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I would look at the carbs. used on model glow plug engines. These R/C engines throttle and have very good response. You could also look at 'Perry' pumps that provide constant fuel flow normally working off crankcase pressure

I can thoroughly recommend the Holly Buddy 2.5cc aero engine. Just completed my 3rd for Christmas presents. No castings and mine have all run perfectly. Regards, Steve T

Your suggestion has just given me another idea. Perhaps some very strong magnets on the faceplate could be used to act as guides for positioning the keats angle plate

Thanks fcheslop, That's very much the solution that seems easiest Regards

Thanks for your help goldstar. I'm leaning towards making up a 'mandrel' to fit the bore and holding this in a chuck fixed to the tailstock. This should enable the Keats plate to be roughly positioned and then only minor adjustments necessary. At least that's my present thinking. Steve T

Co incidental or what?? Spent most of yesterday afternoon trying ( & failing) to centre up a bore in a casting held in/on a Keats angle plate, mounted on a Myford face plate. Took me all evening to recover from the trauma:mad: Because the face plate has radial slots every movement of the angle...

Joe Pieczynski has several videos on holding & turning thin wall tubing on You Tube which might help

Hi Rodrigo Great job on the anodising. What dye did you use? I spent some 2 weeks last year experimenting with anodising with mixed results. Part of the problem was not being able to get de smut solution in the UK. I tried commercial red dye but the colour was more orange than red and it was...

If maching this sleeve in bronze how would you go about it? I.D. or O.D. first? If machining I.D. first would it be necessary to fit a removable liner inside to support the walls during machining of the O.D.? Any help appreciated as I have to make some similar bering sleeves. Regards, Steve T

Hi, Can the gearbox gear selections be made with the lathe & gearbox running? Or should you stop the lathe put the tumbler reverse lever into neutral and then select the required gears? Regards, Steve T

Smooth also, and let me know when available. I completed my first ever machining project a HB2.5 and it runs beautifully. Now in the middle of making a batch of 3 for friends. If you ever intend to modify the basic engine, provisions for a silencer and throttle would be fantastic. Many many...

Hi, Thanks for replying. Could you provide any more info. on the 'couple rods' and how they operate? Many thanks for your time Regards, Steve T

I have an 8" Boxford shaper that does not have a clutch as such. There is a handle which releases tension on the belts and ,according to the manual, can be used as an emergency stop. However releasing the belt tension does not stop the ram moving as the motor continues running and the belts tend...

One note. You can't use electric furnaces to do ' Casenit' metal case hardening as the fumes also harden the element causing it to fracture.

Hi Brian, Many thanks for replying. Seems like I have not lost all my grey memory cells yet! Stay Safe Steve T

I'm just about ready to machine a crankcase to fit 3/8"x1/2"x5/8" oilite bearings. In my mind I seem to remember advice that the hole should be to size even though the O.D. & I.D. of the bearing are slightly oversize. The bearing is then force fitted into the hole and the oilite material...

Thanks to all that responded. I eventually sorted the problem by using an ER32 collet mounted on a MT2 shank secured with a spindle draw bar. Steve T

As others have said I have some internal screwcutting in blind holes but also some matching male and female tapers. Thanks to everyone who has responded. Steve T

I could really do with turning some small items with the lathe running in reverse. This of course risks the chuck unscrewing. Has anyone come up with a workable solution to secure the chuck other than that used on the big bore Myfords which would mean modifying the spindle nose. Any suggestions...

Hi Nick, Thanks for your reply. That's certainly not an option I had come across before and something I would have considered if I hadn't succumbed to buying the M-DRO embedded cross slide system from Allendale at the Midlands Model Exhibition last week. Surprised at the lack of response to my...