krhyde1945
kentucky
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I'm looking at a 35foot MH with a 300hp cummins. Will this motor pull a full size toad up long steep hills without bogging down?
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toughnut
usa
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Joined: 09/08/2011
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krhyde1945 wrote:I'm looking at a 35foot MH with a 300hp cummins. Will this motor pull a full size toad up long steep hills without bogging down?
It wont bog down but you wont get any speeding tickets.U will be down to 35-45MPH depending on length and grade
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Fishinghat
Western Washington, USA
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Joined: 10/03/2002
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Cummins makes or made two engines with the 300 HP rating, the "B" and the "C". The ISC has more torque then the ISC, and will get up to the top of the hill faster. That said, both engines will preform just fine. You'll be able to go wherever you want.
I have a 35 ft HR Navigator with a 8.3 Cummins "C" engine rated at 300 HP, and I pull a 4,600 lb toad, all with no problems. My coach weighs 26,400 lbs.
If you want to "keep up with the big boys", you'll probably want to look for a 400 HP (ISL) or 500 HP (ISM or ISX) powered coach, but I'll warn you they are EXPENSIVE.
A simple rule of the thumb is one HP for each 100 lbs. However, it isn't HP that gets you up the hill, but torque. Torque is primarily a function of engine size.
Holiday Rambler Navigator DP, Hummer, and Honda VT1100C Shadow
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harold1946
Surprise Arizona
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Torque is no substitute for horespower when it comes to pulling power. In order to get the power you are talking about I would opt for the 400 HP (ISL). Every big block 460, 8.1,and V-10 will outpull the 300 HP on any grade. I have owned both and the 300 HP is a dog when it comes to climbing hills. It will definatly climb them but expect to be in the slow lane with the trucks. So to give the short answer, no it will not climb 6% or better grades without bogging down to 25-30 MPH.
Harold and Linda
2009 CT Coachworks siena 35V
W-22 Workhorse 8.1L
Explorer toad
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Executive
California/Arizona/South Dakota
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I had a 40' Dynasty with the 300HP, mechanical Cummins...with it I pulled a 3150# HHR. Most "hills" in California, it pulled fine..a little gutless but workable...on the Grapevine, forget it...it struggled..same as the climb out of Indio/Palm Springs eastbound I-10...if you're not in a hurry, it will get you to the top, but it will struggle on steep climbs..if possible, minimum should be 400HP ....Dennis
Dennis and Debi
Monaco Executive M-45PBQ Quad Slide
525HP Cummins ISM 6 Spd Allison
Chevy HHR W/ ReadyBrute
Fourth Year Full Timing Click here to view our travel blog
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wolfe10
Texas
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Discussing HP without relating it to GCW (Gross Combined Weight) will tell you very little. Basic physics-- you are interested in the weight/HP.
And as already asked, is this a 300 HP B or C engine. Huge difference in torque.
Brett Wolfe
1997 Safari Sahara 3540
EX: 1993 Foretravel 36' U-240
FMCA Forum: www.community.fmca.com/index
Diesel RV Club:http://www.dieselrvclub.org/
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Bionic Man
Colorado
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harold1946 wrote:Every big block 460, 8.1,and V-10 will outpull the 300 HP on any grade.
You must be comparing coaches of significantly different weight if you believe this. I would agree that the ISB isn't the fastest up the hills, but in equal coaches it would outpull a BB V8 or a V10 any day of the week.
2012 RAM 3500 Laramie Longhorn DRW CC 4x4 Max Tow, Cummins HO, 60 gallon RDS aux fuel tank, Reese 18k Elite hitch
2003 Dodge Ram 3500 QC SB 4x4 Cummins HO NV5600 with Smarty JR, Jacobs EB (sold)
2002 Gulf Stream Sea Hawk 29FRB with Honda EV6010
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squeakkos
parker az
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Joined: 03/06/2005
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ISM 500 HP 1550 toeque
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squeakkos
parker az
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sorry TORQUE
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J-Rooster
Port Orchard, Wa. / Lake Havasu City, Az.
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squeakkos wrote:ISM 500 HP 1550 toeque X-2
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