Here is a list of all the postings Old School has made in our forums. Click on a thread name to jump to the thread.
Thread: Nalon Viper |
18/12/2019 18:12:00 |
Have a read of this it's very interesting approach to the problem of bearings in aluminium crankcases. I have built a 10cc tether car engine designed Mats Bohlin using the front end as described in the article it requires great accuracy to make it work. Its interesting at the time Mats built this engine Picco was also racing, his engine was conventional design pressed in bearings in aluminium crankcase, Picco set the World record for a 10cc tether car at a fraction under 345kph Mats engine was 0.1kph slower. http://bmpra.bmfa.org/wp-content/uploads/2016/12/FMV-Engine-history.pdf |
18/12/2019 17:56:34 |
Johm Feeny I cannot say I have seen a modern engine like that who made them would like to have a look. My interest is going fast so anything new is of interest.
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18/12/2019 17:50:40 |
It's one way of doing it but not would not be my choice. Just make the crankshaft 10 thou longer and then you can clamp up the rear part of the crank against the centre of the front bearing .The the expansion of the front housing is taken up by the crankshaft moving in rear bearing. The front bearing can be held in with a circlip but I have found it uneccesary, I have clamped the front bearing in one engine I modified but used a clamp ring ring with a left hand thread so if the bearing did rotate it tightened up the ring. The easiest solution is to make the front housing out of steel as is current practice in modern tether car engines press fit bearings C3 or 4 tolerance and the expansion problems almost disappear. |
Thread: New I/C diesel project - ETA15d-x2 |
27/11/2019 08:47:11 |
John I believe that the original ETA drawings are on the internet somewhere an ask on the Barton club website might help with location. |
Thread: 3D printer recommendations |
23/11/2019 08:05:14 |
I use the Balco one from Aldi worked straight out of box came with a SD card full of things to make, also Cura software. Like a lot of the others I use Fusion 360 to do the drawings very much at start of 3D drawing but getting better, the printer gets used to prove drawings before I start cutting metal on the cnc mill. |
Thread: Are these clock related please |
22/11/2019 12:51:12 |
The items in the left hand box are cutters for countersinking pivot holes in clock plates for the oil. The loose items at the front are clock making tools. I don't know what the item on top of the box to the right is. |
Thread: HSS tool sharpening |
19/11/2019 13:49:49 |
The the wheels on the grinder will be fine for HSS, the coarse one for roughing to shape and the fine one for finishing. |
Thread: Sourcing an elusive Rubber-Ring! |
02/11/2019 07:24:39 |
You can make them by trepanning them out of rubber sheet. |
Thread: Does anyone know what this two cylinder locomotive is? |
31/10/2019 15:28:52 |
I don't know but it does look interesting. |
Thread: Fly Tying Vice |
27/10/2019 20:00:24 |
A good looking vice you have made. Vices have come on a long way since my flying days. |
Thread: MIDLANDS MODEL ENGINEERING EXHIBITION |
21/10/2019 17:01:59 |
I worked for one of the big UK and European plastic pipe manufactures when I first started we did all the shows and each division had a stand but over the years they dwindled one stand for all the UK divisions. We I retired they didn't do the shows would support our distributors and the rest of the marketing was internet based. |
21/10/2019 15:23:14 |
Jon I would like to and my fellow enthusiasts but our request for a club stand was declined, never told us why. |
Thread: Is Model Engineering in Decline |
19/10/2019 09:22:51 |
I can remember the heyday of model engineering shows, being dragged round by my father looking at the clocks and him muttering to himself built by an engineer. We did persuade him to look at the exciting stuff the model aircraft and the model boats. I have never really been a fan of steam loco,s they are nice a huge amount of skill in building one. To me one of the more interesting and very nicely made exhibits fp was the Gatling gun not to everyone taste but a demonstration of the gunsmiths skill. I have no idea what the youngsters of today want to see my son has a model engineering workshop he produces parts for his tethered cars and his full size drag racing mini. The shows are certainly in decline but it's not just the ME shows some are killed by the admission price, but not the MEX. Just for the record I do have one complete 3 1/2 loco but only really as a dust collector although does have its all the required paper work run. And I rescued a gauge 1 Girton that I am completing made by an Scosman in Switzerland and rescued from going into a Swiss dustbin. They have an absolutely fabulous gauge one in Witterswill I Switzerland and the guys there say it's in decline, the tether car track next door the reason for me being there is holding its own having a good mixture of ages. |
Thread: MIDLANDS MODEL ENGINEERING EXHIBITION |
19/10/2019 09:01:50 |
I went this year and it's probably my last, I bought nothing but food and a drink. I did try to get a club stand a few years ago but it was declined by the organisers no reason given. The stand was for tether cars they are scale, semi scale and out right race cars most built in model engineering type workshops. Not sure I will try again it's a big commitment in time and money. |
Thread: Free software and human nature |
13/10/2019 08:23:06 |
I used to write a coloumn every month for a website did it for years, use to ask what do think would like more information etc. I could count the responses on one hand. The only people who really appreciated it where the couple who ran the site, I was told by them how well it was received a few people also told me how much they liked it. Over the last year or so I have slowly wound it down no one has asked why or they are going to miss it. So I am not going to bother anymore unless I feel like writing something. |
Thread: Morning from the Midlands |
11/10/2019 21:57:35 |
Evening from the East Midlands Edited By Old School on 11/10/2019 21:58:21 |
Thread: MIDLANDS MODEL ENGINEERING EXHIBITION |
08/10/2019 09:51:44 |
This year it was hard decision whether to go or not, its been slowly going down hill over the last twenty years that I have been going. The only thing that swung it this year I get an OAP ticket. |
Thread: Live steam models Burrell Metric or Imperial Drawings |
06/10/2019 21:41:42 |
Build the one you feel most comfortable be it imperial or metric, I doubt most people will be able to tell which it is when it's done you are more likely having people admiring the work you have done building the engine. Take no notice of the rivet counters. |
Thread: Oiling an old clock |
06/10/2019 11:31:36 |
A bodge used in the antique trade immerse and wash the movement in petrol dry oil with clock oil. |
Thread: UK stepper motor supplier |
06/10/2019 11:28:21 |
CNC4you are at the Midlands ME show in a week or so might be worth a chat with them if you are going. I am going to talk to the about a rotary table project. |
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