Lo ngumbuzo esiwubuza rhoqo. Ufuna ukuthenga i ivili lesihlanu, kodwa awufuni ukuthenga ilori entsha, okanye uneliso lakho kwilori kwaye ufuna ukwazi ukuba inokusingatha i-RV oyifunayo. Yifumane ngokupheleleyo, ke makhe sijonge indlela yokufumana oku!

Ngayo nayiphi na ilori, kukho amanani amabini ekufuneka ekhathalelwe ngokutsala: umthamo wokutsala kunye nomthamo wempahla. Ngokwenyani, amanani amathathu, kodwa siyakufika kuloo nto.

Ukutsala Umthamo

Eli nani lisekelwe malunga ne-injini kunye nokudluliselwa. Yimalini ilori yakho inokutsala (kwaye ime) ngokukhuselekileyo. Eli nani linokufumaneka kwiitshathi zokutsala ngolu hlobo: www.fleet.ford.com…
To find yours, simple google “towing charts for YEAR and MODEL”.

Uya kufumana imodeli yakho kunye negridi, ebonisa isitayile selori, injini, kunye ne-axle ratio. Layisha ezi phezulu kwaye kukho umthamo wakho wokutsala. Ilula kakhulu. Isizathu sokuba la manani apapashwe kwitshathi efana nale kunyaka ngamnye wemodeli, linani elifanayo kungakhathaliseki ukuba zeziphi iinketho (ngaphandle kwe-injini kunye ne-gear ratio) ezifakwe kwilori.

For this exercise, we'll look at a 2017 F350 Super Duty (6.7L Power Stroke) SRW (Single Rear Wheel) 4×4 Crew Cab 8′ Box with a 3.55 Axle Ratio. From the link above, we find this:

Inani eliphawulwe ekunene ngumthamo wokutsala, kodwa ukuba ubona i (4)(5) kwaye ujonge amanqaku, uya kubona ukuba i-18,000 ngowona mthamo wevili lesihlanu kwaye i-20,000 yeyegooseneck.
Qaphela: Kuya kubakho iitshathi ezahlukeneyo zevili lesihlanu kunye nesiqhelo (i-bumper pull), ke qiniseka ukusebenzisa itshati echanekileyo.

Kule tshathi, kukho amanani amabini: umthamo wokutsala (ngasekunene), kunye ne-GCWR (Umlinganiselo wobunzima obuDibeneyo obuDibeneyo), esiya kuthi sichukumise kamva. Ubuninzi yi-18,000lbs yokutsala ivili lesihlanu. Abantu abaninzi, kuquka nabarhwebi abaninzi belori, bema apha baze bacinge ukuba le yile nto inokurhuqwa yile lori. Nangona kunjalo, esi sisiqingatha kuphela somfanekiso. Okubaluleke ngokulinganayo kumthamo wempahla.

Umgangatho ophezulu JSK ephosa ivili lesihlanu 37C

Umthamo wempahla

A truck's cargo capacity is how much weight it can actually hold in (or on) the truck itself. This number is calculated using the truck's GVWR (Gross Vehicle Weight Rating) minus the truck's curb weight when it left the factory. Since every truck coming off the factory line will be different based on installed options, the cargo capacity is specific to each truck. This number will be found on a yellow “Tire and Loading Information” sticker in the driver's side door jamb and looks like this:

The sticker above is also from a 2017 F350 Super Duty SRW (Single Rear Wheel) 4×4 Crew Cab 8′ Box with 3.55 Axle Ratio. Notice that it says “the combined weight of occupants and cargo”. This means you, passengers, pets, tools, and even the fifth wheel hitch itself (the part that mounts to the bed of the truck). Those items alone will usually account for a few hundred pounds, considering most hitches weigh about 100lbs alone.

Let's just say that it's just a 200 lb. driver and a 100 lb. hitch with nothing else. In the example above, that leaves 3255 lbs. (3555 – 300) of true cargo capacity.

Ivili lesihlanu liya kuba phakathi kwe-20% kunye ne-25% yobunzima bayo bubonke kwiphini. Oko kuthetha ukuba i-20-25% ihleli ebhedini yelori yakho. Ipesenti iya kwahluka ngokuxhomekeke kwindlela izinto ezilayishwa ngayo, ukuba kukho ijenereyitha kwindawo engaphambili, njl. Kodwa, isinika uluhlu esinokusebenza ngalo. Ukwazi oku, yimathematika elula ukubala uluhlu oluphangaleleyo lwelona vili lesihlanu likhulu ngokuphinda-phinda umthamo wakho wokwenyani wempahla ngo-4 ukuya kwinqanaba eliphantsi (25% kwiphini) kunye no-5 kwisiphelo esiphezulu (20% kwiphini).

With our example of 3255 lbs., we come up with 13,020 – 16,275. That is the maximum size of the fifth wheel. Notice, the high-end number is a LOT smaller than the 18,000 towing capacity! Yiyo loo nto umthamo wempahla ubaluleke kakhulu kwaye kutheni uninzi lwamavili esihlanu amakhulu kufuneka i-DRW (Ivili eliBubini ngasemva / kabini) ilori.

Ubungakanani bobunzima obudityanisiweyo obupheleleyo

Ukuba uphantsi komlinganiselo wakho wokutsala kwaye uphantsi komthamo wakho womthwalo, awudingi kuzikhathaza nge-GCWR, kodwa kufuneka uyazi ukuba yintoni na. I-GCWR bubunzima obudityanisiweyo belori kunye nayo yonke into eqhagamshelwe kuyo okanye kuyo.

Kuthekani ukuba ndongeza iingxowa zomoya?

Ngelixa iingxowa zomoya zinokunceda ukukhupha ilori egcwele kakhulu ngokukhwela ngasemva, ayitshintshi nto malunga nomgangatho womthwalo welori. Ilori iya kuba kumgangatho, kodwa isagcwele ngaphezulu.

Kuthekani nge-RAM kunye ne-Chevy?

Uya kufumanisa ukuba zonke iilori ezinkulu ezi-3 (iFord, iDodge, iChevy) zonke zithengisa iilori ezikwaziyo ngokulinganayo. Khetha ibhrendi oyithandayo kunye neempawu ozithandayo, kunye neenkcukacha ezifanelekileyo zokutsalwa kwaye uyigolide! Qaphela nje ukuba i-RAM yenza indibaniselwano engaqhelekanga. Xa sasithengisa iloli, saboniswa i-RAM Cummins Dually nge-68RFE transmission kunye ne-3.73 axle ratio eyayinomthwalo omkhulu wokuhlawula (impahla), kodwa i-tow rating ye-18,660. Ewe kunjalo, umthengisi unyanzelise ukuba inokutsala i-20K fiver kuba iyiDually emva kwayo yonke loo nto. ? Zazi iinombolo zakho, kuba kukho ithuba elihle lokuba umthengisi akafuni.

Khuseleka!

You'll see a lot of arguing online about this topic, with references to the “tow police” whenever someone with an over-loaded truck want's to justify pulling a 20K toy hauler with a single rear wheel truck. But, as you can see, it's really just very simple math. That said, I've seen some pretty impressive numbers on the 2020 Ford SRW trucks that put it into the 18K range for fiver capacity. But, know your numbers. You are the one responsible for your family's safety on the road. Be safe!