[rusEfi] Two stroke Efi (#14)

What engine are you torturing? Is it inside some car?
Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Two stroke Efi (#14)

Post by Number-One » Sun Jan 05, 2014 8:35 pm

Hello.
This is my project. I´m converting a 50cc sachs engine to 100cc Efi.

Original engine is like that
Image

my itb
Image

fuel pump

Image

my engine converted to liquid cooled

Image

https://svn.code.sf.net/p/rusefi/code/t ... /sachs.cpp

User avatar
russian
Site Admin
Posts: 9520
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Soldering skill: yes
Coding skill?: yes
Contact:

Re: Two stroke Efi

Post by russian » Sun Jan 05, 2014 9:18 pm

The VR board you have asked about is http://www.jbperf.com/dual_VR/v2_1.html

Update:

https://rusefi.com/s/howtocontribute
very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
my skype is arro239

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Sun Jan 05, 2014 9:21 pm

Thank you.

User avatar
kb1gtt
contributor
contributor
Posts: 3407
Joined: Tue Sep 10, 2013 1:42 am
Location: ME of USA
Contact:

Re: Two stroke Efi

Post by kb1gtt » Mon Jan 06, 2014 12:24 am

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.
Welcome to the friendlier side of internet crazy :)

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Mon Jan 06, 2014 7:00 pm

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.

User avatar
kb1gtt
contributor
contributor
Posts: 3407
Joined: Tue Sep 10, 2013 1:42 am
Location: ME of USA
Contact:

Re: Two stroke Efi

Post by kb1gtt » Tue Jan 07, 2014 12:34 am

Your probably going to need an external regulator, it doesn't look like that's got a regulator. They seem to sell such items here http://www.ecotrons.com/products/small_ ... ction_kit/
Welcome to the friendlier side of internet crazy :)

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Tue Jan 07, 2014 10:27 pm

No, this pump already have a internal regulator.

skeeters_keeper
Posts: 44
Joined: Fri Nov 08, 2013 3:18 am

Re: Two stroke Efi

Post by skeeters_keeper » Tue Jan 07, 2014 11:43 pm

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"?

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Wed Jan 08, 2014 8:06 pm

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. :lol:

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Wed Jan 08, 2014 8:43 pm

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.

User avatar
russian
Site Admin
Posts: 9520
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Soldering skill: yes
Coding skill?: yes
Contact:

Re: Two stroke Efi

Post by russian » Sat Jan 11, 2014 2:23 am


Wow!
https://rusefi.com/s/howtocontribute
very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
my skype is arro239

User avatar
kb1gtt
contributor
contributor
Posts: 3407
Joined: Tue Sep 10, 2013 1:42 am
Location: ME of USA
Contact:

Re: Two stroke Efi

Post by kb1gtt » Sat Jan 11, 2014 11:23 am

Nice, looks like it was fun, and very clean. I like the gauge display.
Welcome to the friendlier side of internet crazy :)

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Sat Jan 11, 2014 6:27 pm

This white is one of my bikes. This is a Casal, made in Portugal.

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Sun Apr 13, 2014 6:23 pm

Let´s start close the engine.
New handmade crank stroke 46 (original is 44)
Image

New gearbox , on the left is the original , on the right is the new one (sachs 125),same as Penton, Dkw, Hercules etc

Image

New cilinder, original vs new watercooled (44mm bore vs 54)

Image

News soon
Last edited by Number-One on Sun Nov 02, 2014 9:25 pm, edited 1 time in total.

User avatar
rus084
contributor
contributor
Posts: 678
Joined: Sun Dec 01, 2013 1:40 pm
Location: Russia , Stavropol
Soldering skill: yes
Coding skill?: yes
Contact:

Re: Two stroke Efi

Post by rus084 » Sun Apr 13, 2014 6:48 pm

this engine look like GY6 ?

what about your hardware?
what is fuel injector you will use?

