NP205 GEARING OPTIONS FROM OFFROAD DESIGN
Resource from: NP205 GEARING OPTIONS FROM OFFROAD DESIGN Likes:210
Aug 16,2017
Big tires and big obstacles can rob you of torque, traction, and possibly wheel speed. Changing axle gear ratios can help and is most often done to restore reasonable gearing for on-road driving with tire sizes that are much larger than stock. While this does help on the low end for wheeling as well, sometimes it is beneficial to have far deeper gearing when playing in dirt and boulders. Super-low gearing can provide you greater control over obstacles, prolong the life of clutches and transmission parts, and give you more slow-speed traction since the drivetrain can provide a more consistent power delivery to help tires resist breaking traction while crawling.
Offroad Design (ORD) has developed several solutions to give people running a New Process NP205 T-case the ability to run lower T-case gearing. The venerable NP205 is generally considered to be bulletproof and was installed in a variety of fullsize vehicles from Ford, Chevy, Dodge, and International Harvester ranging up to 1-ton trucks.
The ORD kits essentially add a second high/low gear reduction placed between the transmission and the NP205 T-case to provide additional low gear ranges. With the added front gear reduction, you can now run in 2WD low range with that ratio. The kits can be added to almost any domestic transmission, either directly or with an adapter. Another benefit is the ability to clock, or rotate, the T-case as needed for ground or chassis clearance. The company’s two kit choices are the Magnum Box and the Doubler.
The Magnum box proves a relatively compact, add-on planetary reduction unit in a cast aluminum housing that effectively makes your T-case a four-speed unit. A six-pinion planetary provides a 2.72:1 gear reduction to combine with the factory 1.96:1 low-range ratio of the NP205. In the end you get standard 1:1 high-range gearing, the two individual midrange reduction ratios (2:72:1 and 1.96:1), and a compound 5.33:1 crawling gear when you run both reductions in low range.
The components in the Magnum Box are designed to be stout enough to use the T-case in any gear mode without worry of breakage downstream of the gear reduction in the planetary. The intermediate shaft (new NP205 input shaft) used is oversized to accommodate the torque that additional gear reduction adds. The box bolts directly to GM/Dodge Figure 8, GM round-pattern, or Ford NP205 T-cases with no additional adapters.
The Doubler kit places a gear reduction unit (front range box) from an NP203 between the transmission and the NP205 using a billet aluminum adapter plate and a custom output shaft. It is a bulkier solution than the Magnum Box but also more economical. In the case of the Doubler setup, both reductions are nearly 2:1 so you don't get quite as much gearing flexibility as you do with the Magnum. In fact, ORD recommends you not use low range in the NP203 while using high range in the NP205 to avoid the possibility of breaking the intermediate shaft. In effect, the Doubler can be considered a three-speed T-case system.
In either case, ORD can provide T-case parts and kits for the DIYer or build a complete T-case system to your specifications to include shifters, heavy-duty shaft and yoke components, and other upgrades. The work of installing a kit can be done in a home garage with common mechanic’s tools plus a high-quality set of snap-ring pliers.
(NP205 GEARING OPTIONS FROM OFFROAD DESIGN)
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1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"CBCC".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
4.If the news we published involves copyright of yours,just let us know.
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