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From: david mccandless <daval@iprimus.com.au>
Subject: Re: [FlyRotary] Re: Carbs
Date: Sat, 21 Jul 2007 03:22:56 +0800
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>


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On 20, Jul , at 3:53 PM, George Lendich wrote:

> Bill /Lynn/ David.
> I had a look at the Revmaster Revflow Injector carb, flat slide 
> throttle- anything wrong with this unit?
> George ( down under)
>
G, L , B, int al
the Revmaster is a fine piece, but they were engineered for VW based 
engines; so the biggest size available is 40mm. When fitted to the 
Jabiru 6,
the engine puts out 4-5hp more than with the Bing CD; about 127 hp@ 
3300. We spoke to Jab about this and they were non committal in that 
they
said; "maybe so, but since the engine spends most of its life at 
2700-2800, why mess with the proven Bing CD?"   I had no answer to this 
common sense!
IIRC, the Revmaster requires about 2 psi fuel head, I have seen 
applications on high wing airplanes with no fuel pump, and low wing 
jobs
  with Facet pumps and Holley pressure regulators. This makes a good 
airbatic system, a friend uses it on a BD5. (Honda Accura)
I thought about using the 45/48mm Mikuni flat slide carb and replacing 
the float bowl with a Revmaster type metering unit and thereby
ending up with a low pressure FI. With Lynn's inlet tube ideas it seems 
easy to build for a Pport.     Not unlike what Paul L is doing with his 
LP slide throttle injection; I like the simple leaning function by 
varying the fuel pressure. Paul expects to test it soon with RX8 
housings and Pports.
So many good ideas, and still no airplane, only parts!
Dave McC


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On 20, Jul , at 3:53 PM, George Lendich wrote:


<excerpt><smaller>Bill /Lynn/ David.</smaller>

<smaller>I had a look at the Revmaster Revflow Injector carb, flat
slide throttle- anything wrong with this unit?</smaller>

<smaller>George ( down under)</smaller>


</excerpt>G, L , B, int al

the Revmaster is a fine piece, but they were engineered for VW based
engines; so the biggest size available is 40mm. When fitted to the
Jabiru 6,

the engine puts out 4-5hp more than with the Bing CD; about 127 hp@
3300. We spoke to Jab about this and they were non committal in that
they

said; "maybe so, but since the engine spends most of its life at
2700-2800, why mess with the proven Bing CD?"   I had no answer to
this common sense!

IIRC, the Revmaster requires about 2 psi fuel head, I have seen
applications on high wing airplanes with no fuel pump, and low wing
jobs

 with Facet pumps and Holley pressure regulators. This makes a good
airbatic system, a friend uses it on a BD5. (Honda Accura)

I thought about using the 45/48mm Mikuni flat slide carb and replacing
the float bowl with a Revmaster type metering unit and thereby

ending up with a low pressure FI. With Lynn's inlet tube ideas it
seems easy to build for a Pport.     Not unlike what Paul L is doing
with his LP slide throttle injection; I like the simple leaning
function by varying the fuel pressure. Paul expects to test it soon
with RX8 housings and Pports.

So many good ideas, and still no airplane, only parts!

Dave McC 


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