el_taco

truck...01 taco with a j-shift t-case.

simple question despite ALL the talk about how much more "stronger" a geared t-case is to a "chained" t-case on the newer trucks...

are the "geared" t-cases THAT MUCH MORE "stronger" than the "chain-driven" t-cases???

i read only one response that the "chain" t-cases are just as strong, if not stronger than the "geared" t-cases because there seems to be more "brokened" "geared" t-cases than "chained" t-cases on the trails.

thank you for your time.

vital22re

iTrader: (2)

chains stretch and gain slop which leads to vibration and clunks and not so fun times.

DeathCougar

iTrader: (23)

Most of the reason geared cases are so popular, besides being so simple, is because you can gear them down and use them for doubler cases.

904_runner

Exactly..

vital22re

iTrader: (2)

is true, chains cant' be modded for crawling..

AxleIke

Assuming I understand whats written above, as its close to english, but not quite, the answer to your questions is that more people are running geared tcases with large tires and big power, which results in more broken parts.

The chain cases are just fine, but they cannot be geared, and are indeed weaker than the geared cases. From what I've read, and I could be wrong, but supposedly the geared gases, by the virtue of using gears, have multiple mount points down the 4wd part of the case. By that I mean, each gear is supported in the case by a roller bearing, and this distributes the load better along the entire case.

In the chain drive case, again, I'm going off of what I know of gear drives and what I've read about chain drives, so bear with me, but in the chain drive case, you essentially have two "cogs" that the chain goes on, to give power to the front output shaft.

Because of this, while the force is the same between the two types of case, the load is concentrated in 2 places, and leads to failure at lower loads.

Clear as mud?

Gerdo

I wouldn't get too concerned about the chain drive transfer case. There are tons of people running big tires and doublers with the chain cases without problems.

dropzone

iTrader: (6)

isn't their second case a gear driven one?

DeathCougar

iTrader: (23)

The doubler case HAS to be a gear driven one. There is currently no chain driven doubler. The 2nd case is the transfer case (and can be chain or gear), where as the first case is merely the doubler or "crawl box" (and has to be gear)

To the OP: Marlin has all this info on his website, as does AA and Inchworm