MV Agusta Forum banner

1 - 20 of 67 Posts

·
Registered
Joined
·
6,047 Posts
Discussion Starter #1
Here is one for all you race guys. We have seen extreme lean angles with the top racers especially the MotoGP guys. (56 to 61 degrees is common) They are on top of the line race slicks so for us mortal people what would be the most lean angle to be achieved on a set of DOT tires, say Michelin Pilot Power 3? Is there any type of gadget that can be used on a Bike to determine lean angle?
 

·
Registered
Joined
·
180 Posts
Can’t say I’ve heard of any gadget that could do what you are asking.
I’d suggest take your bike to a track where the danger is managed and minimal and lean as far as your heart and balls will allow.
Over many laps and much time the lean angle will increase. There will be a limit there somewhere though.
 
  • Like
Reactions: NTGmv1k and XPARAUK

·
Registered
Joined
·
1,911 Posts
Number 2 Craftsman tools makes an angle finder with a magnetic base or can be hung on a wire . BUT, how to see it? use the magnetic base then borrow(hopefully you know someone that has one ) One of those sport cameras( sorry 4:30 am no sleepforget the name brand) and record the angle finder readings as your doing laps on track day.
 

·
Registered
Joined
·
180 Posts
Hmmm! I’m reading the question differently.
Number2 is asking if there’s a gadget that will give you maximum lean angle for a specific tyre.
That will attach to a bike.
??????
 

·
Registered
Joined
·
1,920 Posts
Hmmm! I’m reading the question differently.
Number2 is asking if there’s a gadget that will give you maximum lean angle for a specific tyre.
That will attach to a bike.
??????
While I get your point, What is considered a gadget?
gadget
/ˈɡadʒɪt/
a small mechanical or electronic device or tool, especially an ingenious or novel one.
-google

You can go the expensive route like a seperate device. Or download a free app, mount your phone in a phoneholder.
Take a everyday ride to work and see if it works. If its sh!t, then have a look at a more serious option.
 

·
Administrator
Joined
·
20,776 Posts
Or....get a datalogger and attach one input to an inertial measurement unit .... hmmm, newer bikes have IMUs for traction control and cornering ABS...just have to tap into that signal .....

Any one here a data acquisition expert? Most high end race teams have one on staff....
 

·
Registered
Joined
·
6,047 Posts
Discussion Starter #10
My primary question was regarding street tires and their limit related to lean angle. I have felt the edge of my front tire while riding at the Gap but never really figured out how far I was leaned over. Is 45degrees to high a number for street tires?

Chuck maybe you could demonstrate that 90 degree lean angle this year :)
 

·
Super Moderator
Joined
·
22,870 Posts
George, I hope to NOT demonstrate that ever again!

45 degrees is easily achievable on street tires. The Aliens have tires that are designed for higher lean angles.

I would think there is an iPhone App or other device to measure and record lean angles.
 

·
Super Moderator
Joined
·
22,870 Posts
Mounting a lean sensor on the handle bars will induce errors as the bars are moved.
 

·
Registered
Joined
·
1,116 Posts
Or....get a datalogger and attach one input to an inertial measurement unit .... hmmm, newer bikes have IMUs for traction control and cornering ABS...just have to tap into that signal .....

Any one here a data acquisition expert? Most high end race teams have one on staff....
You cant normally just tap into the imu in its unprocessed state and get lean angle,

There are a few products out there that use gyro and accelerators to achieve what you want. I use Race Technology DL series and Dash2 for data logging, these have a 20 Hz GPS, gyros and accelermoters and will create a stable lean angle for you, but you are going to spend a £1300 or so and you need to wore it in to the bike.

I know some trackday boys uses these https://www.rg-racing.com/browseBike/Suzuki/GSX-R1000/2016_L6/SPEEDANGLE2 Which report the lean angle, I don't know if they are accurate or if they have a hero button that adds 5 degrees to the display :)
 
  • Like
Reactions: esq'z me

·
Super Moderator
Joined
·
22,870 Posts
"Hero Button"...love it!
 
  • Like
Reactions: esq'z me

·
Administrator
Joined
·
20,776 Posts
You cant normally just tap into the imu in its unprocessed state and get lean angle,
:)

Yeah...didn't say it would be easy, possible or cheap....but the IMU is there !!!!
 

·
Registered
Joined
·
180 Posts
I know this from personal experience...at 90 degrees there is no traction.......<img src="http://www.mvagusta.net/forum/images/smilies/smoking.gif" border="0" alt="" title="Smoking" class="inlineimg" />
That is my experience too??????
 
1 - 20 of 67 Posts
Top