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Sentry Siren port ratios
Posted: Thu Nov 05, 2020 3:13 pm
by NottaFoamer
Hello all! I am trying to find all the port ratios for all the Sentry Sirens.
List of ones I want the ports for
3V8
3V8-H
7V8
10V
10V2T
15V2T
20V1T
14V
16V1T
40V2T
Thanks!
Re: Sentry Siren port ratios
Posted: Thu Nov 05, 2020 3:32 pm
by CD_Siren
3V8 - 8
3V8-H - 8
7V8 - 8
10V - 8
10V2T - 8/16
15V2T - 8/16
20V1T - 8/8
14V - 10
16V1T - 8/8
40V2T - 10/15 (Likely)
Re: Sentry Siren port ratios
Posted: Thu Nov 05, 2020 3:33 pm
by NottaFoamer
Thank you very much!
Re: Sentry Siren port ratios
Posted: Thu Nov 05, 2020 5:38 pm
by SirensOfNewYork
Interestingly enough you can order some Sentry sirens with custom port ratios. This 10V has 16 ports.
https://www.youtube.com/watch?v=Mm0m3wPQKqw
Re: Sentry Siren port ratios
Posted: Thu Nov 05, 2020 5:41 pm
by Chicagosiren-hunters
It should also be mentioned that most of these sirens can be ordered with custom ratios. A few 16-port 5V's and even a 10V have been found in the wild. So theoretically any siren can have either 8, 16, or have both choppers be the same.
Also, Huntsville, AL has a 40V1T, with 2 10-port rotors. Theoretically, one could be ordered with 2 15-port rotors as well.
Re: Sentry Siren port ratios
Posted: Thu Nov 05, 2020 5:45 pm
by NottaFoamer
Oh wow thank for all the info I never knew they could come in different ratios other then 16 port on the 5V!
Re: Sentry Siren port ratios
Posted: Thu Nov 05, 2020 7:42 pm
by SirensOfNewYork
Eows 115 wrote: ↑Thu Nov 05, 2020 5:45 pm
Oh wow thank for all the info I never knew they could come in different ratios other then 16 port on the 3v8!
I think you mean the 5V.
Re: Sentry Siren port ratios
Posted: Fri Nov 06, 2020 2:34 pm
by NottaFoamer
CD_Siren wrote: ↑Thu Nov 05, 2020 3:32 pm
16V1T - 8/8
Also are you sure the 16V1T is 8/8? because i've heard a 8/8 port sterling and it sounds nothing like the 16V
Re: Sentry Siren port ratios
Posted: Fri Nov 06, 2020 2:40 pm
by championsiren
Eows 115 wrote: ↑Fri Nov 06, 2020 2:34 pm
CD_Siren wrote: ↑Thu Nov 05, 2020 3:32 pm
16V1T - 8/8
Also are you sure the 16V1T is 8/8? because i've heard a 8/8 port sterling and it sounds nothing like the 16V
Sterlings were never 8/8 port. They only had 8 port Model "K" sirens.
The dual rotor Sterlings were either 8/16, 16/16, and I think 12/12 for the Little Giant.
Unless you custom ordered it to be 8/8, which I think no sterling vertical like that exists.
Re: Sentry Siren port ratios
Posted: Fri Nov 06, 2020 3:29 pm
by Chicagosiren-hunters
IceBolt_1003 wrote: ↑Fri Nov 06, 2020 2:40 pm
Eows 115 wrote: ↑Fri Nov 06, 2020 2:34 pm
CD_Siren wrote: ↑Thu Nov 05, 2020 3:32 pm
16V1T - 8/8
Also are you sure the 16V1T is 8/8? because i've heard a 8/8 port sterling and it sounds nothing like the 16V
Sterlings were never 8/8 port. They only had 8 port Model "K" sirens.
The dual rotor Sterlings were either 8/16, 16/16, and I think 12/12 for the Little Giant.
Unless you custom ordered it to be 8/8, which I think no sterling vertical like that exists.
all 16V1T/s are 8/8 port, hence the "1T" in the name. If it were to be 8/16, then it would be a 16V2T. 16V's sound different than a standard 8-port siren because these use two motors that, more often than not, spin at different speeds which creates dissonance.