SKU: 35140448336

Ummagawd Botgrinder Grinderino 3.5" Freestyle Frame Kit

Sale price$40.46 Regular price$44.95
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Ships within 48 hours · Estimated delivery Oct 1 - Oct 6

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Description

Ummagawd Botgrinder Grinderino 3.5" Freestyle Frame KitIntroducing the Grinderino. If you love your Demibot, but wish you had one that's juuuust a little smaller, your wishes have been granted! When Botgrinder asked if we can make him a 3. 5" frame, he said he wants something just as good as the Demibot but in a smaller package. It took a bit of adjustment, but I think we hit the mark. As for flight controllers, this frame will fit a single board whoop style AIO, or a 20 x 20 stack. The rear of the frame

Introducing the Grinderino.

If you love your Demibot, but wish you had one that's juuuust a little smaller, your wishes have been granted!

When Botgrinder asked if we can make him a 3.5" frame, he said he wants something just as good as the Demibot but in a smaller package. It took a bit of adjustment, but I think we hit the mark. As for flight controllers, this frame will fit a single board whoop style AIO, or a 20 x 20 stack. The rear of the frame provides plenty of space to fit a VTX of your choice, and just the same, the front will accommodate any camera. We've provided motor mounting holes to fit our Ummagawd Aerolite 1605 3600kv motors, as well as a standard mounting pattern for any other motors you might like to run.

And if you were curious... Yes, this is less than 250g all up weight!

UPDATE: The Grinderino arms are now compatible with 9x9mm motor mounting!

You can find all the related parts in the Botgrinder Grinderino 3.5" Frame & Parts Collection.

Also check out all our 3"/3.5" Frames and the rest of our Ummagawd Products!

Specifications:

  • Arms: 4mm
  • Top Plate: 2mm
  • Bottom Plate: 2mm
  • Mid Plate: 2mm
  • Standoffs: 6mm OD 7075 Aluminum
  • FC Mounting: 20x20 and 25.5x25.5 (whoop style)
  • VTX Mounting: 20x20 and 25.5x25.5 (whoop style)
  • Frame Weight: 65g
  • Motor Mounting Pattern: 12mm x 12mm and 9mm x 9mm

Package Includes:

  • 1 x Top Plate
  • 4 x Arms
  • 1 x  Bottom Plate
  • 1 x Mid Plate (with press nuts)
  • 1 x Hardware Kit
  • 1 x Ummagrip Battery Pad
  • 2 x Battery Straps
  • 1 x Set of TPU FPV Camera Mounts

Downloads:

Grinderino Assembly Guide

 

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
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    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
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    SKU: 35140448336

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    ★★★★★ 5
    Great watch!
    I like how thin & lightweight it is. The blue numbers makes the watch more appealing!!
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    Reviewed in the United States on July 8, 2019
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    Fort Morgan, US
    ★★★★★ 5
    Just what I wanted
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    Reviewed in the United States on August 11, 2019
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    DrEAM
    Dallas, US
    ★★★★★ 5
    Super soft, runs small, long tail
    High quality, super soft, good neck height, nice price, ready to go right out of the dryer, medium thick material, works well under a sport coat or sweat shirt, snug fit--runs about one size small. Length is about four inches too long. So, ideally made for tall and skinny people (I am short and thick), but going one size up works fine for me except have to tuck it in due to the length.
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    Reviewed in the United States on December 26, 2025
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    Gabriel King
    Dallas, US
    ★★★★★ 5
    This shirt is a cheat code
    Color: Black, White, Navy Blue, Light Gray, Size: XX-Large
    These shirt fits my body so perfectly! I’m 6’5” 310 pounds but I look 260 pounds. I sweat easily and I’m very sensitive to the material a piece of clothing is made of. This shirt is lightweight, extremely breathable, and feels like silk on the skin. It compliments and accentuates my contours to enhance my physique. I only tried on one and I’ve already ordered 12 more hehe. This is a cheat code.
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    Reviewed in the United States on November 24, 2025
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    bigness
    Battle Creek, US
    ★★★★★ 4
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    Reviewed in the United States on May 29, 2026

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