here i found some bike's torque settings:
http://www.af1racing.com/store/Scripts/techtips.asp (http://www.af1racing.com/store/Scripts/techtips.asp)
http://www.scribd.com/doc/92346285/RS250torque-Specs (http://www.scribd.com/doc/92346285/RS250torque-Specs)
@Alby46: These torques are not usefull for GPBikes, as they are the tightening force needed for the screws. ;D
What you want to map a specific motor, is a dyno sheet, like this one ;)
(http://image.sportrider.com/f/18264118+w750+st0/146_04+sportbike_peformance_dyno_charts+honda_torque.jpg)
Just google "dyno bike name" and you will find plenty of them.
Only need to map the value now.
My base for YZ450F (SM)
(http://www.roteg.nl/Image/V1YAYZ450F-0913/Yamaha_YZF450_10_Power_v_Std-1.jpg)
A first engine has been made, but need more work.
What issues do you have?
I plan to do a 600, so if we could share the problems encountered, it would ease the work. ;)
Quote from: neoraptor on December 19, 2013, 02:10:57 PM
@Alby46: These torques are not usefull for GPBikes, as they are the tightening force needed for the screws. ;D
What you want to map a specific motor, is a dyno sheet, like this one ;)
(http://image.sportrider.com/f/18264118+w750+st0/146_04+sportbike_peformance_dyno_charts+honda_torque.jpg)
Just google "dyno bike name" and you will find plenty of them.
Only need to map the value now.
thank you, i'll look now for the rsv250 dyno :)
Don't know why i didn't about it before, but tourist trophy ( the ps2 game ) we know, it's an arcade game, but bike data should be taken from real bikes. I'll give it a look tomorrow
For a 250 just double the torque figures for the msm 125 figures. A 250 twin is just two 125 cylinders :)
Quote from: cjmc78 on December 19, 2013, 08:07:30 PM
For a 250 just double the torque figures for the msm 125 figures. A 250 twin is just two 125 cylinders :)
That may be more or less true for the power, but what about the engine mass ? What about the engine inertia ?
There are plenty of things that are accurately simulated in GPB ...
MaX.
a mono-cylinder 250 has almost the double of the power of a 125
Quote from: HornetMaX on December 19, 2013, 08:14:09 PM
Quote from: cjmc78 on December 19, 2013, 08:07:30 PM
For a 250 just double the torque figures for the msm 125 figures. A 250 twin is just two 125 cylinders :)
That may be more or less true for the power, but what about the engine mass ? What about the engine inertia ?
There are plenty of things that are accurately simulated in GPB ...
MaX.
yes but now he is making the engn file probably for the 125 chassis, others values are in others files, and many are very difficult to have, indeed impossible
Quote from: oppolo on December 19, 2013, 08:27:48 PM
Quote from: HornetMaX on December 19, 2013, 08:14:09 PM
Quote from: cjmc78 on December 19, 2013, 08:07:30 PM
For a 250 just double the torque figures for the msm 125 figures. A 250 twin is just two 125 cylinders :)
That may be more or less true for the power, but what about the engine mass ? What about the engine inertia ?
There are plenty of things that are accurately simulated in GPB ...
MaX.
yes but now he is making the engn file probably for the 125 chassis, others values are in others files, and many are very difficult to have, indeed impossible
That's the hard part of creating a new bike. For some parameters, even if the exact value is close to impossible to get, you can make an educated guess if you know how to do it.
But if you just take a 125 and double the power you don't get a 250: you get a 125 with the double of the power :)
MaX.
That's true. I only wanted to do a quick test to see if it worked. Bike's a lot of fun
Quote from: HornetMaX on December 19, 2013, 08:39:41 PM
But if you just take a 125 and double the power you don't get a 250: you get a 125 with the double of the power :)
yes it is
he should also increase at least the inerzia, engine weight, bike weight and have a real torque curve because it's too easy double all parameters, sure the torque of a 250 is not double and also max rpm changes, but another difficult thing are the tyres, we dont' have a set for the 250 class...but anyway this is only the begining in modding GPB ::)
Quotethank you, i'll look now for the rsv250 dyno :)
Sorry to say that, but i don´t think you will find some (of the RSV250 and the RSW250 aswell).
in fact i didn't find it, gonna give a look at tourist trophy
Quotein fact i didn't find it, gonna give a look at tourist trophy
That´s the fact i was talking about in the other threat.
Its really hard to find such info on the internet, it´s nearly impossible.
You can find some dynos for the GP125 Honda.
If you would like to find some for the GP250 Production Racer (Honda, Yamaha) - i´m not talking about the Works Bikes - it´s even harder.
For the GP500/MotoGP Bikes it is impossible to find anything.
Even for a proper 600 Supersport build (i mean World Supersport Level Engines) it is a mess to find some accurate dynoreadings.
we must create them without reference points
Here is a dyno from a SSP engine : http://www.kwsmotorsports.com/yr6.htm
It should be close of what we need (137Ps for a 600).
Yes, you can build on that...but it´s not really close to World Supersport Level :-)
SSP 600 delivers more than 145bhp on that level (w/o the use of Carillo conrods,and +2mm bore....)
I would use the lower dynograph (128bhp)as base build personally, its closer to reality of a Supersport engine.
But it will be a good base to develop engine characteristic and physics for a 600cc engine.
If we have a proper base we can build other engines in a shorter time (e.g. CBR600RR, ZX6R -they all have different engine characteristics)