Randa A type A lathe

[Kevin 3d HoeferParticipant @kevin3dhoefer47061]

Hi All

I've recently become a member as well as having acquired a Landa A type A lathe. Unfortunately it has quite a few parts that are missing. Another problem is that I'm from South Africa and spares for this lathe is non- existent over here. I'm looking for the small gear on the back of the main spindle shaft 35teeth as well as both sets of gears on the banjo type arm, also the gear on the feedscrew and finally a drill chuck for the tailstock. I know I'm asking a lot and would appreciate whatever help is available. Regards

Kevin Hoefer

[Kevin 3d HoeferParticipant @kevin3dhoefer47061]

Change gears and tailstock drill chuck

[JourneymanParticipant @journeyman]

Welcome aboard Kevin. Are you sure about the spelling can find no trace of a Landa but Lathes.co.uk list a RandA model A. Let us know if this is the right one or post a picture if it isn't. How to post images info *** HERE ***

John

Edited By Journeyman on 08/11/2022 13:49:17

[BazyleParticipant @bazyle]

The Randa uses 20dp changewheels the same as the post war Myford but normally with a little pin rather than a keyway to join them in pairs when needed. Note that this pin is much smaller as are the gears compared to a Drummond. I've just looked at the Lathe.co.uk site and amazingly there are no pictures of the gears exposing the pin! Perhaps someone can pop a picture on here.
If you have no changewheels at all you could consider getting a set for a mini-lathe instead and adapting them. If you go the Myford route you have to fit a pin and make a corresponding hole. So ideally you need one to copy. If you or a friend are into 3D printing you could make the.

Note that the gears used in the backgear are non standard and very slightly larger than 20dp. People who break one do often replace with a Myford changewheel but they are thinner and don't quite mesh optimally. There have been several threads on the forum about these lathes and one covered this problem.

[BazyleParticipant @bazyle]

I think the tailstock is MT1

[Kevin 3d HoeferParticipant @kevin3dhoefer47061]

Hi

Thanks for the prompt reply and info. You are correct it is a Randa lathe not Landa. I spelt it incorrectly. I've checked in shops and websites locally and only MT2 arbor sizes are available but I'm sure I'll find one.

Regards

Kevin

[Lee RogersParticipant @leerogers95060]

Chronos do a range of quite decent MT1 tailstock bits and bobs.

[Andy CarlsonParticipant @andycarlson18141]

If you get an old school Jacobs chuck then you can swap the arbor (tapered part). The arbor has a taper that is pressed into the back of the chuck body – these tapers are JTwhatever. (J for Jacobs presumably)

Getting the arbor out of the body can be somewhat, err… non easy. Wedges are available to do the job and you can find YouTube videos showing them in use. On mine someone had been there before me and drilled a hole in the back of the body so I could drift the arbor out without needing any wedges.

As a rule of thumb the max capacity of the chuck should be similar to or less than the wide end of the taper. The bigger the drill, the more likely the Morse taper is to break loose when drilling.

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