[[email protected]]

Some questions.

I was happily grinding my angles when the bearings began to go. The gearbox was hot though the motor was cool, and it felt like an engine that kept missing. It made unwelcome bearing noises as it spun down. Also the metal was bouncing about a bit on the disc surface, which the new machine doesn't do.. So the bearings somewhere in there are almost toast. Is it worth unscrewing the gearbox & lubing or anything? It's a cheap Ferm I got 15 years ago for £15 or 16, I certainly can't complain.

Got a new grinder from Aldi. Was going to get a Mak but Aldi had them in stock, Screwfix didn't so changed my mind, needed to get on with it. It runs smoothly. It has a huge long tail, perhaps for better stability I don't know. Holding the trigger on is a bit of a pain, the old Ferm just locked on. It has a more effective guard - 2 in fact. But I think it's faulty as the disc spins up much slower than the motor does. Just wanted a quick sanity check that this isn't some weird sort of mechanical soft start mechanism. It did the job no problem though. It has variable speed too, not often useful but will be for paint stripping.

Aldi also have 4 diamond discs for 3.99, & 10 cutting discs + 1 grind disc for 3.99.


NT

[Brian Gaff]

Well maybe it does have some form of soft start to not load the motor too
much at start which is when it will draw most current. No idea how they
might do this unless its some kind of centrifugal clutch.
Brian

--
----- --
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
wrote in message
...
Some questions.

I was happily grinding my angles when the bearings began to go. The gearbox
was hot though the motor was cool, and it felt like an engine that kept
missing. It made unwelcome bearing noises as it spun down. Also the metal
was bouncing about a bit on the disc surface, which the new machine doesn't
do. So the bearings somewhere in there are almost toast. Is it worth
unscrewing the gearbox & lubing or anything? It's a cheap Ferm I got 15
years ago for £15 or 16, I certainly can't complain.

Got a new grinder from Aldi. Was going to get a Mak but Aldi had them in
stock, Screwfix didn't so changed my mind, needed to get on with it. It runs
smoothly. It has a huge long tail, perhaps for better stability I don't
know. Holding the trigger on is a bit of a pain, the old Ferm just locked
on. It has a more effective guard - 2 in fact. But I think it's faulty as
the disc spins up much slower than the motor does. Just wanted a quick
sanity check that this isn't some weird sort of mechanical soft start
mechanism. It did the job no problem though. It has variable speed too, not
often useful but will be for paint stripping.

Aldi also have 4 diamond discs for 3.99, & 10 cutting discs + 1 grind disc
for 3.99.


NT

[Tricky Dicky[_4_]]

My angle grinder has a soft start more than likely due to a centrifugal clutch as the motor turns at full speed whilst the disk slowly gets up to speed. A clutch seems a good safety feature considering the potential for the cutting disk to jam.

Richard

[newshound]

On 30/09/2018 10:48, Tricky Dicky wrote:
My angle grinder has a soft start more than likely due to a centrifugal clutch as the motor turns at full speed whilst the disk slowly gets up to speed. A clutch seems a good safety feature considering the potential for the cutting disk to jam.

Richard

I've never seen a mechanical one, even though this sounds like. Never
come across a soft start "4 inch" one, but my big "10 inch" one is (they
have quite a kick without).

[[email protected]]

On Sunday, 30 September 2018 11:31:29 UTC+1, newshound wrote:
On 30/09/2018 10:48, Tricky Dicky wrote:

My angle grinder has a soft start more than likely due to a centrifugal clutch as the motor turns at full speed whilst the disk slowly gets up to speed. A clutch seems a good safety feature considering the potential for the cutting disk to jam.

Richard

I've never seen a mechanical one, even though this sounds like. Never
come across a soft start "4 inch" one, but my big "10 inch" one is (they
have quite a kick without).

I can't imagine why they'd include one on a low price machine. I'm just crossing my fingers it's not faulty.


NT

[Dave Plowman (News)]

In article ,
newshound wrote:
On 30/09/2018 10:48, Tricky Dicky wrote:
My angle grinder has a soft start more than likely due to a
centrifugal clutch as the motor turns at full speed whilst the disk
slowly gets up to speed. A clutch seems a good safety feature
considering the potential for the cutting disk to jam.

Richard

I've never seen a mechanical one, even though this sounds like. Never
come across a soft start "4 inch" one, but my big "10 inch" one is (they
have quite a kick without).

Quite. My large Lidl one bought some years ago has a soft start. I've got
three small ones, none of which do. Including a posh name one.

--
*When blondes have more fun, do they know it?

Dave Plowman London SW
To e-mail, change noise into sound.