Wrekin problems

[markrussell]

Hi I have a problem with me Wrekin and wandered if anyone else can shed any light on it. Some of the cranks on the end of the axles are loose and have a lot of play in them. Is this correct? Can anyone please check their Wrekin and let me know?
Thanks,
Mark

 

[New Haven Neil]

This is quite a common issue, you need a 0.9mm (smaaallll!) allen key to tighten them - there is a tiny grub screw in the sides. If you keep running it with them slack, eventually one will fall off.

NHN

 

[bobg]

I haven't one to check, but experience would suggest not; but then how loose is loose? Next question, what holds them in place? Are they pegged with taper pins,or just pressed on to the ends of the axles?

Edit: - Cheers Neil. You posted while I was typing.

 

[MRail]

This is quite a common issue, you need a 0.9mm (smaaallll!) allen key to tighten them - there is a tiny grub screw in the sides. If you keep running it with them slack, eventually one will fall off.

NHN

I've had exactly the same problem.
Another problem was getting hold of a 0.9mm Allen key!!
When I did get one (in a set) it was very flimsy and rounded off.
I eventually filed a larger size down to fit, by trial & error.
The crank still occasionally works loose.

 

[Ferrysteam]

Try TrackShack.

 

[Sea Lion]

Yes we stock the small Allen keys for the cranks, Accucraft state they are 0.8mm.

Have to stick them to a bit of cardboard for posting otherwise customers think they have received an empty envelope!!

When looking at sets of Allen keys normally available in the shops they start at a minimum of 1.5mm.


Happy steamings,

John

 

[New Haven Neil]

Whoops, I thought they were 0.9, sorry. They are so small it's hard to see that they are a hexagon, from these eyes anyway!

 

[andyspencer]

I have just returned from a visit to 'Chuffed2Bits' in Warwick, and can confirm that they stock this size of allen key for doing this job.

http://www.chuffed2bits.com/ < Link To www.chuffed2bits.com

 

[steamtom1]

With these small hex drivers I usually prefer one with a screwdriver type handle.

Are you sure it is 0.8 mm?

http://media.digikey.com/pdf/Data Sheets/Wiha PDFs/Hex Precision Series.pdf < Link To Wiha makes a 0.7mm and a 0.9mm, but no 0.8mm.

 

[MRail]

Are you sure it is 0.8 mm?

http://media.digikey.com/pdf/Data Sheets/Wiha PDFs/Hex Precision Series.pdf < Link To Wiha makes a 0.7mm and a 0.9mm, but no 0.8mm.

I found it's between two standard sizes, so it probably bears out the above.

 

[Ferrysteam]

I find the ones supplied with Regner engines fit,I think they're 0.9mm.

 

[bobg]

Are you sure it is 0.8 mm?

http://media.digikey.com/pdf/Data Sheets/Wiha PDFs/Hex Precision Series.pdf < Link To Wiha makes a 0.7mm and a 0.9mm, but no 0.8mm.

I found it's between two standard sizes, so it probably bears out the above.

I which case it's possibly Imperial, something like a No 66 gauge. A little odd though, I would have to say, or perhaps just undersize metric keys. these things do happen in production.

 

[Sea Lion]

I have seen 0.7 and 0.9mm for sale on the web, thought of getting some for the shop but decided to have a word with Accucraft UK to check what was actually required. I think the figure of 0.8mm came from them measuring a key, but I'm not sure of the 'technicality' of the measuring device used. Anyway the Allen keys we are calling 0.8mm come from the Accucraft factory and do fit the fly cranks. I would presume this is where Mike at Chuffed2Bits also got his from.

Happy steamings,

John