Aristo stripped gear

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Wobbleboxer

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Now, I've never suffered from a stripped gear before, nor have any of my locos, so I had always assumed that the term meant that the teeth had stripped away from the collar.

I have an Aristo C-16 which was feeling a little poorly and not pulling very well. Following a strip down it appears the gear on the motor shaft is slipping. So much so that the centre of the gear has melted a little and it no longer sits square on the motor shaft. So, is this a stripped gear?

Either way, it's knackered and is looking more like a pile of spares than anything useful. Does anyone know if Aristo are better at providing spares than Bachmann appear to be? Otherwise, it off to the local model shop (singular), Maplins and other internet shops.


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hmm... going by the parts diagram it doesn't look like that gear is available by itself, it comes with the motor.

Like I said in the recent thread about a gear for a Bachmann Columbia; take some measurements, count the teeth and calculate the Module, I reckon you'll be able to find a suitable gear reasonably easily. It's a normal spur gear in this case.

I've actually got a complete C-16 chassis block sitting on my shelf, one of of those cases of "that'll be useful for a project one day". If I get some time I'll take a look at the gear and see if there's a match on the gear supplier sites I've used in the past.
 
ntpntpntp said:
I'll take a look at the gear and see if there's a match on the gear supplier sites I've used in the past.
Click to expand...

Thanks, or if you can point me in the direction of any useful sites I can try and find something myself.
 
From my measurements, I reckon it's 17 teeth, 15mm diameter, 2mm shaft, 5mm face.

There seem to be some 0.8Mod or 32P gears for RC cars with 17T that I think are about right for size but unfortunately these generally seem to take shafts larger than 2mm.

At this point I'd be considering wandering to my local RC car and plane model shop with the troublesome gear, to see if they have a match.

The site I used last time for gears, www.motionco.co.uk, don't seem to have anything suitable.
 
My local model shop have not been able to help in terms of providing a replacement gear, but the chap did make a possible sensible suggestion. He suggested drilling the centre of the gear out and adding a bit of brass tube.

Sounds feasible, the question is the best way to fix it in place. Is Araldite or similar going to hold on the plastic gear? Also, what's the best way of drilling the centre and keeping it centred without going off all over the place?
 
Simple - email aristocraft. I have never had a problem with an Aristo loco but they thats what I would do. Go to http://www.aristocraft.com/ they have an email address there. They also have a forum which Lewis Polk (the owner of Aristo) contributes to available from the web site. I feel sure that if you contact them they will sort you out. So far as I can tell they are very much a family business. Lewis' wife and son are also involved in the business and they do pride themselves on customer care. At least this is the impression they give so it would be good to try it out.

Fom some of the comments on their own forum it looks as though they do provide good service but it isn't always quick.
 
I did email them last week but haven't hada reply yet. Maybe waiting a little longer will be worthwhile.
 
This may be worth trying. You can't lose anything.....
I have had Bachmann gears comes loose. They are on a splined shaft. Does the Aristo shaft have splines - I can't tell from you pic.
Anyhow, I just melted my gear back onto the splines with a soldering iron. Just run the iron around the nylon near the shaft without touching the teeth!
It might be a bit harder for you if the gear is not centred, but if you reassemble it so it is meshing with its mate, it should be centred, then melt it.
 
Bits for the C16 sometimes come available on eBay if you do not have luck elsewhere....
 
Colin,

most of the folks at Aristo-Craft  were at a recent Show: maybe that's the reason for no reply just yet.   I use Skype and calls to the United States as 1p. per minute so I would 'phone if you have that - or any decent tariff with a UK provider.
 
I just got the newest Garden Railroads magazine (the US oct issue ) There is an article about replacing broken gears. You should be able to go to your hobby store for them. You can probably use gears from rc cars etc....
 
Greg, it's not a splined shaft it's smooth, so would probably ave less uck with your suggestion if I tried it.

I've had a reply from Aristo now and a second from their spares people. We're trying to identify whether it's a new or old model. Search me, how do I find that out?

Anyway, looks like progress is being made. Thanks all, will keep you updated.
 
Wobbleboxer said:
I've had a reply from Aristo now and a second from their spares people. We're trying to identify whether it's a new or old model. Search me, how do I find that out?
Click to expand...

Well the first models were made by Delton and the very latest version Aristo models have finally corrected the incorrect cylinder position. These latest models have the cylinder center line, i.e. the piston rod, the same hight as the driving wheel centers. On all earlier models the cylinders were too high. However I don't know how many versions there are between the very first and the latest. Maybe someone on the Aristo forum could help.
 
Shame it's in bits, as it makes aligning the pistons a little tricky. I've put enough back together to see that they don't align so I'll assume it's an old one. How old is old anyway, when was this change made? I bought this 3 or 4 years ago 2nd hand from the States and had worked on the basis that it was already a few years old.
 
Aristo models usually have a little transfer on them somewhere which says the word Aristocraft and the year of manufacture. It should be somewhere on the bodywork of the loco or tender. All you have to do is find this and you have the answer they need!

Aristo should really have told you this - unless of course the C16 doesn't have one.
 
Spule 4 said:
The 1998 diagram shows gears the same as yours?
http://www.aristocraft.com/techinfo/pdf/c-16.PDF
Click to expand...


That's the one, part number 71 although it looks like the gear and motor come as one. Still, cheaper than a full block if I can get one.


Spule 4 said:
Also, is the "block" metal or plastic? If plastic, it may be the Delton block.
http://www.girr.org/girr/tips/tips5/c-16_motor_block_small.jpg
Click to expand...
Metal, like that one.


Am waiting on the guy from Aristo to get back to me but they do seem to be working on it.
 
The 8-coupled brick from the older Aristo C-16 has always struck me as being a bit undergeared, and the motor is high current.

I've often been sorely temtped to chop the top off the brick and try mounting a new motor with gear - trouble is that I'm not sure about my bodging capabilities on that one :rolleyes:
 
3 cheers for Aristocraft. After a lengthy exchange of emails (the time difference didn't help) I have tody received a replacement motor and gear assembly from the US of A. Free, gratis and for nothing too.

All I need to do now is rebuild it.

:clap::clap::clap:
 
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