Re: Simonini that wanted to be a sidebleed

I don’t really know what I’m talking about, but wouldn’t it help if the stinger of the outlet bleed pipe had a few holes drilled thru the sides of the part extending into the chamber? It seems that would help the pressure find its way out.

Re: Simonini that wanted to be a sidebleed

Alan Jackson /

sorry for thread hijack but i thought it was done

the whole stinger is now inside my pipe

if you zoom in the second pic you can see only an inch poking out.

almost as quiet as with the silencers on

Re: Simonini that wanted to be a sidebleed

> Alan Jackson Wrote:

> -------------------------------------------------------

> sorry for thread hijack but i thought it was done

>

> the whole stinger is now inside my pipe

>

> if you zoom in the second pic you can see only an inch poking out.

>

> almost as quiet as with the silencers on

Who the fuck do you think are? Jk

Naw it’s cool dude I don’t care I’m supirzed people are still typing. Did you gain any performance?

I wanna go fast too

Re: Simonini that wanted to be a sidebleed

> Alan Jackson Wrote:

> -------------------------------------------------------

> sorry for thread hijack but i thought it was done

>

> the whole stinger is now my pipe

>

> if you zoom in the second pic you can see only an inch poking out.

>

> almost as quiet as with the silencers on

Internal stingers shouldn't go farther in than the end of the belly (where it meets the rear cone.) Otherwise it disrupts the return wave. Usually.

Not sure how far yours goes, just sayin'

Re: Simonini that wanted to be a sidebleed

All this side bleed knowledge being dropped.

Fuck hp gains up the yin-yang.

That exhaust is now siting on the shelf down stairs, I’ll pull it out & re open the forum later on.

Mopeds dawg lol

Dirty Dillion Giggles

Re: Simonini that wanted to be a sidebleed

Alan Jackson /

> baird co Wrote:

> -------------------------------------------------------

> > Alan Jackson Wrote:

>

> > -------------------------------------------------------

>

> > sorry for thread hijack but i thought it was done

>

> >

>

> > the whole stinger is now my pipe

>

> >

>

> > if you zoom in the second pic you can see only an inch poking out.

>

> >

>

> > almost as quiet as with the silencers on

>

> Internal stingers shouldn't go farther in than the end of the belly

> (where it meets the rear cone.) Otherwise it disrupts the return wave.

> Usually.

>

> Not sure how far yours goes, just sayin'

mines well into the belly (oops)

Re: Simonini that wanted to be a sidebleed

> Alan Jackson Wrote:

> -------------------------------------------------------

>

> mines well into the belly (oops)

But , does it work ?

Re: Simonini that wanted to be a sidebleed

> P D Wrote:

> -------------------------------------------------------

> > Alan Jackson Wrote:

>

> > -------------------------------------------------------

>

> >

>

> > mines well into the belly (oops)

>

> But , does it work ?

That's the real question right there. Everything I've read says where the stinger should be, but there's scant evidence of it not working if you go into the belly.

I've never experimented with it, because making and testing a sliding stinger is something I don't have time for at the track, and not really possible (or reliable) in the street in front of my house.

Love to have a dyno so I could mess around with crap like that all day.

Re: Simonini that wanted to be a sidebleed

If you have the space you can cobble one together from an electric motor and just measure the kw you get out of it.

Re: Simonini that wanted to be a sidebleed

Alan, is that Prince Charles in that last photo?

Re: Simonini that wanted to be a sidebleed

Un side bleed it

Re: Simonini that wanted to be a sidebleed

> Dickie Thompson Wrote:

> -------------------------------------------------------

> Un side bleed it

well if I ever wanna run it normally again. just thought it would be fun to experiment a little and post something interesting. will probably keep trying to tune it before going back to the normal end bleed set up.

It was definitely quiter by a lot but also slow ass fuck.

I get bored just bolting stuff together especially proven good parts. like to mess around and waist money ...it’s probably not a good thing but I truly enjoy myself in the end. Its fun to use old junk With no documentation, it’s like rolling the dice lol

This thread was nothing to be serious about, it’s Mopedin lol.

Shout out to Zach!

Re: Simonini that wanted to be a sidebleed

Add like 6 inches to the header

Re: Simonini that wanted to be a sidebleed

Dirty30 Dillon /

I'm all for ad-hoc'ing, but the Simonini is like THE og hard and hi-hitting puch pipe. Sidebleeding only softens that hi peak hit to the point where it's flat.

I honestly haven't really seen a huge reason to sidebleed anything. Of the dozens of pipes I have hanging on the wall, 0 are sidebled from the factory. Modern pipe manu's prefer to use a perforated secondary cone to achieve a wider, "dual" powerband but retain linear gas flow through the pipe.

All of the hi-power, major manu scooter pipes I have use this.

Re: Simonini that wanted to be a sidebleed

> Dirty30 Dillon Wrote:

> -------------------------------------------------------

> I'm all for ad-hoc'ing, but the Simonini is like THE og hard and

> hi-hitting puch pipe. Sidebleeding only softens that hi peak hit to the

> point where it's flat.

>

> I honestly haven't really seen a huge reason to sidebleed anything. Of

> the dozens of pipes I have hanging on the wall, 0 are sidebled from the

> factory. Modern pipe manu's prefer to use a perforated secondary cone to

> achieve a wider, "dual" powerband but retain linear gas flow through the

> pipe.

>

> All of the hi-power, major manu scooter pipes I have use this.

pic of the perforated?

Re: Simonini that wanted to be a sidebleed

> Dickie Thompson Wrote:

> -------------------------------------------------------

> pic of the perforated?

I've seen what Dillon is refering to .

The secondary cones are simply cone shaped perforated sheet metal attached to the inside of the cone .

