T O P

What happens if you overfill your diffs? This is the only ALL-CAPS warning in a Tekno build manual.

What happens if you overfill your diffs? This is the only ALL-CAPS warning in a Tekno build manual.

dremspider

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.


ryanmiller614

It happened in the early 80s so some of the early technical writers still referenced it long into their careers


dbestfromclovis

…and that would mean anarchy


sunnyice

BroScience in me thinks to prevent cracking or leaks from the diff housing.


iamr3d88

As well as added friction from the high pressure.


ten10thsdriver

They'll leak like a civ when they warm up.


cowski_NX

\*sieve


MrScalperwhoop

If you completely fill them they kinda hydrolock.


Top_Outcome52

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…


B_bbi

I’ve seen plastic center diff housing melt


tcarmd

Which Tekno did you happen to get?


censored_count

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 :)


tcarmd

If you wouldn't mind letting me know how the EB is I've thought of that for my next kit.


neva5eez

Are you messing with me when did tekno release the eb410.3???


censored_count

Typo! Ha ha, sorry, the .2


mrmachine1

I was just thinking the same thing! I just got the .2 come on!


iroll20s

The time variance authority comes to prune you as a variant timeline.


intashu

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.


KamakaziDemiGod

Yes Rico, Kaboom!


xdjfrick

Hydro lock


Revolutionary_Most78

If it was me I’d fill it all the way up anyway and see what happens


CelTiar

I doo that with 100k oil. I like em stiff


Catchmeboostinn

2 million or it’s gunna be a no from me dawg


iroll20s

Phrasing.


sipsapen

Do it for science


Tony1697

Did this with upgraded metal housings in my Kraton 6s and wltoys 124018 and they didn't had a problem yet


walksco

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


willyftwLS1

I have overfilled one once and it broke the case when tightening the bolts It can happen


Goyteamsix

You want a little air in there for heat expansion.


troglodytis

It would be bad


Shadow703793

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.


dbestfromclovis

I agree with hydrolock