My first mid power launch

[46u]

I will be doing my first mid power launch sponsored by SoAR the 28th of this month and maybe the 29th if I can make both days.

I have a PM Callisto that I will be using one use F20-4W to make it easier for the first time. I do have the motor casings and reloads if I do more then two launches.

Is there a GOOD way to make it where the fabric chute is easily to put on and take off instead of being permanent??

Do you put baby powder on the chute like you do with the plastic chutes?

There will be plenty of people there to help but any recommendations will be greatly appreciated. A prayer for a good launch and recovery would be nice as well.
Thanks
Jeff

 

[nute]

what I recently did on some of my rockets was to attach quick links and swivels to the shock cord where I attach the parachute. this allows me to just unscrew the link, remove it, and I can clip it to whatever rocket needs it.

Good luck!!

ps: AP is addictive!!

 

[chadrog]

What is the weight of your rocket? Recommended max liftoff weight for the F20 is 22oz., could be risky. Rocket looks nice, by the way.

 

[46u]

What is the weight of your rocket? Recommended max liftoff weight for the F20 is 22oz., could be risky. Rocket looks nice, by the way.

I will weigh it but this is one of the engines they recommended in the instructions. I have 2 other mid powers I am working on. One of them the G Force is my oldest grandson who is 8 and the rocket is taller then him.

 

[46u]

According to PM web site says 25oz but it all so the F20W as its lightest load. Need input here folks.
Thanks
Jeff

 

[chadrog]

I will weigh it but this is one of the engines they recommended in the instructions. I have 2 other mid powers I am working on. One of them the G Force is my oldest grandson who is 8 and the rocket is taller then him.

I'm surprised by that simply because the advertised dry weight of the rocket exceeds the motor manufacturers recommendation.

 

[rocketgeek101]

PML list the Callisto as weighing 25oz. I have a feeling that the F20 is going to be underpowered. If you are going to fly the rocket on this motor make sure you do so when there is NO wind.

Btw, the rocket looks great! I'm thinking of trying a PML kit and it might be this one or the Quicksilver...

EDIT: Dang! looks like you guys beat me to it!!

 

[46u]

OK I just got done talking to PM and the very nice guy I talked to said they figure what engines my computer software. He all so said he has launched a Callisto. Feed back please.

I have two other mid powers I am working on but once I got the PM they got put on the back burner as the PM kits are GREAT! No filling in the cardboard BT.
Thanks
Jeff

 

[46u]

HELP PLEASE!!!! I notice the single use econojet is much shorter then the motor tube for the re-loadable. I took one of the single motors out of the package and it just goes throw the motor mount tube. What is wrong? If I try to launch it this way all it will do is blow the piston and nose con out. The OD is fine just nothing to stop the motor.

 

[nute]

HELP PLEASE!!!! I notice the single use econojet is much shorter then the motor tube for the re-loadable. I took one of the single motors out of the package and it just goes throw the motor mount tube. What is wrong? If I try to launch it this way all it will do is blow the piston and nose con out. The OD is fine just nothing to stop the motor.

is there a small cardboard ring included? if so, epoxy that to the aft of the motor. This will act as the motor block. another option that may or may not be viable based on your retention system is to just use a thin role of masking tape around the outside of the motor.

I think I know what you mean. it might help if you post some pics.

 

[Area66]

PML list the Callisto as weighing 25oz. I have a feeling that the F20 is going to be underpowered. If you are going to fly the rocket on this motor make sure you do so when there is NO wind.

Btw, the rocket looks great! I'm thinking of trying a PML kit and it might be this one or the Quicksilver...

EDIT: Dang! looks like you guys beat me to it!!

Pavel is now selling PML in Canada,

https://www.allrocketengines.ca/ind...nsip6nhlq0oh21gapn1&keyword=Callisto&x=27&y=8

 

[46u]

is there a small cardboard ring included? if so, epoxy that to the aft of the motor. This will act as the motor block. another option that may or may not be viable based on your retention system is to just use a thin role of masking tape around the outside of the motor.

I think I know what you mean. it might help if you post some pics.

OK there is not any motor stop in the motor tube just the PML HAMR-29 motor retainer. The one use does not have a lip to keep the motor from going all they way throw. Will post pictures.
Thanks
Jeff

 

[46u]

Hope these poor pictures help. Notice the single use does not have a lip and the motor case does. The kit did not come with any motor stop up at the ejection end of the motor tube mount. The lip is what holds the motor in to the motor retainer.
Thanks
Jeff

 

[Area66]

you have to glue the trust ring that come with the motor, use epoxy and glue it to the motor, read the instruction

 

[nute]

Hope these poor pictures help. Notice the single use does not have a lip and the motor case does. The kit did not come with any motor stop up at the ejection end of the motor tube mount. The lip is what holds the motor in to the motor retainer.
Thanks
JeffView attachment 145602View attachment 145603View attachment 145604

Interesting that therer was nothing included with the motor itself. I thought most econojets came with attachable thrust rings. I'm not familiar with the retention system you're using, but a tape motor block might work. I flew my Argent on an F26 using a tape motor block.

just wrap 1/4 in. masking tape around the motor where the thrust ring would be until you're comfortable it won't slip through.

