Member postings for Windy

I did some test welds with the welding rods I have the Mig mild steel test I would not trust but have tried Tig 312 and seems to be very strong on a bend test I had the 312 for welding some HT steel a while ago.

A link to what Lincoln say

**LINK**

The welding I'm doing is more for sealing than for a joint under much load.

As an elderly speed nut but as enthusiastic as ever in speed record attempts and the machines created had an interesting conversation with one of my friends.

His two wheeled machine will take pride of place on the I.M.I. stand at NEC fluid power show.

**LINK**

All will be eventually be revealed later but on testing various things were blown away.

I think it's great that there are still people about pushing the limits of speed attempts and building the machines.

Have seen EN36B is ok to weld before heat treatment but have been looking for a suitable Tig or Mig welding rod on the web but can't seem to get a definite rod.

I have mild steel mig wire or tig 309L for dissimilar metals.

Maybe one of the forum members could suggest a suitable welding rod.

Thanks for any useful information.

I bought a new Warco VMC supplied with an ER32 collet chuck with no spanner flats on the chuck.

Using a carbide end mill (a good deal from Ebay) machined some flats on the chuck.

Its tough steel so an HSS cutter probably wont cut.

Accuracy is the same as before cutting the flats. .

In my experiments with the flash steamer have tried steel rings with a little success but found just using cast iron was best.

My rings are Dykes L section the part contacting the cylinder is 0.0625" the depth 0.050" the L section 0.025" it revs to 15,000rpm when not under load.

It lasts about 120 100metre laps before I normally replace it.

You can leave as is with no spring as gas pressure pushes it against the cylinder but I always do put some spring into them.

A great post enjoyed it things have changed since Triumph engines and 4 inch slicks keep at it all the best for 2018

Very interesting has given me ideas.

 

 

Edited By Windy on 25/11/2017 20:58:01

We had them when Guy first started TV programs for the general public its not an Open University program.

Seems Dykes rings were used a lot on two stroke motorcycles but have not found any two strokes of my bore size.

Modern IC top rings have change a lot for modern engines the Dykes are still used in V8 full size Nitro fuelled dragsters but according to what I have read wear can be rapid due by the pressure exerted by gas pressure pushing the Dykes ring against the cylinder.

For my application would only be run for a short time so not too worried by wear.

My model steamer dykes ring 1.214"Ø 0.0625" wide worked well but modern full size compression rings rings are as thin as 0.039" with fancy coatings and some made of steel 9254 apart from the various cast irons.

More I read the more I wonder what to use for home made parts how technology has moved on with materials and engineering.

Have not been on the forum much this year due to health and now feeling armless in more ways than one falling is not good for you as you get older I don't bounce now.

Anyway apart from another 3 weeks before getting back to machine knob twiddling was on final stages of my en24t crankshaft then oops fell 2 weeks ago.

A PEEMS club member kindly picked up a 90mmØ piece of ductile iron for my pistons from M-Machine and another member brought it to my workshop.

I got a price for an 84mm Dykes piston ring today £40.63 I will be making my own now.

I have many articles on making model rings by various model engineers I wonder making an 84mØ Dykes if there is anything I should be careful about when heat treating a large ring using model ring methods?

Will order a blank from Westwood Liners they have centrifugal grey and ductile iron castings.

This will be used for rings and cylinder I saw Allen Millard using a Westwood blank for his replica 347cc 6 cylinder Honda.

Here is a link to his motorcycle creations.

https://www.facebook.com/photo.php?fbid=10209849675861760&set=a.1860389192659.2092180.1328818299&type=3&theatre

The last Top Speed meeting of 2017 at Elvington is on 17th October just hope the fast Lady Becci Ellis 264mph has still air as winds have been a bitch this year and had to abort runs doing 245mph plus due to air disturbances .

A picture of Allens Westwood lump and partly machined liner.

Edited By Windy on 13/10/2017 15:44:34

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As far as beginners just bear in mind the largest group of model engineers seem to be of the elder generation.

Some of their workshops are heaven to behold but many starters to this hobby have old and basic machines.

To some a worn out lathe and maybe a drill is all they have.

I think beginner’s articles should be based on using these basic tools many of the younger enthusiasts don’t have the spare money to spend on milling machines etc. yet.

I think of Professor Chaddock and how he started.

Professor D.H. Chaddock, C.B.E., M.Sc. Eng, F.I.Mech.E. (July 28, 1908—September 18, 1992) was considerably more than a simple model engineer. Given a treadle driven lathe in 1922 for his 14th birthday, he set about constructing a model IC engine using material at hand and castings made in the kitchen coal-fired stove. The engine may have been fitful and uncertain in operation, but it did run, establishing a life-long passion for things mechanical and their design and construction.

Did a bit more on the crankshaft halves finish web tomorrow then to screw cut and machine drive taper

I would like to know has anyone fitted a locating pin or dowel to locate vertical and horizontal position to save on tramming

Ian S C you've got me going about my favorite subject I always wanted to ride at Bonny in the 1970's.

Here is a link to Ack Ack and Bolivia etc.

**LINK**

The VMC mill the head moved in the vertical and horizontal plane have just checked with DTI.

So easy to overdo things on bigger machining items I need a slap on the wrist to keep within the mills limitations.

I know this has been repeated numerous times but wear safety specs so easy to be a casualty. 

Edited By Windy on 21/09/2017 14:00:11

We were certainly Blowing the wind when the steamer ran there is blast of hot air etc. at speed watching the plants bending behind the hydro

Edited By Windy on 20/09/2017 10:55:40

Edited By Windy on 20/09/2017 10:58:33