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: Bandsaw woes.|
Hi Robin I have a copy on blade tracking for band saws By John Pitkin
I have found this invaluable please add credits if you post the contents on line.
|Thread: Noisy Lathe Gearbox|
Single Phase motors have a tendency to cause chatter in lathe and mill gearboxes and run roughly due to not being synchronized with the 50 cycles per second power supply when they run at 1425 RPM.
Cured mine by Replacing the drive motor with a Variable Speed DC motor and pumped oil supply using a fully synthetic 30 oil . Photos in My albums.
The problem with E.P. oil attacking bronze is when it becomes contaminated with water the reacts with the sulphur additive used for Extreme Pressure loading on gears.
An alternative used in extremely high humidity used on worm gearboxes was 600w steam cylinder oil.
Edited By oldvelo on 08/02/2020 09:52:33
|Thread: Morse Taper Removal|
There are More
|Thread: Strange (to me) chuck jaw design.|
Never had a new fangled chuck key in the 1950's. Old mentor " It's called a chuck key cos if you leave it in the chuck the lathe can chuck it at you".
|Thread: A simple material stand for a power saw|
Good way to use axle stands for a base. A Three Legged Base is always better than a round base. If the load becomes unstable and is all on two legs they will not be on a single point as with a round base that becomes a wheel.
|Thread: V-belt vibration in Ajax AJ8 horizontal milling machine|
"Still no option for fine adjustment of belt tension". It is possible by Inserting "Ü" shape shims around the hold down bolts Between the base and the mill.
|Thread: What to do with a stationary engine|
The engine used clockwise rotation as a standard, but some Anti-clockwise engines were factory produced. The exhaust and inlet is the same on both engines. I used a Lister D on a shearing plant in the 1950's no impulse magneto drive fitted.
Comparing the two creations shown is that the motors rotate in opposite directions. With a single cam on the camshaft. Clockwise or Anti Clockwise driving dog and crank handle available from the factory.
|Thread: What are these pliers for|
I have used a similar pliers to fix chicken wire netting to a wire fence.
|Thread: Model aircraft pilots angry over drone laws|
Well Said Nigel
Sadly intelligent and responsible expert model fliers are being lumped in with cash rich morons that buy into a technology that is completely beyond them.
Putting drones in the hands of drones is now a reality
|Thread: Bandsaw speed|
You will need to slow down the band speed with a counter shaft or gear box. May I suggest you use Poly Vee Belts 6 ribs will be more than adequate for the existing motor. Pulleys are easily fabricated and capable of quite large ratios.
Use an idler pulley on the back of the belt to give the small drive pulleys to give a better contact area.
More can be seen in my album Bandsaw 2.
|Thread: seals for mini lathe tapered roller bearings?|
Cut them from a brass or plastic shim or any thin flat plastic
|Thread: Fixed vertical metal bandsaw?|
Hi Choo Choo
Please take a look at my albums for Bandsaw 1 and Bandsaw 2. One is built from scratch. Two is a conversion from that sad little pile of bits. You will need to reduce the band speed to less than 70 metres a minute. depending on the metal to be cut. Poly Vee belts will give far superior performance over Vee Belts for speed reduction and slow speed running. J section Poly Vee pulley grooves 40 deg tool 2.34 mm pitch. Hope this is of use
|Thread: New Zealand Terror Attack|
My thought are with the friends and families and their loved ones lost and wounded in this senseless violence.
We live in a "Rainbow Nation" here in New Zealand where the ability to teat all as equals and with respect.
Hopefully this is an isolated incident. The next few days-weeks we will be able to relax a little but be more aware of what is happening around us.
|Thread: Cooling oil unit for saw or lathe|
keep posting ideas and projects as I am sure that any posting that give an alternative view on things is often a way to help us modify and improve on our ideas.
|Thread: headstock oil|
Here goes at my approach to a well trampled path on oils and uses. Any oil is better than no oil but no means ideal.
Headstock gearbox 68 Hydraulic Oil will be OK in almost lathes. Chain saw bar oil has all the tackifiers you will ever need to stick it on ways and sliders cheap and cheerful. The "Experts" tell me that it is water soluble yes but I do NOT use my lathe in the rain only my chainsaw.
|Thread: Hemp Oil|
Rather than hijack Rick Charity's post here goes my views.
My good Lady Wife suffers form chronic athritis in both hips and has finding great relief from pain and is more mobile after taking Hemp Oil.
This has extremely low amount of CBD's with no halucenogenic effects or withdrawal symptons.
We are constantly questioned by friends who do not know the differences between Hemp and Cannabis. They are not alone even Richard Nixon the president of the USA did not know the differences.
Hoping to inform and educate from this post and not offend. Sure the Interweb is loaded with loads of opinions true and totally biased on this subject
|Thread: loctite fixing|
The earlier adverts for super glue showed lifting an elephant with two pieces of metal glued together believe it or not.
As yet I have not lifted an elephant but used it in many fixing jobs.
|Thread: WARCO Reversing Problem|
Reading through this posting it appears that the control has most probably got a speed reduction built in to it look for a Pot on the board that reduces speed in reverse.
Normally a DC motor will run at the same speed in either direction OR as my own setup with a KB controller with separate controls for forwards and reverse.
|Thread: Chilled Cast Iron|
To add to Neil's posting "I think some foundry's soak castings for up to two days when there's a requirement for easy machining". The long heat soaking process give us "Semi Steel" used for pipe fittings and valves etc. Also makes arc welding to steel possible.
A little aside on "Chilled Cast Iron" Apprentices at a foundry at Stockton on Tees had not heated the molds for plough shares after a late start due to a heavy night out boozing.
Farmers in the area found that the Chilled Cast Iron lasted much longer and wanted more.
The foundry owners questioned staff and found out about the apprentices escapades and used the process to advantage.
Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!
You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.
Click THIS LINK for full contact details.
For subscription issues please see THIS LINK.