Freestyle new rrp carbon pipe

Brian_216

Brian_216

Location
Harveys Lake PA
I have one in the works as well. Not pfp style... Using polyamide resin to withstand heat. I think the real trick to making power on one of these will be water injection control. Run it wet up to a selected rpm and cut the flow off. For a freestyle application I don't see the rpms staying that high for a long enough period of time to damage the pipe if it's made from the right materials. Another thing that's been brought up was most of these chambers were designed years before large cc engines we have today. (PFP is pretty much a type 9 chamber laid flat?). Has anyone put the r&d into making the chamber the right dimensions to suit the 1000cc plus engines? Sure they work, but that's only because everyone was forced to work with what they have due to lack of options. How much more power can be had??
 
yamanube

yamanube

This Is The Way
Staff member
Location
Mandalor
Brian_216 said:
I have one in the works as well. Not pfp style... Using polyamide resin to withstand heat. I think the real trick to making power on one of these will be water injection control. Run it wet up to a selected rpm and cut the flow off. For a freestyle application I don't see the rpms staying that high for a long enough period of time to damage the pipe if it's made from the right materials. Another thing that's been brought up was most of these chambers were designed years before large cc engines we have today. (PFP is pretty much a type 9 chamber laid flat?). Has anyone put the r&d into making the chamber the right dimensions to suit the 1000cc plus engines? Sure they work, but that's only because everyone was forced to work with what they have due to lack of options. How much more power can be had??
Click to expand...
The people who are really serious about creating a completely new exhaust system should spend the extra time/money to put some numbers into a two stroke expansion chamber design software just to get a reference in relation to existing designs. Without any kind of R&D it's a shot in the dark based on somebody elses design (ie copying).
Building one pipe, testing, revising and ending up with better performance than the previous model and ending with that is not R&D, that is trial and error.
 
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Brian_216

Brian_216

Location
Harveys Lake PA
McDog said:
We may have reached the point where the ideal chamber for a huge motor won't fit in a standup hull.
Click to expand...

It's going to have to go back to the up and over style, run the added chamber size up in the nose and a water box off to the side like pfp to get the size needed in there. Then comes the issue of hood clearance! Start fresh, get a pipe that will work then build a hull around it. Or we stick with the kool aid we are given. Sometimes the only way to progress is to be willing to change with the times.
 
McDog

McDog

Other Administrator
Staff member
Location
South Florida
From the amplitude of the pros at world's I would say lack of power isnt an issue. I would hate to see hull design suffer because of a need to accomodate a different pipe. Maybe you could get best of both worlds but I would expect it more likely for a compromise to be needed either with pipe shape or hull.
 
Twinturbostang

Twinturbostang

Location
CT
This is the magic water setup.
ysyjudez.jpg
 
CARBONX2

CARBONX2

Location
South Africa
How about another chamber for the Rad Dudes manifold/header as the fllow in PFP/RRP manifolds favour the rear cylinder? Kawi Dry manifold is balanced flow but too small on the ID at the flange
 
yamanube

yamanube

This Is The Way
Staff member
Location
Mandalor
I think it is a Motoine Kawasaki pipe, but I can't seem to find any info on it. I found this one as well.


MR-SXR015.jpg
 
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masterblaster

masterblaster

X-H2
The 2 stroke sofetware I posted the link to is inexpensive and great starting point,I dont think anyone in this business is smarter than the math involved in that equation of design .Im sure hiro used something sim to come up with this new rrp dry pipe. Some of you guys that are already doing well with composites have a big advantage in carbon pipes. mock ups can be done very cheaply and tested. Skip the billet mani and keep it cheap,there are 2 casting companies out there that still own the rights to the cast manifold and can be produced very affordable.

Brian..water is deff the MOST important thing in these huge pipes to get them in the power band quickly,in my other post i was talking about developing the design im working on that is something sim to a reverse jetworks valve that cuts the water off at certain pressure,water pressure relates to rpm pretty closely,but avoids all the elecs and solenoid clutter that fail. the water injection would run most all the time and keep the pipe cool,cut off only as top end power of the motor comes in,and allow the pipe to keep pulling further into the rpms.

Really like that up and over pipe,the longer front diffuser would be better suited to getting rpms quicker without high comp race..what that cost you?
 
W

waxhead

wannabe backflipper
Location
gold coast
This is also a good one I have used it to make single cylinder pipes before. http://underdogsracing.com/fospipe/
Im not sure if the twin cylinders need different calcs for two cylinders going into one pipe. Thats the main reason I have not tried to play with my own pipe for a jetski
 
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