Making model I.C. engine valves. Silver soldered fabrication

[AsiAzzy]

Are into forging as well? Because valves supposed to be one continuous fiber made from forging (for high loads on a real engine, I guess brazing holds for model engines).

Anyway, are you fond of blacksmithing?

[TosonDrums]

why cant this guy be my next door neighbor?

[572334]

My friend just found you. Great parctical work and good results. As I am about to embark on my first modelling adventure your videos will be logged in my favorites for reference.

One question? The valve was made in two pieces to save machining, but have you had them separate, the valve head from the stem? regards

[myfordboy]

@572334 I have had no problems with the parts seperating in use. It would probably be better to make a one peice valve if it were a high performance engine though.

[chevyvictor]

5:31 why did you use a DTI in a 3jaw? lol

[myfordboy]

@chevyvictor My 3 jaw is not that accurate. Tightening it with a different position gives different results.

[zapwatt]

Sir, I have been a fan for some time now and always enjoy your videos. I have a question for you: why did I see you use the knee instead of the quill when you were pecking?

[myfordboy]

@zapwatt My mill does not have a quill.It is a fixed head. The lever on the side is not a down feed but the speed control.

[buckcreekman1]

Thanks for a great video,Its the way I am going to make my valves in the future ,Thanks a lot!!!!!

[titankron]

Hi there; thanks a lot for your excellent instructional videos! I wondered about the cross-drilled hole - you didn't seem to make any attempt to make sure the piece was parallel to the mill, making the hole out of square. Is it just my eyes, or is the holding pin's squareness to the work not an issue?

Also, regarding the use of a detergent as a wetting agent in the solder flux; I believe that its job is to make the flux easier to mix with water, and not adherence to the metal.

[myfordboy]

@titankron Thanks for the comment. The work is held in the vice which has been set parallel to the X axis. There is a V groove in the vice to ensure the work is parallel to the table. Hole is perfectly square and central .

[erfut]

Great Video Man, Thanks for the tips. :-).

[gremlin60]

really nice work you're doing... wish i had the machines you got.. !

[mikruson]

perfect work!

How do you remove melted flux?

[myfordboy]

@mikruson This tenacity flux can be mostly scrached off with a knife. Most of it on this job gets machined away. I have some sulphuric acid for removing easyflow 2 flux.

[clkbateman]

who needs TV when we got you myfordboy !

[MrPumba85]

Как всегда великолепен!

[dogdove]

could you perhaps make a video on how to properly sharpen a drill bit? It would be much appreciated.

[myfordboy]

@dogdove Truth is, I never sharpen the workshop ones. The worn ones get used for jobs around the house or get thrown away.

[kenndogg51]

@dogdove I've been a machinist since 1996 and the proper way to sharpen a drill bit is by a conrolled mechanical action. i.e. a machine designed to do it. You can sharpen drill bits by hand on a bench grinder or belt sander with satisfactory results afer much practice but they are never as efficient and tend to dull faster. practice.

[gwheyduke]

@dogdove I know this sounds like some sort of ad, but honestly I bought one of those "Drill Doctor" drill sharpeners at Lowes on a whim about a year ago. It really does work for drills from about 1/16 up to a 1/2 inch.

There is a bit of skill (not much) in using it, I have taken my 1/4" bits that I break or wear out and sharpened them, and gone right to drillilng mild steel.

[valic000]

Thanks for explaining.You have a lot of very interesting videos.I see them moore than once..Thanks for your help for a lot peopel..

Kind regards Peter,Netherlands

[sanches2]

really great! thanks for the upload!

[valic000]

Thanks for reply my coment.I see,its a low rpm running engine,so it wil hold. I notice,you put a drop of washing liquid in the flux mix.What is the reason behind it?.It makes the PH lower,so maeby it flows better? Big compliment on al your work. I wil also try ones a smal casting. I need a smal Model diesel crank case.I like to try to make my first IC engine. Specialy the web strengthing in the crankcase is almost imposibel to doe from bar stock..Casting is the only way..

Kind regards Peter

[myfordboy]

@valic000 The washing up liquid is a wetting agent. The flux will adhere to the metal better.

[valic000]

Nice job.Ofcourse a model diesel engine has a low rpm and as diesels get not really hot,it wil hold,sure about that. But in therms of model diesels, I collect also them,have moore than 100,the oldest is 1947,but there run of a mix of petroleum,castor oil and aether.

Do you run this engine also on this mix? Or is it a real diesel with a pomp and injector?

Regards peter

[myfordboy]

@valic000 This is not for a diesel. Its a petrol hit and miss although I run on butane gas. I have simular engines shown in my other videos. The only do about 400rpm. They do not run hot you can easily hold the hot engine with your hands. I don't even bother to put water in the water cooled ones.

[tsukubadiver]

Cathartic. Beautiful. Can't do it myself so such a pleasure to watch you do it (and not talk about doing it) while I can listen to the music of the machines. Thank you.

[tsukubadiver]

Cathartic. Beautiful. Can't do it myself so such a pleasure to watch you do it (and not talk about doing it) while I can listen to the music of the machines. Thank you.

[barumman]

Another good video, Super Duper.

[dedasdude]

i see you are using your hack saw machine!

[catman72]

beautiful !!!

[homesteadprepper]

Great job! Thanks for sharing.

[staccio80]

good good work!!!

[FireDropTechnologies]

It is a nicely done peice of work,

But as I asked, Would it hold up?

or is this mostly a display peice

prosses?

[HomeDistiller]

@FireDropTechnologies i wouldnt think so this look like an inlet valve for a hit'n'miss engine so it shouldnt get to many hard hits and silver solder has a very high melting point. also if both pieces of steel were stainless they should expand at about the same rate

[FireDropTechnologies]

@HomeDistiller

Thank's makes sence and awnsers my question.

[FireDropTechnologies]

To me it seams the solder would bang loose when the valve heats up and expands against the valve seat, pulling the stem from the face, I should think?

[FireDropTechnologies]

Why not just Weld and temper the valve, with OXY ACETY torch?

[donbenham1]

Beauty!

[huerdon]

Thank you - encore!

[MikesFitnessGoals]

Brilliant!

[Films4You]

Excellent techniques and outcome.

[killerman4ever]

Amazing work.