Centrevillemx
NAXJA Forum User
- Location
- MD's Eastern Shore
Exactly what is a portal axle? From what I 've heard its pretty state of the art. But I have no clue what it is.
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Portal Axles?
- Thread starter Centrevillemx
- Start date
Portal axle being state of the art? <grin>I don't think so, Tim! </grin> They've been around for years.
The usual run-of-the-mill axles have the axle shaft running in the axis as the wheel, i.e. the wheels bolts directly to it.
In a portal axle, there is a gearbox out at the end of the axle tube. The axle turns a gear in the top of the box, which drives a gear (usually larger geting additional reduction) that has a hub on the outside.
So, what does this mean in English? The axles (and by extension, diff) get mounted higher in a portal than in a standard axle. You get more ground clearance, and usually some killer gears. Unimog axles are the best known, although Volvo has a few that are lighter.
Dad's harvester tractor back home has a goofy portal axle setup; he bought it in 1967.
The usual run-of-the-mill axles have the axle shaft running in the axis as the wheel, i.e. the wheels bolts directly to it.
In a portal axle, there is a gearbox out at the end of the axle tube. The axle turns a gear in the top of the box, which drives a gear (usually larger geting additional reduction) that has a hub on the outside.
So, what does this mean in English? The axles (and by extension, diff) get mounted higher in a portal than in a standard axle. You get more ground clearance, and usually some killer gears. Unimog axles are the best known, although Volvo has a few that are lighter.
Dad's harvester tractor back home has a goofy portal axle setup; he bought it in 1967.
Rev Den
NAXJA Forum User
- Location
- Plainfield, IL
Rev
LRRH
NAXJA Forum User
- Location
- South Cheeseland
check out this page....this discussion has been going on over at the IFSJA.
http://www.ifsja.org/ubb/ultimatebb.php?ubb=get_topic;f=2;t=020674
http://www.ifsja.org/ubb/ultimatebb.php?ubb=get_topic;f=2;t=020674
Dazz
NAXJA Forum User
- Location
- DFW, Texas
- Location
- San Bruno, CA.
9" center section turned upside down with MOG portals on the ends...
Jes
Jes
Centrevillemx
NAXJA Forum User
- Location
- MD's Eastern Shore
O Ok yeah I have a set of those n my new Holland Tractor. Thanks for clearing up my confusion
- Location
- Terra Firma
Centrevillemx said:
So ... I guess you have your winter swap project all lined up, right? :jester:
Centrevillemx
NAXJA Forum User
- Location
- MD's Eastern Shore
Eagle, Could that be Done? I came down hard on a rock with that tractor(weighing 5000+ lbs) right on the pumpkin and all it did was smile. Other than the fact that it is desinged to be run at a max of 15 miles per hour It handles big tires and heavy loads really well. One of the trucks In the Four Wheeler Mags Top Truck Challenge had those(3/4 ton I believe) and it was running 52's!
With a bolt change on the Hub I think it could work......
With a bolt change on the Hub I think it could work......
vintagespeed
NAXJA Forum User
- Location
- Upland, CA
Hell, VW buses prior to '68 all had portal axles. Hehe, new hi-tech yeah right. =)
justin d zaharko
NAXJA Forum User
- Location
- portland oregon
9 in portals ?????
wasnt ther a tech article in 4 wheeler about highbrid 9in centers with portal ends being built int the usa????
Who is building them?????
wasnt ther a tech article in 4 wheeler about highbrid 9in centers with portal ends being built int the usa????
Who is building them?????
