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MK1 YoYos x Spinworthy Red Blood Cell (RBC) - Clear
Exhibit #4362
TypeProduction
ShapeSpecialty
AxleBearing
FinishAnodized
ColorClear (silver)
PackagingDisplay Boxed
ConstructionMulti-piece aluminum
Diameter55mm
Width34mm
GapFixed
Gap Width2.3mm
Weight48gm
ConditionMint
Date2022
OwnerRick Brough
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The Red Blood Cell or RBC, is a lightweight, hollow-bodied yo-yo made out of 7068 aluminum and designed for original (responsive) play. The RBC actually started out in early 2020 as a wooden, fixed axle yo-yo made by the maker Spinworthy Yo-Yo, based out of Australia. It debuted with the name Blood Cell and was released in very small quantities. MK1 YoYos came along in 2021 and took the original Blood Cell design and worked with Spinworthy to adapt it to an aluminum body with a ball bearing axle.

The RBC uses an uncommon axle size, ball bearing, and response pad size.

From MK1 YoYos:
"Rather than using an A sized bearing, we decided to use a smaller MR85 bearing that is only 8mm in diameter, the same as the wooden axle in the original wooden Blood Cell. This bearing combined with the same gap width as the original is intended to replicate the ideal play characteristics of fixed axle yo-yos with the smoothness and power of metal. The result is a very reliably responsive yo-yo, even with a dry bearing."

Released August 19, 2022

Recipe
Grade: A
Diameter: 55mm
Width: 34mm
Weight: 48gm
String gap: 2.3mm
Material: 7068 aluminum
Axle: M3 × 12mm
Bearing: MR85 (5mm x 8mm x 2.5mm)
Finish: Anodized matte, clear (silver)

Original retail price: $85

See also these other A-grade RBC versions.
• Red Blood
• Gold (Rhnull)
• Watermelon (Low HP)
• Blue Blood
• Clear
• Black (Unknown edition)
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Content by David W. Hall & Rick Brough