Attached are pictures of the exhaust box and the detail. The existing chain is 1.3mm thick wire. And it expands due to heat and load. We are having alot of problems with this chain. We wish to upgrade the design by installing chain type wire belt to take load and tension away from the chain.
The front and back roller diameter is 250mm and thus this would be replaced with 250mm sprocket. And the chain will be guided with 25mm sprocket throughout the exhaust box.