Re: F1D propellers for Cat I

From: Mark F1diddler <f1diddler_at_yahoo.com>
Date: Sat, 19 Jan 2013 17:25:13 -0000

--- In Indoor_Construction_at_yahoogroups.com, "Yuan Kang Lee" wrote:

<<Can you share your motor information: length, turns in, turns remaining?

Sure, although I may not be able to find my actual flying notes from 2008 (give me a few days.) I usually only write things down after a great flight, or where I try something different that works. Otherwise, I would be writing all day instead of flying.

For the 2008 17.6" prop, motor was 8.4". Turns count I don't exactly recall, but with F1d back then I was always trying to launch at what I thought was maximum turns, or .51 in-oz, whichever came first. Today I may back off to around .42 in/oz, which can happen with only 3 or 4 turns back off, or may just spontaneously drop. (5/99 rubber.) Turns remaining was about 10 IIRC, but I've had a couple 27s with up to 175 turns remaining. I'm happy with anything less than about 100 remaining. But of course, 0 would be a good number, too.
 

>
> That's very interesting. 20 or 22" is really low pitch. I flew my 26;50 using a 19.25" prop with 24" LP>>

Yep, that illustrates why I deemphasize worrying about any one data point from another flyer without first understanding the more systemic goal of what he's doing. And after I DO understand the overall choices of a flyer's style, at that point I may no longer need to copy anything, unless my locus of choices have been completely failing. Usually, there's a way to better optimize what I'm already trying to do. For example, although I've always been interested in ezb (off and on) I still have no idea about any of the data about your Cat IV record ezb, except that it weighed .24g. I could ask you, or I could subscribe to NFFS digest. But I already know how my ezb flying can improve if it's important--such as go to more than one contest per year. So far, circumstances have always pointed to some area where I can improve. Seems there's never a lack of good indoor information, given that ethic.
MB
 
Received on Sat Jan 19 2013 - 09:25:14 CET