I've recently fitted an X2's petrol tank on my Kanguro X. I did this to reduce the risk of running out of petrol on the MCC long distance trials that include riding through the night and day as I ran out on the Lands End Challenge in Easter 2024 because one of the petrol stations on the route map was closed and the next one was over 60 miles away on the route of the challenge. I have a large capacity fibreglass tank made for the X and X1 models however modern petrol seems to eat through these tanks so that wasn't a realistic option for me. I thought it might be worth providing a summary of the differences in capacity of the various models based on my experiences owning several Kanguros.
Small: The X's petrol tank holds close to 10 litres, it's also used on the X1 model. It includes a 'reserve' of roughly 2 litres. I found I could ride for up to 200 kms between refuelling. For the Lands End and other long rides I carry a small extra fuel container with either 2 or 4 litres.
Medium: The X2 tank holds close to 14 litres. I discovered through experience that I need to fit a pair of fuel taps that include main and reserve positions to give me advance warning on my X that I'm about to run out of fuel. The X2's manual fuel tap includes a fuel level sensor however I don't have a suitable indicator light or the wiring on my X (I might add the light and wire it up at some point). The X2's tank includes a vacuum operated tank but I'd replaced this with a reserve/reserve tap as I happened to have it available when I wanted to try using the tank. I didn't want the complexity of plumbing in the vacuum operation.
Large: The fibreglass tanks might hold up to 20 litres. If I could find a way to have a metal lining or inner tank I'd be willing to use one - I'm not keen on the epoxy-based fuel tank 'liners'.
X-Large: The X3 models have a very large capacity of around 22 litres. Personally I found my X3 felt top heavy when full of petrol, especially as the 12V battery is bigger and heavier than those fitted to the earlier models (X/X1/X2) and located to the top left of the petrol tank.
Personally I reckon the X2 tank is a good compromise with a pair of main/reserve taps. It provides 40% more capacity than the tank of the X/X1 and can be fitted to the earlier model - I'll write this up in a separate forum post as I made a pair of front mounts for the X2 tank. I'd also prefer to fit an X2 tank to the X3 and use a smaller, lighter lithium-ion battery in place of the default 12V battery.
PS: My measurements are empirical and approximate; you're welcome to correct inaccuracies. My main goal is to be able to ride longer distances where there may not be many options to refuel without risking running out of fuel entirely.
