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Member postings for oldvelo

Here is a list of all the postings oldvelo has made in our forums. Click on a thread name to jump to the thread.

Thread: Amelia Earhart
02/07/2018 18:45:32

Hi All

Here is a link to BBC about Amelia Earhart


Sixty years after the Amelia Earhart flight Linda Finch successfully completed the circumnavigation in 1997

in a restored Lockheed Electra with a Grumman Albatross as a support aircraft.


Thread: Governor pulley belt
12/06/2018 22:09:39

Hi Bob

The pictures tell the story The alignment needs to be addressed as Brian and George point out. The belt on the top of the crankshaft pulley needs to be parallel with the centre line of the engine and parallel to the horizontal center line of the engine.

Photos Two and Three in you Album explain the anomaly in the alignment.

Other than this problem this is a very well constructed engine.

This link may explain it better and is also useful for all sorts of power transmission devices




Edited By oldvelo on 12/06/2018 22:19:28

Thread: Mini lathe 3 phase AC conversion
02/06/2018 05:36:18

Hi Sorry for the intrusion this is my slant on Rainbows question

"I'm just gonna be unhelpful and butt in here with a semi relevant question, anyone have a wild shot at the upper bound for safe maximum motor power on the lathe?"

It Depends on the size of the lathe. Pure Guess on my part that you have a far eastern lathe with a Hi-Low ratio gears that are adequate for the motor the manufacturer fitted.

Be prepared for breakages of the gears with a bigger motor fitted.

X2 mill Drill has the same head stock here is a link to the conversion I did six years ago and has run without any problems just a few more alterations.



02/06/2018 00:15:43


Many and varied replies to this thread read through with great interest as an owner of several re powered and modified machines.

Running any motor fitted with a cooling fan at way below it's rated speed will run hotter fit an auxiliary fan if this is a problem.

Blowlamp has an excellent suggestion for a re power for the average home workshop machines.


Thread: Electric Motors
01/06/2018 04:37:02

Hi Raph

You seem a little unsure of vee belt tension. You can do a rough check by pushing on a stationary belt with your thumb and be able to deflect the belt about 1 to 1.5 mm for every 100 mm shaft centres.


31/05/2018 02:53:24

Hi Raph

Check that the motor bearings are not binding and the lathe turns freely.

How big is the work you undertake. Large diameters and heavy cuts and feed rates will quickly use up available power.

Being a DC motor Addict another alternative is AC To DC converter-speed controller driving a DC motor.

One downside to single phase motors on a lathe is on another forum that i contribute to.


The reply sums it up very well. Keep us posted on progress


Thread: What's the best alternative to 'loctited'
23/05/2018 01:32:20


What is the best alternative to Loctite.

Take more care when machining and make it fit properly!!!

Not always look at the job in hand and formulate the best approach.


Thread: SC3 Headstock bearings
06/05/2018 05:16:59

"Does the plastic bearing cover have to be shimmed out to accommodate the extra width when fitting TRBs, if so by how much ?"

7206B is 17.25 mm wide

6206 is 16 mm wide

Polish the spindle opposite the chuck under the bearing to a firm sliding fit to allow the preload to be set properly.


Thread: Pressure as a unit of time
26/04/2018 15:41:42
Posted by Stewart Hart on 25/04/2018 16:23:24:
Posted by Speedy Builder5 on 25/04/2018 15:41:46:

When I was working, TIME = PRESSURE. in pressure terms, 0 Psi = breakfast at home, 70 Psi after the morning meeting, Mild panic at midday, no time for lunch. Most pressure came towards the end of the day at 300Psi so the clock was about right.

Never thought of it in them terms:- working under time pressure, or pressured by time, lack of time pressure etc etc.



Hi I made this to compensate for this by adding an unloader valve

Happy being retired this device is working perfectly for me.


Edited By oldvelo on 26/04/2018 15:50:12

Edited By oldvelo on 26/04/2018 15:52:49

Edited By oldvelo on 26/04/2018 16:00:29

Thread: Advice on Belt Tensioners
12/04/2018 04:39:19

Hi this is one from my album of the Vee Belt clutch on my wood lathe


More pics in my album may be what you are looking for

Not too clear thethe clutch lever goes just over centres and on to a stop that can just be made out in Pic  1

Edited By oldvelo on 12/04/2018 04:42:10

Edited By oldvelo on 12/04/2018 04:48:29

Thread: Tufnol (Textolite) as a material for pulley
25/03/2018 21:06:21


"Converting the drive to Poly-Vee would allow the use of much smaller pulley diameters."

I agree with Michael Poly Vee drive is the way to go having converted 8 machines in the workshop.

Aluminium being the material of choice for pulleys. No apparent wearing even on a very old drill press that came from a busy engineering workshop.


Thread: DC motor controler ?
22/03/2018 02:30:34

Hi Carl

Here is another link to a unit that may be useful. RS are way off with there description it is NOT AC to DC at all is is for a low power AC motor ( Extractor Fan)??? perhaps


Set up seems to be straight forward enough with the controller to match the motor.



Edited By oldvelo on 22/03/2018 02:35:32

20/03/2018 19:45:41


More info on the end use would be useful. Assumption is mother of all misunderstanding

X1 Mill ?

No connection with KB Electronics on my part just satisfied user

Start looking here


Expensive but very reliable

More here using one from this source using one on a band saw.


Thread: Yet another bandsaw question
16/03/2018 02:49:02

Hi Robin

Looking at the photo and your description shows things to check. The bore of the pivot is not parralel to the mitre base of the casting the saw is mounted on or the bottom of the vice and the main frame casting the saw pivots on.

Excess clearance on the saw frame pivot Bush?

Check that what looks like there is two castings bolted together  the vice casting and the base of the mitre and could be separated and shimmed to correct the error

Unfortunately you will need to dismantle to check on a flat and true surface.

This error should be able to be corrected with  time and patience as You have identified  the problem





Edited By oldvelo on 16/03/2018 02:59:56

14/03/2018 18:36:19


A link to an excellent manual on the set up of a band saw By John Pitkin



Thread: Destroyed lathe
24/01/2018 19:19:09


Bazyle has is right normal pallet is totally inadequate to transport any lathe - mill other than a small bench top models.

Build a timber frame that is Bolted through with large washers as nails can pull out easily.

Thread: Newton Tesla Electric Drives
20/01/2018 18:28:33


Perhaps this is an intrusion But hopefully it will explain why "Single Phase Motors" run roughly and cause Chatter Marks when Machining. Had this explained to me on another forum

To Quote Ken's Explanation


I hope this will convince more out there that there are better alternatives to "Single Phase Motors"

PS The Extra cooling fan is a great idea

Thread: Lathe start-up speed best practice.
07/12/2017 18:38:25

Hi I have been fiddling with variable speed DC drives for a number of years now and found that controllers that the ramp up to speed with variable adjustment will give the best service.

Read the manual for your machine and follow the instructions there are far to many speed controllers out there to be able to offer a universal answer covering all.

If you have deep pockets go for an industrial controller rated for higher power than the motor Horse Power.

Properly adjust the settings to suit the motor then you can expect a long and trouble free life from it.

06/12/2017 07:48:36


Chainsaw bar oil has a "tackifier" additive to keep it hanging on even at very high speed.

It sticks on very well on the vertical slides on my mill.

The loading on a chainsaw links is extremely highly loaded compared with several Sq Cm of even a small lathe.

Any oil is better than no oil. Oil Little and often and regular wipe down works best.

Thread: The question about drawbar for milling machine.
23/11/2017 18:19:15

Hi Jens

Check my albums for all size lock bolts


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