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Old 02-02-2007, 09:14 AM   #1
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Default Team Orionís Constant Pressure Device (CPD)

Hey guys what do think about this

Team Orion have shown this unique and rather innovative regulated constant pressure device (CPD) on their stand at this weekís show in Germany. Created to solve engine tuning problems that arise when you switch from full throttle to low speed.
High pressure generated from running at full throttle is still present and it is pushing fuel to the carburetor inlet even though the carburetor is closed, because of this the mixture will become too rich, causing slower acceleration and wasting fuel.
This device that goes in the pressure line between the pipe and tank solves that.

http://www.redrc.net/2007/02/team-or...essure-device/


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Old 02-02-2007, 09:49 AM   #2
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Is this some type of one way adjustable (red knob) pressure value, that opens when the PSI reaches a certain level? i.e. when the exhaust pressure reaches a certain value, it opens, thus relieving the pressure in the carburetor.

Interesting...

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Old 02-02-2007, 10:09 AM   #3
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Quote:
Originally Posted by rmdhawaii
Is this some type of one way adjustable (red knob) pressure value, that opens when the PSI reaches a certain level? i.e. when the exhaust pressure reaches a certain value, it opens, thus relieving the pressure in the carburetor.

Interesting...

Very interesting......

The pressure given by the pipe varies along the rpm's the engine is turning, so at lower speeds you have lower pressure and at high speed you have higher pressure.
The way I isee it, this device is meant to avoid those drastic pressure variations from high speed to idle....you regulate the red knob to an ideal position (more or less pressure from the pipe) and the rubber diapraghm will maintain a constant pressure independent of the rpm's.

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Old 02-02-2007, 10:17 AM   #4
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But wouldn't that mean that you're changing the pressure in the pipe as well - or would that just get vented through the stinger? Just wondering if at full-throttle, you would have to worry about excess pressure build up in the pipe.
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Old 02-02-2007, 10:25 AM   #5
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Quote:
Originally Posted by rmdhawaii
But wouldn't that mean that you're changing the pressure in the pipe as well - or would that just get vented through the stinger? Just wondering if at full-throttle, you would have to worry about excess pressure build up in the pipe.
You are right it will just vent through the stinger...no excess build up, pressure will find it's way out through the next free hole (stinger)

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Old 02-02-2007, 10:44 AM   #6
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All you need now, is a miniature max pressure gauge (i.e. stays stuck at the max pressure until reset), to ensure that you don't induce a problem of under pressurization. Run a few laps, check the gauge and you're all good.
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Old 02-02-2007, 11:51 AM   #7
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It would cut down on fuel airation and momentary richness when backing of the throttle.Better fuel milage ,more consistent tune ,can definately see the plusses Question is going to be how reliable its going to be.
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Old 02-03-2007, 12:44 AM   #8
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RC FORUM has updated great pictures of Team Orionís Constant Pressure Device (CPD) from Toy Fair.

http://rcforum.co.kr/


We are currently adding more pictures now untill Toy Fair finishes.
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Old 02-03-2007, 02:27 AM   #9
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Default Mugen Boost Bottle????

Help me out???? Is this a fancy version of the Mugen Boost Bottle? How does it differ from the mugen bottle besides being adjustable.
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Old 02-03-2007, 03:05 AM   #10
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it supposed to keep the presure more constant...........

the mugen boost or similar just reduces the pressure due to the increased volume of the pressure line, which means when the engine runs at low rpm, it always tends to be lean due to the very low pressure through the line and that's why you achieve better milleage (that very last lap at 04:50min in 1:8 class ), because the engine is leaner at low rpm and the carburation is more crictical.........

with the orion device you should have a constant pressure no matter the rpm range...........

interesting, but honestly it sounds marketing for me because our engines had worked so well without anything like that, so i don't expect any relevant difference using this device or something alike........
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Old 02-04-2007, 12:41 AM   #11
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I know that my father and BK (MXWrench) were working on a similar device some 8-9 months ago.

While there were huge speed improvements, there were drawbacks.

In the end, the improvements did not outweight the drawbacks.

I know the drawback had to do with old fuel blocking the device from performing properly.

I just remember this device being in my car and it had times when it was crazy fast and times when it would just stale my engine. Very unpredictable.

Just my .02
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Old 02-04-2007, 01:54 AM   #12
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Quote:
Originally Posted by STICKS
I know the drawback had to do with old fuel blocking the device from performing properly.
I can see where this could be a problem. If the device were only designed for air pressure, then any fuel going up the tubing could potentially cause a problem.

Was the engine stalling at low-speed or high-speed?

Perhaps a fuel filter prior to the device, would be sufficient to trap any old fuel - and/or make the tubing a bit longer on the pipe side. Building it into the fuel cap would also be a viable option - but it would have to be very lightweight or recessed into the cap to prevent from adding weight up top.

Crazy fast huh? Hmmmmm...
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Old 02-05-2007, 11:17 PM   #13
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Quote:
Originally Posted by STICKS
I know that my father and BK (MXWrench) were working on a similar device some 8-9 months ago.

While there were huge speed improvements, there were drawbacks.

In the end, the improvements did not outweight the drawbacks.

I know the drawback had to do with old fuel blocking the device from performing properly.

I just remember this device being in my car and it had times when it was crazy fast and times when it would just stale my engine. Very unpredictable.

Just my .02
Don't give away all my secrets, I am still working on this device. It has some huge potential, but it needs some refinement for sure!

By the way, our device is not a constant pressure device. And is extremely different than the Orion device.

The Orion device should be good to normalize fuel settings, but I am not so sure it will generate more power as ours does.

Time will tell, hopefully they will send me one soon to test on the dyno!

BK
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Old 02-06-2007, 12:55 AM   #14
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Good thing he didn't spill the beans about what you're actually working on! Got to watch that intellectual property BK. One slip of the lip and someone else is making the big bucks instead of the both of you!
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