed. But if you start to ponder what might have happened........