gearboxes for split axles

[John CutlerParticipant]

Paul Willis kindly supplied these photos to show how a High Level gearbox can be cut and shut to fit within the confines of a split axle.

It looks simple but I would like to know a bit more please.
The big question is how do you ensure this assembly ends up being square?
Secondly do you use washers to ensure clearances on the intermediate axle?

It is annoying that the higher ratio HL gearboxes (e.g. the Humpshunter) are the widest.
(Incidentally the High Level web site does not show their gearbox widths but the EMGS manual show them on page 2.7.0.(6)).

• This topic was modified 3 years, 2 months ago by John Cutler. Reason: original photos lost!
• This topic was modified 3 years, 2 months ago by John Cutler. Reason: original photos lost!

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[Paul WillisParticipant]

Sorry John.

I just wrote a very long reply, explaining the process, and the EMGS Forum crashed when I attempted to upload the photos. It’s just not very good software, and the size restriction on images is ridiculous.

I’ll have a look if I wrote about it at the time on the Scalefour Forum, and post a link from there.

Cheers
Paul

[Paul WillisParticipant]

@Paul Willis said:
Sorry John.

I just wrote a very long reply, explaining the process, and the EMGS Forum crashed when I attempted to upload the photos. It’s just not very good software, and the size restriction on images is ridiculous.

I’ll have a look if I wrote about it at the time on the Scalefour Forum, and post a link from there.

Cheers
Paul  

Hi John,

Have a read here. There is a longer narrative, and more pictures to show how it is done. Copy/paste the URL below.

https://www.scalefour.org/forum/viewtopic.php?f=90&t=6821&p=75179&hilit=gearbox#p75179

Cheers
Paul

[Geoff StennerParticipant]

I have used these gearboxes on split axles. Sometimes it is a question of getting the split in the right place, but another option is to turn, or get turned for you a tufnol axle bearing to replace one of those in brass. The whole assembly remains live to one side of the frames, but will not bridge to the other if care is taken with further insulation inside the loco body.

Geoff Stenner

[Paul WillisParticipant]

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