Yah, it's definately wierd ! Spars look fine
LeRoy Cordes
AMA 16974
Chicago, IL
In God We Trust
On Sat, 17 Nov 2007 07:42:59 -0500 "Bill Gowen" <b.gowen_at_earthlink.net>
writes:
> I've never had anything like that happen. The only thing I can think
> of is that the prop spars warped in storage. If that's what happened
> then you might be able to twist them back to the pitch that you
> want.
>
> ----- Original Message -----
> From: LeRoy C Cordes
> To: Indoor_Construction_at_yahoogroups.com
> Sent: Friday, November 16, 2007 1:30 PM
> Subject: [Indoor_Construction] LPP Prop Problem
>
>
> I have a problem ! When I started in LPP a year, or so, ago I made
> up 3
> props following Cezar Banks' LPP Plan. They are all made to 22
> degree
> pitch with a hardwood hub and balsa blades glued with thinned
> Ambroid. I
> flew on all these props all season and they were Ok to good. This
> fall
> when I opened my indoor containers I found a puzzle - the first
> prop,
> which had very soft balsa blades to which I had added a rib at the
> ends
> of the prop hub (because the prop was flaring too much), the
> blades had
> somehow moved on the hub to where they are parallel to the prop
> shaft
> wire (90 degrees to the direction of flight). The second and third
> props
> were still flyable but one of the blades on each prop was way off
> pitch
> having rotated 10 or 15 degrees in the direction of prop number 1
> ???????
>
> I've now made a 4th prop and I don't want this to happen again -
> any
> ideas what caused this to happen ? They have all been stored with
> the
> prop hubs horizontal captured in a piece of foam thad didn't touch
> the
> blades and didn't allow the blades to touch anything else. They
> were
> stored in realtively sealed plastic storage boxes that also
> contain my
> models.
>
> Appreciate any help
>
> LeRoy Cordes
> AMA 16974
> Chicago, IL
> In God We Trust
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
LeRoy Cordes
AMA 16974
Chicago, IL
In God We Trust
Received on Mon Nov 19 2007 - 05:34:53 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:45 CET