Originally Posted by Hipshot
I make a ramp out of Lego blocks. The ramp slopes up and down in case I overshoot. It's not to difficult to do this alone, I have done it to see if I could. So far I have not had to do this for real. With the ramp the TT weight is being supported by 3 tires. If I use a jack the TT is being supported by 2 tires since I have to jack under the frame. My owners manual says not to jack under the axles. There are many ways to do this just be safe.
I am not sure the ramp idea with Lego blocks would actually work to change the tire on my rig. The wheels are very close together. Getting the flat up would not be the problem. Getting the inflated new one on might require taking the ramp apart. Easy to do with wood sections; almost impossible to do with Lego blocks.
I also see your point about using a jack on the axle. The fear here is bending the axle by putting 1/2 the weight of the camper on a single spot on the axle.
Placement as close as possible to directly under the frame attachments should allow clearance to switch out the tire while avoiding axle damage. Carrying a short piece of steel square channel placed between the bottle jack and the axle should also spread the load out over a wider area. Of course you should always have a plate under the jack to keep it from sinking into the macadam during the change out.
These are all emergency procedures. If you have the option for AAA then by all means call them and have a coffee while you wait!
While it is true that with 3 tires in contact the ground 1/3 of the camper weight is on each tire (vice 1/4 with all 4 in contact); with a jack under the frame, the jack is carrying 1/2 of the camper load and the opposite tires are carrying their normal 1/4 load.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
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