Joeuf Coffee Grinder.

B.Meldon · February 11, 2020, 09:27

Quote from: Stephen Rainsbury on February 10, 2020, 21:53

That is also very interesting to know.

Thanks Gents, I have three of these now all in various states of repair, but that is an avenue I hadn't considered. I might even trying fitting a coreless motor instead.

Stephen

Back in the 1980's I fitted several of these chassis with replacement ECM1 motors using the original gears. They did run better and there was also room for additional weight, but they were not much quieter than with the original motor.
The 1980's version with the five pole, skew wound Mabuchi can motor also run better, they are a little quieter than the old locos as well, but not by that much.
So I would tend to agree that it is the gears that make the noise combined with the body that acts as a sound box.
That said modern motors may well be a lot quieter than the old ECM1 and 1980's Mabuchi motors were.
(The ECM1 motors were also used by Graham Fairish in the earliest version of their N gauge 0-6-0 chassis.)

Stephen Rainsbury · February 11, 2020, 22:45

Quote from: BernardH44 on February 09, 2020, 22:47
If I remember correctly, I used a 1.7mm root pulley on the motor driving to a 9mm pulley on the layshaft, using a 10mm belt. No chassis modifications were necessary, there is just enough room for a 9mm pulley instead of the layshaft gear, with the belt down in the groove. One could also use an 8mm pulley, but check Nigel's sizing chart for correct belt tension.

OK I am hooked an want to try this, how did you get the old gears off, just pull them?
Stephen

Graeme Dunbar · February 12, 2020, 08:41

You are on the slippery slope ... ;) ;D

Something like this. It is not quite the same as my one. Others I'm sure will be able to recommend a good version.

https://www.ebay.co.uk/itm/Expo-Worm-Pinion-Gear-Pullers-Suitable-for-The-Railway-Modeller-00-HO-N/264530901480?epid=8003966816&hash=item3d974539e8:m:mRSpDQliv7aN3cuP0FmuiZA

Stephen Rainsbury · February 12, 2020, 12:06

Quote from: GraemeD on February 12, 2020, 08:41
You are on the slippery slope ... ;) ;D

In for a penny as they say.
I have only been back into this for 6 months but already having to find homes* for a pack of Phosphor bronze pickup strip, a box of magnets, now lead strip and gears makes me realize that this is much deep rabbit hole that would appear on the surface :-)
* Lets not mention the 6 show box sized "Really useful" boxes that are now sat on the floor looking for a home and a shelf that used to hold two small synthesizers** now handed over to paints
** No synthesizers were harmed in the making of this hobby - they have been built into flight cases ready for my world comeback tour :-)

BernardH44 · April 04, 2020, 21:31

The belt drive.
Yes, I just gently pulled off the gear from the motor spindle. The one I removed from the motor shaft was metal If I remember correctly. The layshaft gear also just pulled off.
One loco came with no gear on the motor spindle, so that was not a problem. You need to check the diameter of the motor shaft compared to the hole in the pulley. Nigel Lawton also sells motors, and you could take the opportunity to re-motor if you think the existing motor is too old. The 9mm pulley means that the motor is spinning quite quickly, so an 8mm pulley might be good.
Nigel has a sizing chart on the website to determine which belt and pulley combination to use.
Good luck,
BernardH

Stephen Rainsbury · April 05, 2020, 20:12

Quote from: BernardH44 on April 04, 2020, 21:31
The 9mm pulley means that the motor is spinning quite quickly, so an 8mm pulley might be good.
Nigel has a sizing chart on the website to determine which belt and pulley combination to use.

Thanks, that is certainly on my "Todo" list. I have two coffee grinder chassis work OK which I will probably convert, and a third which has ended up with all the crappy bits and hardly crawls. I might convert that too at some point but I need to make decent pickups first.
I don't have any form plans for the bodies, I only have one complete one with a roof, two reasonable ones with no roof and two that have partially melted. First job is to get the running an see if I can fit a DCC decoder :-)

B.Meldon · April 06, 2020, 11:09

Just a quick note on drive belts, in that they get 'set' in shape if they are not used regularly.
If you are not going to use a loco at lest once a week it is best to slip the belt off the pully so it does not get set in one shape.

Brian Meldon

Stephen Rainsbury · April 06, 2020, 13:57

Quote from: B.Meldon on April 06, 2020, 11:09
Just a quick note on drive belts, in that they get 'set' in shape if they are not used regularly.

Its a good point, you used to get the same problem with portable cassette players.