This video shows how to refurbish the three Spin Trip Assembly bellows in a Blue Box Link Trainer. This technique can be used to refurbish any of the small, hinged bellows in a Blue Box trainer.
Bob & Ron's vintage Link Trainer (aka Blue Box) restoration adventures
This video shows how to refurbish the three Spin Trip Assembly bellows in a Blue Box Link Trainer. This technique can be used to refurbish any of the small, hinged bellows in a Blue Box trainer.