I think the cardboard in this picture serves that purpose: https://www.discountrocketry.com/images/images_big/ae_62007.jpg

 

[46u]

you have to glue the trust ring that come with the motor, use epoxy and glue it to the motor, read the instruction


View attachment 145609

This will not work on my rocket. Please look at pictures in my last post and you will see why. The kit did not come with a stop for the ejection side of the motor tube and only thing that holds it is the motor retainer on the rocket on the hot side. It has to have a lip which as I said before the one use do not have. I have read the instructions and if they helped I would not be posting this here. The one use motors I have only came with the brown cardboard ring in your pictures. My motors are about 6 years old.
Thanks
Jeff
Thanks
Jeff

 

[nute]

This will not work on my rocket. Please look at pictures in my last post and you will see why. The kit did not come with a stop for the ejection side of the motor tube and only thing that holds it is the motor retainer on the rocket on the hot side. It has to have a lip which as I said before the one use do not have. I have read the instructions and if they helped I would not be posting this here.
Thanks
Jeff
Thanks
Jeff

Are you sure?

the thing you glue to the motor will serve as the lip.

like I said, I don't know much about your motor retention system, but it looks like it has enough threads to be able to handle the added lip. it did using an Estes retainer which looks pretty similar.

 

[Area66]

I think you don't put your eyes glasses : GLUE THE WHITE CARDBOARD TRUST RING TO THE AFT SIDE OF THE MOTOR ( what you call hot ) event a M motor don't have anything to retain on forward side ( what you call ejection )


View attachment 145623

 

[nute]

Jerry is right.

It is very different from LPR, and as strange as it sounds therer is no thrust ring on the inside of the motor mount tube.

 

[46u]

I think you don't put your eyes glasses : GLUE THE WHITE CARDBOARD TRUST RING TO THE AFT SIDE OF THE MOTOR ( what you call hot ) event a M motor don't have anything to retain on forward side ( what you call ejection )


View attachment 145623

MY Engines only came with the small OD carborundum ring!!!!! The OD Of it is TOO small on the ONLY ring that came with my engines! Hope you under stand???
Thanks
Jeff

 

[46u]

Jerry is right.

It is very different from LPR, and as strange as it sounds therer is no thrust ring on the inside of the motor mount tube.

You are correct the kit did not come with a thrust ring. Thanks for remind me of the correct word.

 

[rocketgeek101]

Pavel is not selling PML in Canada,

https://www.allrocketengines.ca/index.php?main_page=advanced_search_result&search_in_description=1&zenid=f11sbc1nsip6nhlq0oh21gapn1&keyword=Callisto&x=27&y=8

Where does it say he's not?
As far as I can tell this is for sale in Canada...

 

[46u]

Other then the package this is all that came with my motors. I now see they must of started all so including a bigger ring which did not come with mine and does not say ANYTHING about the larger one in the instructions. I wear my glasses all the time and most times read with magnifiers.
Thanks
Jeff

 

[Area66]

Where does it say he's not?
As far as I can tell this is for sale in Canada...

typo, Pavel is NOW selling PML.....

 

[Area66]

they supose to be in the package

 

[46u]

typo, Pavel is NOW selling PML.....

They make the best kits I have ever seen. I have two other mid power rockets and stop on them once I got my PM kit. Did you by chance look at what came with my motors and they did not come with the larger rings. All so they say nothing in the instruction about large rings only the rings that came in the picture.
Jeff

 

[46u]

they supose to be in the package


View attachment 145626

Sure as heck where not any in my package. I have had these for about 6 years and tonight is the first time I open the package.
Thanks
Jeff

 

[Area66]

so use narow masking tape and make a ring on the motor.

 

[46u]

Thanks every buddy at least now I know the problem and will call Aerotech tomorrow. The launch is not till the 28th and 29th so maybe I can get a couple here before then. If not will have to get someone at the launch to help me with my reload-able.
Thanks
Jeff

 

[nute]

Thanks every buddy at least now I know the problem and will call Aerotech tomorrow. The launch is not till the 28th and 29th so maybe I can get a couple here before then. If not will have to get someone at the launch to help me with my reload-able.
Thanks
Jeff

Glad to be of any assistance

Good luck on the flight!!