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Thread: Bicycles

  1. #1
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    Bicycles

    Ok, a bicycle is a bike so I'm guessing this will be ok in here as this post is relevant to motorcycles...

    Always trying to learn what the limits of the machine are and spending FAR too much time reading about front wheel lock ups, rear wheel skids, tyre braking forces and lean angles in the wet, studying racing footage etc etc i realise i got to get out there and try it all more... however... I don't want to wreck my lovely NC30 or any motorcycle for that matter!

    I can't believe i've only just thought of actually using a bicycle to experience these limits... even if it's not 165kg machine it is on 2 wheels and therefore the experience will surely translate somewhat. I know already that locking the rear brake on the motorcycle feels like the same kinda thing on a bicycle, however i have not done any of the others.

    Main things i want to experience and get a first time feeling for are:

    -front wheel lock ups in straight line
    -braking in a turn/ front wheel wash up/low side while cornering
    -generally just braking right at the limits in wet and dry conditions
    -high side
    -lean angles in wet and dry
    -Tyre pressures, temperatures and their effect on all of the above!

    Right ... I think it's possible to use a bicycle to simulate most of those phenomena to a scaled down extent... I'm thinking of doing the high side on a astroturf kind of surface if i can find something. Just couple of things...

    How far can a bicycle lean!!!??? If i want to spend time and get confident at 45/50 degree lean angles then i want to be sure the bicycle can do it eh. Have you guys managed to crank bicycles right over? I couldn't even find any clips of this on youtube.

    Just so i know what to expect... what kind of percentage of lean angle and braking force can i probably expect on wet vs dry?

    Would be interesting to here from experienced bicycle folk in this area on how it relates to a sports bike. Haha!

    Cheers

  2. #2
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    Haha, well I'd be your man.

    Worked as a bicycle/motorcycle courier in Auckland CBD which is hilly as, so you get some insane speeds on the bicycle.

    On the road bicycle you hardly touch the rear brakes on dry days. I got good enough on the brakes that I could balance it on the front wheel going down steep CBD streets. Although I lost all my wheelying confidence when I flipped it and landed on my radio in my shirts back pocket and couldn't move for like 2 minutes.

    I also had a solid steel framed Giant boulder mountain bike. Had really hard rubber tyres on it, but I could still get to the edges of the tyres. With good tyres, you could probably lean nearly as far as a proper race bike. But I was mostly concerned with their ability to not wear out and get punctures. I lowsided it near the end of last year going down the blocked off road on constitution hill, and grazed my knuckles to the bone and broke two ribs. Not much fun. Still couldn't afford to take any days off. Managed to keep the blood off the packages.

    On the road bike I've lowsided it maybe 3 or 4 times. Although I've had moments where I had both tyres sliding and just managed to keep it up and avoid the parked cars I was about to slide into.

    Best bike for learning bike control skills would be a mountainbike with rigid frame (no suspension) and quality grippy road tyres. Pretty sure you could get knee down on something like that.

    I remember picking my leathers up from the repair lady at the st Kevins Arcade, had to wear them cause they wouldn't fit in my pack. The riding my bicycle full tilt turning right onto Nelson St where my work is and trying to get the knee down hahahahaha.

    Bicycles rock. But you do stupid shit you will crash.

    In the wet, don't expect to be able to slow down much at all. This job was lethal in the wet. Some cobbles around Auckland CBD became like Ice skating rinks for the bicycle tyres. I don't know how many times I fell and sprained my wrists in the wet. My right wrist will never get full strength again. It's actually loose in the joint a bit. Luckily my brother and his wife are physios.

    But for becoming a motorbike racer nothing compares to track time on the bike you want to race. Bicycles do however sharpen and guide your reactions. You need to have lightning reactions and excellent peripheral vision to be a fast high earning bike courier in Auckland without ending up roadkill.

    I'm doing it again in December... So damn excited. It's only fun if you are a maniac.

  3. #3
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    Seriously - buy a dirt bike. Just get something small and cheap like an XR200. Nothing beats time spent sliding round in a paddock for learning your limits. A push bike isn't that relevant.

  4. #4
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    I have been disqualified since september 2007.

    Been getting around by bicycle.

    had a lowside at 30 kph, i find bicycle has been the best way to teach new riders i know about countesteering....

    yeah if you see a guy giving it tits on a bicycle with mp3 player and alpinestar gloves....

    thats um me lol.

  5. #5
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    You spend to much time thinking Not doing just ride . As you ride you get better

  6. #6
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    I never really found the limits of the lean angle's off a push bike in the dry.

    Front wheel lock up's could be interesting on a push bike.

