Building an electronics bay for multiple rockets?

DuctTapeandRocketFuel · Jan 12, 2014

What is the spacing for the all thread that holds the sled in a 3.0 LOC av-bay?

My goal is to build a few HRP dual deploy rockets this year. I would like to use my electronics in multiple rockets to save a lot of build time, and some money. I have built a av-bay for a Loc 3.9 inch tube, and built it to be usable in my next LOC 4 inch kit.

I am also building a 2.56 scratch build, and a 3 inch fiberglass kit.

The idea is to build a sled that can fit in multiple rockets. The sled will contain an altimeter / DD, battery, and arming switch. I will use Doghouse av-bay wiring kit so the connections will be detachable. The question is can this be done with different diameter tubes within reason?

patelldp · Jan 12, 2014

https://www.rocketryforum.com/showthread.php?61664-3D-Printing-Applications-for-HPR

hball55 · Jan 14, 2014

DuctTapeandRocketFuel said:
What is the spacing for the all thread that holds the sled in a 3.0 LOC av-bay?

My goal is to build a few HRP dual deploy rockets this year. I would like to use my electronics in multiple rockets to save a lot of build time, and some money. I have built a av-bay for a Loc 3.9 inch tube, and built it to be usable in my next LOC 4 inch kit.

I am also building a 2.56 scratch build, and a 3 inch fiberglass kit.

The idea is to build a sled that can fit in multiple rockets. The sled will contain an altimeter / DD, battery, and arming switch. I will use Doghouse av-bay wiring kit so the connections will be detachable. The question is can this be done with different diameter tubes within reason?

You need to take the smallest diameter kit and make it work for that kit. It will be easy after that. I have been doing similar, but not dual deploy, with PML Intellicones. I can switch out the same magnetic apogee detector between 5 different rockets, starting with the smallest diameter 2.1" to 3", 4" and 6" diameter rockets.

Handeman · Jan 19, 2014

My first sled was for a 2" ID rocket. All other av-bays were built with the threaded rod at the same width so that sled fits all my rockets. The coupler are much longer on the 4" rockets then the 2", so the 4" have some dense foam blocks on either end to hold the sled centered in the av-bay, along with providing a little shock protection. I've put the switches for all the bays in the bays instead of on the sleds. A sled for a 2" bay would be hard to turn on in a 4" av-bay. The switches are in the bay and attach to the switch terminals of the altimeters when they are installed, just like the pyro connections that feed to the bulkheads.

MWC · Jan 19, 2014

Here are some "all-thread-sled" versions I'll be offering shortly for the RRC2+ altimeter. These sleds have an integral 9V battery holder (not shown on opposite side) and a rotary switch mount. The switch "rotary head" sits directly behind an electronics bay vent hole. I will also be "bundling" this sled design with all the parts (battery snap, euro terminals, switch, screws {and altimeter}) at a "bundled" price.

54mm / 1.5" centers for #10 allthread
75mm / 2" centers for 1/4" allthread
98mm / 3" centers for 1/4" allthread

JDcluster · Jan 20, 2014

3D printed?

JD

MWC said:
Here are some "all-thread-sled" versions I'll be offering shortly for the RRC2+ altimeter. These sleds have an integral 9V battery holder (not shown on opposite side) and a rotary switch mount. The switch "rotary head" sits directly behind an electronics bay vent hole. I will also be "bundling" this sled design with all the parts (battery snap, euro terminals, switch, screws {and altimeter}) at a "bundled" price.

54mm / 1.5" centers for #10 allthread
75mm / 2" centers for 1/4" allthread
98mm / 3" centers for 1/4" allthread

hball55 · Jan 20, 2014

Looks nice, let us know when they're available. I have two RRC2+ that aren't mounted or in a rocket, one is for a 54mm min dia rocket. Could also use one with the 98mm sled.

MWC said:
Here are some "all-thread-sled" versions I'll be offering shortly for the RRC2+ altimeter. These sleds have an integral 9V battery holder (not shown on opposite side) and a rotary switch mount. The switch "rotary head" sits directly behind an electronics bay vent hole. I will also be "bundling" this sled design with all the parts (battery snap, euro terminals, switch, screws {and altimeter}) at a "bundled" price.

54mm / 1.5" centers for #10 allthread
75mm / 2" centers for 1/4" allthread
98mm / 3" centers for 1/4" allthread

bdureau · Jan 20, 2014

MWC said:
Here are some "all-thread-sled" versions I'll be offering shortly for the RRC2+ altimeter. These sleds have an integral 9V battery holder (not shown on opposite side) and a rotary switch mount. The switch "rotary head" sits directly behind an electronics bay vent hole. I will also be "bundling" this sled design with all the parts (battery snap, euro terminals, switch, screws {and altimeter}) at a "bundled" price.

54mm / 1.5" centers for #10 allthread
75mm / 2" centers for 1/4" allthread
98mm / 3" centers for 1/4" allthread

This is a really cool idea.
I got myself a 3D printer the other day so as soon as I get it to work I will try something similar

bill2654 · Jan 20, 2014

MWC said:
Here are some "all-thread-sled" versions I'll be offering shortly for the RRC2+ altimeter. These sleds have an integral 9V battery holder (not shown on opposite side) and a rotary switch mount. The switch "rotary head" sits directly behind an electronics bay vent hole. I will also be "bundling" this sled design with all the parts (battery snap, euro terminals, switch, screws {and altimeter}) at a "bundled" price.

