Can someone clarify if the GPB gear ratio settings represent the number of sprocket teeth?
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Quote from: HornetMaX on September 22, 2014, 07:21:11 pmQuote from: teeds on September 22, 2014, 03:40:40 pm
The same was confusing me while considering the required axis needed for a sit on controller build. I then just resigned myself to that only lean is going to work with this game. I had thought that to be more realistic I'd need 3 directional axis -
2/. Bike Lean
3/. Rider Lean
But then noticed the game does not have these, so gave up on it. Then I see this direct steer option, which gave me hope, but it does not work as I had expected at all, as with direct steer on you get to steer but now no lean?
So I though OK I ride road bikes, MX bikes and pushbikes, so how do I ride them..... I Soon found it's not so easy to articulate verbally, for me anyway, can anyone else? Do we need 3 axis as above to get nearer to the real thing?
On a real bike you don't have an independent bike lean input: the bike leans due to the torque you apply to the handlebar and due to your body movements.
That's why if you use direct steer you have no lean input (and rightly so).
Making a sit-on controller that tries to mimic a real motorbike is tough. Very tough. Most of the people I've seen trying this have given the dream up or have ended up with something much farther from their initial objective (maybe still enjoyable, but that's not the same thing).
From a purely theoretical standpoint you'd need:
- the trivial stuff: throttle, clutch and brakes axis.
- 2 input axes for rider lean left/right and fwd/back (rider lean, not bike lean).
- 1 axis associated to a torque sensor: it won't move due to your input (something like a load cell, except it is torsional and not "linear"). That would provide GPB the torque you apply to the handlebar. You'd have to use direct steer torque (not direct steer angle).
- 1 output axis for the steering: GPB will dictate the position of the handlebars. The actuator should be (in principle) perfect: instantaneous and with unlimited torque (in practice, very fast ompared to the typical max frequency of handlebar movements and stronger than your arms).
- 1 output axis for the bike lean: GPB will dictate the bike lean (making your frame lean).
Notice how the steering works: you do not dictate the handlebar angle directly. You apply a torque, then GPB "decides" how the handlebar will move due to the combination of your input and the other torques acting on the front head (coming from road-tire interaction, centrifugal forces and gyro torques).
Even with that (which is very very tricky to build), it won't be perfect as you'd miss the interaction between your body and the chassis (which are kind of simulated by 2 input axis for rider lean).
Potentially you could put the same sort of torque sensor on the controller frame lean axis, but then GPB should provide an additional input.
It's a very very high call for a mere passionate.