Question Custom pre PTB Piranha P1 build

[Jacob BV]

I've just bought a 2nd pre PTB P1 (2015 serial 091), thats had it's battery replaced 2 years ago by a e-bike company - they didn't change anything apart from the battery. Many thanks if anyone can help with any of below

1) What were the pre PTB stats I'm struggling to find them? This new battery was made to be about 1.5 times the capacity.

2) A long term project of mine might be to pick up a 2nd hand battery section, and making my own batteries for both sections. I should be fine doing this with either a pre PTB or post right?

3) It feels like you could fit more battery in if you cut some of the battery bracket ends off, has anyone done this?

 

[sea_ledford]

I can't help with most of your question, but you might need to be careful about adding more batteries. Even if they fit, and it all works great, you might just make the whole thing negatively buoyant. Adding positive buoyancy will require adding material to the outside of the scooter to increase displacement. Depending on the amount of power gained and the amount of drag added, you might end up with a lower performing scooter than leaving it stock.

 

[Jacob BV]

I can't help with most of your question, but you might need to be careful about adding more batteries. Even if they fit, and it all works great, you might just make the whole thing negatively buoyant. Adding positive buoyancy will require adding material to the outside of the scooter to increase displacement. Depending on the amount of power gained and the amount of drag added, you might end up with a lower performing scooter than leaving it stock.

Totally agree, I'd take into account the weight wiggle room I have too - leaving some spare for trimming out.