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Old 05-02-2006, 04:34 PM   #11
rickst29
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Join Date: Aug 2005
Location: Reno, NV
Posts: 1,318
Question wheel/axle "upgrade" on the small ones (2619, 2720)

- - - Increase the Payload - - -
The 'load capacity' in the current flyer, for models 2720SL and 2720SD, is only 1210 lbs. But this is before adding heavy options like A/C and Awning. It's also before watering up, at 8lbs/gal. A 40 fresh water tank, which others have also recommended for dry camping, is over 300 lbs.

So, for 2619 and 2720, if you want to be able to load heavily, you might ask for the un-publicized factory option "upgrade my axle, wheels and tires to the one used in the 3023 and 3124 models". In 2006 models, this is now a difficult field upgrade (lots of cutting and re-welding), because the axles are now welded rather than bolted to the frame.

- - - Improve braking power, tire life - - -
In addition to allowing for more payload, the bigger wheels might have more braking power. (I'm not sure about this... but if the number and magnetic power of the components are the same, mounting them on a bigger radius makes them more effective.) And the load on the tires is much further below max, which might be good for tire life.

But the stiffness of the heavy axle will tend to shake your TM a lot harder, you need to reduce your tire cold PSI per Goodyear recommendations (tune to the loading) so that they perform with the proper amount of "spring".

- - - Improve Ground Clearance - - -
This upgrade is also helpful for ground clearance and approach angle (as in, steep curbs into gas stations, you don't want to drag your TM bumper on the ground.) Although the bigger wheel and tire only add 0.8 inches, the total increase in ground clearance is about 2-1/2 inches- the bigger axle adds a lot.

Still, if you want just ground clearance and aren't concerned about the load capacity, the "lift kit" is a much cheaper way to get it. If you're really roughing it, consider both-- although you might need to consistently use
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TM='06 2619 w/5K axle, 15" Maxxis "E" tires. Plumbing protector. 630 watts solar. 450AH LiFePO4 batteries, 3500 watt inverter. CR-1110 E-F/S fridge (compressor).
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