Power consumption, E-ignition vs Points. also - spare advance cam?

[Mikep328]

Has anyone performed a test to see the difference in power consumption between running the OEM points system vs a DSS E-ignition (which is on my 400)?  I'm curious about that, suspecting that points would require less power.   

In the spirit of tinkering, on that subject I am looking for an OEM (points) ignition advance cam - JUST the cam that fits on the advance unit.  Anybody in the UK have a spare they would sell me?  DSS has the entire advance unit but I don't want to spend £58+ for that when I only need the cam.  I have all the rest of the OEM system, but I guess when a previous owner installed the e-ignition, he/she tossed the cam or forgot to put it in the little bag with the breaker plate that stayed with the bike.

[McCabe-Thiele (Ted)]

You might need to check the brand of advancer as the part will be probably be different - there are two iirc one is tec the other is ND I think.

[Mikep328]

OK, didn't realize there were two different advance units.  Thanks.

[Multiman]

Give Steve a shout, he may be able to help.
https://www.400fourbits.co.uk/#electrical

[Mikep328]

 Thanks re Steve!   

 No joy!

I suspect I'd have to buy the new unit from DSS if I want to tinker with points.  But I don't have £58 worth of tinkering in mind for this...

[McCabe-Thiele (Ted)]

I've sent a PM I might be able to help.

Assuming that Honda paired  the same brand of spark advancer with the ignition plate I have a Tec one that is from my 400.
If you check the diameter of the shaft the one I have is as follows.

Length/Height inc: flanged part 29.65 mm approx, Inside diameter at flanged section (inner face) 15.2 mm, main inside diameter of shaft 15.0-14.95 mm approx.
The ND one is substantially larger or smaller i/d I forget what way round it is
.
All measurements approx only taken with my calipers.

[Trigger]

For a CB400, it has 333 number on it

[Mikep328]

Thanks guys, I'll check it later this afternoon if I get to the garage.  If not, tomorrow when I get back from having a new set of K82's mounted.

[Mikep328]

Update:  I ended up going back to the USA before continuing with this "project."  While there I came across a complete points plate/advance unit in a garage sale for 10 USD!  I checked the condensers  with a real capacitor tester (not a multimeter) and they show good as far as capacitance and voltage.  Points are original ND and look essentially unused.

Now I'm back in the UK eyeing these parts wondering whether I REALLY want to install the OEM system or just leave the perfectly functioning DSS EI in place.  Logic/common sense would dictate leaving the EI; but I have this NON-common sense urge to have the points in there...

I haven't awakened the 400 yet from it's winter slumber - been too cold/wet for me but hope to do that sometime this week.  It's probably not often that someone has a perfectly running machine and intentionally changes something that may make it less so and I can't think of any operational advantage that the points would provide!   Yes, they will provide a spark with less voltage than EI but I haven't seen any case with my 400 where low voltage is an issue.     So more thinking...