Kenji pipe

Anyone run/ran one of these? Read the wiki and I think it said good for >50cc kits? Not sure it seemed to be broken English.

The slip style of pipe never seemed to take off so I'm as curious as to why. Seems like a good idea in theory...

IMG_20200126_174148.jpg

Re: Kenji pipe

what's it for. looks cool, doesn't look built for massive rippage but short header

Re: Kenji pipe

Dirty30 Dillon /

I think the sliding header on this bike was mostly used to get around a ball joint/swinging hanger.

Ideally, a sliding header works best in a fixed gear motor to help utilize the roving powerband, aka, modulate length to get both a low rpm pull and high RPM rev out.

Re: Kenji pipe

Well, it definitely had an air leak.

if you want to sell it shoot me a PM

Re: Kenji pipe

Brandon Weiss (Detective brandon to you) /
3ncx6t.jpg

Re: Kenji pipe

> Dirty30 Dillon Wrote:

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

> I think the sliding header on this bike was mostly used to get around a

> ball joint/swinging hanger.

>

> Ideally, a sliding header works best in a fixed gear motor to help

> utilize the roving powerband, aka, modulate length to get both a low rpm

> pull and high RPM rev out.

Yep just a different style, although they still have a ball joint. So maybe it just adds more complexity/cost to have the header slide vs. swinging pipe hanger

Thats an interesting thought, although I'm not sure how you would change the header length on a single speed without the swinging motion. Maybe something mechanical?

Re: Kenji pipe

needs the ball to keep the geometry. I really like the idea of sliding for the swung variated motors, as it variates you change tuned length ideally to match, that's a neat idea though I doubt if it works out that way practically.

Re: Kenji pipe

> Born to be WillD Wrote:

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

> needs the ball to keep the geometry. I really like the idea of sliding

> for the swung variated motors, as it variates you change tuned length

> ideally to match, that's a neat idea though I doubt if it works out that

> way practically.

Thats kinda what I've been thinking. Cool idea, might not actually make a bit of difference in reality.

So I decided to ask the crowd, didn't know if any crazy French racers use em or something.

Re: Kenji pipe

Dirty30 Dillon /

> Blocky Mc Blockface Wrote:

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

> Thats an interesting thought, although I'm not sure how you would change

> the header length on a single speed without the swinging motion. Maybe

> something mechanical?

In this case, it would be a mechanical actuation, much like JBot's boner (which does theoretically the same thing.

Re: Kenji pipe

> Brandon Weiss (Detective brandon to you) Wrote:

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

>

We still have a couple kicking around . Simonini used to make a couple of the pumper style exhausts as well. I have one that basically looks like a Puch Simonini but sliding header.

I had a Kenji on a Carabella Motopony with a quick release to adjust header length on the fly. Didn't really notice any difference to be honest but that bike was clapped anyways. Plus it only moves about an inch or so. Never used one on a Peugeot. Only every tossed it on other bikes.

Re: Kenji pipe

Brandon Weiss (Detective brandon to you) /

> Blake MD No PM Plz Wrote:

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

> > Brandon Weiss (Detective brandon to you) Wrote:

>

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

>

> >

>

> We still have a couple kicking around. Simonini used to make a couple of

> the pumper style exhausts as well. I have one that basically looks like

> a Puch Simonini but sliding header.

>

> I had a Kenji on a Carabella Motopony with a quick release to adjust

> t header length on the fly. Didn't really notice any difference to be

> honest but that bike was clapped anyways. Plus it only moves about an

> inch or so. Never used one on a Peugeot. Only every tossed it on other

> bikes.

Too cool! Bonus points if you get the photo reference

Re: Kenji pipe

> Blake MD No PM Plz Wrote:

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

> > Brandon Weiss (Detective brandon to you) Wrote:

>

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

>

> >

>

> We still have a couple kicking around. Simonini used to make a couple of

> the pumper style exhausts as well. I have one that basically looks like

> a Puch Simonini but sliding header.

>

> I had a Kenji on a Carabella Motopony with a quick release to adjust

> t header length on the fly. Didn't really notice any difference to be

> honest but that bike was clapped anyways. Plus it only moves about an

> inch or so. Never used one on a Peugeot. Only every tossed it on other

> bikes.

Whats the header ID?

Re: Kenji pipe

> Brandon Weiss (Detective brandon to you) Wrote:

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

> > Blake MD No PM Plz Wrote:

>

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

>

> > > Brandon Weiss (Detective brandon to you) Wrote:

>

> >

>

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

>

> >

>

> > >

>

> >

>

> > We still have a couple kicking around. Simonini used to make a couple

> of

>

> > the pumper style exhausts as well. I have one that basically looks

> like

>

> > a Puch Simonini but sliding header.

>

> >

>

> > I had a Kenji on a Carabella Motopony with a quick release to adjust

>

> > t header length on the fly. Didn't really notice any difference to be

>

> > honest but that bike was clapped anyways. Plus it only moves about an

>

> > inch or so. Never used one on a Peugeot. Only every tossed it on other

>

> > bikes.

>

> Too cool! Bonus points if you get the photo reference

Header ID is 26mm.

Re: Kenji pipe

Ty!!

Re: Kenji pipe

> Blake MD No PM Plz Wrote:

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

> > Brandon Weiss (Detective brandon to you) Wrote:

>

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

>

> >

>

> We still have a couple kicking around. Simonini used to make a couple of

> the pumper style exhausts as well. I have one that basically looks like

> a Puch Simonini but sliding header.

>

> I had a Kenji on a Carabella Motopony with a quick release to adjust

> t header length on the fly. Didn't really notice any difference to be

> honest but that bike was clapped anyways. Plus it only moves about an

> inch or so. Never used one on a Peugeot. Only every tossed it on other

> bikes.

Interesting, I am going to order one on Thursday, gonna try it out on a 50cc LC Euro kit that came my way, Polini cases, phbg, should be interesting

Re: Kenji pipe

> Interesting, I am going to order one on Thursday, gonna try it out on a

> 50cc LC Euro kit that came my way, Polini cases, phbg, should be

> interesting

Cool, lmk what ya think

Re: Kenji pipe

Brandon Weiss (Detective brandon to you) /

> Blake MD No PM Plz Wrote:

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

> > Brandon Weiss (Detective brandon to you) Wrote:

>

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

>

> > > Blake MD No PM Plz Wrote:

>

> >

>

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

>

> >

>

> > > > Brandon Weiss (Detective brandon to you) Wrote:

>

> >

>

> > >

>

> >

>

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

>

> >

>

> > >

>

> >

>

> > > >

>

> >

>

> > >

>

> >

>

> > > We still have a couple kicking around. Simonini used to make a

> couple

>

> > of

>

> >

>

> > > the pumper style exhausts as well. I have one that basically looks

>

> > like

>

> >

>

> > > a Puch Simonini but sliding header.

>

> >

>

> > >

>

> >

>

> > > I had a Kenji on a Carabella Motopony with a quick release to adjust

>

> >

>

> > > t header length on the fly. Didn't really notice any difference to

> be

>

> >

>

> > > honest but that bike was clapped anyways. Plus it only moves about

> an

>

> >

>

> > > inch or so. Never used one on a Peugeot. Only every tossed it on

> other

>

> >

>

> > > bikes.

>

> >

>

> > Too cool! Bonus points if you get the photo reference

>

>

>

>

>

> Header ID is 26mm.

LOL, you got it! Well, just about. The guy in the picture is Kenji

Initial D is my jam

Re: Kenji pipe

« Go to Topics — end of thread

Want to post in this forum? We'd love to have you join the discussion, but first:

Login or Create Account