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Have always kept my bikes in unheated but well insulated detached garage. Battery tender, sea foam gas treatment, and sheets to cover them. Never have a problem with moisture unless we get a freak warm up like this past Sunday. It got up to the mid 70's outside while the garage was still showing in the 40's. Anytime that happens things are gonna fog over. I did wipe the bike down but even then with sheets as a cover there was very little moisture.
The lights make a lot of sense the bike had to reach the dew point you have to change something either the temp of the air, the temp of the bike, or the grains of moisture in the air. I am a a/c contractor in Fl. deal with things like this all the time. depending on the temp of the garage a small dehumidifyer from homer d's or lowes should also fix it. the lights under the cover should keep the bike from geting to the dew point also. It is sweating like a tea glass does in the summer. Change one of the varibles and it will stop sweating. Good luck.
asuperheat has the best handle on the situation and the most informed opinion.The most practicalchoice is to keep the bike warmer so it does not go below the surrounding air's dewpoint. A more expensive choice is to control and condition the air in the garage tolower the air's dewpoint. Or... justpark the bike in the living room.
BTW, I'm an a/cfactorytrainer that teaches contractors & distributors psychrometrics and other stuff.
All I can recommend is a heated/atmosphere controlled area. My newest bike is stored at the dealer as it was last year. I can probably do it one more year until my wife puts the kabash on $375 for storage. It is worth it to me so I don't worry about pits in the chrome, etc.
Get a bike bag. or, my wife bought me one of those bubble things. (I know, I know) Anyway, I had to show my appreciation by putting my softail in it. It will not keep moisture out, as it actually just pumps it in. So now what I do, is put the bike in it, seal the fan opening, and zip it up. We just had one of those tropical air mass things blow in after being below zero, and there was no condensation on the bike at all. Totally dry. My uncovered RK was another matter. Blew that bike off with a heat gun.
Anyway, I think I've seen those bike bags going for cheaper than a Harley bubble, and looked like they'd be just as effective.
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