MJ Hard rev limiter
Turbo Mini Forums

Hi

I'm using the hard rev limiter board with my MJ v3, but it seems to have stopped working.

If I set it to 3000rpm to test, it revs straight past.

The advance goes to 0 so the soft limiter is activated. I've also checked the voltage from the MJ rev limiter output which drops from nearly 14v to 0v when triggered. The voltage to the coil only drops around 0.5v when on the limiter. I know that it shouldn't cut the voltage altogether, but was expecting it to drop more than this.

I initially thought that I had a wiring problem, but it all seems ok.

Any ideas?

In the 13's at last!.. Just

No? Lol

In the 13's at last!.. Just

Hmmm,

I've jsut dug up the circuit for the hardcut limiter,

essentially what you have is an 18 Ohm resistor in series with the coil when the hard cut is active, and when the har cut is nt active the FDS681Z shorts the resistors out so the coil see's full voltage,

by my calculations, the voltage should practically drop to zero.

http://www.google.co.uk/imgres?imgurl=http...iw=1024&bih=634

http://uk.rs-online.com/web/search/searchB...fds6681&x=0&y=0

That's the one.

Do you reckon it's fried?

It's only £20ish for a new one.

In the 13's at last!.. Just

is it easy to get the board out? If so i can test it, and fix it.

Well easy, it just slides into the MJ case.

Mines all wired externally too, so it just unplugs :)

In the 13's at last!.. Just

do mine while your at it mate

i'll give you some beer!

Drop it over to my parents. My mum won't mind doing it for you. :)

In the 13's at last!.. Just

She is lovely... and great at soldering.

In the 13's at last!.. Just

Where do you think his siter got her looks!

Edited by Joe C on 16th Apr, 2011.

Can we have a Members MILFs section?

Oh no!!!

No wonder Joes been so keen to help me out, he's after my mum!

In the 13's at last!.. Just

Rumbled!!! lol

I demand pictures