A separate post shows the battery housing making for Polar Viper.
Polar Viper modified into an electric bicycle – gallery

I do my best to reply to any questions as soon as I manage.
If you need an answer urgently - within a day or two instead of a week or two (or you just wish to support my work):
By paying $8, you’ll get a priority reply (your question gets to be the first in line):
Link for “buying” the priority support
