v6 .5
GC

Gearing Commander Data Verification

Eventhough I ask users of the GC website to supply all gearing data for the bike they want me to add, I always verify that data using owners manuals, service manuals, press releases, technical specification sheets or official factory websites. So for every bike you want me to add I start an internet search wich can take up to an hour to find the relevant data. Or not.....

In that case I check the 'Add Bike' request for the source of the data supplied. If it is 'owners manual' or 'service manual' I ask the requester to scan or photograph it and mail it to me. If requester also has no reliable source I may still add the bike if enough information is available from un-official sources (like requester says: "I counted the teeth") or a bike forum states the tech specifcation. In that case the bike will be listed as "NOT VERIFIED" on the History page and it will also be shown on the main page by this logo after loading the data for the bike:

In that case non of the used data is verified so please use all the calculated results with caution as they may be incorrect ! If you do have official data for such a bike please let me know.

Sometimes I can only find the gearing data of the bike involved. For instance many manuals only list the chain type and not the number of links of the chain. In that case I do an Internet search for OEM chains for that bike and see if the same number of links comes up a lot. In that case I will list the number of links but I will list the bike as being "CHAIN data NOT  VERIFIED" on the History page and it will also be shown on the main page by this logo after loading the data for the bike:

So either the chain pitch is not verified or the mentioned number of chain links is not verfied or both are not verified. All other data has been verified. This does not effect any speed or torque related results in the top 3 tables and graphs, they are correct.

In this case please use the calculated CHAIN results (bottom 2 tables) with caution as they may be incorrect ! If you do have official chain data for such a bike please let me know.
 

Sometimes I can only find part of the data involved. For instance if the rear tire size is unclear or the final drive is unclear and cannot be verfied it will be listed as "PARTLY VERIFIED" and it will also be shown on the main page by this logo after loading the data for the bike:

So one or more items are not verified, this can be any of the fields loaded from the database. Unfortunately it is not possible to indicate what exact part of data is Not verified and which is. In this case please use the all calculated results with caution as they may be incorrect !
If you do have official data for such a bike please let me know.

If instead a bike factory logo shows, all displayed gearing data has been verified and all calculated results should be accurate.  However even factory manuals contain errors and also I can make mistakes (yes really...) So though it should be OK, even in this case I cannot guerantee the reliability. Also the GC stated M.P.RPM is not always mentioned in manuals so eventhough the bike is stated as 'verified', this does not always apply to the M.P.RPM. But as you can change the GC M.P.RPM yourself that should not be an issue.

 

Also see GC Disclaimer and Database Errors

 

 
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