Max.liftoffweight

Does anyone know the max. liftoffweight of an RATT-H70 hybrid?
Following the 1:5 formula it´s about 1,4 kg.
Is that correct? Had anyone flown this motor?

Jochen

The RATT H70 is a great motor for 1.5" rockets and 2" rockets. I love to fly it in a LOC Legacy, gets about 2800 feet. See my Legacy page at https://daveysplace.netfirms.com/Projects/Level1/legacy.htm. As for the liftoff weight... 1,4 kilos seems about right, I think. The Legacy really gets moving on the H and it's about 0,4 kilos. Worth a shot, at least. Use a magnetic apogee detector -- that way, worst case, you'll get the rocket back, and you can fly an H180W next time

Good luck. The RATT motors are great!

Originally posted by Rocketboy25
Does anyone know the max. liftoffweight of an RATT-H70 hybrid?
Following the 1:5 formula it´s about 1,4 kg.

Click to expand...

Sounds about right. I've been stretching a Loc Forte to use as my Ratt Works H-70 test bed. Estimated weight including motor and fuel is about 3.5 lbs. The divide by 5 rule indicates about 3.2 lbs ( 1.44 Kg ). Should be OK. May use a 6' rail to increase the velocity ( off rail ) a bit.


Al