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Krämer APX-350 MA is now available for MotoSPEC

3/29/2025

 
An example of the Krämer APX-350 MA has been measured and is now available for MotoSPEC.  The APX-350 MA is the homologated model for the MotoAmerica Talent Cup.

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YAMAHA R9 NOW AVAILABILE

11/11/2024

 
The MotoSPEC chassis specification for the 2025 Yamaha R9 is now available.

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TIRE UPDATES:  DUNLOP K108 185/70, BRIDGESTONE R11 120/70 and 160/60

9/30/2024

 
These tires have recently been measured and added to the MotoSPEC Tire library.  Tire specifications and profile graphs are available.

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RECENTLY ADDED:  2024 KTM 990 DUKE

9/30/2024

 
​The 2024 990 Duke has been measured and added to the MotoSPEC chassis library.

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Rear Ride Height References in MotoSPEC

6/23/2024

 
A new video has been posted on the website and the MotoSPEC YouTube channel.
https://www.motospec.ca/videos.html#rideheightref

What if my motorcycle is not listed for MotoSPEC?

6/5/2024

 
If your motorcycle is not listed on the MotoSPEC homepage, it may be that a chassis file for that model has not yet been released.  Please request your motorcycle in your trial application and it will help indicate models of interest for current and future MotoSPEC customers.

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DUNLOP SSP and SSP300 TIRES NOW AVAILABLE

5/12/2024

 
European Dunlops for SSP and SSP300 classes have recently been measured.  These tires are used in the Italian (CIV), Australian and other championships.

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RECENTLY ADDED:  2024 MT-09, 2024 CBR1000RR-R SP, 2023 HD PAN AMERICA

5/12/2024

 
Examples of these modes have been measured and are now available for MotoSPEC.

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WEIGHT TRANSFER MATH CHANNEL

1/24/2024

 
If the motorcycle and rider are traveling in a straight path on level ground, the total weight on the tires is constant (neglecting the weight of the burned fuel).  Weight is transferred between front and rear tires with acceleration and braking but the total weight is constant.

The total weight or force on the tires will only change if the the motorcycle as a whole is accelerating upwards or downwards (i.e. climbing a rise or falling into a dip) or experiencing aerodynamic downforce or lift.

Weight Transfer is defined as the 'increase in rear axle downward load (and corresponding upward increase in the road reaction on the axle) or the corresponding decrease in front axle load' (Race Car Vehicle Dynamics, Milliken) that occurs with forward longitudinal acceleration.

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TOP-OUT SPRINGS

1/8/2024

 
To understand the effect of a top-out spring, it can be best to start by examining the forces in the shock or fork, and looking at the force curve of the suspension. 

The suspension rate can then be understood as the slope of the force curve. 

​A current R1 is used as an example.

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SUZUKI GSX-8R AND GSX-8S

12/16/2023

 
Examples of the GSX-8R and GSX-8S have been measured and the MotoSPEC files are now available.
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KAWASAKI ZX-4RR AND ZX-25R AVAILABLE FOR MOTOSPEC

11/21/2023

 
Both the ZX-4RR and ZX-25R are now available for MotoSPEC. 

The chassis specifications can be downloaded from the customer section of MotoSPEC website.

The ZX-4RR and ZX-25R are also available with trial licenses of MotoSPEC.

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TRACKDAZ 'ASK A SUPERBIKE GENIUS' VIDEOS

11/13/2023

 
TrackDaz 'Ask A Superbike Genius' series on MotoSPEC can be viewed here.

BRIDGESTONE TIRE SPECS NOW AVAILABLE

3/1/2023

 
Bridgestone slicks and treaded tires have been measured and are now available for MotoSPEC.


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2023 KTM 450 SX-F NOW AVAILABLE

9/14/2022

 
An example of the 2023 KTM 450 SX-F has been measured and the files are now released for MotoSPEC.

The 2023 SX-F chassis is completely revised, with new frame tube profiles and forged upper shock mount.


Many thanks to Mission Cycle in Angus, Ontario!



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REAR SUSPENSION LINKAGES

3/18/2022

 
MotoSPEC supports all the common rear suspension configurations, and a lot of less common ones also.

Many of the suspension configurations can also be specified with eccentric rear axles.


FRAME-MOUNTED ROCKER

Below is the Frame-Mounted Rocker that is found on 2005 and later Yamaha R6, and 2009 and later Yamaha R1.

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REAR RIDE HEIGHT GAUGES IN MotoSPEC

2/6/2022

 
Ride Height Gauges are used as a reference for measuring the vertical position of the rear wheel relative to the frame.

A Ride Height Gauge is a better reference for vertical rear wheel position than a point on the seat cowl or rear subframe, which can be damaged or bent in a crash.

The MotoSPEC Ride Height Gauge function represents the physical gauge in the chassis program, calculating the gauge measurement as setup changes are investigated.

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Ducati ride height gauge on Kyle Wyman's Ducati V4 R


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NEW MODELS ADDED IN 2021

12/22/2021

 
Additions to the MotoSPEC library of chassis files in 2021 include the Ducati Panigale V2, BMW M1000RR and Yamaha R7.


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MotoSPEC 2021 IMPROVEMENTS

12/22/2021

 
Updates made to MotoSPEC during 2021 include force-based Dynamic Presets, improved Fork specifications, and Multi-Rate rear springs.


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OULTON PARK WITH FS-3 KAWASAKI

6/24/2021

 
With British Superbike kicking off this weekend, FS-3 Kawasaki crew chief Ian Prestwood shows how he uses MotoSPEC to simulate and evaluate the effect of setup changes at Oulton Park.


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RECENT UPDATES

4/26/2021

 
Recent modifications to MotoSPEC include a revised but familiar interface, improved component specifications and custom colors.
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MotoSPEC CHASSIS FILES (MS1 and MS3)

5/26/2020

 
There are two types of chassis files used with MotoSPEC, indicated by their extension: MS1 and MS3.

The two types of chassis files allow MotoSPEC to be configured in multiple ways, providing flexibility to accommodate different usage scenarios.



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FORK POSITION OPTIONS

4/21/2020

 
There are four options for specifying fork position in MotoSPEC, to accommodate every method in use.
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MotoSPEC RIGHT-CLICK CONTEXT MENU

2/3/2020

 
Right-clicking in one of the MotoSPEC columns will display a context menu that allows settings to be copied from another column.

PRO licenses can copy the entire chassis specification and settings from another column, and also clear all chassis specifications and settings from the column.




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DUNLOP FLAT TRACK TIRES

1/23/2020

 
Dunlop has provided the inflated profiles for their flat-track tires - the new tubeless DT4's and also the pre-2020 tubed DT3's.


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