Estes Rockets - AltiTrak Altitude Rocket Tracker Batteries Universal The upper hinge pin hole

The upper hinge pin hole of the rear axle carriers cannot be used (not a stock location for these vehicles) due to strengthening designs that reduce the clearance around the rear axle

add great looks as well as increased performance on the trail

and is supported by a limited lifetime breakage warranty for stress-free performance you can count on

Dirty Danglers are not sold with mounting hardware so a separate chain or split ring will be needed

Hitec's HFP-30 Field Programmer is the latest in digital servo testing and programming

Estes Rockets - AltiTrak Altitude Rocket Tracker Batteries Universal The upper hinge pin holeFollow the rocket in the sights to apogee, release the trigger to lock the reading. It is that easy. Use two Altitraks for greater accuracy. Great for school and science projects!