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john feakes
Advanced Member
Victoria
791 Posts |
 Posted - 22 Feb 2008 : 10:41:15 AM
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Hi people, thought I should draw your attention to some new rules and the clarification I have from M.A.
15.2.3.4 All 4 stroke classes must be fitted with either heavy duty replacement crash resistant engine end cases providing they are the same thickness or greater than the original and are made of a strong material or be fitted with engine end case protectors made from composite materials such as carbon fibre or kevlar.
Plates and/or bars of aluminium or steel are also permitted. These additions must protect the lateral covers/engine cases that contain oil and which may be in contact with the ground during a crash.
The chief scrutineer at any event will decide if a machine must be fitted with this protection, and, if fitted, that it is suitable and sturdy and complies with the 2008 G.C.R.15.2.3.4.
Original cases will not be accepted without a cover.
16.4.3.1 All exhaust systems must be fitted with an effective silencer.(I AM ADVISED THAT THIS MUST BE A VISIBLE ADD ON SILENCER)
16.4.4.4 All machines must be fitted with an oil catch tank of a minimum capacity of 500cc, to be emptied at the end of each race.
Cheers, John
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125 RIDERS' ALLIANCE
A wise person simplifies the complicated, a fool complicates the simple. |
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john feakes
Advanced Member
Victoria
791 Posts |
Posted - 22 Feb 2008 : 1:52:32 PM
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With regard to 15.2.3.4 I have asked for further clarification on what is deemed to be an adequate end cover. Will let you know when I know.
Cheers, John |
125 RIDERS' ALLIANCE
A wise person simplifies the complicated, a fool complicates the simple. |
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beezerman
Level 1 Member
Victoria
5 Posts |
Posted - 22 Aug 2008 : 5:44:40 PM
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Hi everybody , i have a question about the "new rules " regarding the fitment of mufflers and engine case protectors and catch tanks ? I'm riding a classic faired triumph , do these rules apply ? Have not seen a lot or posts about this subject . Regards Graeme Lasslett |
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john
Forum Moderator
Victoria
3130 Posts |
Posted - 22 Aug 2008 : 9:07:21 PM
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I do not have the rules in front of me at this moment. But I am confident Historic machines DO NOT need the crankcase protectors. I am confident they are written in the modern section and do not inclue the Historics.
The major point to reinforce taht interpretation is that Kevlar or carbon fibre are prohibited products within Historics.
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John Daley Sidecar #68
' there are those who do, those who dont do and those who undo. We must lampoon the latter." |
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john feakes
Advanced Member
Victoria
791 Posts |
Posted - 23 Aug 2008 : 10:31:30 AM
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Hi Graeme, I didn't realise it was you hiding behind Beezerman.
These rules are somewhat vague and perhaps common sense should prevail. Your bike would have substantial alloy covers which should survive intact in a crash. I suspect that the introduction of this rule was aimed at modern bikes which, presumably, have very flimsy end covers. The silencer rule, I have been told, should not be included as it was not approved by the historic commission.
Unfortunately the final decision will fall on the scrutineer so the only sensible thing I can suggest is that you talk to the scrutineer to see how he will interpret these things on the day. Sorry I am not of much help. How's the Bantam?
Look forward to catching up at the Southern Classic.
Cheers, John  |
125 RIDERS' ALLIANCE
A wise person simplifies the complicated, a fool complicates the simple. |
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beezerman
Level 1 Member
Victoria
5 Posts |
Posted - 23 Aug 2008 : 2:23:39 PM
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Hi John , thanks for responding to my questions . What a wonderful helpfull site , Classic Motorcycling Forums is . I will try in future to be a more active member . So looking forward to the Southern Classic the Triton and Bantam are ready for racing , also looking forward to having a chat with you ! Kind regards Graeme |
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GD66
Senior Member
Western Australia
390 Posts |
Posted - 23 Aug 2008 : 3:47:34 PM
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It would seem these two rules are kneejerk reactions: the crankcase covers were instituted without research or discussion as a kneejerk response to a machine at the Eastern Creek Aust champs round which crashed in the wet, and then rejoined the race, leaving a trail of oil round the racing line on an already-wet circuit. Tellingly, it is a rule which has not been replicated by any other race body in the world, right up to world superbike level, which indicates just how ineffective and unnecessary it is. Thankfully, it doesn't apply to historic racing, but the one we need to watch is the noise situation. After much discussion in the vmx world, several entrants still turned up at the vmx nats in Tasmania with NO attempt at silencing, pretty much a slap in the face for the organisers who had done their best to institute noise limitation in a calm and gentle manner. We've been advised that we'll have to pull our heads in at Broadford in the future, which is fair enough, so please guys don't just turn up with enormous unfettered drainpipes on your bike, and then pack a huge tantrum when you are told to nick off. Some attempt must be seen to be made, otherwise the noise police will get more and more toey, and get more draconian backing. It's not hard, and it needn't hamstring your bike's performance, but it will become more and more necessary (including the Island Classic), so let's get it sorted..... |
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trumpybob
Level 2 Member
New South Wales
29 Posts |
Posted - 23 Aug 2008 : 8:38:28 PM
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In relation to the question of silencers item No. HRR388 of the May meeting of the Historic Commission (minutes are available on MA's site) show that rule was questioned, thank goodness, and the decision was to revert back to the 2007 rule which simply states that bikes must comply with the set noise limits as per the G.C.R.'s whether they have mufflers or not.
Cheers hope that helps. Bob. |
Racing is everything,the rest of the time is just waiting |
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john feakes
Advanced Member
Victoria
791 Posts |
Posted - 24 Aug 2008 : 08:23:09 AM
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Thanks for that information Bob. Good news.
Unfortunately the "noise" issue is not just a simple issue of noise although of course anyone can tell a noisy bike from the not so noisy ones. The spl meter used to measure noise is not a human ear and measures pressure rather than "noise". I guess we have all heard of the silent dog whistle, a device that emits sound at a frequency too high for the human ear to detect. Engines too can emit high frequency sounds. Sometimes the noisy engine will pass the test yet one that seems quiet can fail.
Also, induction roar comes into the equation.
The only way we will learn what the trackside spl meter is recording is by riding past it. Time will tell.
I wish everyone good luck.
Cheers, John |
125 RIDERS' ALLIANCE
A wise person simplifies the complicated, a fool complicates the simple. |
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