Lister CS 6/1 and 10/2 fly wheels

[michiel]

Hello,

At the moment, I am running a 6/1 with an ST5 genhead.
It is an ex SOM (No.21136110) with the twin grooved heavy 24" flywheel.

After a long search I have now found an 10/2 (No 14854)
This has the lighter spoked wheels.

I now want to use this engine in my CHP setup, and get more hot water and utilise the ST5 better. Easiest would be to just change the flywheels over. Would this give me balancing issues though?

It has been suggested to me that alternatively I could change the pulley on the ST for a serpentine one, and run an 6-8 rib automotive belt.
Apparently the belt should not wander off the flywheel?

I run the setup grid-connected through a sunnyboy GTI, so V and Hz are not crucial.

BTW, the engines have run now for over 2000 hrs happily on WVO.

[Trevor A Cole]

The single cylinder flywheels are designed to balance the single cylinder engine and the twin flywheels are designed to balance a twin and they are therefore completely incompatible for obvious reasons if you look at the balance masses in relation to the key irrespective of the more minor issues of size,shape weight etc. They must not be swapped.