Reliable Rocket

Reliable Rocket Providing innovative products and services that make building and flying amateur rockets fun and reliable.

Large order going out to an international customer. 4", 5", and two 6" winders and spacers. Yes, they fly some BIG rocke...
07/19/2026

Large order going out to an international customer. 4", 5", and two 6" winders and spacers. Yes, they fly some BIG rockets with long harnesses.

We have done it! Necessity has mothered invention. Introducing the 38mm adapter. 2nd piece from the left adapts a 50mm w...
07/11/2026

We have done it! Necessity has mothered invention. Introducing the 38mm adapter. 2nd piece from the left adapts a 50mm winder down to 38mm coils.

So let’s have a little fun with this… The person closest to guessing the length of the harness in the coil stack pictured here will receive a prize, the 50mm winder and 38mm adapter you see here. You have 1 week to guess. Note: all the information you need to make a good guess is obvious in the picture except for the tubular Kevlar width of 3/16”.

Use comments to make you guess.

Occasionally I get questions about what spacers are needed. The spacers of course reduce the headspace so multiple width...
06/14/2026

Occasionally I get questions about what spacers are needed. The spacers of course reduce the headspace so multiple widths can be wound/coiled without needing multiple winders for the same diameter. The headspace for a winder is described in the description (and model number) of the winder. For example, the little 50mm, Harness Winder (50mm)(8mm) has a head space of 8mm so the best spacer for 3/16” (5mm) Kevlar is the 3mm spacer. You can see the spacer underneath the coil pictured below.

Reliable Rocket will be attending AIRfest 32 (September 4th – 7th 2026) with Wright Brother and Sisters Used Rockets and...
05/16/2026

Reliable Rocket will be attending AIRfest 32 (September 4th – 7th 2026) with Wright Brother and Sisters Used Rockets and Space Salvage. We will be taking advanced orders for the event – performing demonstrations of the configuration and use of our Harness Winder and Recovery (chute) at AIRfest. For more information visit our page @ https://www.facebook.com/ReliableRocket.

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1612 Dove Circle
Spring Hill, TN

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