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3 October 2015 Launch BACAR 3

Hallo Team, the FUA was approved by CAMU to launch from Trichardt radio model club runway outside Trichardt.

Please be advised that we need to complete the launch between 04:00Z and 07:00Z.

This is the best news yet.

Kind regards,


Easy balloon fill calculation

Continue to inflate your balloon until it is generating enough lift. To tell how much lift you have, use your launch scale to pull down on the inflation nozzle until there is slack in the inflation hose. Add the weight of the inflation nozzle to the reading on your scale to calculate your Actual Lift. You’ll want to keep inflating your balloon until your actual lift is about one-and-a-half times the weight of your payload. This is your Required Lift.

Actual Lift  =  Reading On Scale  +  Weight of Inflation Nozzle

Required Lift  =  Weight of Payload  x 1.5

Congratulations! You can be confident you haven’t under or over-inflated your balloon. You are now ready to tie off your balloon.


BACAR3 – Live video TX

Bacar3 will be equipped with a live video transmitter on 2.4GHz.

The video will have on screen display of the GPS coordinates, vertical speed and ground speed.

The battery voltage, current draw and total power used, will also be displayed.

Additional is the amount of GPS satellites in view and the RSSI between TX and RX.

There is also an indicator of distance and direction home.

Oh date and time as well:-)




DrivenUp prediction 20150501

The final predictions looks like the ALZU Petro port is the central place to launch from

Good luck




DrivenUp prediction 20150429

The upper air winds are picking up speed to the north. LZ still close to ALZU N4 petroport North to R104.

The predicted LZ is in flatter area farm land which is nice, bring binoculars.

If I look on Google earth we have at least on water landing, two very close to water and one on the N4 :-(

This is going to be fun and a long drive.




DrivenUp prediction 20150428

DU_20150428a DU_20150428b DU_20150428c

DrivenUp prediction 20150427

The two prediction programs are giving the same LZ :-)

Best place to catch the balloon is due North on the N11 half way between Hendrina and Middelburg.

Bring plenty water and sun tan lotion it is going to be a very nice autumn day in the Highveld. Click the weatherlink below.

DU_20150427a DU_20150427b DU_20150427c Weather_9D_20150427

DrivenUp prediction 20150424


It still remains Alzu N4 Petropoort and Carolina for the teams waiting.

Launch time 7 am

The one that lands close to Carolina has a busrt altitude of 30 000m fixed in prediction

DU_20150423a DU_20150424b DU_20150424c

Drivenup flight predictions

First picture is for a 7 o’çlock launch

Rest is for 6 o’clock launch, somewhere between Corolina and the ALZU petro port will be a good spot to expect the LZ

Weather_9D_20150423 this link contains the 9 day weather forecast for the region, Monday is going to be a nice day.

DU_20150423 DU_20150423b DU_20150423c

Software modem UZ7HO for use with UIView

CheckSR G3RUH-modem10 history lptwdmio sm2ch44 sm2ch45 sm2ch52 sm2ch57 user_guide_v045b_EN user_guide_v045b_FRuser_guide_v045b_FR user_guide_v045b_EN sm2ch57 sm2ch52 sm2ch45 CheckSR G3RUH-modem10 history lptwdmio sm2ch44