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Thread: Obligatory First Featherweight Build Log (FeatherDozer)

  1. #31
    Wow! Thank you for the very high praise

    Yes, FeatherDozer (I still hate the name) would probably be better as a low, 4WD lifter, but I wanted a design as compact as possible and look a bit different, hence the 2WD. The next design (many ideas and designs in progress) will be an evolution of FeatherDozer to hopefully take on the big featherweight spinners.

    As I decided to do the write up here, I could go slightly more technical as I have seen in other build diaries. Plus I've had plenty of practice writing technical reports due to my job.

    I hope we can get back to fighting in the near future.

    Thanks again to all for your kind words
    Last edited by Sam_Gad; 1st February 2021 at 15:05.
    Sam Gad

    Learn the hard way Robotics

  2. #32
    .....And we are back!

    After 4 months of not posting on this thread I am finally heading out to another event (Robodojo May event).

    Only a quick update today.

    In this time the only aspect I have changed is my team name. The previous team name (just Send it Robotics) was a good start but is a little bit too generic for my liking. The new team name is Learn the hard way Robotics.

    Once this event is complete, I will have a better idea of the direction I want to take with FeatherDozer for the rest of the year. This could include weapon upgrades, drive motor changes and additional protection where needed (I'm looking at you drive gears....).

    For now, here is the recently repainted FeatherDozer ready to head up north.

    Last edited by Sam_Gad; 30th May 2021 at 11:44.
    Sam Gad

    Learn the hard way Robotics

  3. #33
    Ocracoke's Avatar
    Team Kaizen

    Looking good as always, hope you do well in the May RoboDojo event!
    Team Kaizen - Build Diary for all the robots

    AW: Amai, Ikari, Lafiel, Osu, Ramu
    BW: Shu!, The Honey Badger
    FW: Azriel
    MW: Jibril, Kaizen

  4. #34
    FeatherDozer looks great as always!

    Well excited for tomorrow now, hopefully we get the chance for a good scrap!

  5. #35
    Great to see this machine in the (robotic) flesh Sam, really nice piece of work. Hope to see you at the next one too!

  6. #36
    Event 3 - Robodojo 31/05/21

    It’s been a while!

    In the time I have not been posting, 2 events have come and gone for FeatherDozer.

    Due to other commitments, I will be unable to attend either Robodojo Sportsman events in August so what better time to get up to date with this build/ event/ blog diary. As before, I will evaluate each event as well as any repairs/ changes towards the fading path of combat robotic perfection (FYI there isn’t one otherwise things would get very dull, very quickly).

    The first event of the year for me was Robodojo Sportsman 31/05/21. The event videos can be found on the Team Tilly YouTube channel. Thank you Shane for recording and uploading the videos!

    I thought I would slightly adjust my event summaries based on how well the changes made between events faired up against real testing/ combat.

    Relay & link outer protection

    These were a great success! They took direct hits from Hells Angel 2 that could have rendered the bot/weapon immobile but did their job. They also helped to tuck away the link from most overhead attacks which is an added bonus. Though, in future events, I will probably bring spares as they are intended to be sacrificial. The image below is the best hit they took which really showed how affective they can be to protect one of the major possible failure points.


    New drive speed controllers

    Put simply, driving FeatherDozer was a real joy to drive during this event. Taking the time to dial the drive made a world of difference, which meant that I could go on that attack and play to the robot’s strengths. Practice is still required (the first fight with no barriers against Panda is proof of this), but I found that running the current setup on 4S works well with these BLHeli_S ESC’s.

    New Lifter motor

    This upgrade was relatively underwhelming to be honest. Yes, the weapon was slightly faster and had the power but it is still too slow which resulted in a number of judges decisions which could have contributed to being placed 6th for the day (Still very good points though!).

    Damage during event

    Over the course of the event, FeatherDozer did sustain its first non-superficial damage during the closely fought fight with Hells Angel 2 (which ended in a close judges decision win for me). I also realise that I had foreshadowed myself as an axe blow to the left side drive gear resulted in significant tooth damage to both the motor pinion and drive gear. However, the whole drive assembly is a live axle retained by a nyloc nut. This nut had sufficient play to shift the assembly meaning that the gears could still rotate to complete the fight. After the fight I had to take the drive side off and hand file the material away to continue the event.

    PXL_20210531_112339075.jpg PXL_20210601_100249579.jpg

    The very last fight of the day for FeatherDozer was against Red Hot 2 (again). Midway through this fight some of the drive gremlins returned to the already damaged left side which worked the motor and ESC so hard that the ESC melted the protective heatshrink around it. Though this was a worry, everything was still fully functional and is still used in the robot today (with new heatshrink).


    So, all-in-all, a great start to events in 2021! This also helped to determine the way forward for upgrades etc.

    In the next entry (which will be ASAP) I will go through repairs, upgrades and bad decisions building up to the next dojo at the end of June.

    Sam Gad

    Learn the hard way Robotics

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