I’ve been away on holiday, so this is the first I’ve heard of this issue.
The current technical committee does not clarify rules. If a member wishes to change the wording in a written rule, a rule change proposal must be submitted. As far as I know, we have interpreted the 5" measurement as contact patch. We will be inspecting the rigs with this criteria unless I’m informed otherwise.
Send all comments to me at Vrra-tech@hotmail.com
Rick
Paul, I don’t think that is a fair comment. The people most likely to read the rules are those looking to join the fun. If people are going to proceed with building rigs, it is reasonable to want to know how they should be built. To that end, getting a clarification is important before making the investment.
Let the building begin.
To set the record straight, a few facts. First - I have been dealing with rules for over 35 years, starting with being a member of the Race Commitee of the Whitby Kart club. For 20 years I was a member of VARAC, and served two terms on the BoD. During that time I wrote VARAC’s Group70 rules set. Those rules have now been adopted by at least 2 US Vintage clubs. So I certainly feel I have a firm understanding of both the spirit, and intent of the rules that govern vintage racing, of any type.
Secondly, I am personally insulted by the insinuation that I was not forthright in my inquiry regarding rule 10f. I contacted the Tech Commitee regarding this in September of last year. My initial question specifically asked if this was a measurement of the bulge, or the tread. I was asked to put this in an email (posted above), and rec’d on 9/29/11 the reply I posted above. This has now been confirmed by Rick in his latest post to this thread. As far as I am concerned that is the end of the matter.
I will submit a ‘rule change proposal’ for the next AGM, that the wording of 10f be amended to accurately reflect the Tech Commitee’s stated application of this rule. In addition, I will propose that the Tech Commitee adopt the standard motorsport practice of using ‘Tech Bulletins’, as a means of communicating any decision(s) to the membership.
Brian
just a quick question here, are alloy mini rims ok for the chair, couldnt see any rules or reasons against them but just want to be sure before i go get them
cheers
vic
Yes they are ok. Just be sure mag is not too wide for tire,
and that offset will not have inside of tire rubbing on chair.
+1 on the mag being eligible as a chair wheel. The Mini 10 x 4 mag wheel with standard offset should fit with not problems on a Whittaker/GBR frame.
Whittaker/GBR frame.
Hey GBF please, (Gilmour Bracket and Flange). Whose bike did you get? Paul.
apologies Paul, fingers engaged, not brain. 
I have one ten inch alloy mag wheel on my period one Norton Feddeman (sp) chair that was raced in the 60’s so it should be legal. (I had it cracked checked before using it btw.) Check with Rick Yates the Holy Guardian Of Sacred Machine Preparation Eligibility Rules. HGOSMPER for short. No insult intended Rick. Someday (tell me when someday is Paul and Marie) we will resurrect the money pit/track friction modifier. Three cheers for oil pans.
Cheers Paul B, the other Paul that believes in the value of oil pans/v.s. pain,suffering and loss of income… having been there. Just expressing an informed opinion as a member. I know that exceeded the question parameters scooterboy.
Someday (tell me when someday is Paul and Marie) we will resurrect the money pit/track friction modifier.
If you don’t do it this year the odds are 10 to 1 it won’t happen, which may be good or bad depending on the outcome. As we age like a bottle of wine, sometimes the stopper gets lose, and the contents modified against our will. I have a wonky knee and tendons from an old injury (So they tell me) which has never bothered me in decades. Should know better after the practice day if it will be a problem. At least we have no more bump starts to worry about. I like you both well, and this is not intended to push you back onto the track, just an opinion. Paul.
Wow.you guys are getting obtruse in your old age 
cheers for the replies on the chair alloys