Nice. Looks like you are going liquid cooled as well. Do you know what pressure you get from that fuel pump? It looks much nicer than what I did for my small engine. Do you know what kind of current it draws? I'd bet it draws less than mine is drawing.
Re: Two stroke Efi
Posted: Mon Jan 06, 2014 7:00 pm
by Number-One
Hi, pressure i don´t know yeat. In normal utilization arround 300/400 ma. This is original from a Honda cbf125, i think cbr 125 uses similar pump but inside of the tank. Cbf 125 is outside of the tank.
Neat project! I like my air cooled motorcycle (Moto Guzzi Breva) for simplicity.
Some day I may try converting my carb'd '90 Kawasaki Ninja to EFI just because, but for now the carbs are doing a good job.
What is the motivation behind the changes? Or "just because"?
Re: Two stroke Efi
Posted: Wed Jan 08, 2014 8:06 pm
by Number-One
skeeters_keeper wrote:Neat project! I like my air cooled motorcycle (Moto Guzzi Breva) for simplicity.
Some day I may try converting my carb'd '90 Kawasaki Ninja to EFI just because, but for now the carbs are doing a good job.
What is the motivation behind the changes? Or "just because"?
Only for fun, and to do different. One old bike like a fresh bike.
Re: Two stroke Efi
Posted: Wed Jan 08, 2014 8:43 pm
by Number-One
kb1gtt wrote:Nice. Looks like you are going liquid cooled as well. Do you know what pressure you get from that fuel pump? It looks much nicer than what I did for my small engine. Do you know what kind of current it draws? I'd bet it draws less than mine is drawing.
Pressure 250kpa, found this today.
Re: Two stroke Efi
Posted: Sat Jan 11, 2014 2:23 am
by AndreyB
Wow!
Re: Two stroke Efi
Posted: Sat Jan 11, 2014 11:23 am
by kb1gtt
Nice, looks like it was fun, and very clean. I like the gauge display.
Re: Two stroke Efi
Posted: Sat Jan 11, 2014 6:27 pm
by Number-One
This white is one of my bikes. This is a Casal, made in Portugal.
Re: Two stroke Efi
Posted: Sun Apr 13, 2014 6:23 pm
by Number-One
Let´s start close the engine.
New handmade crank stroke 46 (original is 44)
New gearbox , on the left is the original , on the right is the new one (sachs 125),same as Penton, Dkw, Hercules etc
New cilinder, original vs new watercooled (44mm bore vs 54)
News soon
Re: Two stroke Efi
Posted: Sun Apr 13, 2014 6:48 pm
by rus084
this engine look like GY6 ?
what about your hardware?
what is fuel injector you will use?
Re: Two stroke Efi
Posted: Sun Apr 13, 2014 7:47 pm
by Number-One
No, gy6 is a 4 stroke, my engine is a old 2 stroke sachs.
I will use this itb (Honda cbf 125)
fuel pump
Re: Two stroke Efi
Posted: Mon Apr 14, 2014 11:06 am
by rus084
you engine was 67cc ?
now its 105cc
new cylinder looks much better, and the scavenging ports quite effective.
yes, quite unlike the cylinder GY6 1P40QMB
you'll make a new cylinder head?
Oxygen sensor to put you?
Re: Two stroke Efi
Posted: Mon Apr 14, 2014 9:32 pm
by Number-One
rus084 wrote:you engine was 67cc ?
now its 105cc
new cylinder looks much better, and the scavenging ports quite effective.
yes, quite unlike the cylinder GY6 1P40QMB
you'll make a new cylinder head?
Oxygen sensor to put you?
Original 50cc. I will use a yamaha cylinder head. Oxigen sensor i don´t have , i can´t use it once this engine is 2 stroke.
Re: Two stroke Efi
Posted: Wed Apr 30, 2014 9:44 pm
by Number-One
Ready to fit the engine
Re: Two stroke Efi
Posted: Wed Apr 30, 2014 10:27 pm
by AndreyB
My wife was passing by, she saw the pic and sad: "No way you are getting a bike"
Re: Two stroke Efi
Posted: Wed Apr 30, 2014 10:36 pm
by Number-One
Hope she said " oh beautiful bike ".
Re: Two stroke Efi
Posted: Wed Apr 30, 2014 10:50 pm
by AndreyB
more like "oh beautiful COLOR, but don't you dare think about a bike"
Re: Two stroke Efi
Posted: Wed Apr 30, 2014 11:13 pm
by kb1gtt
Very nice very nice. You make me want to start the work on my Jawa.
Re: Two stroke Efi
Posted: Thu May 01, 2014 6:56 am
by rus084
I have two stoke engine chainsaw "drujba" , but inginion is not working ( i have CDI rotor, but Mount does not fit else contact a woodruff key rotor broke )
Re: Two stroke Efi
Posted: Thu May 01, 2014 7:31 am
by puff
jawa! my dad had jawa somewhat 30-40 years ago. didn't know they exported it to the us. could you share some pics of it?
Re: Two stroke Efi
Posted: Tue Jun 24, 2014 8:13 pm
by Number-One
In progress
Engine
rusefi
Re: Two stroke Efi
Posted: Sun Nov 02, 2014 9:21 pm
by Number-One
Trigger wheel and sensor.
Re: Two stroke Efi
Posted: Sun Nov 02, 2014 11:03 pm
by AndreyB
Do you have VR circuitry ready? You should be able to spit it by hand and see some LED flashing - if you have an LED
Re: Two stroke Efi
Posted: Sun Nov 02, 2014 11:19 pm
by Number-One
My Frank board isn't ready to test.
Re: Two stroke Efi
Posted: Mon Nov 03, 2014 12:03 am
by AndreyB
Number-One wrote:My Frank board isn't ready to test.
