GT vs F1 speed comparison.
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Previously:
https://www.homemadetools.net/forum/...794#post159894
https://www.homemadetools.net/forum/...220#post157864
https://www.homemadetools.net/forum/...770#post143958
https://www.homemadetools.net/forum/...372#post146496
https://www.homemadetools.net/forum/...484#post139233
https://www.homemadetools.net/forum/...283#post138705
https://www.homemadetools.net/forum/...004#post137757
https://www.homemadetools.net/forum/...960#post137592
https://www.homemadetools.net/forum/...790#post136946
https://www.homemadetools.net/forum/...379#post131384
https://www.homemadetools.net/forum/...775#post118888