wrote: Rusty, Those sizes are what Jerry is running for his PP and should be fine = i.e. 2 of them. George ( down under)=20 Hi Tom, I can't say I understand it, but maybe Ken or someone will jump in = and bail me out. I gave up on the idea of using an Ellison when I = realized that the EFS-4-5 (180-225 HP) model only has a 1-7/8" bore. = I've been worried that I was on the verge of choking my 13B with "only" = 1-5/8" bores for each rotor. Now I suppose you could connect the = runners for both rotors together at a common plenum, and feed it with a = single1-7/8" bore since both rotors aren't requiring a huge airflow at = the same time. That seems like it should work, and I'd love to see = someone try it. Just hard to step back from true fuel injection. =20 Cheers, Rusty =20 -------------------------------------------------------------------------= ----- Do you Yahoo!? Yahoo! Mail - 250MB free storage. Do more. Manage less. ------=_NextPart_000_005A_01C50EBE.D96D9620 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Tom,

I don't know the system and I guess = until it's=20 tried we won't know for sure.

What I do know is that 1.5 to 1.6 = manifold tube is=20 OK for each rotor. If the Ellison can feed both inlets, is something I = don't=20 know.

George

Thanks Rusty,

1 7/8 sure sounds small to me, as did the diameter of the first = couple=20 versions of ED's new muffler. But then you can't depend on = what I=20 think of these diameters. Yes, connecting the runners = together=20 into a common plenum and fed by one Ellison was what I was thinking=20 since the mixture is being drawn into only one chamber at a = time. =20 And having to buy 2 Ellisons would probably be a 'no go' for me. =

George, you're saying one at 1 7/8 bore is not adequate for = one=20 combustion chamber, that it would take two to support each = combustion=20 chamber?

Tom, my air-pump a Renesis.

George Lendich <lendich@optusnet.com.au>=20 wrote:

Rusty,

Those sizes are what Jerry is = running for his=20 PP and should be fine i.e.

2 of them.

George ( down under)

Hi=20 Tom,

I can't=20 say I understand it, but maybe Ken or someone will jump in and = bail me=20 out. I gave up on the idea of using an Ellison when I = realized that=20 the EFS-4-5 (180-225 HP) model only has a 1-7/8" bore. I've = been=20 worried that I was on the verge of choking my 13B with "only" = 1-5/8" bores=20 for each rotor. Now I suppose you could connect the = runners for=20 both rotors together at a common plenum, and feed it with a=20 single1-7/8" bore since both rotors aren't requiring a huge = airflow=20 at the same time. That seems like it should work, and = I'd love=20 to see someone try it. Just hard to step back from true fuel = injection.

Cheers,

Rusty=20

Do you Yahoo!?
Yahoo! Mail - 250MB free storage. Do=20 more. Manage less. ------=_NextPart_000_005A_01C50EBE.D96D9620--