Triple Bob

The Triple Bob rail provides for a convenient and secure means of attaching a Hailong-1, 21700, and Reention case Downtube battery to any any location on the bicycle frame tubing regardless of the eyelet position.

These pieces are CNC machined from solid aluminum stock and provide a wide and flat platform for the battery cradle to rest, secured with three M5 bolts so there is none of the rocking or play that is sometimes present with water bottle eyelets. Machined channels allow up to 4 hose clamps to keep the battery tightly in place, and comes with heat shrink for hose clamps. Designed and made in Canada by Grin Tech.

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Our most popular battery rail has 3 raised bosses for attaching the battery cradle and is compatible with all Reention downtube batteries, Hailong-01 batteries, and other models with 3 slots in the mounting rail. These batteries are often called "shark" "Jumbo Shark" "Whale Shark" etc. by resellers but not with any consistency so best to look at the picture to compare. The Triple Bob can be secured with existing water bottle bolts on your frame for a clean interface, or attached virtually anywhere with 2 or 3 hose clamps through the recessed slots.

Installation

1. Hose Clamps

   We provide two hose clamp sizes to span ?? to ?? tube diameter, as well as a plastic shrink tube sleeve to cover the metal band and protect the paint from scratches. To use this product, first cut the shrink tubing to size and slide it over the band. In order to make it impossible to remove the hose-clamp when the battery is installed, be sure to have the hose clamp screw mechanism at the top so that it is inaccessible once the base plat is installed.

2. Existing Eyelets

   It's also possible to mount the Double / Triple Bob's using the existing eyelets on the frame. We include two low profile M5 screws that can mount in one of 4 positions to place the Bob in a good location. This provides for a very clean installation, and is vastly more stable than mounting the battery itself directly to the they same eyelets. That's because our rail is machined with a contour that straddles the tubing to make wide points of contact rather than just the tiny area around the bolt.

3. Front or Rear Rack

   Finally we also produce a "Rail Anchor Kit" that has specially machined clamping blocks to secure the batteries to existing racks. These clamps have a grooved slot that straddles the tube diameters commonly used in bike racks, and provide battery mounting options over your front and rear wheels as well.