31-05-2019, 01:11 AM
Smiley - My thoughts are that your battery box may not be any different from the original Chummy ones which were still I know being installed in 1931 Ulsters, so maybe no alterations for the RP? Unlike the ones you'll buy nowadays, the sides were tapered and secured at the bottom only, allowing you to flex in the unit until it's top flanges fitted up over the hole when installing the box from underneath. A completely assembled box the correct size will rarely fit in from above. You can then secure a flange or two to the top of the floor, but usually the fit of the battery holds the sides out to the hole edges, so not always necessary. If you're capable of bending pieces of sheet metal, why not have a go yourself? If interested, contact me on ausevenoz@gmail.com and I'll email you the necessary drawings for your DIY. Good Luck, Cheers, Bill in Oz