Zano – Ha! You got me there. The chains are Taya all round. The first 2 years she was busy off-road during which kinks were ironed out. The next 10, she was treated like a baby. The odometer on the machine reads a mere 1810kms over this period which amounts to 1 or 2 hauls yearly at 100 to 150kms per haul.
Not much actually for all that noise, ya - but before every ride, I never fail to lubricate and re-torque with the eccentric lock bolts receiving special attention. Perhaps that’s why the eccentric held up all this while, besides as opposed to a single, twin timers take longer to stretch. I note that because of the sheer length, a stretched ‘singular’ timer is common even with the best of chains and eccentric design and on base models, I note the unsightly chain tensioner is common.
I have spoken to an engineer and he shares TandemGeek’s sentiments, in that twin timers are unnecessary, but you have to experience it to feel the difference, especially when ascending solo in rock and roll fashion. The weight penalty is not an issue.
Several years ago I modified a front rider pull trishaw for a friend and he is a happy man. He has had no stretching issues since but given that, he collects trishaws and treats them like babies but agreed that the mod was so subtle it is hardly noticed but definitely felt.
Cheers Peace Love - Tommy