Restrictors - Don't roll yours Eyes!!
Posted: Sun Apr 22, 2007 10:58 am
OK, I have taken on the restrictors in a Japanese import, as a bit of a challenge. So far it is good I have had some fun, and learned a lot about the bike. A bike shop said they can fix it but will not quote a price and the priorty was not high enough to commit 
$$$$
The restictor on this particlular bike limts the speed at 180k. Some may think that is quick enough, generally I do too, but there is a challenge to over come and the potential must be available even if it is not used.
I realise that many have been here before so please don't shoot me for asking the question....Ok
So far I have replaced the speedo with an Ozzie speedo that is not restricted. I took an ozzie instrument cluster apart and took the speedo unit out. Did the same with mine. I compared the two together to see what the differences are, in an attempt to find out the real oil about these things.
The Japanese part has a volume of electronics added to the speedo unit. On this unit it has a disk that turns with the speed indicator (needle). This disk has a large gap, so as it turns and the needle reaches 180 k a step in the disk comes in line with two electrodes (They look like Carbon blocks similar to brushes from an electric motor). Being the smart ass I am, I figure if the speedo didn't have the disc, but retained the electronics, the system would think the bike never went as fast as 180k
Now the story. Ok, ozzie speedo, Japanese electronics retained. After two weeks of waiting I took the bike for a hiding yesterday. Although the distances and frequency was not that great, but the bloody thing is still restricted... I think. The problem is it seems to go flat, probably start missing at about 6750 rpm.
Have I envoked another rev limiter, or is there a posibility there are fueling problems
The bike has and does have a fueling problem when riding really hard. When throttling back on, after a throttle off at high speeds, and after a length of time with full throttle "selected" it will bork as if it is running out of fuel.
So I could have 2 problems
Does anyone have intimate knowledge of this speed limiter, that may be willing to part with some info and save me some more demolishing and still guessing if I have Fuel problems??
Any help appreciated.
Sarg
$$$$The restictor on this particlular bike limts the speed at 180k. Some may think that is quick enough, generally I do too, but there is a challenge to over come and the potential must be available even if it is not used.
I realise that many have been here before so please don't shoot me for asking the question....Ok
So far I have replaced the speedo with an Ozzie speedo that is not restricted. I took an ozzie instrument cluster apart and took the speedo unit out. Did the same with mine. I compared the two together to see what the differences are, in an attempt to find out the real oil about these things.
The Japanese part has a volume of electronics added to the speedo unit. On this unit it has a disk that turns with the speed indicator (needle). This disk has a large gap, so as it turns and the needle reaches 180 k a step in the disk comes in line with two electrodes (They look like Carbon blocks similar to brushes from an electric motor). Being the smart ass I am, I figure if the speedo didn't have the disc, but retained the electronics, the system would think the bike never went as fast as 180k
Now the story. Ok, ozzie speedo, Japanese electronics retained. After two weeks of waiting I took the bike for a hiding yesterday. Although the distances and frequency was not that great, but the bloody thing is still restricted... I think. The problem is it seems to go flat, probably start missing at about 6750 rpm.
Have I envoked another rev limiter, or is there a posibility there are fueling problems
The bike has and does have a fueling problem when riding really hard. When throttling back on, after a throttle off at high speeds, and after a length of time with full throttle "selected"
it will bork as if it is running out of fuel.So I could have 2 problems
Does anyone have intimate knowledge of this speed limiter, that may be willing to part with some info
and save me some more demolishing and still guessing if I have Fuel problems??Any help appreciated.
Sarg
Am watching!!!