ESE's works engine tuner

[speedpro]

Pity you couldn't make that header a single larger radius curve. Long as it works I suppose. Projected hp?? Or does the "work better" comment refer to spread of power?

A 2-stroke better win this year.

[F5 Dave]

Yeah, but just to upset you it may come from the south. Far South.

[Buckets4Me]

Yeah, but just to upset you it may come from the south. Far South.

or Nigel may get his bike to hold together for longer than 3 laps

[Yow Ling]

or Nigel may get his bike to hold together for longer than 3 laps

Sounds like a cry for help to me. A diesel will take it again

[Buckets4Me]

Sounds like a cry for help to me. A diesel will take it again

if the rider dosent end on his head AGAIN!

[F5 Dave]

or Nigel may get his bike to hold together for longer than 3 laps

Actually I have a feeling he has cured a long standing problem & yeah my money would be on him if all is well. But stiff competition is appearing.

[TZ350]

Projected hp?? Or does the "work better" comment refer to spread of power?

Deliberately ambiguous so we don’t have to be bored by someone fixating on a detail and making a grand case out of it………

In simple terms, and omitting a lot of peripheral detail, at the moment I have a cylinder with an exhaust port opening 86.5 degrees ATDC and an RS125 pipe making about 21rwhp at 9,500rpm with good over rev.

Motoa suggests the RS pipe + 40mm in the mid section would be better suited to a cyl with an exhaust opening 80 deg ATDC and would show an improvement in hp with much the same spread.

And the new pipe and old cyl with the exhaust opening 86.5 would out perform both, in spread and hp but would not work at all well with an exhaust opening 80 deg ATDC.

Its that, Motoa suggests the new pipe will be really good with 86.5 and very poor at 80 that interests me, it will be interesting to see how that plays out and if the dyno torque curve is anything like what Motoa predicted.

[SS90]

Its that, Motoa suggests the new pipe will be really good with 86.5 and very poor at 80 that interests me, it will be interesting to see how this plays out on a dyno.

Have you worked out the time area difference with having the port open 86.5 deg compared to 80 Deg?, or are you using the same time areas just with different port widths to keep the time area the same regardless of duration?

[aircooled]

cone 1 285mm + 55 mm, seems to be a long header pipe or is it part of the 1st diffuser?

[TZ350]

cone 1 285mm + 55 mm, seems to be a long header pipe or is it part of the 1st diffuser?

I was thinking of it as a 3 stage diffuser. With the 1st stage diffuser cone as 285mm long +55mm in the exhaust port tract.

Its a bit philosophical, 2 or 3 stage, because at what divergent angle does a header pipe become a diffuser......

Not sure what others might call it, as you could say it is a 2 stage with a tapered header.........

[TZ350]

.

Bucketracer, cutting the chamber shapes out, cleaning the paper templates off, rolling the sections up and most of the finished sections ready for welding. There is one section left to make, the template can be seen in the left hand side of pic-04

What interests me, is to see if the boys can develop a chamber by just using an engine simulation package like MOTA.

[TZ350]

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The things that can trip you up, Bucket and I reconditioned some really excellent forks. We didn’t mix and match anything and used all the essential original parts and when I fitted them to the bike the axel holes don’t line up…….......WTF

[Henk]

Probaby find they are a bit bent. Turn the staunchions a few times and you might find they line up. Did that with the seriously shot forks on my FXR when I bought it. Two man partner rode the race not knowing the forks were toast so it might not be that bad.

[aircooled]

Damn! damper rod springs or rods same length?

[bucketracer]

Damn! damper rod springs or rods same length?

This is where we expect the problem is, so they will have to come apart again.......