How high do Jarts fly on F and G motors?

I am building a 2.1 Jart and was wondering what to expect.
I don't have access to rocsim or open rocket.

Any help would be appriciated.

My guess would be about 3ooo' on G motors and about 1500 on F motors. Thats just my rough estimate

I put the Jart in OpenRocket after I bought two at AirFest last year. An AT G76 puts it up to about 2400'. My OR file attached. I would suggest downloading OpenRocket here. It is free and simple to use. Plus if you have any questions about anyone on TRF will help you plus the developer is on here.

View attachment Wildman Jart 29mm.ork

they really go on H84's (might want to use a tracker, especially if your son wants it brown so it is perfectly camouflaged when it's on the ground.

btw don't forget to add some nose weight. I used half of a small container of bb's from walmart with a syringe of 1 minute epoxy

JMHO....

MasonH said:

My guess would be about 3ooo' on G motors and about 1500 on F motors. Thats just my rough estimate

Click to expand...

Sounds about right on the 'F'..I flew mine on a single use 'F' at the last launch I was able to attend..I guesstimate the altitude was about 1200-1300'...

DO NOT use the little plastic loop on the nose cone to attach your shock to! It WILL break even with as light of a nose cone as it is..Don't ask

Open Rocket simmed a CTI 56-F120 to 690 feet, and our actual altitude for the flight was 570. We've also flown it on a CTI 110-G250 Vmax, that simmed to 2200 feet but I suspect we were several hundred feet lower than that (I forgot to load the altimeter).

Ours weighs 24 ounces w/ recovery gear/no motor. The F motors I simmed were coming in under 800'. The G's were simming to around 2000, plus or minus. YMMV.

Dang tootin' about the nose cone weight. I think I put over 3 ounces in ours. Probably overkill, but I wasn't worried about maximum altitude for this project. Somebody launched one at our club launch in January and it started tumbling as soon as it left the rails, and took a dirt nap about 150 feet away from the pad. I did not talk to the builder, but it was obviously unstable. I'm sure that more than a few people made that mistake, since there were no build instructions when I got mine and you had to know what you were doing.

Thanks for the info!

Gee....I don't have any nose weight in mine. Never had any problems, but then I just tacked my fins on with 5 minute and ran the tiniest of fillets with same.

Just about everyone of these I've seen has been way overbuilt....large fillets probably causing the rear end to be overweight.

I fly mostly 3-5 grains though, a tiny F-motor is also putting the weight in the butt........just fly bigger motors...shifts the weight forward.LOL

I have a buddy here that flys this Jart in 38mm (flying motor) on a 2 grain CTI motor it went to 5286 ft and on a 3 grain motor and all recovery and alt in the nose went to just over 6000 ft! very impressive and very lucky to get it back both times.