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Author Topic: Cycle World Two Stroke article  (Read 15922 times)

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Offline Stusmoke

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Cycle World Two Stroke article
« Reply #15 on: September 06, 2012, 09:22:31 AM »
Quote from: VintageBlueSmoke on September 05, 2012, 08:14:00 PM
(US Military bases are ove $4 per gallon, the locl economy is over 1.60 euro per liter!).

Fuel efficiency is the mantra today, not performance.

Thats about $2 AUD. Geezus thats madness. put 50 litres in your ute and thats 100 bucks thats rediculous. We pay about $1.5 AUD a litre here for 92 octane swill.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline Coop

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« Reply #16 on: September 07, 2012, 01:43:22 PM »
Lots of two strokes in magazines lately. You guys that ride off-road should check out Trail Rider. It is full of them.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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- Mike - Don't take life so seriously, nobody gets out alive.

Offline Uniflow

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Cycle World Two Stroke article
« Reply #17 on: September 09, 2012, 12:22:35 AM »
Why wait, do it yourselves, the technology is already out there. I use a Link Atom computer on my MX twostroke. Rear transfer port injection, by staging the injection, fuel wastage is reduced, more power, wider power spread. Enough oil deposit on the transfer runs down to the crankcase to service the bigend. It's been running for about eight months now. Yes there has been may issues.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline Jeram

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« Reply #18 on: September 09, 2012, 09:46:48 AM »
Such a build would take an average guy a year or so to complete and injected 2T

Would suck to be half way through the process of building one and husqvarna comes up with there DI 2T haha.

more info on your bike? is it the 500 weve been hearing about?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline Uniflow

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Cycle World Two Stroke article
« Reply #19 on: September 15, 2012, 05:08:36 AM »
The bike I have fuel injected is Kawasaki 350 Bighorn 1973. This only a test hack. A VMX bike.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline TMKIWI

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« Reply #20 on: September 15, 2012, 06:09:56 AM »
Uniflow. Are you going to Whakatane on the 6th Oct.?
I'll see you there if you are. ;D
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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If you don't fall off you are not going hard enough

Offline Uniflow

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« Reply #21 on: September 15, 2012, 06:15:46 AM »
Yes I'll be there. If I don't wreak it first.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline Uniflow

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« Reply #22 on: September 15, 2012, 06:25:02 AM »
Ignore the bike. The EFI that it run's on now is off the shelf components, Link EFI, car injectors, bosch fuel pump, Subaru relief valve.   You can see the injector nozzles in the in the back of the crankcase ( x2).
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline Uniflow

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« Reply #23 on: September 15, 2012, 06:27:37 AM »

You can see the injector bodies in the intake cavity behind the cylinder.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline Uniflow

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« Reply #24 on: September 15, 2012, 06:31:11 AM »

Flywheel side, one censor run's the ignition ( Ignitec ) and the other run's the EFI system using a 12 minus 1 trigger wheel.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline Uniflow

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« Reply #25 on: September 15, 2012, 06:38:04 AM »

This bike has a vairable rotary valve housing operated by the Ignitec ignition. From 55 degrees valve closing at low speed to 78 Degrees at full throttle.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline Uniflow

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« Reply #26 on: September 15, 2012, 06:42:11 AM »

Cylinder head.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline Uniflow

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« Reply #27 on: September 15, 2012, 07:18:36 AM »

Fueling changes. Link EFI has the ability to change the fueling as the head temp changes. With Ethanol the fuel requirement changes above 70 degrees C,  more fuel required. This can be changed on a graph that uses TPS and Temp. This information is overlaid the main fuel map. Very handy with an air cooled engine.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline Uniflow

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« Reply #28 on: September 15, 2012, 07:30:30 AM »
TMKIWI, what are you riding at Whakatane?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline TMKIWI

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« Reply #29 on: September 15, 2012, 10:38:53 AM »
'85 RM125.
The build is in the vintage section.
I havn't even riden it yet, just a couple of heat cycles in the shed.
Will get it out this week to run it in and jet it. Hopefully.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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If you don't fall off you are not going hard enough
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