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Open Roads Forum  >  Class A Motorhomes

 > First time buyer question

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yfzr450

Plant City

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Posted: 01/06/12 06:44pm Link  |  Print  |  Notify Moderator

Looking at a Birkshire DP was wondering if the cummins 340 will be enough motor. I know that's hard to answer but I live in FL. plan on towing with it and the biggest hill I would ever go up would be Mt. Eagle in Tenns. once a year other then that just trips to Georgia. Or should I look at something with a bigger motor in it?
Thanks for your input

DanTheRVMan

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Posted: 01/06/12 07:15pm Link  |  Print  |  Notify Moderator

Check http://www.catrvclub.org/PDF_Docs/Understanding_Perf.pdf


I tow a van just shy of 5000 lbs out west on various hills and never have a problem with power


Dan
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Posted: 01/06/12 08:46pm Link  |  Print  |  Notify Moderator

We have a 330 CAT on a 38' MH towing a Malibu. We have towed over mountain passes in many areas of the country. A steep grade will take your speed down but if you gear down and just take it on up there should be no problem. Just take your time in the mountains and that engine should do fine.


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rvrepairnut

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Posted: 01/06/12 08:51pm Link  |  Print  |  Notify Moderator

yfzr450 wrote:

Looking at a Birkshire DP was wondering if the cummins 340 will be enough motor. I know that's hard to answer but I live in FL. plan on towing with it and the biggest hill I would ever go up would be Mt. Eagle in Tenns. once a year other then that just trips to Georgia. Or should I look at something with a bigger motor in it?
Thanks for your input

could u be more specific?? Like what size M/H? what is the Net weight
Like what does it weigh? 340HP is that gas or diesel? what motor?
What size vehicle do U tow? etc etc

PyrateSilly

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Posted: 01/06/12 10:20pm Link  |  Print  |  Notify Moderator

Last time I checked the 3rd highest mountain in Florida was Space Mountain in Disney. Or at least thats what they kept saying on the tours. If thats the case than I don't think you should have any problem with that one. Just learn the ins and outs of driving it just in case you do get a chance to go over some mountains.

We just went to Vegas and went thru Mountain Pass which is almost a 5k elevation and our 300hp did fine. Just down shifted and kept on eye on the engine for speed and heat and it was all good.


Thom, Gascap and Christine having fun in a 1993 Monaco Crown Royale 40ft 300hp RV.
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Evolve13

Crystal Beach Florida

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Posted: 01/07/12 12:06am Link  |  Print  |  Notify Moderator

Have a 360hp, tow a four door jeep, and tons of stuff.
Have no issues at all, and the Skyway bridge is pretty steep.


Non tutti che vagano sono persi

yfzr450

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Posted: 01/08/12 03:27pm Link  |  Print  |  Notify Moderator

Thanks for the input. But after the test drive I will have to rethink the class A. The wife and I will go to the RV show this weekend and look at some more.

vfrmarc

Hamburg TWP Michigan

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Posted: 01/08/12 07:31pm Link  |  Print  |  Notify Moderator

If the motor is the ISB 6.7, then there is a range of torques it can be rated at. Torque is your friend for moving weight. The reason for different ratings is there are different Allison transmissions and the amount of torque they can handle is different. Some of the newest ISB6.7 with the DEF after treatment systems can be rated to 800 ft lbs, they use the Allison 3000. Others with lower torque rating will use a less expensive Allison tranny like a 2500 or 2000.

I hope this info helps

fredbon

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Posted: 01/07/12 05:31pm Link  |  Print  |  Notify Moderator

Everyone wants to talk power and torque.

If you and the DW are not EXTREMELY happy with the interior, pass. You will be spending much more time "Living" in the coach, than driving it.

fred


Fred and Bonnie
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2005 Dolphin LX 6375
2006 Saturn VUE

As I've Matured... I've learned that artificial intelligence is no match for natural stupidity.



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