Page 4 of 9
Re: RB20 (200cc) - Pictures and Spec
Posted: Sun Jan 11, 2009 10:36 pm
by corrado
RinB wrote:The reason being that as the exhaust cracks opens the initial blow down doesnt go out of the port straight but at an angle of say 40-60deg then as the port opens it straightens towards the 10-15deg.
So to help that first pulse flow without hitting the opposing exh pipe side wall the ports are angled.
I believe this is the one major thing Terry shepherd wished he had done with the TS1 barrel
Smiffy
Anyone else find Smiffy's posts hard to read while bouncing up and down in the chair?
Re: RB20 (200cc) - Pictures and Spec
Posted: Sun Jan 11, 2009 10:42 pm
by RinB
Re: RB20 (200cc) - Pictures and Spec
Posted: Sun Jan 11, 2009 11:58 pm
by RICSPEED
RinB wrote:The reason being that as the exhaust cracks opens the initial blow down doesnt go out of the port straight but at an angle of say 40-60deg then as the port opens it straightens towards the 10-15deg.
So to help that first pulse flow without hitting the opposing exh pipe side wall the ports are angled.
I believe this is the one major thing Terry shepherd wished he had done with the TS1 barrel
Smiffy
yes he did say so in the scootering interveiw
Re: RB20 (200cc) - Pictures and Spec
Posted: Mon Jan 12, 2009 10:42 am
by fishi
Powolotti wrote:brilliant documentation Dan
this boostport thing...dunno
Can we expect Airsal to have a flowbench where they test prototype cylinders? Or is it just a "here´s too small, add something here" approach?
Yes, they have a flowbench, you can truste me.
fishi
Re: RB20 (200cc) - Pictures and Spec
Posted: Mon Jan 12, 2009 3:10 pm
by jason frost
RinB wrote:
As for the manifold definately weld it up and reshape without any hesitation ,Ill put some pics on here later. But I think Jason has already shown this.on old forum
Here you go
but i will be making a new one to go ith the V Force reed
Re: RB20 (200cc) - Pictures and Spec
Posted: Mon Jan 12, 2009 3:16 pm
by DMC
RinB wrote:Dan good report m8
Definately intreged about the 3 three finger boost port I believe the rb250 has the same port but still keeps the bridge
Exhaust ports.
Watch this space as I will hopefully have one on the table next weekend, & Ill do a report on the RB250 as you have done Dan.
Word of WARNINING if stroking the RB's watch the boost port fingers ,as the bottom ring can catch under the finger in the port . Make sure you check this
As for the manifold definately weld it up and reshape without any hesitation ,Ill put some pics on here later. But I think Jason has already shown this.on old forum
Also I will show what I have done to a RB225 once its finnished, you have seen some photo's but they are I can asure you work un-finnished
Smiffy
you've got my attention Smithy, having a look and a good report on the rb25 is what im waiting for.
Re: RB20 (200cc) - Pictures and Spec
Posted: Wed Jan 14, 2009 12:55 am
by cranky
What is the total cost of the full kit ?
Or can it be purchased as individual items ?
Re: RB20 (200cc) - Pictures and Spec
Posted: Wed Jan 14, 2009 11:13 am
by Bofs
Looks and sounds amazing. What about the wall thickness on the spigot taken to 66mm, must be well-thin?
Re: RB20 (200cc) - Pictures and Spec
Posted: Wed Jan 14, 2009 9:04 pm
by fattspeed
Bofs wrote:Looks and sounds amazing. What about the wall thickness on the spigot taken to 66mm, must be well-thin?
i fink its about £390 retail ?????? this one i got today but i am a dealer for af so
whats ther in the full kit
you get all whats ther in the kit
Re: RB20 (200cc) - Pictures and Spec
Posted: Wed Jan 14, 2009 9:13 pm
by RICSPEED
nice one
