v7 sub
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 several hours to find the relevant data. Or sometimes I can't find anything.

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 ! The same will be stated in the 'Bike Info'-collapsible. If you do have official data for such a bike please let me know.

Sometimes I can only find the gearing data and nothing about the chain details of the bike involved. For instance many manuals only list the chain type and not the number of links. 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. You can check the information in the 'Bike Info'-collapsible to see what exactly is not verified. As chain details are not part of any speed or RPM calculations, the related results in the top 3 tables and graphs are not affected in any way and are correct.

In case of not verified chain data, 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 verified 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 Stock setup fields loaded from the database. As of GC version 7 it is possible for me to show additional information on the bike or the way it was verified on the main page, inside the 'Bike Info'-collapsible. Click that button to check the information on what was not verified.

So for bikes classiefied as partly verified, check what was not verified and use related results with caution. 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. Also for Verified bikes you can find additional information in the 'Bike Info'-collabsible. It will at least show what I used to verify the data in the database. However, as even factory manuals contain errors and also I make mistakes (yes really...) I cannot guerantee the reliability of the data and hence not of the calculated results.

Also the GC stated Max Power RPM is not always mentioned in manuals so eventhough the bike is listed as 'verified', this does not always apply to the M.P.RPM. As that does not affect the accurary of the calculations and as you can easily change the GC M.P.RPM yourself that should not be an issue.

Also see GC Disclaimer and Database Errors

 
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