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: The demise of UK fossil fuel Power Stations|
Read this article on BBC News a few months ago and found it hard to understand the reason for it.
Can someone explain How 7,000,000 tonnes of wood pellets get to Drax power station and not using fossil fuels. The trees cut down in America and to be pelletised no doubt they used products from the Oil Industry which suprise suprise is a Fossil Fuel. The transport accross America then the Atlantic. Put on rail to Sheffield all Fossil Free?? All paid for by the consumers. All done with No damage to the environment where the trees are harvested from complete with a regeneration program in place maybe???
|Thread: I wonder what the Aviation Authority thinks of this :|
Old Iron """Karen""" finds your comment Offensive
|Thread: Taper-Lock Bushes - tolerances|
One method used when assembling 'Taper Lock Bushes' is insert a 'Fox Wedge' or a flat blade screwdriver in the slot of the bush to open up the diameter slightly.
Then fit it into the pulley-flywheel with the retaining screws done up finger tight only to keep it secured the it will slide easily on the lightly greased shaft. NO grease on the tapers or retaining screws.
|Thread: Velocette MAC|
Hi Robert please sit down first
Always alifelong intrest in Velocette I googled for KSS the bike in the photo
First 'Road Legal' bike I owned was a 1933 KSS
Edited By oldvelo on 29/12/2020 00:14:26
Hi A Velocette fan from way back I spotted this hybrid one parked. The owner had fitted an overbored to 499cc KSS motor into a MSS frame.
|Thread: Calor gas butane workshop radiant heater|
Running a gas flame heater in a small workshop producing carbon monoxide is not good for your health or for that matter your survival.
New Zealand Ministry Of Health Bulletin Gas Heater Warning
Stay Safe Take Care Kia Kaha
|Thread: Message from ARC to our customers in the E.U.|
It was not broke I did not need to fix it. Now I wanted to break it so now we all need to work to fix it.
|Thread: Whitworth v UNC|
Good luck trying to put 1/2 inch U.N.C. nut on whitworth and vice versa
|Thread: Rubber mat.|
Concrete floor covered with sponge rubber matting with 12 mm painted chip board on top has a slight spring when walking on it. quick clean up with a brush any spills mop up off the painted surface.
|Thread: Gib Screw Locking Methods|
I guess the point I made was not explained properly that I use good old fashioned "L" shape Allen Keys to adjust gibs and the Ring end of a ring open end spanner on the lock nut. No excess torsion spring forces required.
Simple solution to the play of an allen key in a socket head screw is to exert pressure toward the screw at a right angle to the rotatation then do up the lock nut.
Cup point set screws with a ball bearing <o>
Edited By oldvelo on 01/11/2020 06:00:37
Edited By oldvelo on 01/11/2020 06:01:50
|Thread: Which ball turner?|
I can now see how a smaller lathe with a boring head fo a ball turner is a bit of shoe horn job.
A round piece of tool steel does a good job and cuts left and right
This is the MEW Boring Bar set up as a Ball Turner. Has turned out a lot of stainless knobs to replace plastic ones.
Boring Bar head on a bushed shaft mounted horizontaly on the toolpost with a round nose high speed tool steel with the cutting edge on the vertical centre line will work fine and will cut on the right or left swing.
Use the tool upside down with the flat side facing downwards.
A 400 mm lever on the piviot shaft will give good control and finish with minimum effort.
|Thread: Putting some grip (stippling) on an aluminium drive pulley.|
Poly Vee Belt 2 Ribs "j" 4.64 mm wide will do the job.
Pulleys in aluminium are easy to fabricate with a high speed steel tool ground to 40 degrees.
|Thread: Moore & Wright Automatic Centre Punch|
If you overtighten the adjustment the punch will not cock it properly and will not work.
|Thread: Axminster SX2|
Disconnect the leads from the motor and connect a 230 volt Light bulb to the control box motor leads.
Turn the speed control to the lowest speed then power up the control and turn up the speed control the light should get brighter. The control is O.K. if the light gets bright.
A 12 volt car battery will test the motor to run it allbeit slowly. If their is a short circuit in the motor the leads will get very hot super quick. Best done outside and away from flamables.
|Thread: Grumpy old men|
When someone posts a question on MEW and I answer with how something actualy works and go into some details to explain it.
Then they repost my explanation in full then tell me it does not work like that at all. That they have a Theory of the way that they Assume it works is correct and is the only way to solve the problem.
The ones who drift off to post on something that maybe remote and possibly connected the subject being discussed on the forum
|Thread: SX2P Gas Strut Modification Issue?|
Lets put all contradicting assumptions to one side they are the basis for misunderstanding and cause for many major disasters.
The plan in mind is to deal in facts only and avert such happenings.
The 5 mm 10 mm backlash that you demonstrate in the video is explained in my posting 1) to 5) Which is easily moved by light finger pressure this also allows a cutter that has not had the excessive lead backed off to drag the head down when machining Cast Iron, Bronze, or Brass.
The Worm Wheel does actually turn slightly as the clearances are taken up in this order 1) 5) 4) 3) 2) with a single start worm it is normaly self sustaining.
Perhaps the answer "using gravity to advantge" would be to add a 5kg-8kg weight to the cutting head to take out all the backlash when the head is being lowered and remove the weight when you need to raise the head.
"As it stands, it’s just wrong to have the head forced up by default. It must be detrimental to accurate work - if you have a hand feed lever, you intuitively assume it’s limiting the tool position downwards. Currently, it’s basically moving the tool to its highest limit - all bets are off in terms of where it could end up in the workpiece".
"intuitively assume" are not terms consistent with precission engineering. To hold the head from being pulled into the job and elliminate the effect of the backlash is with a higher spring pressure to have the head held firmly UP at all times.
1 ) Backlash in an X2 is the clearance in the Rack and Pinion
2 ) The clearance in the Worm and Worm Wheel
3 ) End float on the worm to housing
4 ) Clearance on the Teeth on the Dog Clutch
5 ) Clearance on the Key and Keyway on the Pinion Shaft in The Dog Clutch
6 ) Two Universal Joints on the Worm Shaft Drive
All adds up to an excessive ammount of backlash. Around 3/4 of a full turn on my reasonably adjusted machine.
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