Tengam

[Vroomvroom]

Silly question, maybe. But do magents lose power, strength over time at all or after being used in these cars? I use the paper on fridge test to pick strong ones, some are the stock tomys some rems. Is it ever neccessary to check them? Sometimes it just seems like they are weaker/shrugs

[InGaN]

They should last a long time if you don't exceed thier max. temperature rating or abuse them.

[isk8blind]

i think it takes 7 yrs. for a magnet to lose its power

[Vroomvroom]

Neat~