12 replies to this topic

[Gowza]

IXIL used to do a 2-1 for the 900 but you couldn't keep the centrestand. I'm not sure how it affected basic maintenance like oil change etc. 

 

Do they exist and if they do has anyone tried/got one? 

[ramo]

yep had one, centre stand not an  issue for me,

 

fitted a scottoiler, already had paddock stand and abba stand, jobs agood en 

 

 

 http://www.carpe-tdm...xil#entry277185

Edited by ramo, 06 June 2018 - 07:28 pm.

[steve27bha]

yep had one, centre stand not an  issue for me,

 

fitted a scottoiler, already had paddock stand and abba stand, jobs agood en 

 

He had one because he flogged it - to me.

I also have no centre stand.

I also have a Scottoiler (I don't understand why everyone doesn't use one) and a paddock stand and an EazyRizer lift.

It has no effect on oil changes or other regular maintenance.

Here's a pic of the cross-pipe from the LHS to the right.

 IXIL 2into1 fit 014.JPG   112.49KB   1 downloads

HTH

[Gowza]

Thanks both, very helpful. 

 

Steve - if the exhaust ever comes off yer then let me know, It's appears to be exactly what I'm after...

[jiff]

.....while this topic seems to be still alive,

......and in relation to previous (old) discussion referred to above,
I would be very interested in definitive & informed info. in relation to

the appropriateness of 2 into1 systems vs 2 into 2, for (270 deg , if relevant) twins......

I have a vague impression that
......the ‘total volume’ of the can(s) needs to have some relation to the volume of the
gas/air mix, before combustion (?)....per cylinder (?) (= combustion chamber volume)

.....or something like that.......and the effect, +ive or -ive, of back pressure,
...& what creates that, & diameter of downpipes.........etc, etc.......

half heartedly tried to find stuff on this topic on internet when designing my system....
but failed to come up with anything at the time......
so relied on instinct / weight saving / subjective judgement re: prettiness factor...
......no regrets......really

jiff.

[Gowza]

Care to shed more on what system you designed and ended up with jiff? 

 

I just like the look of 2-1's more and would be happy to junk my standard system for summat lighter, throatier (not headache inducing) and hopefully less restrictive. But the practical side o' me wants to keep the sidestand and get to the oil plug. Hey ho. 

[Nog]

.....or something like that.......and the effect, +ive or -ive, of back pressure,
...& what creates that, & diameter of downpipes.........etc, etc.......
 

 

 

The negative would be possible problems with scavenging.  I don't like the look of that connecting pipe in that picture.  It's almost at 90 degree's by the look of it, so you end up with a gas flow that simply hits a T junction which stops it dead and it will try to go both directions until the flow from the other cylinder hits it.  It should meet the other pipe at an angle, so that it can help 'pull' the gases along and aid scavenging.

 

Like I say though, may just be the angle of the photo and it's not so bad.  Personally I think Mr Yamaha know's more about exhaust design than I do, so I'm happy to leave alone

[jiff]

http://www.carpe-tdm...608&qpid=361665

Care to shed more on what system you designed and ended up with jiff? i

http://www.carpe-tdm...608&qpid=361665

[Gowza]

http://www.carpe-tdm...608&qpid=361665

 

Very interesting read, cheers. 

 

 

Personally I think Mr Yamaha know's more about exhaust design than I do, so I'm happy to leave alone

 

That I totally agree with however Mr. Yamaha also has to think about emissions, noise, regulations and reliability across multiple markets. 

 

Until I can find something that I know is gonna work reliably, safely and efficiently it's staying as stock. 

[steve27bha]

The negative would be possible problems with scavenging.  I don't like the look of that connecting pipe in that picture.  It's almost at 90 degree's by the look of it,....

 

It's more like 60'

 

 IXIL 2into1 fit 011.JPG   104.87KB   1 downloads

Edited by steve27bha, 08 June 2018 - 10:19 am.

[Nog]

No worries, looked pretty straight on in that first picture

[Studley Ramrod]

Nicely made bit of kit that.

[dablik]

Afraid i squashed mine i found it gave more midrange power along with less engine breaking, quality exhaust.