Motorcycle Lift on Rear Rad

We have seen many, side and rear radiator. never had a guest tell us of any problems. The vorticie behind the coach is plenty to overcome any slight reduction of cargo.
One guest had a neat solution to keep his 800# H/D FLHTCU clean, he made steel hoops that fit into sockets on the lift, then a vinyl zippered cover with a 8" 'hose' that went to an air scoop on the roof. The scoop and hose sent clean air down around the bike. Coach was rain & road dirty, bike was spotless.

Had an Overbilt lift on the back of my Phaeton. It handled my Harleys just fine, either the Road King or Fatboy. Occasionally, I would get a bit of oil film on the engine but a quick wash would clean the bike up. Grreat way to bring your mc with you as the Overbilt is also set up to tow a toad.

i carried a 'scoot' on the back of our rear raditor DP for 8 years
never noticed any additional heating problems to the engine
or heat damage to the bike

Generally, the air coming off the engine of the motorcycle (air cooled) is far hotter than what comes out of the radiator of a diesel engine.

Chum lee

I had a versa-lift on the back of my rear rad Bounder, had no problems with it. Carried a small (650) yamaha on it for several years.

I would have to go buy the physical lift. I only have the hitch system that was welded on the back.

If the lift is still there, you have a marvelous opportunity to find out.