Rae-San Electronics

Modern Electronics for Vintage Motorcycles

CB DOHC developement

Posted by on Nov 21, 2015

CB DOHC developement

Ok – there’s a visitor in the shed –
Its here for fitting of the prototype and then some testing –

OLYMPUS DIGITAL CAMERA

OLYMPUS DIGITAL CAMERA

OLYMPUS DIGITAL CAMERA

 

 

 

 

 

 

Update

More work with the CB DOHC – Have added a couple of features to the code now that will roll into the CX TAI and the VF.

  • Tighter Dwell control through a new dwell calculation
  • Dwell Limiting – once maximum dwell is reached – the coil is fired – this is important for the CB as it has a habit of stopping between the start and stop triggers – leaving the dwell on. So this feature avoids the current drain and protects the coils – most other bikes (V formats) have lumpier cams and dont tend to stop here.

So the new code is running on the DOHC – awaiting recoating of the board and road test.
IT has been ported over to the CX, and the VF – the VF is running just needs a road test.

I also have a port to the legacy CX TAI done but not engine tested.

not too bad for this week.

Ray-San

Sucessfull first 20km ride through some twisties on the CB750 dohc chopper

Tested the new code on the v45s (stormtrooper) today to work and back – no detected issues – runs as before but with the new features built in – all good so far.