B4 Lipo fitment

[sosidge]

I wonder what some of you are doing to get the slightly larger BRCA-legal LiPo packs into the B4 neatly?

I've finally switched to LiPo with an Intellect 5000mAh pack (same pack as many other brands).

Unfortunately this pack is just a tiny bit tall to fit under the rear shock tower - probably a mm or less in it, but just enough to stop the cells from going all the way back and to stop the carbon strap from fitting properly.

So what mods are you doing?

I've narrowed the options down to...

1) Grind the locating bumps down (which I don't want to do)
2) Trim the rear shock tower (wary of weakening it)
3) Change the strap to an extra thin one (needs to be 0.5mm by my reckoning which is too thin to be effective!); cut down the existing strap so it only braces the front of the cells; or lay the rear of the strap across the top of the tower
4) Something else?

Changing the LiPo is not an option.

I can see how the LRP-style packs work so well, if I flip the Intellect pack it fits perfectly under the strap, only problem is there is no easy way of unplugging it!

[Mike Hudson]

Shave a few mm off the rear tower, it's not really a weak spot on the tower tbh if it's going to break it's almost always near where the shocks mount on them

[bigred5765]

we shaved a few mm of the rear shock tower and the battery strap as well,,

[bodgit]

If your not too keen on grinding any material away why not just shim the shock tower. That way if you ever use a smaller battery you still have the origional gap as an option.

[Scouser]

I am running a brass weight under my Li-Po so my problems were even worse!! The way I got round it was to take a palstic battery strap, cut the very end off and bond on a kinked piece of plastic that drops down behind the cells and under the shock tower. This only works if you wish to run your cells in the forward position. Fortunately I always run them in this position so this solution works really well.

[Cooper]

Originally Posted by bodgit

If your not too keen on grinding any material away why not just shim the shock tower. That way if you ever use a smaller battery you still have the origional gap as an option.

and altering the shock position height.. not a very clever solution.

[bodgit]

Originally Posted by Cooper

and altering the shock position height.. not a very clever solution.

It does but when you have three optionional holes positions to choose from it wont matter that much