Topic: 750 Missing under load

[754]

I have seen more dyna failure threads than condenser threads ..
I would be back running, just dealing with family stuff right now
 I can fix mine for under ten bucks..what can you fix on a dyna..? When you are out on the road.
 I have never had a credit card, nor usually enough cash to sit in a room waiting for parts..
So I just pack a spare points plate.
 I may have had a condenser failure in the 70,s or eighties, but nothing since then...
But hey, by all means run the ignition of your choice.

[jonda500]

My low budget made me choose daichi points and condensers for two of my bikes back in 2012 and I haven't had a single problem with them yet...   for only 15 bucks for the whole points plate complete with points and condensers, I thought it was worth the gamble. Actually they are one of the only aftermarket parts I have ever been happy with! I did buy a genuine tune up kit for my first 500 (points/condenser plate & plugs), but at over $100 + shipping  that purchase really stung! 
John

[Terry in Australia]

The only time I've seen an ignition failure in a CB750 was when my mate Pete's bike suddenly started running on two cylinders on our way back from Bathurst (Australian Motorcycle TT) in 1983. It turned out that one of his points breaker arms had broken in half! Luckily for him I'd just installed a Martek 440 in my bike, and at Pete's suggestion I was carrying my old points plate in my bag, so we removed his faulty item, replaced it with mine, and we were good to go again. 

I've used Dyna's mostly in CB750's without an issue for the past 30 years or so Frank, but Hondaman's electronic ignition amplifier works great, as does the Pamco. I can understand that if you can't afford one you're pretty much restricted to using the OEM item, as poor as it is, and if you've never used an electronic ignition, then you just don't know any better. No problem, use what you can afford. Cheers, Terry.

[Pan1cReaper]

I jist had 3 Daichi condensers fail on me in the last month, on either side of the points so I dont think its anything else causing it. Everything ohms out ok, coils, grounds, getting good power everywhere. Runs smooth when they work, just all the sudden they started to act up then after about 10 minutes of on/off they just flat out die. Seems like one will be ok until it starts getting warm, the other 2 just flat out dont work. I appreciate points for what they are, but I've had it with the condenser headache for now. Is there something I dont know about that could be causing them to fail?

[scottly]

Daichi condensers are as flakey as Daichi points ; use TEC or Denso brands.
I've only had one outright condenser failure, and that was on a V-8 car that suddenly stopped running, as if the key had been switched off. I was stranded at the side of I-5 for hours before I figured it out.
I've never had any luck with point files; ignition points are made from something very hard, like tungsten, and files don't cut into it very well. I've had much better results polishing points on an oil stone.   

[Pan1cReaper]

Daichi condensers are as flakey as Daichi points ;

So I've read! Once I had the second set go out, I started reading. Of course the vendor says Daichi are the highest quality they offer. That no one really ever has problems. Thats not what I read on the forums, however.

[seanbarney41]

Daichi condensers are as flakey as Daichi points ;

So I've read! Once I had the second set go out, I started reading. Of course the vendor says Daichi are the highest quality they offer. That no one really ever has problems. Thats not what I read on the forums, however.

I have had 40 year old oem condensors work perfectly...I am, in fact, running them on one bike right now.  Brand new daichi?...fail regularly.  Last pair I had failed in 120 miles.  Stuck the old tec condensers back in there and they have been fine for 10000 miles.  Dyna s works good on my kz650, but I have not noticed any real running/performance improvement on my sohc4.  I got hondaman igy on my cafe bike and its great but only a couple thousand miles so far.

[BobbyR]

Points have run their course as an ignition technology. There are a very small number of vehicles still on the road using them. Therefore no manufacture will invest a nickel in improving them or changing their manufacturing. What is out there now is probably some #$%* made in a garage in Vietnam.

Years ago when points were all we had, there were knockoff DELCO parts peddled to service stations. They were cheap and the boxes looked the same.  We all started getting cars dying in the middle of the street. They had paraffin in the case which would melt and cause a failure.   

[PeWe]

There is a thread about using a modern capacitor. 0.24uF if I remember correctly, maybe 600V Polypropylene Film Capacitor.
I cannot find that thread in this forum.

A similar issue on a car forum, see page 8.
http://ttypes.org/ttt2/pdf/TTT2-Issue31.pdf

[Terry in Australia]

Points have run their course as an ignition technology. There are a very small number of vehicles still on the road using them. Therefore no manufacture will invest a nickel in improving them or changing their manufacturing. What is out there now is probably some #$%* made in a garage in Vietnam.

Years ago when points were all we had, there were knockoff DELCO parts peddled to service stations. They were cheap and the boxes looked the same.  We all started getting cars dying in the middle of the street. They had paraffin in the case which would melt and cause a failure.   

That's right Bobby, the condenser, or capacitor, was invented in 1745, long before Harley Davidson eventually perfected it for motorcycle use and sold it to the Japs, so I reckon it's time for us all to finally lay them to rest and move on..........

[754]

I picked up a 1974pinto condenser today, thinks its from the 2.4 engine, it is supposed to fit.
BWD. G 132  from BWD Automotive, 37-18 Northern Blvd, Long Island City, NY 11101
 Looks like it will bolt in.. Might cost more than the Honda one, but easier to find.