Australian Thunderbikes

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Any of them coming over to New Zealand for the Barry Sheen Trans Tasman racing at Hampton Downs?
I got into a bit of classic racing last year for fun, I looked at Brit bikes but settled on building up a 900 BMW based mainly on cost and ease of parts availability....and that they are considered and old mans bike here... :D
It is however a slug compared to the Commandos and Guzzis but I'm having a lot of fun on it.
 
Yes be good to see them in NZ, where do I find the rules and regs governing the bike specs?
Regards Mike
 
A BMW 900 is a beautiful machine, I would love to build one as a rennsport replica.
Any rules which allow inclusion of two strokes or four cylinder superbikes in races with thunderbikes, will always kill off the thunderbikes. In our 'historic' classes in Australia, thunderbikes are poorly represented, most stay at home rusting in the garage. Our sixties historic (period 4) class is dominated by 1000cc alcohol fuelled Honda CB750s and two strokes. Our seventies historic (period 5) class is dominated by Suzuki Katanas and two strokes. The only thunderbikes which turn up are a 1400cc Vincent retro, and Ducati 900 which is always at the back of the field in every race it is entered.
I set up the website (above) so that people can actually recognise what a 'thunderbike' is. Once you can identify them as the old technology singles, twins and triples, there is some hope that you can see the value in racing them in their own capacity classes, regardless of the year of manufacture.
 
I run the R90 ( bitza) in pre 1976 open class, there are no Japanese bikes :lol: and no Japanese parts allowed either....sure.... its not reflecting history but the Jap bikes are catered for in Post Classics.
I can see a day soon where the two clubs may have to merge....
There are a few Commandos in the open class, ones that are heavily modified with bugger all original parts and ones that the BMW has a chance against....I ruled Commandos out as being to expensive to race on my limited funds.

heres a link to the Register for Mike to view the rules.
http://www.nzcmrr.com/index
and the Barry Sheene Memorial
http://www.barrysheenetranstasman.co.nz/
should be a good weekend.

link to my BMW build thread if anyone has an interest in building a race bike on a shoe string... :roll:
http://www.advrider.com/forums/showthread.php?t=790873
 
I believe it is a 1000cc Paul Smart Replica Ducati . It still has the old technology two valve aircooled fourstroke engine.

Australian Thunderbikes
 
That 101 commando is mine what I am currently getting back into a raceworthy condition.

Australian Thunderbikes



starting to get closer!
 
Your commando racer is a really beautiful old thing. I hope I can get in a race against it some time. There was an interesting commando racer at the Broadford Bonanza. I know what my own motor sounds like and I don't know how that guy ever keeps a bottom end in his. It was a bike that I've never seen racing at local historic meetings. I also saw three Rob North Rocket threes which never race . I love to get all the old two valve bikes onto the starting grid with no two strokes or four cylinder superbikes involved - I think the class would be a real crowd pleaser. I've only seen one Ducati running in period 5, and he is always down the back of the field. We should get those guys too. The class should be a cross period feature race. It would suit BOTT and BEARs competitors and could even run an A grade section for Horner's Irving Vincent, and the Ducati I posted above, there are also three 900s still racing in BEARS. It will take a change of mindset, but it could be really good.
 
thanks for the links, i already had the NZ rules as a mate races in the 500 cc class and does well.
Will keep trak of how the T'bike go in Aus
Regards Mike
 
Preston MCC in Melbourne are running a thunderbike class at the Pirelli RR Championships, and Formula Extreme run a Pro-thunder class. Neither are attracting many entries yet. HMRAV are still looking at the proposed class and assessing its potential. We live in hope. My feeling is that it could become 'bigger than Ben Hur'. There are so many of these old two valve singles, twins, and triples around Australia, and very few are ever raced successfully because they are required to run in classes dominated by two strokes and superbikes. The type of racing available doesn't justify the cost of running a thunderbike. All any of us ever really want is a decent competitive ride for our money.
 
If there is a feature race, it certainly won't be Thunderbikes. Anything which might drop oil is treated like cholera.
 
The Horner Bros 'Irving Vincent' is always a [Thundering] stand out in the G.P. Historics race, funny that it was Moto 2 that were the culprits in oiling up the track last time. Course, if they were pukka [2T] race bikes [ 2Ts in Historics only now, oh the irony!] they couldn't dump all that oil either..
 
Our mentality in road racing has changed. Now the guys complain about patches in the bitumen surface, the track has to be super smooth, and not a speck of oil. In the days when the norton twins were racing, the circuits weren't too flash in Australia. The other thing is that very few Norton twins ever raced in Australia in the old days (70s). The Seeley frame I now own was imported by an A grader who had the intention of using the commando engine. It was never built. The guy bought a nice new H2R Kawasaki, and was competitive that way against the best. I believe that Peter Williams was only ever successful against the two strokes in the UK, when it was raining ? I only built my bike simply because it was a good thing to do. I've never been under any delusion about it. It sat around for twenty years doing nothing, but when I actually raced it, it totally surprised me. I had never imagined that such an horrific motor could be so effective. It is without doubt, the best handling bike I've ever ridden, and with the close box - it responds instantly.
The simple fact is that a commando based bike will always be blitzed by even a 70s 350cc two stroke, or decent 750cc four cylinder machine. In our historic races these three main types of machine are always represented, so commandos and air cooled ducatis always finish down the back in all races. The mix of machines is a silly way to run races. We would have been much better off running each main type of machine separately in capacity classes, regardless of date of manufacture.
 
I was around the initial classic racing scene when it got going in N.Z., you`d know they totally excluded Japanese machines & the snobs wanted to exclude non-pukka roadrace bikes too, but settled for running their own classes instead, but some dont mind mixing it up, just like it was back in the day.
http://www.youtube.com/watch?v=i9vs-hn6 ... re=related
 
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