Tandem or triple axle??
03-04-2006 | 06:28 AM
#16
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From: oklahoma
I almost couldn't believe the phone call that came in yesterday he wants a 20+5 pintle hitch trailer with three 20000 lb axles, I wonder what he is planning on hauling, I know it will be expensive how expensive remains to be seen on monday
03-04-2006 | 06:47 AM
#17
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From: AUSTRALIA
Originally Posted by RAMRODD
First off I have a 36 Loadtrail with tandem 12,000, and I wish I has triple tandem 12,000!!! This is one thing I have noticed Trailers with tandem axels twist more you have to make sure your load is centerd on the trailer!! Tandem axels pull alot harder, any body that has pulled both I think will agree to that. Another thing look at the width of the frame rails the tandem axel trailers the frames are closer together, then on the single tire axels. If your thinking about singletires on a flatbed at least go with the 8000 tripple they should last ok. just my 2 cents PS get the high profile neck You truck box will thank me!!!!!!!!!!
03-04-2006 | 06:54 AM
#18
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From: Kokomo Indiana
Originally Posted by bluesurf
java, I am looking into buying a new gooseneck dump. I haul my skidsteer around with it and loads of dirt and rock. How much do you actually tow with your rig. With gooseneck does your gcwr go up. I was looking at a 16k with 2 7,000# singles on it. Would I fair better going with another setup. I want to tow the max that i can and be safe. thanks for the info.
You have a good idea of what you want in a trailer. 16000 is what I was going for, but went with this trailer because it is 8 ft wide. I got a smoking deal on my trailer. I haul about 5 ton on my trailer. My truck handles this set up very nicely. javahjoeo from Kokomo
03-04-2006 | 06:55 AM
#19
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From: oklahoma
deerefred your frame width is based on your axle spring centers 7 k axles have a 58" spring center so the frame is typically 60" wide, 12" I beam has a 4" flange on the bottom so the 60" ovral means that the hangers are well supported by the Ibeam hope this helps, on 8K axles IM not sure on the spring centers I would have to check my book at work
03-04-2006 | 06:59 PM
#22
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From: Sarasota, Florida
Originally Posted by Patrick Campbell
You can't get a 16000 lbs trailer with 2 7000 lbs on it. It would have to have 8000 lbs axles on it. The GVWR cannot be higher than the sum of the GAWRs.
03-04-2006 | 08:06 PM
#23
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From: Central VT
I stand corrected. Trailers must be a bit more lax than trucks. On a truck by law the GVWR cannot be more than the sum of the GAWRs. But then again on the truck no weight is being transferred onto something else.
I have had trailers that come with 12168 lbs of tire rating with a 14000 GVWR but the axles were 7000 lbs axles. On trailers you will often something like "GAWR 7000 limited by tires". This is of course illegal on cars too. Tires must meet GAWR.
I have always used trailers where the axle ratings equal the GVWR. Nice to know there is a little safety margin in the braking at least.
I have had trailers that come with 12168 lbs of tire rating with a 14000 GVWR but the axles were 7000 lbs axles. On trailers you will often something like "GAWR 7000 limited by tires". This is of course illegal on cars too. Tires must meet GAWR.
I have always used trailers where the axle ratings equal the GVWR. Nice to know there is a little safety margin in the braking at least.
03-04-2006 | 09:06 PM
#24
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From: Illinois
Originally Posted by FiverBob
Aaaaa, yeh you can. I have a 16K fiver with 2-7K axles. You forgot to subtract out the weight carried on the pin - - on mine that is 3500 pounds leaving 12,500 for the axles.
03-04-2006 | 09:16 PM
#25
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From: KENTUCKY
Originally Posted by Deerefred
....my question is........what is normal width of frame rails spacing for single wheel axle configuration?
If the frame is too wide, the tires will rub the frame.
Even if they clear when empty, they might contact the frame when loaded.
Be sure to allow plenty of room behind the tires.
03-05-2006 | 01:26 AM
#26
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From: AUSTRALIA
Originally Posted by wiz1
deerefred your frame width is based on your axle spring centers 7 k axles have a 58" spring center so the frame is typically 60" wide, 12" I beam has a 4" flange on the bottom so the 60" ovral means that the hangers are well supported by the Ibeam hope this helps, on 8K axles IM not sure on the spring centers I would have to check my book at work
My axle supplier asked me what my frame spacing would be so he could put the spring mounts where I wanted them......so you have been a big help thanks
Fred
03-05-2006 | 02:45 PM
#28
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From: Windsor, Ontario
Originally Posted by FiverBob
Can't talk about car haulers, but from the RV fiver standpoint, there are pro's and con's each way. Casey Balvert has the dual tandem on his Newmar and likes it. It will definitely ease scuffing on the tires. However, some have complained of stability with the dualies. The frame has to be moved in closer to the center to make room for the wheels. This pulls the suspension point in tighter to the center. To compensate for this you have to spring it tighter or work more with torsion bars. The same occurs in motorhomes with the four air bag system versus eight. My four bag rig swayed a lot in corners versus the eight bag because the four bagger was suspended way toward the center versus the eight bagger. This is somewhat less of a problem in a follower (trailer) than in a leader as would be the motorhome, but we all still take corners. Most of the RV fiver triples seem to complain of the front and rear scuffing the most versus the center.
Bob
Bob
Bob, the stability issues were isolated to trailers that were equipped with tandem duals AND the MorRyde IS suspension. Primarily because the IS setup required a narrower frame to axle attachement than that specified by Dexter. The leaf spring versions with the MorRyde RE suspension were not effected. I wanted the IS suspension but was concerned about the stability problems that I had heard about. Not sure if Newmar ever resolved the problem but they are still making the Kountry Aire models with the IS suspension and tandem duals.
The cover is finally off the trailer. Spring is just around the corner.
Casey
03-05-2006 | 11:40 PM
#29
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From: West Virginia
Something I prefer about the dual tandem is the fact that when your on a small road I can run with my dually p/u tire right on the edge of the road and the dual tandem trailer will be the same, right on the edge, however with a tri-axle your trailer tires just roll right of the edge of the road with out the inner tire to hold it on the road. This may just be a little advantage but after patching a few tires and loosing all my hubcaps on the right side, I prefer a dual tandem. Just before someone says it, its not my driving that causes me to run off the road, if you haul tractors and equipment around enough you will end up on a narrow road with no shoulder and you'll appreciate a dual tandem or wish you had one