ESE's works engine tuner

[twotempi]

Well, i've met both you and Rob. Defiantly works for either of you...Didn't you tell me you had enough Benelli barrels to keep you happy playing for years ?
tried doing a triple exhaust in one yet ?

Yes - i have enough to get me into trouble for quite some time.

The trouble is that when ever I think i know what I want to do some sod goes and posts more information on this thread and i have to change what i thought I was going to do !!!

[F5 Dave]

Report from northern hemisphere.

Attachment 313088Attachment 313089

Thanks Ken that made me laugh.

Hey where did the other text go? Must have changed it in between reading it & my post.

[peewee]

anybody welded on a iron sleeved cylinder ? got some of those reproduction yamaha cylinders i was going to add some aux exh ports but im thinking the casting will pull away from the sleeve. maybe its best to cut out the sleeve with a lathe or something and install a new one afterwards ?

[husaberg]

anybody welded on a iron sleeved cylinder ? got some of those reproduction yamaha cylinders i was going to add some aux exh ports but im thinking the casting will pull away from the sleeve. maybe its best to cut out the sleeve with a lathe or something and install a new one afterwards ?

Yamaha (along with most other production bikes) sleeves are corrugated and bonded with a coating then cast in place (to achieve a good surface area and avoid slipping).
A pressed in sleeve will not achieve the same thermal properties.
Neither are as good as plating on a complete alloy cylinder. ie no iron sleeve.

[peewee]

these are reproductions. not near the qaulity of yamaha oem but theyre a fraction of the price. $300 for 2 new sets of cylinders ( 2 lefts and 2 rights). ill be plating the sleeve once all the work is done. thinking the casting will pull away from the sleeve because a while back when i tried that brazing rod i noticed some pull back in a few areas. maybe they will react different with welding as there isnt a constant 700F temp as with the brazing rod

[Grumph]

these are reproductions. not near the qaulity of yamaha oem but theyre a fraction of the price. $300 for 2 new sets of cylinders ( 2 lefts and 2 rights). ill be plating the sleeve once all the work is done. thinking the casting will pull away from the sleeve because a while back when i tried that brazing rod i noticed some pull back in a few areas. maybe they will react different with welding as there isnt a constant 700F temp as with the brazing rod

The older aircooled yam iron liners were plain parallel shrink fit. Certainly up to the RD350. If the repro barrels are that cheap, i'd put money on them being the same as it's the cheapest way. Pre heat - plenty of preheat, with the liner clamped in so it doesn't move. Good luck...

[Grumph]

Yes - i have enough to get me into trouble for quite some time.

The trouble is that when ever I think i know what I want to do some sod goes and posts more information on this thread and i have to change what i thought I was going to do !!!

So now you're hamstrung, waiting to see how much of the Ryger you can use ?.....

My excuse is much simpler, i have 2 kawa rotary valve motors here plus 2 RG400 barrels - and i can't be arsed walking through snow to the workshop. plus too much customer stuff here as well.

[husaberg]

The older aircooled yam iron liners were plain parallel shrink fit. Certainly up to the RD350. If the repro barrels are that cheap, i'd put money on them being the same as it's the cheapest way. Pre heat - plenty of preheat, with the liner clamped in so it doesn't move. Good luck...

Well I am confused because I think that is where I first seen them, Pretty sure the Hondas are the same?

[F5 Dave]

anybody welded on a iron sleeved cylinder ? got some of those reproduction yamaha cylinders i was going to add some aux exh ports but im thinking the casting will pull away from the sleeve. maybe its best to cut out the sleeve with a lathe or something and install a new one afterwards ?

Yes by a, sort of mate who thought he could weld. OK maybe I'm still bitter from 20yrs ago about a virgin barrel being fecked. First iteration where we didn't get near the liner was ok. But the water jacket leaked into the exhaust. After that it went downhill & was separating liner to ally. Just slightly, but if you can see it- its a mile.

[twotempi]

frits your a great help but i dont understand your 8.1% corner radius. i only know radiuses in mm.

tz350 what is a damn ? is it just a term for filling in the exh floor like me and wobbly are doing ?

A reminder that the European convention for decimals is that a decimal place is a comma , not a full stop.

[Grumph]

Well I am confused because I think that is where I first seen them, Pretty sure the Hondas are the same?

don't know at what point or which model they changed. i do remember you could resleeve the 400 barrels out bigger - couple of Brit outfits would do it.

[Frits Overmars]

A reminder that the European convention for decimals is that a decimal place is a comma , not a full stop.

You don't need to remind me, Twotempi. My original drawing had commas; I adapted it just for you guys. And may I remind you that the use of decimal commas is not a european, but a world-wide convention? But some people keep hanging on to the foot-pound-fortnight system and I was foolish enough to oblige.

[Frits Overmars]

[F5 Dave]

Really? `cause we arent too enamoured with the French (and their state sanctioned terrorist activities) here but I do like the SI system and Michelin tyres. I didn't know about the coma thing being that widespread.

[husaberg]

Really? `cause we arent too enamoured with the French (and their state sanctioned terrorist activities) here but I do like the SI system and Michelin tyres. I didn't know about the coma thing being that widespread.

Dave you are being unfair, they also gave us passable wines, taught us how to do amazing things with fried potatoes and a reason to protect our scrotums in Rugby.
On the plus side of the ledger they did produce this cheeky little number.