Why are modern dirt bikes and motocross racers saw horses?

New dirt bikes are almost completely flat from the gas tank gas cap to the rear fender, why? There used to be a nice dip in the seat where you would slid up into to turn, that dip is now gone. The manufacturers could still put the dips in if they wanted to, why aren't they?

Anonymous2011-10-03T22:58:25Z

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i personally think the reason for it is because a straighter seat allows for better and faster seat transitions like when going from like whoops to a sharp turn

Eddie W2011-10-04T17:28:50Z

I totally agree, but I'm guessing they make em like that so that you can set the bike up the way you want... some riders like dips some riders like humps on their seats..pers. I hate the new yz's but thats the only brand I ride...

Bedouin2011-10-03T23:02:30Z

An interesting question John. Having started racing a long time before 'flat' bikes I found it hard to adjust to the 'new design'. At least on the 'old' bikes when you got a chance to sit you knew exactly where your bum was and it was supported ("wedged") in the right place.

It would be interesting to see lap times on identical bikes apart from the seat around a circuit.

I certainly prefer the dip seat but then bike designers aren't always riders, but that is just my opinion, and to get negative votes from people who don't have opinions anyhow. LOL...

Candid Chris2011-10-03T20:33:03Z

Not totally sure but I believe that the design was from pro-racers (pretty much males) smashing their balls into that tank while running the gnarly whoopty-sections and asked for that 'hump' in the bike to be smoothed out.
With that theory in mind, it just goes to prove what wimps the modern pro-racers really are! ;D

Anonymous2011-10-03T19:50:57Z

It is possible that the dip in the seat meant that the frame had to be dipped which could havee made it heavier but i dont know for sure

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