  7. #7
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    Quote Originally Posted by skidMark View Post
    I have been disqualified since september 2007.

    Been getting around by bicycle.

    had a lowside at 30 kph, i find bicycle has been the best way to teach new riders i know about countesteering....

    yeah if you see a guy on a bicycle giving it tits on a bicycle with mp3 player and alpinestar gloves....

    thats um me lol.
    Hey man how did you low side your bicycle???

  8. #8
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    Quote Originally Posted by trademe900 View Post
    Hey man how did you low side your bicycle???

    too much lean, the front let go lol

  9. #9
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    Quote Originally Posted by vtec View Post
    Haha, well I'd be your man.

    Worked as a bicycle/motorcycle courier in Auckland CBD which is hilly as, so you get some insane speeds on the bicycle.

    On the road bicycle you hardly touch the rear brakes on dry days. I got good enough on the brakes that I could balance it on the front wheel going down steep CBD streets. Although I lost all my wheelying confidence when I flipped it and landed on my radio in my shirts back pocket and couldn't move for like 2 minutes.

    I also had a solid steel framed Giant boulder mountain bike. Had really hard rubber tyres on it, but I could still get to the edges of the tyres. With good tyres, you could probably lean nearly as far as a proper race bike. But I was mostly concerned with their ability to not wear out and get punctures. I lowsided it near the end of last year going down the blocked off road on constitution hill, and grazed my knuckles to the bone and broke two ribs. Not much fun. Still couldn't afford to take any days off. Managed to keep the blood off the packages.

    On the road bike I've lowsided it maybe 3 or 4 times. Although I've had moments where I had both tyres sliding and just managed to keep it up and avoid the parked cars I was about to slide into.

    Best bike for learning bike control skills would be a mountainbike with rigid frame (no suspension) and quality grippy road tyres. Pretty sure you could get knee down on something like that.

    I remember picking my leathers up from the repair lady at the st Kevins Arcade, had to wear them cause they wouldn't fit in my pack. The riding my bicycle full tilt turning right onto Nelson St where my work is and trying to get the knee down hahahahaha.

    Bicycles rock. But you do stupid shit you will crash.

    In the wet, don't expect to be able to slow down much at all. This job was lethal in the wet. Some cobbles around Auckland CBD became like Ice skating rinks for the bicycle tyres. I don't know how many times I fell and sprained my wrists in the wet. My right wrist will never get full strength again. It's actually loose in the joint a bit. Luckily my brother and his wife are physios.

    But for becoming a motorbike racer nothing compares to track time on the bike you want to race. Bicycles do however sharpen and guide your reactions. You need to have lightning reactions and excellent peripheral vision to be a fast high earning bike courier in Auckland without ending up roadkill.

    I'm doing it again in December... So damn excited. It's only fun if you are a maniac.
    Haha great story man! Enjoyed the read- thanks.

    MOAR bicycle stories please!

  10. #10
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    Quote Originally Posted by skidMark View Post
    too much lean, the front let go lol
    So what kind of lean was that at? Sports bike max lean kind of angle?

  11. #11
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    Before I even got my road motorbike licence, I had been dirt biking for a few years. It helped heaps when it came to the 'limits' of being on the bike and being face down on the road. Front wheel lock ups, lowsides, rear wheel lock ups, sliding etc. Never highsided though. I have gone over the handle bars at quite a very fast speed before though.

    I found that when I got on a road bike, I could control the bike safely from day one in the wet, even over the rimutakas. When I had my learners, I went over the rimutakas in some really nasty rain, and I really appreciated all the time I spent falling off dirt bikes! You can feel what your tires want to do more.

    To this day I haven't come off a road bike, but I have come off my uncle's DRZ 400 on his farm heaps!

    I agree with Paulus. A cheap dirt bike and some nice places for you to experience loose surfaces and crashes might be beneficial to you and your riding!

  12. #12
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    Wet/damp grass is very good if you want to try sliding, locking front wheels etc!

    My favourite - frozen lakes with powder snow!

  13. #13
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    Yes sounds good I might have to take my bicycle on some as soon as weather permits... damn it so now it stops raining!

  14. #14
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    Bicycle - distribution of mass entirely different. Not enough weight to lock front wheel - you'll mono or cartwheel.

    Tyre pressures, lean angles = null

    Braking in corners could be helpful on a bicycle though, I would imagine.

  15. #15
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    Quote Originally Posted by Sable View Post
    Bicycle - distribution of mass entirely different. Not enough weight to lock front wheel - you'll mono or cartwheel.
    Nay in the wet, if you hanging off backwards you can do it.

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