De-Restriction Method #2 - Derestrictor/Resistor Mod
Posted: Mon Aug 17, 2009 1:46 pm
As you will have seen in the previous thread, one of the ways of derestricting is to pick out the little tab. The 2nd way to derestrict the bike is to use a derestrictor box. A number of versions of these are about if you can locate them. Manfucturers include:
-Posh Firm
-M-Max
I dont know of any other companies that produce them, if you do please list them. I do believe that Bats Motorcycles in Biggin Hill sell these at a cost of £100.
As explained in method #1, the CDI is in contant communication with the clocks so that it knows when you hit 110mph (180kmh) by using a tab that breaks a photo transistor, and telling the CDI you have hit that speed and not allowing the engine to rev any higher; giving you more speed. It does this by allowing a small current to flow below 110 mph but when the tab breaks the photo transistor this reduces (or increases i forget which) the current telling the CDI there is a change. We also saw that disconnecting the clocks causes the CDi to jump into a default mode with a restriction of 10krpm.
Now, the clocks can be by-passed completely by the use of a De-Restrictor box. What this does is fool the CDI into thinking that the clocks are still connected to it as well as allowing you to go beyong a speed of 110mph.
As discussed earlier the change in current when the tab breaks a photo transistor is what tells the CDI to start restricting the engine speed. this can be achieved not only with a derestrictor box (if you want to pay out for one) but also a resistor (which is all the derestrictor bax actaully is). the follwing thread show how this can be achieved.
viewtopic.php?f=1&t=7393&st=0&sk=t&sd=a ... r&start=15
-Posh Firm
-M-Max
I dont know of any other companies that produce them, if you do please list them. I do believe that Bats Motorcycles in Biggin Hill sell these at a cost of £100.
As explained in method #1, the CDI is in contant communication with the clocks so that it knows when you hit 110mph (180kmh) by using a tab that breaks a photo transistor, and telling the CDI you have hit that speed and not allowing the engine to rev any higher; giving you more speed. It does this by allowing a small current to flow below 110 mph but when the tab breaks the photo transistor this reduces (or increases i forget which) the current telling the CDI there is a change. We also saw that disconnecting the clocks causes the CDi to jump into a default mode with a restriction of 10krpm.
Now, the clocks can be by-passed completely by the use of a De-Restrictor box. What this does is fool the CDI into thinking that the clocks are still connected to it as well as allowing you to go beyong a speed of 110mph.
As discussed earlier the change in current when the tab breaks a photo transistor is what tells the CDI to start restricting the engine speed. this can be achieved not only with a derestrictor box (if you want to pay out for one) but also a resistor (which is all the derestrictor bax actaully is). the follwing thread show how this can be achieved.
viewtopic.php?f=1&t=7393&st=0&sk=t&sd=a ... r&start=15