Thunderbike - power weight ratio class

**Drew** · 27th July 2014, 09:38

Originally Posted by Moto-Dynamix

The man I chose to build that motor used a set of cams he thought would be good in it, that was where the problem with it came from. I NEVER build motors myself, I pay a professional to do that work, I am only the chassis parts fitter really

Cool. Your subcontractor fucked it up. Still means you get the blame.

**Shaun Harris** · 27th July 2014, 09:48

Originally Posted by Drew

Cool. Your subcontractor fucked it up. Still means you get the blame.

Haha we ended up in small claims over that motor also, and YEP I WON!!!!

Would love to have another one built by a true professional though, that thing had awesome top end, Ray Clee on his 1000 could only just pass me at the end of main straight at ch ch

**scracha** · 27th July 2014, 10:58

Originally Posted by suzuki21

The class sounds awesome, but MNZ cant even police basic stuff so it will be down to riders honesty which will work........... aye. Eg: An ex NZSBK GSXR750 with lightened crank and 813 piston kit with Alloy rods and kit ignition will comply because I can tune it to 125hp at the flip of a switch?

>5.2 Bikes are only permitted to have one loaded fuel map at any one time, and any bike found with multiple maps loaded in the software will
>be excluded. Any ‘On-the-fly’ switch-able map is strictly forbidden.
>6. Controls
>6.1 Throttle stops or cable adjustments must be fixed or secured in a manner that will prevent adjustment by the rider or crew without the
>use of tools prior to dyno testing.
>6.2 Switches or other methods designed to affect horsepower readings during dyno testing are strictly prohibited.
>6.3 Machines are restricted to the mounting and use of one ignition or engine management module during all competition. Modules with more
>than one setting must be mounted in such a way that the settings cannot be altered by the rider or crew while on course or prior to dyno
>testing.
>7. Technical Inspection
>7.1 The dyno operator, Technical Official or person appointed by the race or series organisers to ensure eligibility, may request removal of
>bodywork before, during or after dyno testing, and may request removal of other components for inspection.
>7.2 Any machine not capable of post race dyno testing will be deemed to have failed the dyno test.
>7.3 Machines will be run on the dyno until, in the opinion of the dyno operator the maximum output is achieved. If in the op

I don't believe it's a class that's taken too seriously in the UK. It's a club racing class FFS, it's not designed to replace Superbike/Supersport and nobody's gonna get an invite from a Word Superbike team for winning a Thunderbike series. To be honest, it's usually pretty obvious when one bike has extra horsepower and I'd imagine the Technical Officials would spend a bit more time inspecting suspicious bikes.

**Shaun Harris** · 27th July 2014, 11:09

All the above technical details again show why we in NZ should race f3 f2 f1 rules. There is to much to police professionally like is done in the uk and other countries

**nodrog:Me** · 27th July 2014, 11:32

Originally Posted by Moto-Dynamix

All the above technical details again show why we in NZ should race f3 f2 f1 rules. There is to much to police professionally like is done in the uk and other countries

wheres my motorbike cunt!

**scracha** · 27th July 2014, 21:47

Originally Posted by Moto-Dynamix

All the above technical details again show why we in NZ should race f3 f2 f1 rules. There is to much to police professionally like is done in the uk and other countries

You can argue the toss about Superbike/Supersport reverting back to F1/F2 for the Nats all you like. This is about having closer racing over less classes at club level. I'd argue that weighing, dynoing and checking mid-race power adjustments are disabled for 2 or 3 selected/random bikes is easier than the complete teardown to check for say, engine mods.

**Drew** · 28th July 2014, 06:21

Originally Posted by Moto-Dynamix

All the above technical details again show why we in NZ should race f3 f2 f1 rules. There is to much to police professionally like is done in the uk and other countries

I don't think so. We are a long way behind the rest of the world when it comes to our bike racing. In nearly every aspect of it. Reverting to an outdated set of rules and doing our own thing will not help that.

The technical details are already sorted, by the folk that use this format already. Employ those, and don't fuck about with them.

**Shaun Harris** · 28th July 2014, 07:55

Originally Posted by Drew

I don't think so. We are a long way behind the rest of the world when it comes to our bike racing. In nearly every aspect of it. Reverting to an outdated set of rules and doing our own thing will not help that.

The technical details are already sorted, by the folk that use this format already. Employ those, and don't fuck about with them.

Because we are a small nation where no real money can be generated from the Racing scene unlike the UK for example. IMO, we need to get back to F rules which will allow the fields to grow even more than they currently are.

We cannot afford a Dyno at the track, the operator to operate it, the scritineering tech man ( That actually knows what he/she is doing) and the costs go on

**Shaun Harris** · 28th July 2014, 07:56

Originally Posted by nodrog

wheres my motorbike cunt!

sold it and drunk the funds

**scracha** · 29th July 2014, 18:47

Have I had too many Steinies or didn't some enterprising kiwi racer do a home built inertial dyno?

**Grumph** · 29th July 2014, 19:19

Originally Posted by scracha

Have I had too many Steinies or didn't some enterprising kiwi racer do a home built inertial dyno?

More than one...and all read differently too. Do you want to be the arbitrator when someone produces a certificate from one dyno when it fails on another at the track ?

**quickbuck** · 29th July 2014, 21:41

Originally Posted by Grumph

More than one...and all read differently too. Do you want to be the arbitrator when someone produces a certificate from one dyno when it fails on another at the track ?

Now, that could be an issue.....
I guess the key is to have a pessimistic Dyno. That way the "Base Line" for your bike will be well under what the Brochure said when it was new...
Also it will read under what ever any other dyno in the country says.

Obviously there will be one dyno in use all season....

Point is, as I see it this is meant to be a fun class, why would anybody bother spending heaps of money on a hot engine?
Not like you are going to get a ride in WSBK from this class......
I would say one could put more effort and money into riding better before they start stuffing around with getting 120Hp (to cheat) from a 22 year old motorcycle for example.....