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Race Model Serial Numbers

PostPosted: Sat Jan 23, 2021 1:11 pm
by hugoct
Does anyone have any documentation regarding the following questions.
A) Are the WR and WRTT serial numbers a separate run or integrated into the W run? (the model indentifier in the serial number would be WR for both models)
B) Are KR, KRTT and KHRTT serial numbers integrated into the K run? (the model identifiers in the serial number would be KR and KHR)
C) Are XLRTT serial numbers integrated into the XL run? (the model identifier in the serial number would be XLR)
It would seem that the KRs get their own run at some point. The same seems to be true for the XLRTT.
I am questioning as to whether any documentation exists regarding whether this phenomenon did occur and if so for what years.

Re: Race Model Serial Numbers

PostPosted: Mon Feb 08, 2021 11:32 am
by hugoct
Looking at known 1961 XLRTTs, KRs, XLHs, and XLCHs it would appear they all used one serial number run with no duplication between models.
We have found documentation as to outliers in regard to the the odd-odd and even-even number rules in the factory records.
If anyone has a 1961 KR, XLRTT, XLH or XLCH and wants to help with this project please send me a photo of the serial number and crankcase numbers.
These photos will not be shared and are only for verification purposes.
Any help is appreciated.
When we are done with the 1961s we will move to other years to see see what years this phenomenon applies to perhaps even the W models.