Anyone had a chronic chain stretching issue? If yes, what was the culprit and how was it resolved?
Scenario: My brother and I race together and he’s had a run of like 3 chains in as many weekends that have stretched to beyond acceptable spec in the span of a single weekend / event, it needs adjusted pretty much every session and it’s ruining sprockets at the same time with them looking like spikes not spokes.
I’ve run the same chain pretty much the whole year and it stays consistent and it’s well within spec. We’re lost as to why he’s seeing this issue.
Both on 2021 chassis
Both using DID gold chains
Both using a similar cleaning and lubing procedure
Using extremely similar lube (same brand he’s actually using the fancy stuff).
Both with same engine mount setup
Both using “snubber” on engine mount to keep it in place.
Both using laser alignment tool measuring alignment at 3 places on the sprocket.
What’s different. I have a different sprocket carrier but it’s because I destroyed in an “off” and had to buy what the track side support had, he’s on the OEM carrier
…that’s about it. He’s using a bit more rigorous cleaning routine between events? Not sure that’s a “problem”.
We even set the tension together on his kart before going out for any sessions this past weekend and by the end of session 4 (warmup, warmup, 3 lap qualifying, race) the chain was all stretched out.
There was a thought that maybe it was the clutch assembly on the engine…but the engine this past weekend was my backup so it’s not the one that’s usually on there.
We’re at a loss and all ears for what could be going on.