(MARRS-RX7) 2011 class rules

John Maslin jhmaslin
Mon Jan 17 16:27:45 CET 2011


OK Jack.  Thanks.  John

On Sat, Jan 15, 2011 at 9:32 PM, Jack Burrows <rx7rainman at gmail.com> wrote:

> OK,  final stab....
>
> The pulley John's talking about has a slightly *smaller* diameter than the
> Racing Beat pulley, and Greg's suggestion is that the diameter not be*larger
> * than the Racing Beat 2-7/8" pulley, so the obvious solution would appear
> to be:
>
> If the air pump is removed an alternate double sheave alternator pulley
> with a diameter not to exceed 2-7/8 inches is allowed; Racing Beat part
> #11479 is recommended.
>
> If this is OK, it'll go into the 2011 class rules and I'll forward it to
> the Powers-That-Be.
>
> Jack
>
> On Fri, Jan 14, 2011 at 10:23 PM, <geaton02 at comcast.net> wrote:
>
>> If the Racing Beat pulley is 2 7/8" then the wording should reflect no
>> alternator pulleys greater than 2 7/8". The larger the alternator pulley the
>> slower it will turn.
>> ----- Original Message -----
>> From: "Owen Schefer" <owen.schefer at gmail.com>
>> To: "Spec RX-7" <spec7 at specrx7.com>
>> Sent: Friday, January 14, 2011 10:02:22 PM
>> Subject: Re: (MARRS-RX7) 2011 class rules
>>
>> Isn't the smaller diameter on an accessory actually gonna spin it faster
>> and be a disadvantage.  To under drive them you would want a small crank
>> (ecentric) pulley and huge accessory pulleys.
>>
>> Not that I am in SPEC7 so I know my vote does not count.
>>
>> Owen
>>
>> On Fri, Jan 14, 2011 at 6:09 PM, John Maslin <jhmaslin at gmail.com> wrote:
>>
>>> Jack/Greg,
>>>
>>> The problem with the revised words is that the $50 Racing Beat pulley is
>>> 2 7/8" in diameter.  The $17 one from RE Speed is advertised as 2 5/8".  At
>>> that cost I'd hate to eliminate it, unless that reduction of 1/4" is seen as
>>> too much of an advantage. I don't know.
>>>
>>> If 2 5/8" is okay, then I suggest changing the language to "If the air
>>> pump is removed an alternate double sheave alternator pulley is allowed;
>>> such as Racing Beat part #11479 or any alternate pulley of at least 2 5/8
>>> inches diameter."  If not, then Jack's version from 6:10 today is fine
>>> (except I think the word is spelled 'sheave').
>>>
>>> John
>>>
>>>
>>>
>>> On Fri, Jan 14, 2011 at 7:49 PM, Gregory Eaton <geaton02 at comcast.net>wrote:
>>>
>>>> Excellent, Thanks for doing this Jack
>>>>
>>>> Sent from my iPhone
>>>>
>>>> On Jan 14, 2011, at 6:10 PM, Jack Burrows <rx7rainman at gmail.com> wrote:
>>>>
>>>> Good point, Greg.  how's this?
>>>>
>>>> If the air pump is removed an alternate double sheeve alternator pulley
>>>> is allowed; Racing Beat part #11479 or any alternate pulley of the same
>>>> dimension is allowed.
>>>>
>>>> Jack
>>>>
>>>> On Fri, Jan 14, 2011 at 2:01 PM, Gregory Eaton < <geaton02 at comcast.net>
>>>> geaton02 at comcast.net> wrote:
>>>>
>>>>> You may want to give a diameter for the pulley, so an underdrive pulley
>>>>> can't be used.
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>> On Jan 13, 2011, at 9:57 PM, John Maslin < <jhmaslin at gmail.com>
>>>>> jhmaslin at gmail.com> wrote:
>>>>>
>>>>> Thanks, Jack.  Looks good to me.
>>>>> John
>>>>>
>>>>> On Wed, Jan 12, 2011 at 9:05 PM, Jack Burrows < <rx7rainman at gmail.com><rx7rainman at gmail.com>
>>>>> rx7rainman at gmail.com> wrote:
>>>>>
>>>>>> OK, so I may or may not have been able to foist the job of Class
>>>>>> Administrator off on an unsuspecting sucker... er... eager volunteer yet.
>>>>>>  I've been asked by the region's Club Racing Committee to provide the 2011
>>>>>> class rules, and what i propose to send them is attached.
>>>>>>
>>>>>> The rules are the same as last year with one exception.  As I
>>>>>> remember, we discussed a couple changes but agreed on one.  We agreed to
>>>>>> accept John Maslin's proposal to drop the apparent specific requirement for
>>>>>> a Racing Beat replacement alternator pulley in cars which have had the
>>>>>> emissions removed per the rules.  A close reading of those rules as they
>>>>>> were written appeared to allow it anyway, but it wasn't clear whether it was
>>>>>> a recommendation or a requirement.  With that in mind, I've modified the
>>>>>> final paragraph to read as follows (changed language highlighted in yellow):
>>>>>>
>>>>>> *10. EMISSIONS SYSTEM ? *Anything performing an exclusively emissions
>>>>>> related function may be removed. The stock phenolic carburetor to intake
>>>>>> manifold spacer shall not be removed or modified. The charcoal canister
>>>>>> shall remain and be unmodified. Removal of the shutter valve from the intake
>>>>>> manifold is permitted. Any resulting holes must be sealed. A block off plate
>>>>>> may be used in place of the air control valve. If not removed, emissions
>>>>>> control devices shall not be modified. If the air pump is removed an
>>>>>> alternate double sheeve alternator pulley is allowed (Racing Beat part
>>>>>> #11479 recommended).
>>>>>>
>>>>>> Otherwise the only difference in the rules was a change at that top
>>>>>> from 2010 to 2011.
>>>>>>
>>>>>> Unless anyone speaks up within the next few days with any heartache, I
>>>>>> intend to send these back to the club office as our class rules for 2011.
>>>>>>
>>>>>> Jack Burrows
>>>>>> SRX7 #71
>>>>>>
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>>>>>>
>>>>>                                                   <#12d8f300d94d9c1b_12d8caaca896c630_12d87b3a1c64c2ba_12d876f30b0855eb_12d8725fce370e6c_12d85e7ef75fcef2_>
>>>>> <#12d8f300d94d9c1b_12d8caaca896c630_12d87b3a1c64c2ba_12d876f30b0855eb_12d8725fce370e6c_12d85e7ef75fcef2_>
>>>>> <#12d8f300d94d9c1b_12d8caaca896c630_12d87b3a1c64c2ba_12d876f30b0855eb_12d8725fce370e6c_12d85e7ef75fcef2_>       <#12d8f300d94d9c1b_12d8caaca896c630_12d87b3a1c64c2ba_12d876f30b0855eb_12d8725fce370e6c_12d85e7ef75fcef2_>
>>>>>
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>>>>>
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>>>>>
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>>>                                                   <#12d8f300d94d9c1b_12d8caaca896c630_12d87b3a1c64c2ba_12d876f30b0855eb_>
>>> <#12d8f300d94d9c1b_12d8caaca896c630_12d87b3a1c64c2ba_12d876f30b0855eb_>
>>> <#12d8f300d94d9c1b_12d8caaca896c630_12d87b3a1c64c2ba_12d876f30b0855eb_>       <#12d8f300d94d9c1b_12d8caaca896c630_12d87b3a1c64c2ba_12d876f30b0855eb_>
>>>
>>> _______________________________________________
>>> Spec7 mailing list,  http://specrx7.com
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>>
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>>
>
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