> For the complete documentation index, see [llms.txt](https://docs.freeflysystems.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.freeflysystems.com/astro/other-user-manuals/specs-and-interfaces/drawings-and-cad.md).

# Drawings and CAD

## CAD

Astro has slightly different models depending on when it was manufactured. How can I tell which model is which? The Astro Max has larger motors that are wider than the base they are on, as seen below in the CAD model. 

<figure><img src="/files/KaqYJCg0ZoP65jgYWkmf" alt="" width="563"><figcaption></figcaption></figure>

<details>

<summary>Astro Max</summary>

[STP](https://www.dropbox.com/scl/fi/xyecmphatdlndl3qwjrs1/890-00213-Assembly-Astro-Max.STEP?rlkey=z6mimwyzzom5eqmu0vagbd85q\&st=ye2rt830\&dl=0) file type (open in edrawings or Autodesk Viewer for a quick view)

</details>

<details>

<summary>Astro (non-Max):  </summary>

[STP](https://www.dropbox.com/scl/fo/rig794j0z2ynjflt861mi/AIOYqzKT29OFiAUd31VvH5I/CAD%20Files?dl=0\&preview=Astro+ShrinkWrap+Base.stp\&rlkey=8ovek058zrghiojv7q8lu6hoo\&subfolder_nav_tracking=1) file type (open in edrawings or Autodesk Viewer for a quick view)

[Parasolid ](https://www.dropbox.com/scl/fi/uehdjstd090w5hue2lifv/Astro-ShrinkWrap-Base-with-Batteries-Exposed-IO-Panel.x_t?rlkey=k7k5r8wqpzpsiz1vm3h6hvg6e\&dl=0)file type (Use with newer versions of CAD software that support this file type)

</details>

## Drawings

Mounting Points: Plate Vibration Isolator Bulb (mm)

![](/files/-Mhy1oR6zT5fsALig5e2)

Chassis Mounting Points: Assembly Airframe Complete (mm)

{% hint style="info" %}
Lower chassis perimeter holes are helicoiled M3x0.5mm with a nominal depth of 5mm
{% endhint %}

![](/files/-Mhy2L0DVXSGYeLQtGzE)

{% hint style="info" %}
Upper chassis perimeter holes are helicoiled M3x0.5mm with a nominal depth of at least 7mm on the left/right side and 5mm in the front
{% endhint %}

![](/files/-Mhy2CDV6x_Lv4qflURJ)

![](/files/-Mhy25lT9XXEO0qzAYtX)

## Dimensions

| Dimension                               | Astro Max Value (mm) | Astro (Legacy F45) Value (mm) |
| --------------------------------------- | -------------------- | ----------------------------- |
| **Unfolded Diameter (w/o Props)**       | 930                  | 917                           |
| **Unfolded Diameter (Including Props)** | 1407                 | 1407                          |
| **Unfolded Height**                     | 359                  | 359                           |
| **Folded Footprint (square)**           | 390                  | 355                           |
| **Folded Height**                       | 178                  | 178                           |
| **Landing Gear Footprint (square)**     | 330                  | 330                           |

## Accessories

### Astro Max Quick Release Landing Gear

<figure><img src="/files/LpBmnB9H6G6nmXuTevtg" alt=""><figcaption><p>Quick Release Landing Gear</p></figcaption></figure>

[Store Link](https://store.freeflysystems.com/products/astro-max-landing-gear?_pos=1&_sid=39b0cc21d&_ss=r)

{% file src="/files/aPcPbkEQIYBm0wMF5o1t" %}

### Generic Antenna Mount for Astro

If you want to mount an antenna for 3rd party integrations (such as an external GPS), you can find a 3D printable file here for a standard SMA cable mount:&#x20;

<figure><img src="/files/mBy8SwkFIH763VDwybER" alt="" width="375"><figcaption><p>This mounts to Astro's upper chassis with QTY 2 M3 x 8 SHCS screws</p></figcaption></figure>

{% file src="/files/2bRXBhM2w8HAxFR9lFyV" %}

{% file src="/files/0mVYjMKzwIrMUELrOsLZ" %}

### Astro Top Mount Dovetail w/ Isolator

<figure><img src="/files/Yk8bMBt23mjt5BElJDX1" alt="" width="375"><figcaption></figcaption></figure>

[Parasolid CAD file](https://www.dropbox.com/scl/fi/tf4dcsdv9mnstniz84bta/870-01073-Assembly-Mount-Top-Dovetail-Astro.x_t?rlkey=8lwzibn1cs46n0vanlirwaefr\&dl=0) (Use with newer versions of CAD software that support this file type)

{% hint style="info" %}
Note, this CAD file is positioned correctly against the top level Astro CAD model from the top of this page.
{% endhint %}

### Flux Dual GPS Antennae w/ Mounts

<figure><img src="/files/J31posd27sdhk0m0QZ2A" alt="" width="375"><figcaption></figcaption></figure>

[Parasolid CAD file](https://www.dropbox.com/scl/fi/tf4dcsdv9mnstniz84bta/870-01073-Assembly-Mount-Top-Dovetail-Astro.x_t?rlkey=8lwzibn1cs46n0vanlirwaefr\&dl=0) (Use with newer versions of CAD software that support this file type)

{% hint style="info" %}
Note, this file contains only the Flux Dual GPS with their Astro-specific chassis mounts, positioned correctly against the top level Astro CAD model from the top of this page.
{% endhint %}

### FPV System for Astro

<figure><img src="/files/ORXyBxoEdNK0xgjpLCtQ" alt="" width="375"><figcaption></figcaption></figure>

[Parasolid CAD file](https://www.dropbox.com/scl/fi/tf4dcsdv9mnstniz84bta/870-01073-Assembly-Mount-Top-Dovetail-Astro.x_t?rlkey=8lwzibn1cs46n0vanlirwaefr\&dl=0) (Use with newer versions of CAD software that support this file type)

{% hint style="info" %}
Note, this CAD file is positioned correctly against the top level Astro CAD model from the top of this page.
{% endhint %}


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