I'm having an issue getting enough power to get up some bigger obstacles. I can lift the wheel to the obstacle but then struggle to twist the throttle enough to get a big burst to launch up. Lifting the wheel 3 feet or so causes the bike to rotate up which requires the wrist to rotate down just to maintain the same throttle opening. I think that is what makes it hard to get that second bigger burst. Is there something I'm missing? Do I need to "over grip" the throttle prior to big obstacles to allow some more twist?

The bike is a Sherco 2.9 so does have adequate power. I have retarded the timing and run the slow throttle because the softer response helps in every other situation. I have seen others do much more on a 125 so I'm sure this is an operator problem. Any ideas?

I do think the slow throttle does have some disadvantage when you need a big handfull of throttle, and Now!

Each rider is different, and has to set things to taste. Yes, you can take a bit more agressive position and grab more throttle. Your clutch applies the power, so you can cut it at any time!.

A number of years ago, I took an ali throttle tube and modded the cable ramp so it started off as a slow throttle, yet still kicked in well when you needed it. There is a company that makes and sells these now, cannot recall the name, but they are sweet looking.

FWIW, I have just come to runing the fast tube on a slower bike(timing back a bit), but mostly I got better at using the clutch over time so less of an issue. All said, I still like a 2.5, yet do not have one, just adjust.

It occurs that you may not have quick action legs.....something I 've had to grow used to as the years roll on!.............just watch those kids on pushbikes.

Have you tried having the standard throttle on? My friend uses it on his 2.9 seems to work for him.

The company that makes slow start throttles in UK is XBLOK and the throttle body is an XPro ATC. They make different 'speeds.'

Thanks - I'll check out those throttle tubes.

Chewy - Do you have any advice on growing those quick action legs. They are definitely part of the equation.

Unfortunately, I also lack a quick action brain. Do any shops in the UK carry brain upgrade kits?