Although it's a little difficult to tell for sure from the dip switch settings pdf that you've linked to it does indeed look like the time settings for the first stage of the race are 90/85/80/75 (easy/medium/hard/hardest) which are the same for the roms from my board.
The guy on the J+ forums has posted some pics of his boards. I'll copy them to here for people who can't access the tech section of those forums.
His sub-cpu roms are labelled the same as mine. My main cpu eproms have had their original labels removed unfortunately so it's impossible for me to tell whether mine were labelled the same as his but the labels on his are different to the ones from the hangon/hangon1 sets.
He doesn't have access to an eprom dumper at the moment (he may do when he returns to work next week, time dependent).
He's said that there's a possibility that this board set is a mixed up set as it's his spare set so he's going to photograph the actual board set that's inside his ride-on machine for us soon. Hopefully it's a confirmed original board set that's in his ride-on.
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Re: Here's the Hang-On Ride-On Dip Switch Information and the Schematics
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Re: Previously un-dumped Sega Hang-On EPROMs
