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Rocket KitMadcow-Tomach-54mm Carbon FIber
Rating95.0
1 users
Skill4
Length76.50"
194.31cm
Diameter3.00"
7.62cm
Weight9.84lbs
4.46kg
Parachute48"
121.92cm
Drogue24"
60.96cm
Motor Mount54mm
DeploymentDual-2 Computers

TOMACH

OpenRocket / RockSim

Likefileicon F - I - TOMACH X3-54 CF - Reloads.ork

Description

Ah Tomach, yes ! Expected a lot from this rocket but nop, has a very nasty roll in the flight ! Fins seems to be warped a bit !! Flies good on lower speeds, but has a severe problem when it reaches Mach 1 speeds !! Rocket is nice looking and I will give the fin issue a try to fix them in the near future. Will give it one more change ! Will probably remove the fins and replace them with 3/16 fiberglass fins.Also removed the switch band on all rockets and installed dual recessed switches...

Cut off the fins - Waiting on Fiberglass fins from Giant Leap Rocketry 1/8" -

UPDATE 12/17/2015 - cut the fin slots with a table saw. need to find small dremmel tool bit to cut out the slots a bit more all the way up to the Motor Mouth...and clean that out.

UPDATE 29/12/2015 - Started installing the fins, keeping them upright and make sure that they have the same distance in between the tips ! One fin at the time tacked in with CA glue. Next day the next fin, checking for alignment and distance with the first fin. After all the 3 fins are installed, they look great and perfect, a job I had never accomplished this close.

UPDATE 01/01/2016 - started tucking in Carbon fiber fabric into the grooves, them brushing in a large quantity of epoxy in there so it is all well soaked ! After that and when dry, I started getting the Carbon fiber over the fins and grooves brushing on the epoxy. When this is dry then a layer of Fiberglass over the fins covering the carbon fiber very well...

And of course sanding in between to get the bumps out !!

UPDATE 01/02/2016 - All dry - sanding, then a last coat of epoxy WITH micro-balloons, thanks Jason for supplying that to me ! Works great. Finish is drying now and looks already very smooth.

UPDATE 01/03/2016 - Sanding day, then applying Rocketpoxy for the fillets, applying blue tape to get it all in control and not so much on the fins ! Rocketpoxy does not sand great !!

UPDATE 01/10/2016 - Weather is still warm, started priming today. So I can see were it still needs bondo to fill in the bumps, and hen lots of sanding again.

UPDATE 01/16/2016 -Also cutting a window for iphone video recording. Wanna take that rocket to GRITS in Georgia in April 2016.

UPDATE 01/22/2016 - Weather is reasonable for painting, just heated up the rocket parts with the hairdryer to make sure. White came out great on the fins and also the single band. Next is waiting a few days (6) for polishing and waxing.

UPDATE 02/014/2016 - Rocket all waxed up and Installed window, all glued in and lined up. window is like 7/8" opening to get a good recording with no banding. Hoping for the best.

UPDATE 02/03/2016 - Rocket all done, rail buttons on and lined up and epoxied ! That rocket is ready to fly next launch ! Good luck Freddy !

UPDATE 09/23/2020 - Rocket came down on motor and I had a hard time getting the casing out, I guess the inner mount got dented a bit. So after getting the casing out I sanded it out with rough sandpaper and after a while it slides in very smooth now again. Also during the flight the metal tip of the nose cone screwed off and got lost. I will replace that and epoxy the new tip on. A few minor cracks in the lower booster at the end of the fins but really nothing major. Indeed rocket landed on the roadway in SRA Palm Bay... Fins are a bit scratched but no repairs there.

Update 12/21/2020 - Nose cone tip ordered from Madcow.

Update 12/30/2020 - Nose cone arrived, metal tip is not a perfect match's, it's bit bigger in diameter but I can make it work with some fiber glassing if I need to, I just screwed it on for now.

Update 10/10/2021 - Fixed the nose cone tip with bondo, will sand and finish painting this week for another flight at SRA. Transition will be smooth.

