superjet cdi modification

waxhead

wannabe backflipper
Location
gold coast
Does anyone have the picture of how to remove the limiter on the cdi
it was on pwctoday but it seemd to have been deleted
 

romack991

homebrewed
Location
Warsaw, IN
heres some pics of the one i did and the cheap drawing i made after the originals on pwc2day got wiped out.
 

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SuperJETT

So long and thanks for all the fish
Location
none
Here are the pics I have that show where to connect a jumper to disable the rev limiter.
 

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Last edited:

Mouthfulloflake

ISJWTA member #2
Location
NW Arkansas
now which set of pics shows the proper solder pads to attatch teh resistors to?

I see 2 36K ohm resistors, and whats the value of the pot?

the sets of pictures posted show different places to connect.

im confused now!
 

SuperJETT

So long and thanks for all the fish
Location
none
I should correct that, my set shows where to connect a jumper to disable the rev limiter, the other shots show how to make it adjustable. They are different solder points.
 

Mouthfulloflake

ISJWTA member #2
Location
NW Arkansas
gotcha.

thanks Darrin.

thats even simpler, and more what I need.

Ill do that to my spare CDIs, and not have to worry about my 7 year old enhancer going belly up.

Thanks dude!
 

keefer

T1
Location
Tennessee
When I make the mod I simply remove the 100k resistor & replace with a 50k resistor in series with a 50k linear taper trimpot. If the total resistance falls below 50k the the circuit will not work. The fixed resistor makes the rev limiter adjustable from the stock setting up to about 8500 rpm. This is the same mod that ProTec makes when you send it to them.
 

dawson

X
Location
down under
i did superjett's posted mod last night as shown in the far right picture and it works a treat.
gave the blaster a free rev and had to back off at 8500rpm :bigeyes:
will try to give the adjustable version a run in the next day or so.
 

All Stock

Keyboard Freestyler
Location
Houston
As you lower your total resistance via the pot, it raises the rev limiter, Correct?

And the resistance of the stock resistor is 100k ohm.

So if you were to replace the stock resistor with a 75k, it would raise the rev limiter enough without having to worry about installing a tach. Does any of this make since or am I totally off base?

Do you seal the CDI back up? If so how?

Thanks.
 

romack991

homebrewed
Location
Warsaw, IN
i have no idea on the stock circuit resistance, didnt measure, but just do either the no rev mod or the adjustable mod as stated and it'll work. as far as what resistance makes what rpm, you'd just have to play with it with a tach to find out what your gonna get. most just have it wide open and use their finger as the rev limiter...

silicone to seal it up.
 

cambo au

TRYING TO LEARN
Location
AUSTRALIA
do any of you know what sort of resisters they are ? and what pot it is?
i am going to have a go and want to make it ajustable
thanks chris
 

keefer

T1
Location
Tennessee
cambo au said:
do any of you know what sort of resisters they are ? and what pot it is?
i am going to have a go and want to make it ajustable
thanks chris

When I make the mod I simply remove the 100k resistor & replace with a 50k resistor in series with a 50k linear taper trimpot. If the total resistance falls below 50k the the circuit will not work. The fixed resistor makes the rev limiter adjustable from the stock setting up to about 8500 rpm.
 

hydrostyler

X-
Site Supporter
Location
Central Illinois
Does anyone see a problem with eliminating the rev-limiter, but also place a toggle switch inline with the jumper wire? I figured this will allow a limited worry free break in period and save your motor if you let a rookie ride it...
 
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