Anyone else find Smiffy's posts hard to read while bouncing up and down in the chair?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
RB20 (200cc) - Pictures and Spec
- corrado
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yes he did say so in the scootering interveiwRinB 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
Its in bits scooter club: www.facebook.com/groups/132415046859320
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
- jason frost
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Here you go but i will be making a new one to go ith the V Force reedRinB 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
you've got my attention Smithy, having a look and a good report on the rb25 is what im waiting for.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
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Looks and sounds amazing. What about the wall thickness on the spigot taken to 66mm, must be well-thin?
Muffspeed....no muff too tuff
Bad Samaritans SC
1957 Zundapp Betta 500 Auto
1966 Motovespa Sprint 210 Polossi
1960 Lambretta Cutdown 205 Project
Bad Samaritans SC
1957 Zundapp Betta 500 Auto
1966 Motovespa Sprint 210 Polossi
1960 Lambretta Cutdown 205 Project
i fink its about £390 retail ?????? this one i got today but i am a dealer for af soBofs wrote:Looks and sounds amazing. What about the wall thickness on the spigot taken to 66mm, must be well-thin?
whats ther in the full kit
you get all whats ther in the kit
nice one
Its in bits scooter club: www.facebook.com/groups/132415046859320