Decisions had to be made as to the direction the design would take – was the airbox going to:
- cover both carbs and be one long box,
- two smaller boxes which had induvidual filters
- two smaller boxes connected by piping which went to a larger air-filter situated somewhere to get cool air.
I initially decided that two smaller boxes would be easier to fabricate and design and that combining the piping would allow me to get cooler air (always a bonus), be slightly cheaper (only one filter to buy/change) and easier to maintain (less fiddly to attach I think). However, when I started to think about it, having one long box would solve a lot of my problems. Firstly I wouldn’t need to join two pipes as the box would only have one entry and secondly when I needed to get to the carb-mouths it’d just be one box I’d need to remove.
The first thing to do was decide on exactly how much space I have to play with so referring back to the engine picture