2 stage water rocket and single stage QRS Feb launch

Feb update on 2 stage Water Rocket
Had some success with bugwubber clamp working and radial deploy success.
Very low altitude on second stage launch. Drogue was supposed to pull a main chute out but failed.
Second stage chute failed to deploy. Not sure why. Second stage suffered fatal damage.
Hoping to complete a new rocket with drop away boosters and a second stage on top for the April QRS launch.

Then had fun with single stage rockets made from 70mm WATER bottles (not Soda).
Nice straight flights except the first one snapped off the chute but amazingly it glided back to the ground without any damage.. Lucky day.

Next 2 launches went fine.

Update to 2 stage rocket

After a failure with a 2 stage rocket launch last month, I have modified the clamp system with extensions. The previous failures were caused by the sleeve distorting under pressure and allowing the clamp to release. The extensions are designed to clamp to the upper stage which has a firm shape and should not allow the clamp to release prematurely... Here's hoping.

A link to last months failure is here. (about half way through)

January Trials

Had a great day out with QRS. Managed a total of 3 flights with one disaster.

A 2 stage rocket I'd been working on for a while had a second stage launch on the pad. This destroyed the payload area, timer etc.
Seems the radial deploy wasn't strong enough to handle the pressure. It blew at 85psi.
So it's back to the drawing board for that project.

2 other flights using 70 mm water bottles (not soda) both flew well at minimum pressures around 90psi.

Noticed the O-ring on the gardena nozzle had slipped up the nozzle on 2 launches. Suspect this is reason for sudden/temporary loss of pressure when getting rocket ready. Will change 0-rings and try different nozzle brand.

Anyway, here's a quick look at the day.