ESE's works engine tuner

[RomeuPT]

The cylinder must be from the same model/brand of the engine that it is bolted on?
Is there an age limit for the cylinder?

Do what a lot of people on Portugal do, grab an Rotax cylinder(from an Aprilia RS 125, road legal, so its okey), the thing is that you guys also have capacity limits, but over here there are lots(more than 10) yamaha dt lc 50 base engines with rotax 122 and rotax 123 cylinders, there is at least one that has the 160cc Polini kit for the rotax engine, there is one vespa 50s getting one(but that one is based in some quatrini crankcases, but none the less, its just a mather of time before someone slaps a rotax cylinder in some old original vespa 50s crankcases).

Já são tantas? Fogo, que brutos :/

And then they drag race on open 50cc class

[koba]

I think the carb is a Mikun VDxx?

I.E. VD32

There are quite a lot of differences across the models, I think the one from the RG150 is a 28 and is offset.
The slides vary in height (Not just cut away angle) and the 28 has a different needle jet arrangement to the RGV ones I have got.

The RGV 32's should be dirt cheap as people upgrade to 34's.

It think various models have many variations with powerjets, solenoids etc.

[F5 Dave]

Before getting too excited the solenoid are an air bleed not a PJ snd. 28 then I stand corrected.

[Muciek]

I have 2 of them 34mm's and each one is different. One does have amixture screw but no Powerjet passage (not drilled)and 2nd one does have powerjet but instead of having mixture screw it have additional jet in front of the body. One had MJ290 and 2nd (with PJ) MJ190.

[adegnes]

So, after punching through to the cylinder studs in numerous places while trying to cut somewhat decent transfer and exhaust ducts into my cheap airsal scooter kit, I got fed up, scrapped it and went looking for something less annoying to work with.
The EMOT cylinder is out of the question, just can't justify the price for my use(read girlfriend would kill me), same with the newer ktm sx50 topend.

Found the iame m50.
http://www.chi-motos.de/gambio/produ...moto-50cc.html

Looks promising indeed!
On the downside it has a cast iron liner but that also makes for easier porting without the constant fear of flaking nikasil. It's not terribly expensive either.




Here's a dyno run, performed by someone called "V-man Racing" from sweden, rw hp with the engine mounted in a minimoto.
http://www.minimotoscene.co.uk/forum...ine-by-Parilla


The peak rpm numbers and graph doesn't match up, don't know what's up with that, either way it looks pretty impressive for an out-of-the-box fifty.
edit: the graph and numbers do match, I was just reading it wrong...
Am I right in thinking that with a pipe better optimized for peak power, sacrificing the massive powerband/overrev, and maybe paired with a rotary inlet and a bigger carb(suited for someone with a variator=me), this could really be something?

I'm exited, ordering one as soon as I can afford it.

[senso]

There are also nicasil versions of that cylinder, available for as low as 50€, but I would have more "faith" in a cheapish iron liner than in the nicasil plating of a 50€ cylinder.

Seems like a baby rsa, so cute

[adegnes]

There are also nicasil versions of that cylinder, available for as low as 50€, but I would have more "faith" in a cheapish iron liner than in the nicasil plating of a 50€ cylinder.

Seems like a baby rsa, so cute

What!? Where are these 50€ copies you speak of?

Yeah, I'm with you on the more faith thing.

Haha, I apparently "blogged" this reply to...

[adegnes]

Those things on the exhaust side of the water jacet are optional coolant fittings btw.

Attached a pdf from the manufacturer of the bike the engine is fitted in "Blata Ultima", backing the dyno figures.

Edit: oops, that pdf is of Blata's own engine, not the IAME. They are claiming 12kw@11500 from the 2015 model.
http://shop.goped-scooter-tuning.de/...ducts/050509-1

[senso]

I think this is the cylinder, but yeah, its not a 50cc, its a 40cc cylinder, a friend of mine sent me some pictures and it is sort of a mini RSA cylinder and it seems to have enought meat to bore out to 40mm(for 50cc), so, no really related to that IAME cylinder.
http://shop.goped-scooter-tuning.de/...roducts/010616

[adegnes]

The username "sb07" is popping up on various minimoto forums, I think he's posting here to, maybe he can shed some light on the subject.

[husaberg]

The username "sb07" is popping up on various minimoto forums, I think he's posting here to, maybe he can shed some light on the subject.

He's on Pitlane.

[dark art]

The EMOT cylinder is out of the question, just can't justify the price for my use(read girlfriend would kill me), same with the newer ktm sx50 topend.

After comparing several 50cc cyinders, including the IAME one, the ktm was the cheaper cylinder!
Is not so expensive as most people think, directly from KTM.

[Flettner]

Off topic but, there was some discussion a while back on nikasiling LM13 alloy. It would seem no problem, plates well.

[136kg136ps]

Smokers are everywhere, this is yesterday in Ponte Vedra Beach Florida.These guys fly up and down the beach and on Christmas dress up as Santa and drop bags of candy.

[RomeuPT]

So, after punching through to the cylinder studs in numerous places while trying to cut somewhat decent transfer and exhaust ducts into my cheap airsal scooter kit, I got fed up, scrapped it and went looking for something less annoying to work with.
The EMOT cylinder is out of the question, just can't justify the price for my use(read girlfriend would kill me), same with the newer ktm sx50 topend.

Found the iame m50.
http://www.chi-motos.de/gambio/produ...moto-50cc.html

Looks promising indeed!
On the downside it has a cast iron liner but that also makes for easier porting without the constant fear of flaking nikasil. It's not terribly expensive either.




Here's a dyno run, performed by someone called "V-man Racing" from sweden, rw hp with the engine mounted in a minimoto.
http://www.minimotoscene.co.uk/forum...ine-by-Parilla


The peak rpm numbers and graph doesn't match up, don't know what's up with that, either way it looks pretty impressive for an out-of-the-box fifty.
Am I right in thinking that with a pipe better optimized for peak power, sacrificing the massive powerband/overrev, and maybe paired with a rotary inlet and a bigger carb(suited for someone with a variator=me), this could really be something?

I'm exited, ordering one as soon as I can afford it.

Very low port and almost 17hp out of the box, impressive!