Flat slide carbs?

[Eka]

Has anybody tried Mikuni flat slide carbs, I mean instead of old and maybe worn out Amal etc.?

[BOGWHEEL]

i have a lectron powerjet on my M199 - i think it aids in throttle response!!!
i am going back to a stock bing as the lectron is old and worn
i am interested to find any difference
some sherpa owners are using keihin crabs from rgv suzuki -

[backyardy]

I was going to buy a mikuni but I found and bought this flatslide from TRIALTECH in Brisbane and I'm stoked.

All I had to do was shorten the inner cable length slightly. Runs pretty sweet out of the box but there are some spare jets so I may fiddle...

[Tee-Why]

Is anyone running or know of someone using the OKO versions?
Feedback please?

I am trying to get my head around why the bore difference in equivalent round slide to flat is not considered equal.

To quote another web page info on this:
"The significant attribute of the carb is not really the diameter of the throat (the narrowest section), but rather the area of the throat, which is proportional to the diameter squared. The important thing to note is that with a squared relationship, it doesn't take much of an increase to affect a large improvement."

Is the performance gain smoothness using a Flatslide outweigh the originality aspect?
Its more a visable mod, but no different in principle to converting to CDI. (just see how much pre-65 has deviated from period!!!!)
Your thoughts?

[paul neilson]

I ordered a Mikuni for a model 158 Bultaco from Hugh Weaver in the US and he sent me a 26mm Flatslide. It seems to be jetted perfectly at all revs and is really responsive. Its made the bike heaps better to ride.

[lukesta888]

Is using a new updated carbie allowed under the rules of twinshock and classic ?

[Beech]

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:

The carburettor was available in the time frame or period depicted.
That the carburettor was used on Trials bikes during the period depicted.
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.

[scrivo]

Given that flat slides do not really satisfy the rules or spirit of twin shock bikes can a device clled a slide puck be used? This device is installed within the slide of a conventional mikuni carb and effectively makes the slide a smooth device by filling in the area betwwen the cut out at the rear and the straight leading edge of the slide. This offers most of the advantages of a flat slide such as vastly reduces turbulance at low throttle openings and very accurate fuel/air metering at part throttle openings.

[OKOAustralia]

We have resolved this with the OKO 3000 . Testing showed this sweet little gem of a carb to be almost as good as the equivalent flatslide (3020). Only disadvantage is weight.

http://www.oko-australia.com.au