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Old 02-15-2004, 10:50 AM   #11
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Ok the kenworth may not be a good idea for what I want to do I guess I will have to start looking for something else or stay with the truck that I have know. Thank You for all the info.
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Old 02-15-2004, 11:29 AM   #12
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It may not be perfect, but if it is in good shape, I would not be afraid of it.
Too many gears? Phoeey. It's an autoshift. You will not care, as it does all the work.
Too much power? No such thing, just don't go ape stomping on the throttle.
Too tall? Maybe, as I have not been in many RV parks, but there are also other places to park. And with the big sleeper, you have more room to gut and modify, such as extra seating, fridge, microwave, etc.
Tandem? Well, I like them, but don't have anything to do with 5th wheels, so that may be an issue. Check with a KW dealer to see what kind of a PIA that is to deal with if you really need to.
I would be more concerned with the overall condition of the truck. You may find it better to get a good used truck and learn what works for you and what doesnt, then buy according to those lessons.
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Old 02-15-2004, 06:40 PM   #13
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Thank you Doug for the info I did not think there was any thing as to much power. I only have three years till I retire and only want to do this one time. I appears that onezman has had good luck with the volvos, I just liked the look of the kenworth
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Old 02-17-2004, 04:42 PM   #14
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Bob,

I know one guy who tows his Travel Supreme with a converted T2000. He really likes it. You just have to plan in advance what RV parks you can stay in.

Guys with pickups and MDTs never have enough HP, but believe me, 430 HP and 1,550 torque will keep you smiling. 550 HP is more than you can ever use in any RV situation and will wear out your drive tires much faster IMO.

onezman

http://onezman.tripod.com/yourrvhaulercom
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Old 02-17-2004, 06:30 PM   #15
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Ummmmmmmmmm- how does more rear wheel horse power make your tires wear out quicker--- just askin' -- just askin'-- oh you can use all of the horse power on some of the hills that they have out in the rockies--- mase
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Old 02-17-2004, 11:30 PM   #16
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....it's all that street racing against those posure cars....geof :&gt
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Old 02-18-2004, 08:08 PM   #17
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Vapoppa

With 550 HP, Im guessing that motor probably has 1,750 foot pounds of torque. That kind of power will cause imperceptable wheel spin, even when towing.

I understand that OTR drivers who have 600 HP engines wear drive tires out twice as fast as normal in mountainous terrain. Even with 40K on the drive tires, they still get imperceptable wheelspin which wears tires out faster.

With 430 HP and 1550 torque, if a driver keeps the boost up, and has no curves or traffic problems, he can tow 20K at the trucks top speed up a 7% grade. Even doing that won't be working the engine hard enough to cause the engine fan to activate, or bring the pyrometer above a rather pedestrian 750 degrees.

There is simply no way to utilize that kind of power towing 20 K. Right now I have a 2000 Volvo which has a 500 HP Detroit with 1,650 torque. I won't get an opportunity to tow with it because the buyer is picking it up this Friday. I think it will tow 20 k up a 7% grade like it was towing a bicycle.

onezman

http://onezman.tripod.com/yourrvhaulercom
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Old 02-23-2004, 08:56 PM   #18
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On the 18-speed....

I have a 10 speed autoshift. My opinion is that an 18 speed would have to many gears to move through. As Larry said, the purpose of those gears is to move heavy loads to speed - you will not be doing that. While it is true that "you" are not doing the shifting, you ARE waiting for all that shifting to happen to get up to speed. I find even my 10 speed takes longer than I want to pull up to road speed - if I manually shift (using the Hold) then I can circumvnet this. I can't imagine using an 18 speed.

Jack Mayer
1999 Volvo 610, 182" wb, ISM 400/1450
36' Newmar Kountry Star 5er
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Old 02-23-2004, 09:52 PM   #19
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......I have been told that 18's are Owner/operator specs and that they are "old fashioned" and that newer vehicles are using less gears and more speed/torque form each gear....another words winding them out more?.....this is an opinion from a Freightliner salesman that I have a lot of respect for......geof
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Old 02-24-2004, 11:36 AM   #20
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A 10 speed will get the job done 99% of the time for all OTR applications. 18 and 15 speed transmissions are becomming a thing of the past in the market place.

Generally, 18 speeds are only used for very heavy haul applications. These transmissions were popular when HP ranged from 250 to 350 with torque ranges from 1050 to 1250.

With the advent of higher HP higher torque engines, that many gears are entirely unnecessary.

For RV porposes, even a 10 speed is too much. The lower gears will almost never be used. For towing, 4th gear is sufficient for starting off. I use 5th gear starting off bobtail. The only time an RVer will use lower gears is for "creeping."


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