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Member postings for Ian Parkin

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

Thread: Motorcycle General Discussion
29/11/2020 11:27:04


I fully understand that people can undersell to a young chap

but if 10 shillings is £10

then £100 is £2000

my first bike was £90 in 1975 and it was 70% of its new price and 5 years old

29/11/2020 11:03:11

I was sent a link to a publication I’ve never seen before “vintage motorcycle news”

and the current issue is all about ner-a-cars

and theres 2 pictures of my bike in it

heres a link

29/11/2020 10:01:07

Steve great story telling as usual

but even in those days would someone have sold a 4 year old motorcycle that cost £100 perhaps for £0.50. ?

Thread: Thread cutting problem
28/11/2020 16:41:36

Has your tail stock holder got a big enough clearance hole after the die?

Thread: Electric motors for cars
28/11/2020 12:49:19

What sort of motors are used for retro fitting into cars?

i was watching a programme about a company converting a variety of classic cars into electric powered

the motors they were fitting were so small

i’m used in the day job to motors that i can lift being up to 5kw or so

but a 25 kw motor is fork lift territory

so what sort of a motor generates 65kw that you can almost fit into your pocket?

then the end plate is B plate and has 4 m8 bolts to hold it on

by the look of the motors they are 3 phase


this is a link to a motor


anyone any experience with them?

Edited By Ian Parkin on 28/11/2020 12:50:31

Thread: "restoring" a Colchester student, anything to consider?
26/11/2020 10:33:26

Actually i think i can see the c spanner in the tray

Thread: Tig Welder
26/11/2020 10:27:50


or anyone else who buys a digital machine by rtech

theres a slight glitch where if you are using the memory locations set up for your different materials/jobs

when you save a set of parameters that’s then the default on start up

so if location 2 is thin alloy on ac

and the last location you saved ( no 6 say) is dc thick steel

when you turn on it will go to is no 6

so if you doing a job on your thin alloy and switch off for a tea break when you switch back on all your settings are wrong.

Spoke to rtech and they confirmed that this is how they work defaulting to the last saved location.
So i set up no 9 with a really long pre flow and saved that
So as long as i remember to always save no 9 again after setting up another number and saving it
When the welder is turned on it goes to no 9 which hopefully will alert me when the arc doesn’t start.

hope this helps

Thread: "restoring" a Colchester student, anything to consider?
26/11/2020 09:08:49

It doesn’t look like it may have died in service and no dismantling has taken place that you can see

as David says get as much extra parts with it

the chuck c spanner for one

it looks an easy restoration

i had an earlier mk1 ( with cast levers on the gearbox) for many years which served me well before i upgraded to a mk1.5

Thread: Tig Welder
20/11/2020 12:41:01


the book says 60% at 170 amps for tig

mma output is 35% at 125 amps

20/11/2020 12:08:42


102.jpegWell tried again .....made a jig to hold my alloy at 90 degrees to each other fastened the earth clamp to the jig quick wire brush with a SS brush and success

Well for me I’m pleased with the result


Edited By Ian Parkin on 20/11/2020 12:11:36

20/11/2020 10:49:50


20/11/2020 10:47:42

Ive had a dc esab tig welder for some time and i can do an acceptable weld on MS and stainless

but a few weeks ago bought a rtech welder as championed by doubleboost on YT

what a steep learning curve alloy is

I’ve used up a full 9 litre of argon and still not got acceptable welds

i can run beads all day long and they look great

i can butt weld now in 0.9mm up to 3mm thick

but outside and inside fillets no way yet

i’ve just gone and got a big argon bottle ...much cheaper gas cost..

19/11/2020 09:42:27


do you do much aluminium welding with that welder?


Thread: Amperage Differences - Star vs Delta
14/11/2020 12:24:41

Its a 2 pole motor if its running at 2800 rpm

perhaps the motor will pull about 2 amps on 240v wired in delta/mesh

increase your vid current to suit

Thread: How can a steel thermos drinks flask fail?
09/11/2020 11:05:54

I have a Sigg 500ml hot and cold bottle stainless steel

if i make it up with tea at 5.30 am its still too hot at 12 noon to drink...just sip.

and cleaning it out at say 7pm the dregs are still warm

Thread: Rack, pinion and gears.
06/11/2020 10:28:36


just to confirm

do you want 9mm advance for 6 revolutions? Or 9mm advance per 1 revolution?

Thread: Taper sleeve adapter
05/11/2020 16:03:08

I would start by making a dummy male internal taper that can be mounted in your lathe? Concentrically

then cut your internal taper to fit that. Mount the adapter on the dummy taper and cut the external taper

Thread: Anyone with a Chester 626 mill can help me with a little problem?
01/11/2020 11:56:25

This what you need

good old arc

01/11/2020 11:53:13

094989fd-f3db-40c4-9d59-ddd4e07fe06c.jpegThis what you will have up your spindle


Edited By Ian Parkin on 01/11/2020 11:53:37

01/11/2020 11:16:47

I don’t know about your mill but many don’t have the slot to remove taper tooling if its to be held in with a drawbar.

the adapter wont have a tang on it just an hole in the top to pass the drawbar through

you may be able to twist the adapter out if you cobble up a tool to hold the spindle and use a long spanner on the adapter flats

or you may get lucky with a rod down the drawbar hole catching on the top of the adapter to loosen it

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