5-6HP on chinadoll with a tuned pipe?

[Jayraye39]

Ok am I reading these new posts right. Can a china doll really make 5 to 6 hp with all the basic tunes. but utilizing a correctly tuned pipe?
I seen a member hydroformed his own. I have for awhile now noticed that my rpm wall and hp Is probly due to my expansion chamber design. although I wasnt expecting an ebay chamber to be high performace. If this is the case with adding that much HP im going to take the 3 diff chambers that i got cutt them up and make my own correctly tuned pipe from all the proper equation formulas.

 

[cloakedvillain]

Pipes are everything for a two stroke.

 

[GW's Motorized]

Yup, there are even dyno runs to prove it

 

[Jayraye39]

Yeah i know a good expansion pipe on a 2 stroke dirt bike can almost double the power output. But on our small motors I didnt know a pipe would increase it that much. I always thought the port positions on these jugs is what limited that much of an increase. Also with all the expansion chambers that fit our motors not a single one produced come even close to thoese numbers. So since this can be obtained im going to be making my own tuned pipe. Dont have equipment for hydroforming. Plus yall know me. Im going to use the things I already have. which is 2 crap chambers in the garage and the Nasty Jack on my blue racer. Hell now yall got me all excited.

 

[DAMIEN1307]

Can a china doll really make 5 to 6 hp with all the basic tunes.

A Phantom 85 is 5 to 6 HP stock, right out of the box, with the exhaust/muffler/pipe that they made especially for the P-85...I am more than pleased with performance with mine.

 

[Jayraye39]

A Phantom 85 is 5 to 6 HP stock, right out of the box, with the exhaust/muffler/pipe that they made especially for the P-85...I am more than pleased with performance with mine.

sorry i meant to say stock CG. I know the hybrids can fly. but if i can make a good pipe i technicaly should be keeping up with you 85rs

 

[DAMIEN1307]

sorry i meant to say stock CG. I know the hybrids can fly. but if i can make a good pipe i technicaly should be keeping up with you 85rs

Did you know that they also made a P-85 exhaust that fits the standard CGs too???

Phantom Style Performance 2-Stroke Exhaust Muffler For Zeda Bicycle Engines

Now available, the all new Phantom 85 replica performance exhaust pipe made for Zeda 80 cc & 100cc motorized bicycle engine kits, features sound insulation.

www.bicycle-engines.com

 

[Jayraye39]

yeah but it wouldnt produce 6hp for the standard CG. The parameters are two different I'm seriously excited for this pipe project it's going to take quite a while I'm sure first step is obtaining or building a degree wheel

 

[ImpulseRocket]

I would love to see the dyno of a Phantom with a proper 85cc dirt bike pipe on it. They basically smoke the stock clutch with ease.