54mm / 1.5" centers for #10 allthread
75mm / 2" centers for 1/4" allthread
98mm / 3" centers for 1/4" allthread

Post here when the bundles are ready for sale, I want.

blackbrandt · Jan 20, 2014

MWC said:
Here are some "all-thread-sled" versions I'll be offering shortly for the RRC2+ altimeter. These sleds have an integral 9V battery holder (not shown on opposite side) and a rotary switch mount. The switch "rotary head" sits directly behind an electronics bay vent hole. I will also be "bundling" this sled design with all the parts (battery snap, euro terminals, switch, screws {and altimeter}) at a "bundled" price.

54mm / 1.5" centers for #10 allthread
75mm / 2" centers for 1/4" allthread
98mm / 3" centers for 1/4" allthread

Will you also do these for the RRC3?

cwbullet · Jan 20, 2014

MWC said:
Here are some "all-thread-sled" versions I'll be offering shortly for the RRC2+ altimeter. These sleds have an integral 9V battery holder (not shown on opposite side) and a rotary switch mount. The switch "rotary head" sits directly behind an electronics bay vent hole. I will also be "bundling" this sled design with all the parts (battery snap, euro terminals, switch, screws {and altimeter}) at a "bundled" price.

54mm / 1.5" centers for #10 allthread
75mm / 2" centers for 1/4" allthread
98mm / 3" centers for 1/4" allthread

That is about as perfect as you can get.

Viperfixr · Jan 20, 2014

Is a 38mm version also in the works? Excellent product!

MWC said:
Here are some "all-thread-sled" versions I'll be offering shortly for the RRC2+ altimeter. These sleds have an integral 9V battery holder (not shown on opposite side) and a rotary switch mount. The switch "rotary head" sits directly behind an electronics bay vent hole. I will also be "bundling" this sled design with all the parts (battery snap, euro terminals, switch, screws {and altimeter}) at a "bundled" price.

54mm / 1.5" centers for #10 allthread
75mm / 2" centers for 1/4" allthread
98mm / 3" centers for 1/4" allthread

MWC · Jan 20, 2014

cwbullet said:
That is about as perfect as you can get.

Thanks, Chuck... Landru and I collaborated on these designs.
They are 100% drop-in "modular".

bill2654 said:
Post here when the bundles are ready for sale, I want.

I shall post here... I expect this coming weekend I'll have them loaded up in the "cart".

blackbrandt said:
Will you also do these for the RRC3?

Yes... the RRC3 sled will also accomodate the RRC2+, RRC2-mini, and PET2+

MWC · Jan 20, 2014

Viperfixr said:
Is a 38mm version also in the works? Excellent product!

Thank you Mark, and yes, working on a 38mm version as well.

jsargevt · Jan 20, 2014

Those are perfect. I'll be looking forward to them when they are available for sale.

cavecentral · Jan 20, 2014

Sweet. Making ebays / sleds is my least favorite part of building a rocket. lining up holes, mounting stuff, etc. Always needing to re-arrange stuff.

DuctTapeandRocketFuel · Jan 20, 2014

Wow, there are some awesome ideas being presented. Those 3-D printed sleds look totally sweet, and solve a ton of logistics problems with DIY sleds and component arrangements. Looking forward to seeing pricing and options.

dixontj93060 · Jan 20, 2014

MWC said:
Thanks, Chuck... Landru and I collaborated on these designs.
They are 100% drop-in "modular".

I shall post here... I expect this coming weekend I'll have them loaded up in the "cart".

Yes... the RRC3 sled will also accomodate the RRC2+, RRC2-mini, and PET2+

Jim Amos is on a roll!!!!

jpummil · Jan 20, 2014

dixontj93060 said:
Jim Amos is on a roll!!!!

This! These look nice! And I need to order an RRC2+ anyway, so...

MWC · Feb 2, 2014

bill2654 said:
Post here when the bundles are ready for sale, I want.

As you requested....
RRC2+ version are now available.
RRC3 versions to post tomorrow.

https://www.missileworks.com/store/#!/~/category/id=8599330&offset=0&sort=normal

Viperfixr · Feb 2, 2014

Bought RRC2+ and a sled! Perfect for my minimum diameter project.

jd2cylman · Feb 2, 2014

Jim,

Will there be a 98mm version that can accept one RRC3 and one RRC2+? That's how I'd like one configured. RRC2+ as backup for the RRC3.

Adrian

dixontj93060 · Feb 2, 2014

jd2cylman said:
Jim,

Will there be a 98mm version that can accept one RRC3 and one RRC2+? That's how I'd like one configured. RRC2+ as backup for the RRC3.

Adrian

Same here.

Sent from my iPhone using Rocketry Forum

MWC · Feb 2, 2014

jd2cylman said:
Jim,

Will there be a 98mm version that can accept one RRC3 and one RRC2+? That's how I'd like one configured. RRC2+ as backup for the RRC3.

Adrian

Yes, they'll be up tomorrow.

bill2654 · Feb 3, 2014

MWC said:
As you requested....
RRC2+ version are now available.
RRC3 versions to post tomorrow.

https://www.missileworks.com/store/#!/~/category/id=8599330&offset=0&sort=normal

Out of stock already! I guess I'll have to wait a little longer.

jpummil · Feb 3, 2014

MWC said:
As you requested....
RRC2+ version are now available.
RRC3 versions to post tomorrow.

https://www.missileworks.com/store/#!/~/category/id=8599330&offset=0&sort=normal

Jim, no availability on the 54mm model yet? Just judging by the web page...

cwbullet · Feb 3, 2014

I suspect it sold out.

Landru · Feb 3, 2014

cwbullet said:
I suspect it sold out.

Indeed. We're working on getting some back in stock as quickly as possible.

MWC · Feb 3, 2014

RRC3 Modular Sled Systems now available in the shopping cart:
https://www.missileworks.com/store/#!/~/category/id=8599330&offset=4&sort=normal

cwbullet · Feb 3, 2014

order placed.

Building an electronics bay for multiple rockets?

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