Trials Australia Forums

Whilst waiting on a ruling from MA can anyone say if Flatside Carburettors are legal for Post Classic use, as I read the GCR's they are not but perhaps some of you have been down this road before, your thoughts please, I am not too fussed about using one but may if they are legal,
Beech

Was the bike manufactured with fatbars?

Fatbars are not a Major component, rule 23.5.0.2, carbs are so as I said, the way I read it a flatside is not elegible. Just want to clarify it, not get in a bunfight.

Hey Mark
I'm guessing there is some performance benefit from a flat slide because I've seen some of the top Experts fitting them to modern bikes in lieu of the standard round-slide carby but haven't seen many in use in twinshock and personally don't care about the performance aspects.

I would only be concerned that if the external appearance of the flat slide carby looked too different to a round slide then it might detract from the visual appeal of a twinshock bike (which is something I like about twinshock bikes). I'll have to have a look at a few flat slide carbies to see what they look like.

BTW congratulations on winning the TROY series in Veterans. Mate you are a legend. Is anyone going to post photos of the riding from last weekend? I'd love to see that Majesty in action.

Regards
David

I have a 78 sherpa T 350. The previous owner fitted it with a flatslide and a reed block. Improves starting, idle, and smoothness ten fold. Also looks like a factory fit.
Crafty

David Lahey wrote:BTW congratulations on winning the TROY series in Veterans. Mate you are a legend. Is anyone going to post photos of the riding from last weekend? I'd love to see that Majesty in action.

Here's one I had lying around, sans seat and the be-yootiful gold Ohlins.... Beechy you'll have to take a recent one!

Beech wrote:Fatbars are not a Major component, rule 23.5.0.2, carbs are so as I said, the way I read it a flatside is not elegible. Just want to clarify it, not get in a bunfight.

Hi Beech,
I'm looking at the same type of carby for my TY. At first I was quite concerned about the legality of them but when I had a closer look at the rules I see it as being that the rule 23.5.0.2 applies to clasic bikes (pre 1965). The way I read it, (but I'm no expert and I may be wrong) it seems that there is pretty much no restriction on modifications to post classic as long as they were made in the correct period and have no disc brakes, and are twinshocks.

Have you actually asked MA for clarification, because I'd love to hear the actual answer.

Mark.

Yes I sent an email to MV who have forwarded it on to MA so should have an answer soon....... I hope.
Post Classic bikes do come under classic rules so the carb thing may apply as I see it, other riders say it doesn't and some say it does, it won't hurt to be sure.
Will post asap as I get the answer.

Responce from MA which to me indicates No Flatslides.

Carburettors are shown as a “major component” in Classic Trials, this includes Post Classic.
Therefore any competitor who wants to use a flat slide carburettor would have to be able to prove that:
1/ The carburettor was available in the time frame or period depicted.
2/ That the carburettor was used on Trials bikes during the period depicted.
3/ That the carburettor fits with the “spirit” of classic events.
It would be up to the competitor/machine owner to have substantial proof of this component being used, and to carry this information with them to competitions, to use if a protest is lodged against the major component.
Thanks,
Ross Martin
Motorcycling Australia.

Thanks Ross and Mark

I had wondered for ages if the "Major Component rule" in the Classic Trials bike section also applied to Post Classic trials bikes.

David