Re: prop construction

From: Nick Ray <lasray_at_gmail.com>
Date: Tue, 16 Jun 2009 21:40:55 -0400

I agree with Bill, also, it is much easier to test for deflection one half
the of the spar at a time. So long as it comes out strait you can make the
hub about anyway that you like. If you layer wood you have to be careful so
that the glue doesn't contract and warp the hub causing your spars to look V
shape. The key to make everything as strait as possible.

On Tue, Jun 16, 2009 at 9:57 AM, Bill Gowen <b.gowen_at_comcast.net> wrote:

>
>
> As far as I know tissue tube hubs are legal for all classes and are a
> good choice. As I've said many times I never build props with a one piece
> spar. I'll take the weight gain of an extra piece of wood at the center or a
> tissue tube over the difficulty of making a spar in one piece.
>
>
> ----- Original Message -----
> *From:* barrysholder <barry_at_signandart.com>
> *To:* Indoor_Construction_at_yahoogroups.com
> *Sent:* Tuesday, June 16, 2009 9:29 AM
> *Subject:* [Indoor_Construction] prop construction
>
> I know this has been addressed many time but.. on duration models, is it
> common to make prop hubs out of tissue tubes to set blades one at a time
> rather than one long spar. I know I have seen plans to make two spars then
> glue them together and then set the blades on. Also on balsa hubs I have
> seen where you stack pieces then run your wire prop shaft thru both and make
> a right angle with the shaft and glue. Is that OK?
>
> ------------------------------
>
>
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 8.5.339 / Virus Database: 270.12.73/2180 - Release Date: 06/16/09
> 07:41:00
>
>
>
Received on Tue Jun 16 2009 - 18:41:57 CEST