This is the type used :

Re: Simonini that wanted to be a sidebleed

Dirty30 Dillon /

> Dickie Thompson Wrote:

> -------------------------------------------------------

> pic of the perforated?

https://buildandclick.com/html/dual_power.html

This is the conceptual design, see images in link. The interior, perforated cone mimics a much higher rpm (shorter tuned length, steeper convergent cone angle, etc) while the main cone is that of a mid-rpm pipe.

In theory, at low frequencies/speeds the waves pass through the perforated cone and bounce off of the hard, main cone. As frequencies/speeds increase in the chamber, the waves cannot pass through the perforated cone and instead they bounce back of that, effectively mimicking a shorter pipe for better hi-rpm power.

Re: Simonini that wanted to be a sidebleed

I really thought I was going to find this new unknow moped performance gain and end up with a slow ass exhaust lol

I just wanna go faster, plz moped gods show me the way!

I was trying to mellow out the high rpms, gain some bottom end, and quite the exhaust. My nabs like the estriol I have because it’s really quite, this simion just screams like a fucking chain saw and reached stupid high rpms with lil bottom end. I guesse my loud pipe days are over, I got that old man status!

Electric bikes are cool (edited)

Re: Simonini that wanted to be a sidebleed

Dirty30 Dillon /

Yeah, the Simonini was design-built to have a narrow, hard peak. Sidebleeding washes out the hard edge and also mellows the hit, but doesn't change the fact that the tuned length is short to rock those RPMS.

Your best bet would be to add a few inches of header and install a better silencer on there.

Re: Simonini that wanted to be a sidebleed

Simo on a korado cylinder actually hits really hard in the low end

Re: Simonini that wanted to be a sidebleed

Alan Jackson /

> Ryan Graeme Wrote:

> -------------------------------------------------------

> Alan, is that Prince Charles in that last photo?

yes england is a small country and were always bumping into royalty, pop stars sports stars and murderers etc

Re: Simonini that wanted to be a sidebleed

Alan Jackson /

> Dirty30 Dillon Wrote:

> -------------------------------------------------------

> > Dickie Thompson Wrote:

>

> > -------------------------------------------------------

>

> > pic of the perforated?

>

> https://buildandclick.com/html/dual_power.html

>

> This is the conceptual design, see images in link. The interior,

> perforated cone mimics a much higher rpm (shorter tuned length, steeper

> convergent cone angle, etc) while the main cone is that of a mid-rpm

> pipe.

>

> In theory, at low frequencies/speeds the waves pass through the

> perforated cone and bounce off of the hard, main cone. As

> frequencies/speeds increase in the chamber, the waves cannot pass

> through the perforated cone and instead they bounce back of that,

> effectively mimicking a shorter pipe for better hi-rpm power.

that is a fantastic idea !!

if it works that is

im gonna try it on my next pipe build

Re: Simonini that wanted to be a sidebleed

Alan Jackson /

> P D Wrote:

> -------------------------------------------------------

> > Alan Jackson Wrote:

>

> > -------------------------------------------------------

>

> >

>

> > mines well into the belly (oops)

>

> But , does it work ?

its a lot quieter than when they were sticking out and it seems to work well but ive learned that without a dyno its impossible to know whats actually happening, a tiny mid range flat spot can over emphasise the hit when pipe comes back on making you think its better than one with nice smoother power delivery

pals just got a dyno up and running at his workshop that i will have to try when ive saved up enough....

Re: Simonini that wanted to be a sidebleed

> Alan Jackson Wrote:

> -------------------------------------------------------

> > P D Wrote:

>

> > -------------------------------------------------------

>

> > > Alan Jackson Wrote:

>

> >

>

> > > -------------------------------------------------------

>

> >

>

> > >

>

> >

>

> > > mines well into the belly (oops)

>

> >

>

> > But , does it work ?

>

> its a lot quieter than when they were sticking out and it seems to work

> well but ive learned that without a dyno its impossible to know whats

> actually happening, a tiny mid range flat spot can over emphasise the

> hit when pipe comes back on making you think its better than one with

> nice smoother power delivery

>

> pals just got a dyno up and running at his workshop that i will have to

> try when ive saved up enough....

Yea Dynos are cool

Re: Simonini that wanted to be a sidebleed

It looks a ringer for Charles. I'm a Brit too, but been living in France for nearly 4 years now. Luckily I didn't bump in to Jimmy Saville or go for a Swim at Barrymore's. Although I once went to watch the National Lottery at the Eurotunnel in Ashford and saw Anthea Turner, Honor Blackman and some bloke. I also won a Sega Megadrive 2 with Sonic and Knuckles on a show presented by Mark Speight, it ended well for him.

Re: Simonini that wanted to be a sidebleed

Dirty30 Dillon /

> Ryan Graeme Wrote:

> -------------------------------------------------------

> It looks a ringer for Charles.

That's because it is a picture of Charles Photo-shopped over someone elses face....

Re: Simonini that wanted to be a sidebleed

Alan Jackson /

> Ryan Graeme Wrote:

> -------------------------------------------------------

> It looks a ringer for Charles. I'm a Brit too, but been living in France

> for nearly 4 years now. Luckily I didn't bump in to Jimmy Saville or go

> for a Swim at Barrymore's. Although I once went to watch the National

> Lottery at the Eurotunnel in Ashford and saw Anthea Turner, Honor

> Blackman and some bloke. I also won a Sega Megadrive 2 with Sonic and

> Knuckles on a show presented by Mark Speight, it ended well for him.

i confess it is photoshopped

its from a facebook album i made after a royal wedding rideout a couple of years ago

you have to read the comments about each pic to get the full story

dunno if this will work

https://www.facebook.com/alan.jackson.7731/media_set?set=a.10213758905984616&type=3

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