Member postings for oldvelo

Hi

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.

Eric

"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.

Eric

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

Happy being retired this device is working perfectly for me.

Eric

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

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

Hi

"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.

Eric

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

**LINK**

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

Eric

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

Hi

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

**LINK**

Expensive but very reliable

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

**LINK**

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

Eric

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

Hi

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

**LINK**

Eric

Hi

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.

Hi JES

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

**LINK**

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

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.

Hi

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.

Hi Jens

Check my albums for all size lock bolts

Eric

No!

Hi Ken

Go for it a poly vee belt conversion is far superior to vee belts just look under the bonnet of any modern motor car.

One disadvantage is that the alignment of shafts and pulleys has to be spot on. No problem it engineering we do isn't it.

Converted my workshop drives to poly vee belts and no regrets on the Eight conversions so far.

The will drive at much slower speeds and bigger ratios.

Eric

PolyCarbonate is the way to go it can be shaped in a sheet metal folder Protect with thin cardboard sheet no heating required.

I have several for lathe and milling machine been in intermittent use for a number of years now.

Hi

Perhaps I Have read this wrong.

What is the Tractor Horse Power? Then a diesel of similar power to drive the machine directly would be the way to go.

Eric

Hi Mark

Is this the belt type on your machine "Gates 5M710. PolyFlex® 8902-0710 V-Belt - 5M Section, 3/16 in Top Width, 27.95 in Outside Length, Polyurethane Material "

What is the motor power on your lathe as this size seems to be big enough for nothing bigger than around 1/8 hp. unless on very large diameter pulleys with very high peripheral speeds are used.

Polyurethane belts do not perform very well when excess slippage occurs when used as a clutch.

Being a convert to "Poly Vee Multi Rib Belts I ditched Vee Belts on my machines where ever possible and have run them trouble free for several years now.

Broken belt suggests that it is being used to attempt to transmit a high torque loading on a very small belt cross section.

This MAY help better prices LINK   and in my VERY biased opinion a good deal

Eric

Edited By oldvelo on 10/09/2017 05:40:40

Hi Lee

The outer bearing needs to be a sliding fit on the spindle not a press fit. The spindle under the bearing needs to be reduced with emery cloth until the bearing will slide on with finger pressure only.

They need a light preload with the back nuts are essential holding the inner races taking up the free play.

Eric