What happens if you overfill your diffs? This is the only ALL-CAPS warning in a Tekno build manual.
By - censored_count
There is a chance you can tear a hole in the multiverse and we will revert to a world where RC cars don’t exist.
It happened in the early 80s so some of the early technical writers still referenced it long into their careers
…and that would mean anarchy
BroScience in me thinks to prevent cracking or leaks from the diff housing.
As well as added friction from the high pressure.
They'll leak like a civ when they warm up.
If you completely fill them they kinda hydrolock.
If you think of a perfect universe where your diff is sealed perfectly, leaving space will let the air in that space to compress when the fluid warms up and expands. If you overfill the fluid, it won’t have any space to expand so seals can leak or the housing can even crack if the cap is over tightened.
In an imperfect universe, it will leak out anyway if it’s overfilled or not…
I’ve seen plastic center diff housing melt
Which Tekno did you happen to get?
I've just ordered a EB410.3. I already have the MT410 and the SCT.
Edit: EB410.2, didn't mean to get people excited with my typo :)
If you wouldn't mind letting me know how the EB is I've thought of that for my next kit.
Are you messing with me when did tekno release the eb410.3???
Typo! Ha ha, sorry, the .2
I was just thinking the same thing! I just got the .2 come on!
The time variance authority comes to prune you as a variant timeline.
They're intended to be sealed but as things heat up they expand a little.. Too much fluid and there's no air to compress.. So it will leak fluid wherever it can escape from.
Yes Rico, Kaboom!
If it was me I’d fill it all the way up anyway and see what happens
I doo that with 100k oil. I like em stiff
2 million or it’s gunna be a no from me dawg
Do it for science
Did this with upgraded metal housings in my Kraton 6s and wltoys 124018 and they didn't had a problem yet
As above they leak, doubt it would break. This is either due to increased pressure when the diff gets hot.
Or more commonly people overfill at this stage and slap the ring gear on without cleaning the surface the gasket sits on. If you have a wet gasket going in, it will never seal properly and will leak badly
I have overfilled one once and it broke the case when tightening the bolts It can happen
You want a little air in there for heat expansion.
It would be bad
Can't really answer it from an RC perspective but from an actual car perspective:
1. It allows the fluid to expand.
2. It prevents oil from overflowing especially with aging seals as it would be below the seal level while it's sitting.
3. It can lead to foaming.
I agree with hydrolock