Dirtbike + side street intersection = rear brake lockup
Posted: Thu Jun 29, 2006 4:30 pm
Well, I took my little 50cc midirtbike down the road to get the cobwebs out. It is a neighborhood street, 30-40kph speed limit.
Before I get the disapproving "you shouldn't have a dirtbike on street", I know (got a buyer coming in an hour, I wanted it warmed up). That lashing aside, please read on....
The bike is a little single speed auto, right brake is rear, left is front. I'm cruising along at 25kph, hugging the shoulder as per 50cc street rules. Passing a wooded area I'm coming up to the dirt drive that leads into that lot. Both areas of view at that road are blcked by overgrowth. Of course, you can all see it coming, a car pulls out from the dirt road and sticks his damn car out 1/2way into the street so he can 'see around the corner'. Anyhow, he sees me after he's in the way, but stops. By this point I have let off the throttle and grabbed the right front brake and squeezed. The rear locks and skids, which I control fine, then I let off the brake when I was slowed down enough to swerve around. As I pass in front of him, he gets a look, and knows it too as he returns the stare.
Anyhow, I'm both troubled and relieved at my response.
Relieved:
1) I handled the bike like it was nothing when the rear locked up. I remember when I first got the bike I intentionally practiced locking the rear to learn how the bike would act (since I only use the rear brake on this bike). So, that planning paid off in THIS instance. Handling the bike when it locked and went into a skid was pretty natural and did not come as a surprise. I stayed up, the bike stayed up and steady and I felt like I controlled it well with my lower body. (The front tire was free rolling, no brake applied)
However, troubled:
2) When the car pulled out, I immediately grabbed the front right lever, which on mostly all bikes is the front brake. I'm afraid if I were on a fullsize bike I might have face planted from such a reaction. Also is the factor of the rear brake was on the handlebar, rather than the foot brake.
3) Feeling the bike, when it skid and I had slowed enough to let go of the brake, I'm wondering again, if it was a fullsize bike, would that same action have put me into a high side.
4) Should I have swerved instead of braked?
Anyhow, I'm just rethinking the situation and how it played out. I hope I did something correct (yes, I know, MSF, its in the calendar, and I have been studying the classroom portion). And whatever I didn't do correctly I'd like to practice so that it comes naturally when I need that reaction again. I'm open to your thoughts, criticism, and general musings. I realize this wasn't a 'regular bike' so those variables muck the water. But I still was placed in an emergency situation that required quick action. I'd like to evaluate it and learn what I can.
Before I get the disapproving "you shouldn't have a dirtbike on street", I know (got a buyer coming in an hour, I wanted it warmed up). That lashing aside, please read on....
The bike is a little single speed auto, right brake is rear, left is front. I'm cruising along at 25kph, hugging the shoulder as per 50cc street rules. Passing a wooded area I'm coming up to the dirt drive that leads into that lot. Both areas of view at that road are blcked by overgrowth. Of course, you can all see it coming, a car pulls out from the dirt road and sticks his damn car out 1/2way into the street so he can 'see around the corner'. Anyhow, he sees me after he's in the way, but stops. By this point I have let off the throttle and grabbed the right front brake and squeezed. The rear locks and skids, which I control fine, then I let off the brake when I was slowed down enough to swerve around. As I pass in front of him, he gets a look, and knows it too as he returns the stare.
Anyhow, I'm both troubled and relieved at my response.
Relieved:
1) I handled the bike like it was nothing when the rear locked up. I remember when I first got the bike I intentionally practiced locking the rear to learn how the bike would act (since I only use the rear brake on this bike). So, that planning paid off in THIS instance. Handling the bike when it locked and went into a skid was pretty natural and did not come as a surprise. I stayed up, the bike stayed up and steady and I felt like I controlled it well with my lower body. (The front tire was free rolling, no brake applied)
However, troubled:
2) When the car pulled out, I immediately grabbed the front right lever, which on mostly all bikes is the front brake. I'm afraid if I were on a fullsize bike I might have face planted from such a reaction. Also is the factor of the rear brake was on the handlebar, rather than the foot brake.
3) Feeling the bike, when it skid and I had slowed enough to let go of the brake, I'm wondering again, if it was a fullsize bike, would that same action have put me into a high side.
4) Should I have swerved instead of braked?
Anyhow, I'm just rethinking the situation and how it played out. I hope I did something correct (yes, I know, MSF, its in the calendar, and I have been studying the classroom portion). And whatever I didn't do correctly I'd like to practice so that it comes naturally when I need that reaction again. I'm open to your thoughts, criticism, and general musings. I realize this wasn't a 'regular bike' so those variables muck the water. But I still was placed in an emergency situation that required quick action. I'd like to evaluate it and learn what I can.