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Old 10-10-2007, 04:25 AM   #1
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Hi All,
I am looking for some user information. I want to pull a trailer that will probably weight about 16000 lbs loaded. I have looked at several coaches with 330 HP Cats and have been told by one Cat Motor guy that this motor "might be" marginal. Any ideas?
Thanks
David
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Old 10-10-2007, 04:25 AM   #2
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Hi All,
I am looking for some user information. I want to pull a trailer that will probably weight about 16000 lbs loaded. I have looked at several coaches with 330 HP Cats and have been told by one Cat Motor guy that this motor "might be" marginal. Any ideas?
Thanks
David
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Old 10-10-2007, 05:39 AM   #3
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"might be marginal" would be an understatement. I would want 450 hp or better. Maybe 330 would work if the motorhome only weighed 15-20K. You will be hard preesed to find a coach that has a 16k tow rating with a 330 cat in it.

Jim
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Old 10-10-2007, 05:56 AM   #4
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I suggest you concentrate on the towing capacity of the coach ... I think all coaches that have a 16000 pound towing capacity will have an appropriate engine.

This website should help you determine the towing capacity of any coach Towing Terms

This is a "calculator" to help you through the terminology ... Where it says [Truck] use the values for the motorhome you are considering
Towing calculator
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Old 10-10-2007, 06:17 AM   #5
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Thanks, I have been reading the entire subject in this area and found one guy who I am still trying to re-find who was pulling a stacker with a 350 HP Cat. Want to get his feed back.
Will still be interested in comments. Thanks for the Towing Calculator.
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Old 10-10-2007, 11:33 AM   #6
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Thanks, I have been reading the entire subject in this area and found one guy who I am still trying to re-find who was pulling a stacker with a 350 HP Cat. Want to get his feed back.
Will still be interested in comments. Thanks for the Towing Calculator. </div></BLOCKQUOTE>

I think the biggest concern will be tongue weight. Guessing it sounds like you're pulling a race car trailer? I pull a 28ft 12000lb with a 350 CAT but I was very attentive to the tongue weight. You don't set any speed records but it will get you down the road without problem. With that weight trailer I would suspect that the tongue weight would be excessive to the point where you you have to go to Hitch Buddy or some other type device.
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Old 10-11-2007, 03:29 AM   #7
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Hi Mike,
I am thinking about a stacker trailer. Weight of the trailer with out load is 8500 lbs, with load about 13,500 to 15,000. It has a tongue scale so we get the weight to about 1000 lbs or less. That puts it over the rated Gross Combined Weight Rating of almost all the coaches we have looked at. That is not my concern but the HP of the coach and whether we can negotiate the hilly country without all the hassels. I noticed you 350 HP so how do you I would be over by about 3500 lbs. But more to my point of concern is the HP of the coach. I don't want to be the guy holding up the line on a long hill. It is very hard to get information about what will pull what. I noticed you have a 350 I am asuming Cat. Is it a C7 series motor?
How does it pull the hills?
David
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Old 10-11-2007, 05:20 AM   #8
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Hi, Cayman Dave:
The general rule about hitch weight is that it needs to be a minimum of 10% and up to about 14% of the total weight. This is because you will have a major sway problem with less hitch weight than this. Been there, done that, no fun.
I would also worry about greatly exceeding the GCVW rating and then expecting to zoom up the hills. You will be severely taxing the brakes and transmission, etc. You may have problems going down the back side of the hills even with trailer brakes. You cannot ride the brakes all the way down the hills and the motor will not have enough compression to keep it slowed down with this much weight. I think you need to rethink this. Try going to a much larger motorhome based on a bus chassis.
Good luck.
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Old 10-11-2007, 06:16 AM   #9
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Dave,
The weight I'm pulling is certainly reaching the outer limit of the coach. I've seen numerous MH's at the track pulling stackers, many with the C7 Cat but I think you need to be careful. You certainly aren't going to be setting speed records climbing hills. I can't tell from your profile what part of the country you are from but out here in SoCal we have to negotiate alot mountains to get anywhere. Pulling some of the mountains out here in the summer months the engine and transmission temperatures do start to climb. Most stackers are going to be 3 axle so you should have plenty of braking back there going down hill but you certainly can't rely on the MH to do all the stopping for you. Down hill speeds will need to be watched. The best route for your combo would be to go with the larger coach and chassis and 400hp.
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Old 10-11-2007, 06:34 AM   #10
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Have you looked at this style motorhome I am sure you have seen them at the track. Their price ranges are similar to conventional motorhomes, but will tow a whole lot more.

Jim
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Old 10-11-2007, 08:13 AM   #11
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Doug,
Thanks for information. Problem is I cannot find a coach that would haul that load. I think we are talking about something in excess of 42 feet. I know there are a lot of these trailers being towed with less. But I do understand the potential problems.
Thanks again
David
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Old 10-11-2007, 08:18 AM   #12
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Mike,
The bigger motor home with a 400 HP is where I am headed. This gets crazy even the 400 hp rigs are not rated to pull this load as the differential is only about 10000lbs, and I am over that by 3500 lbs at least. The trailer has three axels with brakes. We are currently based on the East Coast but the Blueridge has plenty of hills. We are thinking about the West and I guess really don;t want to be liminted but rig or trailer to anywhere.
Thanks for the information.
David
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Old 10-11-2007, 08:21 AM   #13
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Jim,
I have looked at them and they are rated to pull something like 45,000 lbs. Just have problems with the overall look. But maybe worth another look. Don't want to be in the Prevost range with this idea.
Thanks for the information.
David
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Old 10-11-2007, 10:39 AM   #14
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Hi Dave, I can't answer your question but I just wanted to point out the classified section of IRV2. There are some toy haulers and a stacker listed. FYI http://www.irv2.com/rvclassifieds/category.php?type=1

I pulled a 8000 lb trailer all over Mexico and the US with 230HP diesel pusher with absolutely no problems in the HP dept.
(6 speed Allison/Cummins 5.9)
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