Need help with the ESTES Saturn Skylab

[Saluki]

Have just started the Saturn Skylab build. I'm looking at the instructions for assembling the engine mount and I don't see any reference made for a thrust ring to be installed. Is this a mistake in the instruction or is there a thrust ring needed?

 

[Antares JS]

Have just started the Saturn Skylab build. I'm looking at the instructions for assembling the engine mount and I don't see any reference made for a thrust ring to be installed. Is this a mistake in the instruction or is there a thrust ring needed?

Look ahead in the instructions and see if it has you put a tape thrust ring on the motor. Lots of Estes 29mm powered rockets have no internal thrust ring and have you do a tape thrust ring, because they know people are going to stuff Aerotech motors of different lengths in them.

 

[James Duffy]

Skip ahead to the section on preflight prep. There you'll see reference to the placement of a tape thrust ring on the aft end of the engine. This is how the engine engages with the twist-on retainer.

It seems silly at first, but is entirely effective and affords the modeler the convenience of a wider range of physical motor sizes.

Edit: Antares beat me to the answer. He is wise.

 

[Antares JS]

One other small note, if you don't have some already, I HIGHLY recommend buying a roll of 1/4" thick masking tape to make thrust rings with. It's a lot less hassle and waste than using thicker tape and then cutting it down. Rolls can be had for a few dollars on Amazon if you don't have a local supplier.

 

[Saluki]

Thanks. guys. I'm glad you have clarified this for me. I'm using a foal-lined 29mm engine tube, I'm sure this won't make a difference.
If anyone else has some tips to help me out please let me know. Thanks again.