By continuing to use this site, you agree to our use of cookies. Find out more

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: Pulley design
18/02/2021 00:42:57

`Hi Martin

Yes washing machines, motor cars, and almost all modern machines use Poly Bee Belts

17/02/2021 19:30:11

Hi Martin

Have you considered using "Poly Vee Belts" for much better performance than "Vee Belts" as an alternative. Much easier to fabricate with the ability to use much smaller driver pulleys. Classic example is Wood working hand held power planers.


P.S. Poly Vee Belt Drive lives at my house

Thread: Coffee machine project
03/02/2021 17:31:15


What a rigmarole to have a machine to make "Instant Coffee".

Add a plumbers nightmare to fix a problem that we never had when we put the dehydrated coffee in cup with and added freshly boiled water not boiling water.


Thread: 3 HP Frisco Standard Stationary Single 4-Stroke IC Engine
30/01/2021 09:13:17

Hi Pat hope this helps

"My problem is that the helical gears at the camshaft-crankshaft junction appear to be the same size, both in photos and on the patent drawings.

So my question is, how do I get a 2:1 gear ratio using cross helical gears that are the same size?"

Roderick's Photo explains it the driver gear on the right has 8 teeth the driven gear on the left has 16 teeth.


Thread: FREE PLAN: A Clutch for the ML7 Lathe
21/01/2021 06:01:44


Oldiron's video is on the right track for a clutch. An Idler wheel on the back of the belt with an over centre eccentric to engage the drive. A peg or an idler on the front of the belt that just clears the belt when the clutch engages.

This will stop the belt from flapping and jerking. This method has been used on various engine and electric driven machines I have built over over a number of years.

Get rid of the linked belt and use Poly Vee Belt and Pulleys or regular Vee Belt in its place.


Thread: The demise of UK fossil fuel Power Stations
19/01/2021 18:19:08


you have just shot yourself in the foot

Fossil Fuels

Can someone explain How 7,000,000 tonnes of wood pellets get to Drax power station and not using fossil fuels. ...

"" They don't at the moment because most ships and land transport systems are diesel""

Do you realy know about what you post.


19/01/2021 09:45:53

Read this article on BBC News a few months ago and found it hard to understand the reason for it.

Fossil Fuels

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 :
17/01/2021 16:19:18

Old Iron """Karen""" finds your comment Offensive

Thread: Taper-Lock Bushes - tolerances
29/12/2020 17:18:41

Hi Simon

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
29/12/2020 00:12:28

Hi Robert please sit down first

Always alifelong intrest in Velocette I googled for KSS the bike in the photo

1937 KSS 1934 KSS

First 'Road Legal' bike I owned was a 1933 KSS

anoldvelo Eric




Edited By oldvelo on 29/12/2020 00:14:26

28/12/2020 20:13:48

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
23/12/2020 18:34:52


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.
10/12/2020 19:03:23

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
18/11/2020 00:00:35

Good luck trying to put 1/2 inch U.N.C. nut on whitworth and vice versa

Thread: Rubber mat.
03/11/2020 03:52:16

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
02/11/2020 06:39:25

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.

01/11/2020 21:23:12

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.

01/11/2020 05:59:56

Cup point set screws with a ball bearing <o> . Tighten all Grub screws remove one dress up the dimple in the jib with an egg beater hand drilll. Repeat on all screws then dismantle and clean up. Reassemble with the ball bearing in first sitting on the jib. Adjust to suit.


Edited By oldvelo on 01/11/2020 06:00:37

Edited By oldvelo on 01/11/2020 06:01:50

Thread: Which ball turner?
29/10/2020 19:52:45

Hi Clive

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

Ball Turner Boring Bar

This is the MEW Boring Bar set up as a Ball Turner. Has turned out a lot of stainless knobs to replace plastic ones.


29/10/2020 09:32:46

Hi Jim

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.


Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Latest Forum Posts
Support Our Partners
Eccentric July 5 2018
JD Metals
rapid Direct
Eccentric Engineering
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

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.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest