Hi,
Right this is for my brother's 01 YZ250F, he weighs roughly 175 pounds and the bike is used solely for Motocross at quick Grade C level. The problem he's having is the suspension tends to bottom far too often, even off reasonably small jumps. He broke his wrist recently and is worried if he overshot a jump the bike would come down very hard and injure his wrist again. Plus it's just very annoying to ride when the bike bottoms regularily. So my question is what should he do? It is not really possible to have revalving done here so springs and oil levels are the only real possibilities but we don't know which way to go with them so any suggestions would be great.
Here is the current setup, as it came to us, the bike is second hand from a Grade A rider...
Shock -
Static sag - 15mm
Race sag - 82mm
Fork - (I think I measured this right, if figures sound weird then maybe not :confused: )
Static sag - 35mm
Race sag - 65mm
Stock springs front and rear.
I measured the fork oil level at 80mm but I realised afterwards that there may not have been oil in between the inner and outer tubes so it is probably wrong, could be anything really...
So should he change the springs, and if so what rate springs does he need? Stock fork is .440, stock shock is 4.8. Does .444 and 4.928 sound right(They are from racetech.com).
Thanks for any help :thumb: ,
Philip
Right this is for my brother's 01 YZ250F, he weighs roughly 175 pounds and the bike is used solely for Motocross at quick Grade C level. The problem he's having is the suspension tends to bottom far too often, even off reasonably small jumps. He broke his wrist recently and is worried if he overshot a jump the bike would come down very hard and injure his wrist again. Plus it's just very annoying to ride when the bike bottoms regularily. So my question is what should he do? It is not really possible to have revalving done here so springs and oil levels are the only real possibilities but we don't know which way to go with them so any suggestions would be great.
Here is the current setup, as it came to us, the bike is second hand from a Grade A rider...
Shock -
Static sag - 15mm
Race sag - 82mm
Fork - (I think I measured this right, if figures sound weird then maybe not :confused: )
Static sag - 35mm
Race sag - 65mm
Stock springs front and rear.
I measured the fork oil level at 80mm but I realised afterwards that there may not have been oil in between the inner and outer tubes so it is probably wrong, could be anything really...
So should he change the springs, and if so what rate springs does he need? Stock fork is .440, stock shock is 4.8. Does .444 and 4.928 sound right(They are from racetech.com).
Thanks for any help :thumb: ,
Philip