N Gauge Forum

General Category => N Gauge Discussion => Topic started by: geofff on November 13, 2025, 01:28:04 PM

Title: Second Hand locomotive
Post by: geofff on November 13, 2025, 01:28:04 PM
Hello , I've bought yet another second hand loco (Dapol class 22), via a dealer on eBay. It needs at least 45% power to move, but it is in very good cosmetic condition. As suggested by the retailer I've very lightly oiled the exposed cogs underneath the  loco, run it for 30 minutes each way and cleaned the wheels. There is some improvement. I cannot carry out any service on the item.

What should I expect from a second hand loco that I've paid £100 for? My other locos ( a mixture of Farish , Dapol and Sonic) all run at between 20 and 30% so the track seems to be adequate.


Geoff
Title: Re: Second Hand locomotive
Post by: ntpntpntp on November 13, 2025, 02:22:58 PM
Some models are geared slower but 45% sounds like it needs a service.   Without comparing it like for like with another Dapol 22 it's difficult to tell.  Can you measure the current draw? (run on DC with a multimeter on Amps in series with the track feed).   Does it get warm to the touch when running?
Lubing the gears will only get you so far, it may be other bearings which need lube, it may need the motor commutator cleaning and/or brushes cleaned or replaced (depends on the motor used as to whether or not that's even possible). 

For £100 I'd expect it to be as new.  Was it all nicely boxed with blurb, or does it look well used, wheels dirty or worn, fluff in the bogies etc.? I'd be wary of second hand DC locos priced that high unless it's something very rare and have confidence any minor issues can be fixed.
Title: Re: Second Hand locomotive
Post by: Bob Tidbury on November 13, 2025, 04:32:55 PM
I have 2 class 22s and they both run very slow when first turned on But do get a bit faster once run ,But I think they do have  low gearing so they  run at more prototypical speed ,after all they were NOT express locos .
Bob
Title: Re: Second Hand locomotive
Post by: GrahamB on November 13, 2025, 05:08:47 PM
Are you running dc or DCC?

I once won an 08 on ebay, listed as a "slow runner". It was indeed a slow runner, but only because it had been converted to DCC and programmed to run correctly - even on dc.

Not everything runs like a scalded cat.
Title: Re: Second Hand locomotive
Post by: geofff on November 13, 2025, 06:00:25 PM
Thanks for the replies. My big issue is the amount of power it needs to just move - it needs about 45% to very slowly move.
Title: Re: Second Hand locomotive
Post by: Newportnobby on November 13, 2025, 06:07:51 PM
As previously stated £100 is top end for a used loco. You don't say if you're using DC but could the loco be DCC fitted as, to get such a loco moving, it takes a lot of throttle  :hmmm:
Title: Re: Second Hand locomotive
Post by: ntpntpntp on November 13, 2025, 06:19:50 PM
NPN makes a good point:  a DCC fitted loco running on DC will require the knob turned up a bit more to "wake up" the decoder.

I've had a couple of bargains that way - a DCC loco for the price of a £50 DC model.

Pop the body off and take a look?
Title: Re: Second Hand locomotive
Post by: njee20 on November 13, 2025, 08:45:59 PM
Decoder fitted was my first thought, and would explain the higher price. For £100 it should work well, return if not. They're not hugely rare are they?
Title: Re: Second Hand locomotive
Post by: geofff on November 13, 2025, 10:53:48 PM
Thanks for all of your help and advice. The dealer stated that it is DC/analogue. Looks like I've overpaid again. I think that I'll return it.

Again, very many thanks.
Title: Re: Second Hand locomotive
Post by: ntpntpntp on November 13, 2025, 11:30:59 PM
Do take a moment to remove the body and check the chassis for a decoder, it will be obvious whether or not it is DCC fitted.
Title: Re: Second Hand locomotive
Post by: njee20 on November 14, 2025, 12:14:39 AM
Agreed, that's much less effort than returning it if that proves unnecessary.
Title: Re: Second Hand locomotive
Post by: geofff on November 14, 2025, 12:09:45 PM
I removed the body of the class 22. Photo attached , but not sure what I'm looking for/at.

Can you please advise as I understand that I was looking for a DCC chip?

Regards
(https://www.ngaugeforum.co.uk/SMFN/gallery/156/9429-141125120926.jpeg) (https://www.ngaugeforum.co.uk/SMFN/index.php?action=gallery;sa=view&id=156209)
Title: Re: Second Hand locomotive
Post by: njee20 on November 14, 2025, 01:53:53 PM
Yes, that's right. No decoder there though, the small green rectangle marked "Top" and 1-6 is the blanking plug. A decoder would go in place of that, but have a lot more components on it.

I'd send the loco back, sounds like it's faulty.
Title: Re: Second Hand locomotive
Post by: Bob G on November 14, 2025, 02:00:39 PM
Interestingly I just checked mine out, and one of my secondhand class 22s does indeed have a DCC chip fitted! It has two coils topside and a few more bits underneath.

And it runs slower than the others.
Discoveries, discoveries.

Bob
Title: Re: Second Hand locomotive
Post by: njee20 on November 14, 2025, 02:11:22 PM
That still sounds like a blanking plug to be honest, they do sometimes have 'stuff' on them. Easiest to post a photo.
Title: Re: Second Hand locomotive
Post by: chrism on November 14, 2025, 02:28:07 PM
Quote from: njee20 on November 14, 2025, 02:11:22 PMThat still sounds like a blanking plug to be honest, they do sometimes have 'stuff' on them. Easiest to post a photo.

My Jinty blanking plugs have a couple of coils on them - for RF suppression, I guess.
Title: Re: Second Hand locomotive
Post by: Bob G on November 14, 2025, 03:46:40 PM
Quote from: chrism on November 14, 2025, 02:28:07 PM
Quote from: njee20 on November 14, 2025, 02:11:22 PMThat still sounds like a blanking plug to be honest, they do sometimes have 'stuff' on them. Easiest to post a photo.

My Jinty blanking plugs have a couple of coils on them - for RF suppression, I guess.

Dang you are right. They are just a pair of RF chokes.
So I swapped the blanking plugs over and no difference. The faster 22 remained faster, the slower 22 remained slower. My purchasing spreadsheet tells me both were bought new. And I obviously didn't check one against another.

Hey Ho!

Bob