ESE's works engine tuner

[adegnes]

The shit has hit the fan.

[F5 Dave]

The fan has shorted out, the shit has caught fire and the orphanage is ablaze.

[husaberg]

The fan has shorted out, the shit has caught fire and the orphanage is ablaze.

With a bit of luck he might have two strokes.

[adegnes]

[TZ350]

Page 1600 ...

Aprilia closed their big end pins with conical plugs, but that wouldn't solve the aux/transfer short circuiting either.

Past experience tends to point into the opposite direction: circlips can be very good at causing disaster.

And what about that 3 piece pin? Well, what about acceleration values of 5000 g around BDC and 7850 g around TDC (Aprilia RSA at its 14500 maximum rpm)?

Do you think any built-up contraption would stay together long enough under that kind of stress? You're right about that, providing you use circlips at all. That is why I did away with them and click my plugs straight into the circlip grooves.

The issue is not the volume of the remaining space, but the cross flow area of the leakage path between auxiliary exhaust ports and transfer ports.

Turning to the simplest solution I could think of: leave the circlips out (saves weight) and click the plugs directly into the circlip grooves. They will work fine in combination with a normal piston pin (saves a huge amount of money compared to a Pankl pin) and it reduces the aux/transfer leak path better then even the latest domed Pankl pin, shown in the picture below-left. Right is my simple, very light plug.

There were never any lubrication problems, only a problem when someone used plugs, designed for a Simson piston, in a Kreidler piston which has different circlip goove dimensions. One plug came out, passing through the engine without doing any harm, but then the piston pin started wandering sideways, scraping the cylinder bore.

Most of the research went into finding the proper plug material. And since I don't expect I'll ever get rich from selling plugs, I'll let the cat out of the bag:
the plugs are made of Torlon. The stuff ain't cheap, but you'll get about 20 re-usable(!) plugs for the price of one Pankl pin.

Attachment 326134 Attachment 326135

Is it 4301? At least available easily enough.

http://nz.rs-online.com/web/p/plastic-rods/2577136/

Yep, that's the stuff. Like I said, it ain't cheap.

this my truing tool. 2 lasered vertical plates and 2 lasered v's:

Attachment 326165

was only few bucks to get the stuff lasered and can be upgraded with small bearings + discs to balance cranks.

[ken seeber]

2 strokes live on........

[Frits Overmars]

Adegnes, I have to say that your video diary is becoming essential viewing, don`t worry too much about the small mistakes and errors made, we all have done that. Keep it up you must a world wide following by now all willing you on, terrific stuff , thanks!

Adegnes, I like the way that you don't edit your mistakes out of your videos but just show them so we can all learn from them, like putting a clamp on that slug only after we all could see it coming that it wouldn't work without a clamp.
I also like the somewhat shorter length of that last video. But I have to say that you'll never make a good politician; you're too honest .

By the way: most mass-production crankshafts are forged but that doesn't mean they are cast-iron.

[adegnes]

Adegnes, I like the way that you don't edit your mistakes out of your videos but just show them so we can all learn from them, like putting a clamp on that slug only after we all could see it coming that it wouldn't work without a clamp.
I also like the somewhat shorter length of that last video. But I have to say that you'll never make a good politician; you're too honest .

By the way: most mass-production crankshafts are forged but that doesn't mean they are cast-iron.

Thanks! I try to make them as entertaining as I can and feel the mistakes help with that!

E11 is out, shorter, more mistakes and now with an intro/outro!
https://www.youtube.com/watch?v=_xVmPj0h7Yc

[Haufen]

Ham fisted wrench man???

Yep its the wrench.
Some plug sockets have a step down inside, and this means the porcelain is supporting that smaller diameter.
When you lean on the wrench, you are leaning on the porcelain - and not being flexible at all, it cracks off the resistor tube.
Change sockets.

Thanks for the tip! I will double-check the wrench and sockets. But I think this one even has a rubber inside.
At least the last one of the spark plugs had only been in contact with an open ended wrench, so no chance of contact with the porcelain. Unfortunately it showed the same damage.
The other two plugs have been tightened with both the conventional spark plug socket and an open ended wrench. But maybe the open ended wrench is the cause, as I started tightening the plugs with it about the same time the damage started.

If you have any other ideas, please let me know.

[wobbly]

So Adegnes, I thought we had finally " got thru ".
The Tungsten is welded in, as you say maybe not pretty ,but the balance factor is still bloody miles off.
You have done all this work,yet the thing is not even close to being done right - i need to come over there and belt you
over the head with an empty Rum bottle, maybe better a plastic bag full of bigger Tungsten's.

[adegnes]

So Adegnes, I thought we had finally " got thru ".
The Tungsten is welded in, as you say maybe not pretty ,but the balance factor is still bloody miles off.
You have done all this work,yet the thing is not even close to being done right - i need to come over there and belt you
over the head with an empty Rum bottle, maybe better a plastic bag full of bigger Tungsten's.

And it seems like while working on the "half assing", personal issue #2 has surfaced; absent-mindedness(if that's a word)
As I often do, I got carried away and forgot about the weight being too low.

Ok, enough. I'll recheck the bf, assemble the engine and try it. It wont be perfect, but at least then I know how it reacts to that specific balance factor - I can pretend the mistakes made were in the name of science.

This video series has turned into a tragicomedy!
I've obviously opened up a can of worms here, what's next?

[Hemi Makutu]

Dynafocal engine mounts?

http://patentimages.storage.googleap...329-D00005.png

[husaberg]

Thanks! I try to make them as entertaining as I can and feel the mistakes help with that!

E11 is out, shorter, more mistakes and now with an intro/outro!
https://www.youtube.com/watch?v=_xVmPj0h7Yc

https://www.youtube.com/watch?v=_xVmPj0h7Yc

I enjoy your videos Plus your english is great, esp considering its likely your second or third language.
Most kiwis struggle with one.
I must ask though, Did you consider pressing the crank apart and then welding?
ps youre out of ethanol.

[adegnes]

I enjoy your videos and your english is great considering its likely your second or third language
I must ask though, Did you consider pressing the crank apart and then welding?

Yep, as an afterthought of course... Trying to stay in character here!
Edit: Oops, forgot to say thank you!

[adegnes]

ps youre out of ethanol.

Need to do something about that!