HDK Delay kits

[Jeff Curtis]

Do the HDK delay kits allow you to change the length of a delay? The E11J used to come with a 5-second delay and then went to 3 seconds only. I have several rockets where the 5-second delay works well, but haven't found one where 3 seconds is optimal.

 

[kjhambrick]

Do the HDK delay kits allow you to change the length of a delay? The E11J used to come with a 5-second delay and then went to 3 seconds only. I have several rockets where the 5-second delay works well, but haven't found one where 3 seconds is optimal.

@Jeff Curtis --

You made me look.

It sure seems like there used to be longer delays for the E11J and F12J but ...

I could only find Aerotech HDK-12 which provides a 3-sec delay for the RMS 24/40 E11J and F12J or a 7-sec delay for the E18W and F24W.

See: ThrustCurve.org > Compare Motors

HTH

-- kjh

EDIT: Aerotech also has Aerotech HDK-13 which is a 5-sec delay for the F12J ... maybe that's what I remembered ?

And I am not recommending anything but will the HDK-13 fit in an RMS 24/40 E11J reload ???

 

[SolarYellow]

This lists what HDKs are certified with what motors providing what delay.

https://d3l66gvjdr7rqw.cloudfront.net/Templates/170652/myimages/24mm_hdk_instr_1642628701975.pdf

Link above is indexed here:
https://www.rocketmotorparts.com/page/instructions