Strange Parts

[Gunstar]

I have a Broadsword kit that I've had sitting around for years waiting to be built, and I'm finally doing it, but it seems the engine hook and E to D spacer were missing (opened it long ago, my bad). I went digging into my loose parts, and I found what I needed, but I also found an engine hook and spacer that are only 3/4 of an inch longer than what a D would need rather than an inch longer like what you would need for a E/D engine mount. What engine would that be for? Were E engines only 3/4 of an inch longer than a D long ago or something?

 

[Flyfalcons]

Yes, the old Estes E15 motors were shorter (89mm) than current E motors (95mm).

 

[kuririn]

See posts #8 and #9 on this thread:
https://www.rocketryforum.com/threads/estes-pro-series-terrier-sandhawk.159206/Just sub a new "E" length motor hook on your Broadsword.

 

[MALBAR 70]

I would leave out the thrust ring and use an Estes retainer.

I botched this up on my Broadsword, I didn't realize the MMT was designed for slightly shorter E engines. I eventually just straightened out the engine hook and use masking tape to secure the engine to the hook.

 

[Gunstar]

Yes, the old Estes E15 motors were shorter (89mm) than current E motors (95mm).

OK, that explains it. The directions with the kit look like they are for the shorter engine (1/2 inch of the motor extending past the tube, engine hook covers 3 inches of tube) My strange parts may be the originals from the kit.

Thanks

 

[5x7]

old Estes E15 motors

BOOM!

Sorry, force of habit.

 

[Cape Byron]

I had a couple of these 'weird size' hooks in my parts box.



Don't throw it away!

Just bend the tang that hold the rear of the motor until it is straight, measure to 95 mm and re-bend at right angles. Cut off the excess.



That's how I made the hook for my 'E' Spacemonkey V2.