Zeda comparison?

[Marley4@0]

Ok. Which motor is better. Plain Jane Zeda 100. Or Zeda DIO 100 with window piston? I'm asking cuz I dont want to waste my hard earned American money. Pros and cons of both? Thanks in advance.

 

[DAMIEN1307]

Ok. Which motor is better. Plain Jane Zeda 100. Or Zeda DIO 100 with window piston? I'm asking cuz I dont want to waste my hard earned American money. Pros and cons of both? Thanks in advance.

The Dio is known to leak no matter how many times you shave and reseal it. They are also prone to stud rip outs

Agreed...Get either the 100 or the 80...i am more than pleased with my Zeda 80...properly tuned stock motor, ive had it up to 47 MPH...DAMIEN

 

[Marley4@0]

Agreed...Get either the 100 or the 80...i am more than pleased with my Zeda 80...properly tuned stock motor, ive had it up to 47 MPH...DAMIEN

I like the pull of 100 tho.

 

[DAMIEN1307]

I like the pull of 100 tho.

Have a read of what i just finished doing 15 minutes ago with my Zeda 80 marley...lol.

New Bofeng carb

So after adjusting the needle do you see any need to down jet? NO...The "C" clip on the Bofeng was at the very bottom of the needle when it arrived which is full "rich"...I merely adjusted the clip to the very top for full lean because of my altitude as i previously said in my previous post...

motoredbikes.com

 

[Marley4@0]

Have a read of what i just finished doing 15 minutes ago with my Zeda 80 marley...lol.

New Bofeng carb

So after adjusting the needle do you see any need to down jet? NO...The "C" clip on the Bofeng was at the very bottom of the needle when it arrived which is full "rich"...I merely adjusted the clip to the very top for full lean because of my altitude as i previously said in my previous post...

motoredbikes.com

Question. What's the benefits of a windowed piston?

 

[DAMIEN1307]

Question. What's the benefits of a windowed piston?

Im not the guy to ask on that since i specialise with getting the most out of stock setups myself...folks like @Street Ryderz, @GreasyChris, @Wrench, @CrazyDan, @Karl Snarl, are the guys to ask about anything to do with modifications like that...Thats where those guys really shine...DAMIEN

 

[Street Ryderz]

Question. What's the benefits of a windowed piston?

A windowed piston is for the use of reeds and allows for more intake duration. more intake duration is needed with the use of the reeds because they rely on the case pressure changes to open and close them, the case pressure builds with piston movement and the piston has to move more and make a bit more pressure to do this with the reeds.

 

[Wrench]

Im not the guy to ask on that since i specialise with getting the most out of stock setups myself...folks like @Street Ryderz, @GreasyChris, @Wrench, @CrazyDan, @Karl Snarl, are the guys to ask about anything to do with modifications like that...Thats where those guys really shine...DAMIEN

Thanks for the confidence I'm honored that you would think of me, but... I'm all 4 stroke Whizzer M/B. I never built a CG 2 stroke,
As far as I know Crazy Dan is all 4 stroke HS with a shift kit.

 

[Karl Snarl]

Question. What's the benefits of a windowed piston?

With a reed you can cram more fuel and air in the cylinder, when set up right, vs a piston port. More power, snappier throttle, etc, when you run a reed and windowed piston.

 

[Street Ryderz]

And for clarity that is with or without intake reeds.
If you have a windowed piston, reeds are required for it to run at all; but a windowed piston is not required to make intake reeds zing like a carpenter bee in a megaphone... it's all about the porting

Sorry but that makes no sense, a piston port and a intake reed then a case reed all have different timings and different characteristics. Many of the reeds available for the bicycle engines are garbage, they are too big requiring stuffers to make them work better, are not matched to the port or the volume so the only real gains are in the bottom end throttle response. A case reed is different again as it truly takes advantage of the 172 degrees duration (about 164 in reality) but compared to 110-120 of a piston port and 140 ish of an intake reed still an improvement if the rest of the ports are timed correctly to match that.