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I YHINK I’d make separate sleeve or fitting cylinder. You can get brush hones so smooth walls should no byoonhard other than a lot of them the at shops with honing equipment tat would make this a perfection job adaptin a Sunnen hone tool to latheor mill be a oughnproect. Maybe a power...

I can’t give you the detailed tests but being long time drag race in fuelgas nd alcohol ranks. Today most pistons are forged and get heattreated 7075 usually coated with a lolive drab colored coating much like ore seen in industrial hard anodizing it is generally very hard early pistons som...

Very nice, I’m envious I have a whole tray of tiny metric screws to install I have a more or less standard handle but it’s shaky at best . My med thing leaves me with lest than steady hand. I have a metric tap and drill guide but it’s gone hiding on me.

Wen stuff like this happens on hot rods we go bak to basics. Find top dead center install degree wheel . Locate where you pointer indicator should be then set degree wheel to either timing desired or 0 . Rotate motor to about 10 deg advance ( or backwards ( it now has to rotate toward TDC)...

Use a degree wheel for more accuracy. The magnetic field is kinda elliptical so where it’s greatest attraction is where the system fires for most sensors it’s pretty small especially on small engines if you mount a degree wheel and pointer you should be able to get the spot you want lined up...

Nicasil spelling? Is an anti wear surface on cylinder walls . It’s hard as can get rarelybeears unless badly mis treated. Usually small engines especially two strokes . There are few failures weed eaters last for ever as do chain saws it’s also used on four strokes. Sayportsble generators I...

Haha I was just ready yo say the same thing. He would spend more on tools just to make new seats and valves for a questionable fix. I have a perfectly good self propelled more I’ll gladly give to anyone that wants it. It’s a one pull starter and cuts grass has a good belt a good drive wheels ...

I agree model engines have huge engineering backing so many issues are solved before they are even prototyped. Nicasil cylinders are a big one modelers can’t beat this on garden engines last for ever given even minimal service. I’ve at lest 100 hours full throttle on one of my-war bird...

Thanks I’ll try that tip. I’m gettingvreadyvtonrelocatvtobtenn. Due to better med care and be with family more. They may be able to provide a “ get going “ atmosphere so I can get over this fatigue issue. I’m packing steamer and turbines for the move. I will still have a hobby room. And I...

I have a threaded blocker that is micro adjustable that I can accurately measure the piston TDC and BDC Then I can measure the exact eccentric position . I managed to get one engine to run on pretty low air pressure , about 30 psi. Steam having more expansion ability could cause this to...

I would think that TIG welding would be common there stainless TIG welds nice if you back purge. Before you embark on bolted or rivited assembly you may want to get a book called Roarks dress and strain . I has lots of information on bolted riveted connections as might be used in a boiler...

If you want a challenge, something I’ve wanted to do for a long time. Two stroke or even 4 stroke Rc model engines are not too expensive. I’ve wanted a two stroke in line Rc model engine not many are available. You could get two then design a new crankshaft and crank case adaptor and connect...

The major thing I’ve noticed since I became the old guy in the family is physical condition. I played sports from about seventh grade to my final baseball game at 72. You don’t have to do punishing gym stuff. Just a walk. It doesn’t have to be miles just comfortable. Try to eat at least...

Along with bearings and oil supply , on Hogson radials he uses a nic gear ump. We use similar one on the big hemi. Should you decide to go with 4 7 cyl I’d use the same idea but you can buy gear stock rod fro PM MANUFACTURING So you could easily make longer gears thus higher capacity . We use...

The old rusty ford reminds me of my former boss. He still has a mid to late 70’s 3/4 ton 4wheel drive truck with snow plow. I don’t think it’s ever been washed . Being a minnesota truck there is plenty of salt on the roads in winter plus he regularly salts his steep driveway the bed floor is...

I was going to suggest making your own bearings . Personally I stay away from the exotic stuff. Bearing bronze is easy to machine and more than strong enough. Our big supercharged hemi race engine use stock bearings locked just s small kinked area an a 3/26” bronze pin sticking up about 1/16”...

Hi again glad you are a “ youngster with drive. I did a little more research on scroll blowers. If you look it up directly you should find the video of some model experiments the guy used a small leaf blower to work with . It was surprising how much pressure and velocity he could get he also...

I blew out a knee trading big K 9 dogs years ago I’ve asked about fixing it but the doc says leave it the tendons and muscles are all wrecked too. He was amazed that I continued to play sports most of my life. I have a friend who just had a new knee installed he to now uses a cane . I won’t...