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

Member postings for fizzy

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

Thread: Boiler bush threads
12/12/2020 21:17:43

just to add....if im doing a decent sized loco boiler the bushes are 90% drilled, soldered in and drilled and tapped cold. The amount of heat that goes into a 5" gauge boiler is unreal and controlling it is difficult. On the small stuff which I do most (3.5inch dia to 6inch dia) I have cnc bronze bushes made. Sometimes silver solder will creep up and over the face and into the threads but chasing them out is easy enough.

Thread: Free inserts.
12/12/2020 14:25:27

and me please...i just did the same and got the wrong size, if we swapped we would both be happy!

Thread: Boiler bush threads
12/12/2020 12:21:56

You can use fully formed bronze bushes without issue - I use hundreds and have yet to have one fail. If you were to use brass then there is a high chance that the whole bush will melt and the threads dont like the heat regardless so dont go there.

Thread: Steam pump
11/11/2020 07:52:07

Why has the d valve in the photo got two ports per stroke - not seen that before?

Thread: Harrison L5 Apron/carriage adjust
01/11/2020 20:53:47

If I put a jack under the apron there is about 30 thou lift.....that would make for some serious scraping! Plus getting the thing off would require hard lifting and thats a no no these days. For most jobs gravity acting on the raised part of the bed ensures nothing moves, but with big cuts whilst boring it can get the jitters. Reckon I will adapt the existing under-plate with the 3 bolts to suit. Perhaps mill a slot along its length, add a few tapped holes and make Gib strips?

Thread: Yahoo Groups ... The End is [eventually] Nigh
27/10/2020 10:37:36

There goes another wealth of information, what a sad day

Thread: Cordless tool electronics
27/10/2020 10:35:30

These batteries are Very sensative to over disscharge - then they are permanently damaged (I use lots with my rc stuff). A typical so called 20V call is 5S. Full charge is 21V, Critical disscharge is 18.5V which is just 10% full capacity, the electronics are there to ensure you dont go below 18.5V

Thread: Experiences with cordless drills
21/10/2020 21:19:39

I have 2 Worx 20v max drills used every day with 4 x 4ah batteries. They last a very long time between charges - machines are a bit clunky but save lots of time in the workshop. One drills 2.5mm holes, the other taps m3 to secure burners to our boilers.

Thread: "Invicta"- Photos wanted
19/10/2020 21:11:28

Not terrably helpful but I did a 71/4 version based on the 3.5 drawings...ish. Biggest issue is raising enough steam due the confines of the boiler, limited as it is by being between the side frames.

Thread: Harrison L5 Apron/carriage adjust
19/10/2020 21:07:54

Mine is the same as yours Chris.....going to be a tight pain as I use it every day for work

19/10/2020 16:24:25

sorry- zz movement, up and down

19/10/2020 16:23:37

I have a bit of play between carriage and bed on the far side. There are 3 bolts holding a plate to stop yy movement but no way to adjust it. Anyone know what im missing?

Thread: In flight social distancing
16/10/2020 21:30:00

the 99% claim relating to things like filters and detergents arrises from the fact that we dont yet have technology to substanciate a claim of 100%.....learned that on the BRC auditor course!

Thread: Piston Valve design - new one on me
30/09/2020 19:13:14

I just bought a poorly vertical steam engine with a piston valve where the exhaust from the bottom of the cylinder moves through the centre of the valve and exits out the top face of the casting. Ive never seen this before and the tiny holes in the piston must be very restrictive to steam flow. Is it a decent design or should I replace it with a D valve? Anyone else got one?

Thread: Model identification
09/09/2020 11:07:23

Agree with Jason - small working engine, used to power all sorts from dynamos to sewing machines. You wont find drawings specifically for that item but making your own is very simple. Im on the lookouf for a project like that so if you decide to move it on please let me know.

Thread: Silver soldering a Minnie traction engine boiler
31/08/2020 20:11:06

Now thats a massive improvment, well done indeed. I almost deleted my words as I thought they would be taken the wrong way but im glad they werent.....the way the solder has run on the inside is a sure indicator that it was at the correct temperature and all should be good.

31/08/2020 10:29:16

Mark, well done but some words of caution from someone who does this for a living.The solder hasnt flowed correctly on some of the tube joints, possibley burned out flux or more likely just not enough heat, also the top rivet looks like it hasnt been soldered (might just be the light). Before proceeding with the build I strongly advise you to re-flux the tubes and re-heat until it all flows smoothly. If you have even the slightest problem in this area it is near impossible to correct once fully assembled and soldered and then the whole boiler is scrap. Any lumpy bits of solder indicate potential problems. Picture two shows two perfect joints and two not perfect joints, they all need to look like the smooth ones or they are likely to leak.

To answer Bob, you cannot easily compare the process of arc welding to soldering. One relies on a filler metal finding its way into a gap by capiliary action (dont get me started on gaps!) and the other deposits liquid metal onto the surface, gap or no gap. In reality a boiler constructed entirely without any flanging and competently silver soldered would be just as strong as a similatly welded boiler. Flanging originated in the days when boilers were riveted together and then cailked with soft solder plus its difficult to hold a boiler together without any flanging but it has been tried and done by the Australian federation whilst they were investigating this very notion. All their joints passed.

Thread: Excellent Service
22/08/2020 20:56:09

Most decent hotels in Germany give out comp Haribo......why?

Thread: Who trains these ideots?
19/08/2020 16:07:18

so several people called to quote....I just want it replacing with a similar one.....why cant anyone understand this simple concept......I dont want to change to a combi, I dont want to replace my 12kw item with a whopping 40kw item....i'm seriously thinking of retraining because if everyone elses experience is like mine there must be one heck of a market for it!

18/08/2020 11:46:26

One man band but with 20 years experience.......obviously not with boilers!

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

Support Our Partners
Eccentric July 5 2018
walker midge
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