lean angle

[nsmith]

Just asking if anyone knows of a place to find the official lean angle of a Moto Guzzi? Harley makes their numbers easy to find but Guzzi is making things difficult. Thanks.
Most interested in my 2001 Bassa and 2007 Breva 1100

[LowRyter]

 

[Aaron D.]

I like parking lots, but traffic circles are good too.

[bad Chad]

I had a Bassa & have a Breva.  I tried on both to see how far over I could go before something started to scrape, I never succeeded.  I got them both pretty dam far over in parking lots, but eventually I concluded one of two outcomes was approaching, I was going to scrape something or low side it.  I learned either will go far lower than I care to!

[lucky phil]

I like parking lots, but traffic circles are good too.

I do it on race tracks.

Ciao

[Turin]

I've never seen a lean angle spec. Is this common. Or just for bikes with floor boards?

[Perazzimx14]

I found out the hard way how far you can't lean a bike over.

[oldbike54]

 The "lean angle" question has come up twice in the last few weeks , not sure why exactly . Most Guzzis will lean far enough to scare the poo out of the rider .

 Dusty

[Ryan]

Second bike was an Interceptor. Loved this ad when it came out; made me feel even cooler!

[lucky phil]

Second bike was an Interceptor. Loved this ad when it came out; made me feel even cooler!

Doesn't even have his knee on the deck.

Ciao

[Turin]

The new norm

[lucky phil]

The new norm

Yes and my old school style. Looks ancient now.








Ciao

[Muzz]

Hi hysteresis rubber makes quite a difference.

See if they can lean like that on a 60's Avon Speedmaster.

[Kev m]

Just asking if anyone knows of a place to find the official lean angle of a Moto Guzzi? Harley makes their numbers easy to find but Guzzi is making things difficult. Thanks.
Most interested in my 2001 Bassa and 2007 Breva 1100

I don't think I've ever seen a lean angle spec from any OEM other than Harley and the neo-Indian.

[Aaron D.]

I do it on race tracks.

Ciao

Been there, done that.

[Dave_NWTrophy]

Probably easiest to find out yourself.  Get a piece of relatively thin plywood that will span the wheel base, then lift it up until it hits something.  Measure the distance, and calculate the angle.

Dave

[rtbickel]

I think he's approaching 90 degrees here.

[oldbike54]

I think he's approaching 90 degrees here.

 Probably about 42 degrees , Marc Marquez has generated something like 65 degrees and is accepted as the record holder . 90 degrees from vertical would be parallel to the ground .

 Dusty

[acguzzi]

they get up around 60, they have those readouts during the races sometimes.

[Moparnut72]

I used to drag floorboards on my Harley all the time. My Moto Guzzis, not so much, in fact not even close. Nor will I ever, not even going to try. I did notice yesterday after a 200 mile ride that I don't have chicken strips though, proud of myself.   
kk

[Dirk_S]

Aside from the placement of the foot peg mounts (and cylinder heads/handlebars—looking at you Boxer owners), isn’t this more of a tire-and road-related spec?

If you just want to see how far the bike can lean before you scrape pegs, it would seem easy enough to lay a strip of lattice along the edge of the tires, and then use a protractor or adjustable T-square and measure from the peg or cylinder head to the lattice strip.

Manufacturer specs. Pfft. Who needs them when we can just give ourselves reason to buy more tools!

[lucky phil]

Probably about 42 degrees , Marc Marquez has generated something like 65 degrees and is accepted as the record holder . 90 degrees from vertical would be parallel to the ground .

 Dusty

I can tell you now that's way past 45 deg.

Ciao

[Huzo]

I can tell you now that's way past 45 deg.

Ciao

Yes it is more, you can tell by the corners of the frame.
Also the lean angle of the bike will depend whether you are hanging off, in which case the bike will be more upright than say an image of Mike Hailwood for example who was in line with the vertical axis of the bike.
Motocrossers of today are the opposite, they will hold their torso much more vertical and tip the bike in.
If you were going to be examining it properly, you would have to think of the bike and rider as a single unit and the lean angle as a function of the centre of mass.
If Marquez, Hailwood and Chad Reed all come around the same corner (in their usual classic styles), at the same speed on an RC213V, Honda 250 Six and CRF500, when viewed from the front all will have the same lean angle if it’s calculated as a triangle, drawn from the centre of mass (somewhere near the rider’s wedding tackle), directly to the contact patch on the track and a vertical line from the centre of mass to the track (pointing towards the Earth’s core).
Some examples






So it’s apparent that you cannot just ask the question..”What is the maximum lean angle of my bike in a turn..?”
Because that will vary with your riding style.
Moreover..
In a turn you have the combination (resolution), of the weight and centrifugal force vectors compressing the suspension, which further reduces ground clearance.
Other than that it’s fairly simple...!   

[berniebee]

Lean angle? You mean like on the sidestand? Excessive. 

[oldbike54]

I can tell you now that's way past 45 deg.

Ciao

 I think the curbing is fooling you .

 Dusty

[Kev m]

So it’s apparent that you cannot just ask the question..”What is the maximum lean angle of my bike in a turn..?”
Because that will vary with your riding style.

This is unusually sloppy for you. For that statement to be true you need other variables like weight and speed.

But the specification is more simple than that. The theoretical physical limit of lean before hard parts scrape. That is simply measured.

What your attempted to summarize in that statement was that the conditions under which that might be achieved can vary greatly with riding style, but the physical limit remains essentially the same within perhaps RCHs for suspension compression but I assume the spec takes some nominal position on that.

So basically, you're overthinking it.

[Huzo]

This is unusually sloppy for you. For that statement to be true you need other variables like weight and speed.

But the specification is more simple than that. The theoretical physical limit of lean before hard parts scrape. That is simply measured.

What your attempted to summarize in that statement was that the conditions under which that might be achieved can vary greatly with riding style, but the physical limit remains essentially the same within perhaps RCHs for suspension compression but I assume the spec takes some nominal position on that.

So basically, you're overthinking it.

It’s true for sure Kev, that the bike will touch down at a given angle under a given compressive force. Newton and Pythagoras have conspired to convince me of that.
However in the spirit of the OP’s question...
It seemed like a good time to ask if the bike is at 1g in the garage or 1.4 g in a 45 degree lean.

[Kev m]

It’s true for sure Kev, that the bike will touch down at a given angle under a given compressive force. Newton and Pythagoras have conspired to convince me of that.
However in the spirit of the OP’s question...
It seemed like a good time to ask if the bike is at 1g in the garage or 1.4 g in a 45 degree lean.

Not arguing that. Just I expect that for the sake of simple comparative specifications the plywood and protractor method would be sufficient. It's ok to understand that it's an estimate with a small range of deviation based on suspension compression.

[lucky phil]

Not arguing that. Just I expect that for the sake of simple comparative specifications the plywood and protractor method world be sufficient. It's ok to understand that it's an estimate with a small range of deviation breezes on suspension compression.

You guys are all amateurs, none of you have even calculated in frame flex yet 

Ciao

[Huzo]

You guys are all amateurs, none of you have even calculated in frame flex yet 

Ciao

Off you go then mate...
BTW. We can fix the amateur status thing if you electronically deposit some money into my account for the hitherto free advice...