lml@lancaironline.net Mailing List Archive

My numbers are similar to what has been stated.
In my 235/320 I am running injected with electronic ignition and MT 3 blade, best speed for me is at 8000 in cool smooth air 2750 rpm yields198-200 knots TAS depending on the day. Never seen over 200. Burn is 9 GPH rich of peak. This is with the new MT with the schimitar blades. I had the straight blades ( until I broke it) and the best I could get with that propeller was 196 knots TAS never faster. The new prop got me another 4 knots (they predicted 5) .
I believe the bottom of the 235 wing has more curve at the rear lower airfoil giving it a slightly down flap effect. Don Goetz told me one day this was done in an attempt to give the wing better low speed characteristics. I am amazed at how much the airplane speeds up with the flaps in reflex. 15 knots or so on mine..
It looks to me like the 320/360 wing has the same shape but to a lesser degree resulting in slightly less drag...

Randy Snarr
235/320
N694RS

--- On Tue, 3/23/10, Lorn H Olsen <lorn@dynacomm.us> wrote:

From: Lorn H Olsen <lorn@dynacomm.us>
Subject: [LML] Re: Lancair 235
To: lml@lancaironline.net
Date: Tuesday, March 23, 2010, 6:09 AM

Terrence,

I don't know for sure. Here are some possibilities.

1) I could just be wrong.
2) Reports from 235/320 owners that I have spoken to could understate the speed.
3) Reports on the 320 from the factory could overstate the speed.
4) The rectangular cowling on the 235/320 could make a difference.

How fast does your 235/320 cruise at 8 gph.

Lorn

> From: Terrence O'Neill <troneill@charter.net>
> Date: March 22, 2010 12:00:17 PM EDT
> To: lml@lancaironline.net
> Subject: Re: [LML] Re: Lancair 235
>
>
> Lorn,
> Quick question: why is the 320 some 15 knots faster than the 235 w/ 320 engine with less wetted area (slightly smaller fuselage)?
> Terrence (w/ 235 w/ 320 engine) N211AL

--
Lorn H. 'Feathers' Olsen, MAA, ASMEL, ASES, Comm, Inst
DynaComm, Corp., 248-345-0500, mailto:lorn@dynacomm.us
LNC2, FB90/92, O-320-D1F, 1,700 hrs, N31161, Y47, SE Michigan

--
For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html