What pipes do you run on your 421 Serval?

[hoppedupandcutdown]

Would like mine to come on the powerband sooner. Anything to try other than pipes?

I've got OG Rockets, I would guess they are more of a big bore pipe, but don't know for sure.

Just watched a Troy KS hill climb video, I'd have to run that in first gear, from that short of a start.

[rjdgriff]

I really think you will be fine in 2nd gear with 15/41 gearing. I ran the hill last year in 2nd with 15/41 gearing and had no issues with staying on the pipe and that first hill is not really much different than before. Is your override tranny at a stock gear ratio?

[hoppedupandcutdown]

All but positive a stock gear inside, I dropped to a front 14 and still had problems at the dunes. REALLY had to keep the RPM's way up to get on the pipe to climb a hill in second. Just saying, from a slow start at the bottom and shifting to second, it would lug to the top and not hit the powerband.

[locogato11283]

Would like mine to come on the powerband sooner. Anything to try other than pipes?

I've got OG Rockets, I would guess they are more of a big bore pipe, but don't know for sure.

Just watched a Troy KS hill climb video, I'd have to run that in first gear, from that short of a start.

 

OG Rockets are a small bore pipe.

 

I doubt you find a pipe that comes on sooner than those that will still let the motor rev.

 

RJD's bike is a good runner.

 

All you need to do is some gearing swapping and you're set.

 

Ideally, you want to start in 2nd. You can't compare the dunes and paddles. They put more of a load on the motor than the dirt will.

[hoppedupandcutdown]

Thanks for the input.

I'm sure I won't have trouble lighting up some 20" dirt tires.

It just acts so much different in the dunes than my "bolt-on" bike, and I run 10 paddle extremes on it

[dave5.0]

Do you weigh 400#? You've got a 421 serval and it wouldn't lug up a hill in 2nd? Do ya have other issues? Seems kinda doggy. Maybe not.

[locogato11283]

FLYWHEEL!!!

 

Ditch that lightened flywheel!

 

You want the rotational mass of a stock weight flywheel.

[coryv4]

FLYWHEEL!!!

 

Ditch that lightened flywheel!

 

You want the rotational mass of a stock weight flywheel.

X2

[hoppedupandcutdown]

Yeah, not a fan of the lightened flywheel, but crap, everyone on here has been asking for a good flywheel in the last couple of months.

I just checked Ebay, obviously, my idea of "excellent condition" is very different from theirs.

[RadarRacing]

Most any gas cub thats rich at all will be a doggy turd. I dont know how rich or lean yours is. I hate riding them if they are a few jets off or the needle is 2 clips rich. They will just suck. At 160 with CEL needles in the middle could it be rich at all?

[locogato11283]

Those jetting specs are nearly identical to RJD's bike. I rode his today and it was running very well.

 

Furthermore, your set ups are identical except for the flywheel.

 

I'd put money on the flywheel being your issue.

[rjdgriff]

I also have been running 22" ambush tires at the hill climbs and launching in 2nd. 160 main jet I think a 48 pilot in it and mid clip on the needle right now and it's running spot on. Dennis you should bring your bike over to my place this weekend and we can compare and play with them and have us a good ol' time

[bangsheelover]

 over to my place this weekend and we can play with them and have us a good ol' time

 

[rjdgriff]

Don't be jealous bangshee

[hoppedupandcutdown]

And the new record to blow through BHQ with 25 useless posts to get to use the shoutbox , goes to...BangsHeelOver !