Thanks for sharing your insight in this Tapio.
Now I wonder what is the best knot for the tiny 0.4g rubber? And when do
you do the knot in regards to the lubrication?
Edmund
*Edmund Liem*
tmj-sleep.ca
aacpcanada.org
On Wed, Dec 20, 2017 at 11:36 AM, Tapio Linkosalo tapio.linkosalo_at_iki.fi
[Indoor_Construction] <Indoor_Construction_at_yahoogroups.com> wrote:
>
>
>
> The silicone viscosity seems to affect a bit the lubrication
> "efficiency". I have been lubing my F1B motors for quite some time with
> thick (12500 to 14000cTs) silicone. I use a knot that is tied to a lubed
> rubber strip, as the knot would cut through unlubed strip. I have found
> some problems with my knots slipping during motor break-in (by
> stretching) when I have tied the knot to motor lubed with said silicone.
> When I use thinner (500cTs) silicone to first lube the motor ends for
> tying the knot, then use thicker for lubing the rest of the motor, the
> knots hold better. My hypothesis is that the thinner silicone lubes the
> knot until it is really tight, but then in the end the knot cuts through
> the silicone and grabs. Thicker silicone lubes a tighter knot and
> prevents it from grabbing. Thus I conclude that thicker silicone lubes
> better.
>
> -Tapio-
>
> On 20/12/2017 16:41, leop_at_lyradev.com [Indoor_Construction] wrote:
> > FAI Model Supply sells silicone oil in a low and a high viscosity
> > grade. The low is 500 cSt and the high is 5000 cSt. I have been
> > using the 5000 cSt oil for all classes since I started out over ten
> > years ago. Many indoor fliers today use the thinner 500 cSt but this
> > is more a matter of personal preference. In practical terms, the
> > difference in viscosity between 5000 cSt and 500 cSt is the difference
> > between the viscosity of SAE 50 motor oil at 32F and 70F. Note that
> > silicone oil does not show such a viscosity change with temperature.
>
>
>
Received on Wed Dec 20 2017 - 19:43:46 CET
This archive was generated by Yannick on Sat Dec 14 2019 - 19:13:49 CET