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Sun Apr 13, 2014 7:47 pm

No, gy6 is a 4 stroke, my engine is a old 2 stroke sachs.
I will use this itb (Honda cbf 125)

Image

fuel pump
Image
Last edited by Number-One on Sun Nov 02, 2014 9:27 pm, edited 1 time in total.

User avatar
rus084
contributor
contributor
Posts: 678
Joined: Sun Dec 01, 2013 1:40 pm
Location: Russia , Stavropol
Soldering skill: yes
Coding skill?: yes
Contact:

Re: Two stroke Efi

Post by rus084 » Mon Apr 14, 2014 11:06 am

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?

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Mon Apr 14, 2014 9:32 pm

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.

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Wed Apr 30, 2014 9:44 pm

Ready to fit the engine

Image
Last edited by Number-One on Sun Nov 02, 2014 9:28 pm, edited 1 time in total.

User avatar
russian
Site Admin
Posts: 9520
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Soldering skill: yes
Coding skill?: yes
Contact:

Re: Two stroke Efi

Post by russian » Wed Apr 30, 2014 10:27 pm

My wife was passing by, she saw the pic and sad: "No way you are getting a bike" :)
https://rusefi.com/s/howtocontribute
very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
my skype is arro239

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Wed Apr 30, 2014 10:36 pm

Hope she said " oh beautiful bike ".

User avatar
russian
Site Admin
Posts: 9520
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Soldering skill: yes
Coding skill?: yes
Contact:

Re: Two stroke Efi

Post by russian » Wed Apr 30, 2014 10:50 pm

more like "oh beautiful COLOR, but don't you dare think about a bike"
https://rusefi.com/s/howtocontribute
very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
my skype is arro239

User avatar
kb1gtt
contributor
contributor
Posts: 3407
Joined: Tue Sep 10, 2013 1:42 am
Location: ME of USA
Contact:

Re: Two stroke Efi

Post by kb1gtt » Wed Apr 30, 2014 11:13 pm

Very nice very nice. You make me want to start the work on my Jawa.
Welcome to the friendlier side of internet crazy :)

User avatar
rus084
contributor
contributor
Posts: 678
Joined: Sun Dec 01, 2013 1:40 pm
Location: Russia , Stavropol
Soldering skill: yes
Coding skill?: yes
Contact:

Re: Two stroke Efi

Post by rus084 » Thu May 01, 2014 6:56 am

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 )

puff
contributor
contributor
Posts: 2719
Joined: Mon Nov 11, 2013 11:28 am
Location: Moskau

Re: Two stroke Efi

Post by puff » Thu May 01, 2014 7:31 am

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?

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Tue Jun 24, 2014 8:13 pm

In progress

Engine
Image

rusefi
Image
Last edited by Number-One on Sun Nov 02, 2014 9:23 pm, edited 1 time in total.

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Sun Nov 02, 2014 9:21 pm

Trigger wheel and sensor.

Image

User avatar
russian
Site Admin
Posts: 9520
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Soldering skill: yes
Coding skill?: yes
Contact:

Re: Two stroke Efi

Post by russian » Sun Nov 02, 2014 11:03 pm

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 :)
https://rusefi.com/s/howtocontribute
very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
my skype is arro239

Number-One
contributor
contributor
Posts: 99
Joined: Sun Jan 05, 2014 2:59 pm
Soldering skill: yes
Coding skill?: yes

Re: Two stroke Efi

Post by Number-One » Sun Nov 02, 2014 11:19 pm

My Frank board isn't ready to test.

User avatar
russian
Site Admin
Posts: 9520
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Soldering skill: yes
Coding skill?: yes
Contact:

Re: Two stroke Efi

Post by russian » Mon Nov 03, 2014 12:03 am

Number-One wrote:My Frank board isn't ready to test.
You only need ~15 components to test VR input
https://rusefi.com/s/howtocontribute
very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
my skype is arro239

Post Reply