Update 11/24/2021 - After the last flight this rocket came down ballistic and got lost. Today it was found by Carlos. It was very badly damaged, fin can and part of the booster seems ok and could be rebuild. I will work on this rocket and make it fly again under de new name, Tomach II.


 

Parachutes: Main 50" - Drogue 24"

 

Charges: Drogue 1.8 grams/2.0 grams - Main 1.8 grams/2.0 grams FFFFg.

 

Comments

timcub
Like 2015-12-20 09:17:48Z

Got a picture of your recessed switches?

frewi80
Like 2015-12-22 22:58:58Z

Hold on Tim, It's late and I just saw the post, will make a few pics over the next few days..

Greets

esotericdude
Like 2016-01-03 10:59:33Z

Wow! Amazing rebuild Freddy!

With replacement of the fins, you have given this rocket a second life! I can't wait to see her fly again!


Summary

Total Launches8 Highest Altitude7474 ft
2278.08m
Cumulative Altitude33005 ft
10059.92m
Total Fail1 Highest Velocity704 MPH
1133.44km/h
Average Altitude4715 ft
1437.13m
Average MotorKAverage Thrust451Total Thrust3612
Motor SumMMotor Failure0 Average Speed439 MPH
706.79km/h
Averages & cumulative are calculated if there are actual values present, not just estimated. None of the averages or weighted. Please do not populate actual values with estimates.
# = Number of Launches  ? = Estimated

Launches

DateTitleLikesWeight#StatusAltitudeVelocityMotor
IMG_0953 B.jpg 2021-10-16 19:26:00Z
TOMACH - EIGHT FLIGHT - LOST / FOUND
Like 9.84lb.
4.46kg
1 Fail ?4966 ft
?1513.64m
?415 MPH
?668.15km/h
J449-15-BLUE STREAK
IMG_8098 B.jpg 2020-09-19 19:05:00Z
TOMACH - SEVENTH FLIGHT
Like 9.84lb.
4.46kg
1 Success 7474 ft
2278.08m
?7990 ft
?2435.35m
440 MPH
708.40km/h
?485 MPH
?780.85km/h
K261-WHITE
IMG_6801 B.jpg 2020-02-08 12:48:00Z
TOMACH - SIXTH FLIGHT
Like 9.84lb.
4.46kg
1 Success 3850 ft
1173.48m
?4959 ft
?1511.50m
334 MPH
537.74km/h
?401 MPH
?645.61km/h
K360-13-WH
IMG_4109 B.jpg 2019-05-18 17:16:00Z
TOMACH - FIFTH FLIGHT
Like 9.84lb.
4.46kg
1 Success 3602 ft
1097.89m
?4329 ft
?1319.48m
322 MPH
518.42km/h
?367 MPH
?590.87km/h
J355-17-RL
ToMach launch.jpg 2016-02-13 00:00:00Z
TOMACH-FORTH FLIGHT
Like 10.85lb.
4.92kg
1 Success 4630 ft
1411.22m
?5447 ft
?1660.25m
412 MPH
663.32km/h
?432 MPH
?695.52km/h
K454-19-SKIDMARK
tomach.jpg 2015-05-08 20:00:00Z
TOMACH-THIRD FLIGHT
Like 9.84lb.
4.46kg
1 Success 5233 ft
1595.02m
?9507 ft
?2897.73m
704 MPH
1133.44km/h
?655 MPH
?1054.55km/h
K675-18-SKIDMARK
tomach.jpg 2014-12-12 19:00:00Z
TOMACH-SECOND FLIGHT
Like 10.36lb.
4.70kg
1 Success 6276 ft
1912.92m
?7668 ft
?2337.21m
558 MPH
898.38km/h
?562 MPH
?904.82km/h
K650-16-SMOKEY SAM
tomach.jpg 2014-11-07 19:00:00Z
TOMACH-FIRST FLIGHT - LEVEL II Flight
Like 9.84lb.
4.46kg
1 Success 1940 ft
591.31m
?2412 ft
?735.18m
303 MPH
487.83km/h
?268 MPH
?431.48km/h
J400-16-SMOKEY SAM

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