Rear dropout chain keeper — 3D-printable model preview

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Car & bike Advanced

Rear dropout chain keeper

Keep the chain tensioned with the rear wheel out

Clamp it in the rear dropouts with the quick-release skewer when the wheel is out: the chain sits on the 42 mm toothed drum, stays tensioned and can be cleaned and lubed with the pedals turning, and the frame never gets chain slap during transport.

Customize this model

Size (Base A): 42 × 42 × 10 mm
Shape: Gear-shaped
Walls: 3.0 mm
Volume: 18.5 cm³
Est. weight (PLA): 22.9 g
Parts to print: 1
Category: Car & bike
Made by: Krypto
Built in: 36 steps

What’s in it

Gear-shaped, 42 × 42 × 10 mm, with 3.0 mm walls
4 holes in the floor
3 more bases built on (Bases B–D)
Base B: gear-shaped, 42 × 42 mm (stacked)
Base C: round, Ø 14 mm, 100 mm tall (stacked)
Base D: round, Ø 14 mm, 20 mm tall (stacked)

How to print it

PETG. Sized for 130 mm road dropouts; add a washer for 135 mm.

Prints as shown on its floor, no supports. Stacked parts are fused into one print.

Filament: at most about 22.9 g of PLA printed solid (roughly $0.46 at $20 per kg); normal infill uses less.

To get the files, open it in the generator and choose File › Download STL (one file per part) or Download 3MF (every part on one plate).

Questions

What size is the rear dropout chain keeper model?

The rear dropout chain keeper model measures 42 × 42 × 10 mm (width × depth × height). That is Base A; 3 more bases are built on. You can change every size in the free SO3D.xyz generator before you download it.

Does it need supports?

No. PETG. Sized for 130 mm road dropouts; add a washer for 135 mm. Prints as shown on its floor, no supports. Stacked parts are fused into one print.

How much filament does it use?

At most about 22.9 g of PLA (18.5 cm³ printed solid), roughly $0.46 of filament at $20 per kg. Normal infill uses less.

Can I change it?

Yes. Open it in the SO3D.xyz generator (free, in your browser), change the size, walls, dividers, holes, text or anything else, then download it as STL or 3MF for your slicer.

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Make it fit your space

Change the size, walls, dividers, holes and labels of the rear dropout chain keeper model in your browser, then download it for your printer. Free, no CAD needed.

Customize this model