petrel85 build

parts

• hglrc petrel85 frame (without carbon, with lipo strap)
• jhemcu ghf435v2
• rcinpower 1202.5/11.5k
• rush tank nano
• betafpv c03
• foxeer micro lollipop
• gemfan 2023
• gnb 2s 380mah or
• tattu 3s 300mah (with 76% motor output limit)

consumables

• hardware
  • for aio/canopy
    • M1.2 16mm (machine screws)
    • M1.2 nuts
    • M1.2 washers
    • optional: plastic M2 washers for TPU protection
  • for motors
    • M2 4mm
    • M2 washers
    • M2 7mm (for props, cut to length)
  • for cam mount
    • M2.6 5mm (self tapping)
• heat shrink for vtx (23mm, measured flat)
• zip tie for antenna (2.5mm)
• hot glue

prints

• modded bqe pickpocket canopy (link)
• co3 14mm adapter (link) (put e6000 around it to lock it in place)
• stack standoff (link)

notes

• important -------> the frame is made for aio boards that aren't square but have curved in sides. like the one from hglrc (which is out of production) in the bnf version. so when using a regular one the board touches the frame. as a result, softmounting is gone! I put standoffs under the normal ones in order to raise it above the frame. hence the long screws.
• the antenna needs to be fixed (around the housing, not the cable) to avoid oscillation windup when using a tight tune
• prop screws need to be 7mm in this motor/prop combo. 6mm only barely has one rotation for grip and 8mm might touch the windings. I just file them down with a power tool. make sure the screws on each prop are exactly the same length to not screw up balance. I've used nylon screws for weight, but I realized there's no need to tune wise and they break often.
• in order to prevent breakage I put dabs of hot glue on every point where the struts meet the ducts.
• in conclusion, the petrel85 frame is much stiffer than the mobula8, therefore it tunes way better. it also has more room around the props so you don't have to constantly bend the ducts around in order to prevent the props scratching them up. durability is about the same or slightly better than the mobula8.

pics

analog grade with resolve

---> resolve project file (last update: 10.10.2026, compatible with version 21 and newer)

---> screenshots (last update: 30.08.2026)

project file workflow

the project file includes motion blur, superview and the grade (best for betafpv co3). open the .drp file. then:

• grade
  • go to edit page, drag in your clips and copy all clip attributes from mine to your own: right click > copy, then "paste clip attributes" (select all boxes). for overall color correction I suggest white balance & tint in the film look node if needed.
• motion blur
  • go to the fusion page and make sure you see the clips (top left, tab panel). select only your clips and make a right click on the one I put in (yeah it's offline, doesn't matter) and select "apply composition".
• superview
  • superview lives in the adjustment layers. put either one above all of your clips. the one called "OSD out" morphs the corners out both horizontally and vertically. the other one does not, only stretches horizontally (for when you don't run osd). the track comes disabled, because if it wasn't you couldn't easily work on the clips underneath. so just enable it after you finished working on the grade.
• notes
  • playback isn't possible (unless you have a supercomputer). while editing for music I turn off the grade completely (the colorful circle thing above the player) and if I wanna work on the grade I'll pause and just look at still frames. for faster loading times go to playback > "timeline playback resolution" and set it to half.
  • motion blur will take hours to render. in my opinion it's important because some effects produce weird looking streaks and motion blur covers that up.
  • the timeline resolution is set to 720p in order to avoid even longer render times (which is well above analog's resolution). I export in prores and put the finished clip in a 1440p timeline for a final h.264 export. otherwise you get a bad codec when uploading to youtube.
  • for some effects you'll need the studio version. beside the usual methods it's also possible to buy an older version for cheap and upgrade to the newest release. for instance, I bought DRS 17 and I can update to this day.

example

petrel85 betaflight tune

• made for petrel85 build (it's spicy so clean builds only)
• set pid slide mode to RP for numeric yaw input
• disable the d-term multiplier slider to do the same there for all 3 values

misc

***

imprint

Christian Protte
Prießallee 66
D-33604 Bielefeld
christian@protten.com

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