ESE's works engine tuner

[RomeuPT]

From the observation of the exhaust graph seems that ti and stainless increase peak rpm by ~4%....

And in this topic is a post talking about 8% longer for stainless and Ti, I have been making them in between so I don't get very wrong...

[TZ350]

How to view all the images.



Go to Thread Tools at the top of the page and View Thread Images.



Now roll to the bottom of the page.



Here you can sort them from the beginning.



70 to a page, there are 6,000+ images



If you find something interesting just click on the images title and it will take you to the original post.

[2T Institute]

hinged reeds, yummy! I must say they look better than my 24/7-prototype of 20-odd years ago. Please tell me more.

Just got a email from a Friend who went to the same trade show, they obviously been reading Pit Lane

[Yow Ling]

Started porting a new cylinder tonight, its way easier if the sleeve isnt fitted yet, can use the flip top barrel to see the angles better.
the dark area on the sleeve is the acid etched bit showing the stock porting of the rgv250 cylinder. This sleeve is just roughed out with the milling machine

[TZ350]

The sleeve is very interesting, an alloy one like it will be where I go if the air cooled RGV250 cylinder idea does not work out.

The plan will be to make a 100cc alloy sleeve that is copper metal sprayed 1-2 mm on the outside for good heat conduction away from the exhaust port area to the much larger surface area of the sleeve proper for contact conduction to the original RGV cylinder block.

Also the RGV block would be bored for a slip fit on the sleeve. Retention and conduction contact would rely on the sleeve being hotter than the block and the thermal expansion making a tight fit between the alloy sleeve and block.

Copper coating might have application to the Iron sleeve too.

[Yow Ling]

This sleeve is a 0.004" shrink fit, I don't think I would be keen on relying on the expansion of the sleeve to hold it in place. Nasa might be , they do pretty edgy stuff

[Frits Overmars]

....the RGV block would be bored for a slip fit on the sleeve. Retention and conduction contact would rely on the sleeve being hotter than the block and the thermal expansion making a tight fit between the alloy sleeve and block.

Don't go there. This is obsolete practice for cold-running methanol model engines, and even there pistons collapse because they can't get rid of their heat, once the engine starts to develop anything like decent power. Furthermore, beginning around the exhaust port, oil will creep between cylinder and sleeve (it does that even with shrunk-in sleeves). That oil will then char and muck up what was left of heat transfer.
If you must use a sleeve, apply a conical fit like Jan Thiel did in his last sleeved cylinders (about a century ago). He used a morse cone angle and could fit and disassemble the sleeve as often as he liked, with just a slight press fit for the last millimeter of depth.

[TZ350]

If you must use a sleeve, apply a conical fit like Jan Thiel did in his last sleeved cylinders (about a century ago). He used a morse cone angle and could fit and disassemble the sleeve as often as he liked, with just a slight press fit for the last millimeter of depth.

Great idea, Thanks.

[Flettner]

Who would use a sleeve

[Yow Ling]

Who would use a sleeve

Im working on that !

[TZ350]

Another Smoky start for Av.

We have been running Av's bike up on the dyno after a rebuild.



And it smoked worse than ever, eventually traced the problem to the Loctite number 2 gasket sealant we had used on the cases.

Good for everything fuel, oil etc it says, but as it turns out, hot auto trans dissolves it.

[F5 Dave]

3bond for cases. Loctite like that is awesome everywhere else.

[goose8]

Another Smoky start for Av.

We have been running Av's bike up on the dyno after a rebuild.



And it smoked worse than ever, eventually traced the problem to the Loctite number 2 gasket sealant we had used on the cases.

Good for everything fuel, oil etc it says, but as it turns out, hot auto trans dissolves it.

I hope you have detuned it ?

[TZ350]

Yep, the oil dissolved the sealant all right.

3bond for cases.

Please tell me more, and where do I get it.

[TZ350]

I hope you have detuned it ?

Yep ..... Scouts Honer.....