52v Panasonic 17.5ah Jumbo Shark Pack - relocating the mounting holes

[ncmired]

I'm interested in upgrading to the 17.5ah Jumbo Shark Pack, but don't know if it's possible to relocate the mounting holes (as it is on the standard shark pack). The water bottle mounts are rather low on my frame, and I'm fairly sure this pack won't mount up as it is.

It's hard to tell from the picture & diagram:

[OptimusPrime]

I'd bet it's empty in there just like the shark. Supposidly that area is for a controller in some applications.

[Buckwheat]

I just installed the same battery on my bike last week. My bottle bracket mount was too low also. I drilled new holes into the battery bracket to line up with the existing mount, & installed riv nuts into my frame further above & below the existing mount. Here are pictures of what I did.

[tonk]

Here's another option https://mountskidmore.com.au/shop/ad...-cage-adapter/

This appears to be an Aussie company but a search might get you one made in the U.S. Hmm here ya go https://www.amazon.com/Shimano-SM-BA...e+Cage+Adapter

[OptimusPrime]

Here's another option https://mountskidmore.com.au/shop/ad...-cage-adapter/

This appears to be an Aussie company but a search might get you one made in the U.S. Hmm here ya go https://www.amazon.com/Shimano-SM-BA...e+Cage+Adapter

The problem I see with those it that they move the mount away from the down tube and so you lose the support afforded by contact with the frame. I think rivnuts or well nuts are the way to go.

[tonk]

Good point

[PatrickGSR94]

Because my battery cradle doesn't make full contact with my frame, I bent a piece of aluminum bar to attach to all 4 bottle cage mount points, both down tube and seat tube. That should help keep the battery steady. A similar solution could work with the bottle cage relocate piece.

[ajprice]

The available mounting holes in the plate for the jumbo shark pack don't line up with the bottle cage bosses on any bike I own - a dozen bikes spanning 25 years, road and mountain frames: Trek, Specialized, Fuji, Bianchi, Kestrel, Black Mountain Cycles. All the bottle bosses are in the same place with little variation - the lower one is a bit over 7" from the seat tube, and the holes in the battery plate are far higher than this.

So after a bit of head-scratching, I fabricated a custom adapter from a piece of oak. Photos below.

[PatrickGSR94]

i had thought of something in wood myself, and still might later. Do you have a drum sander of some kind? You could try making the length of the wood against the tube concave to match the wood curvature.