RockAuto WVE condenser

[Jorzo211]

Bought 2 of these WVE condensers by NGK on Rockauto. I had cut down the bracket a little bit to keep it place. But they put out a nice spark. They are .30 MFD condensers. I was wondering if any has ever used them.

MARK-7, KF-7, KE4-A, MARK 15, WN7A, (60)MERC 200

[crosbyman]

any info on specs …

 

like voltage handling capacity …noise suppression is one thing but handling  EMF kickbacks  from an ignition coil is a much bigger impact on the innards to suffer from.

capacity is fine and .30uf  according to the recent M.Mohat articles is well withing most  magneto applications of the 1950’S where .22uf is the usual size.

they would have to pass the  ” Mohat box  test ”  with a minimum of 275 V DC and up !

Joining AOMCI has priviledges 🙂

• This reply was modified 3 years, 7 months ago by crosbyman.

[Jorzo211]

crosbyman wrote:

any info on specs …

 

like voltage handling capacity …noise suppression is one thing but handling  EMF kickbacks  from an ignition coil is a much bigger impact on the innards to suffer from.

capacity is fine and .30uf  according to the recent M.Mohat articles is well withing most  magneto applications of the 1950’S where .22uf is the usual size.

they would have to pass the  ” Mohat box  test ”  with a minimum of 275 V DC and up !

• This reply was modified 3 years, 7 months ago by crosbyman.

It shows as .30mfd. They put out a nice spark when i spin the flywheel on my mark 15. I’m going to go home today and throw them in mark 7 and just how it handles. Since the mark 15 is currently apart.

MARK-7, KF-7, KE4-A, MARK 15, WN7A, (60)MERC 200

[crosbyman]

great but question remains  what are  the tolerance  characteristics of the condenser…

these are probably the cheapest condensers around but if they fail  under load  10 miles out …

Since building my  own  Mohat  type  1…. test box.. anything that lights up goes in the  garbage .

Microsoft Word – Part2_Condenser_Testers_And_Testing_Correctly.doc (wrcoutboards.org)

 

 

Joining AOMCI has priviledges 🙂

[billw]

I always like to quote the old USPS advertisement, with regard to condensers in my old engines: “If it fits, it ships.” I don’t know how many times I have put condensers made for Chevrolets into Bendix magnetos and it works beautifully, every time, for my interests. I wouldn’t do this to an engine for the fire department or something critical; but otherwise, it’s gonna be just fine.

Long live American manufacturing!

[Mumbles]

What make and model motor are you thinking of installing them in?  Different magnetos require condensers with different uF ratings and the engineers figured this out a long time ago.

If a certain mag requires a capacitor with a 20 – 22 uF rating,  try to stay within 10% of this rating with replacement caps. Over or under capacitance is not good and will increase arcing and pitting of the points.

I watched a video recently of a test magneto with different caps installed and it showed the arcing going on in real time with the different caps being used.  At a certain point the arcing was negligible but started to increase again as the uF rating of the caps was increased. I’ll try and find it and post a link to it here. It’s quite interesting and clearly shows what happens if the wrong cap is used.

[crosbyman]

Mumbles.. are your certain on this one ??    seems a bigger cap will absorb more kick back and  further stop arcking  whereas a  a smaller one will be incapable  of doing the job of storing the kickback  and  let  the EMF kickback shoot across the points

 

Mr.Mohat wester Region article seemed to  indicate much tolerance can be  expected from bigger caps see article …paragraph on sizing caps

Microsoft Word – Part3_Sizing_Condensers_Correctly.doc (wrcoutboards.org)

Joining AOMCI has priviledges 🙂

[Jorzo211]

They will be going into a mark 15. I haven’t gotten around to it yet. I’ve been working 12 hour shifts atm and haven’t had the time.

MARK-7, KF-7, KE4-A, MARK 15, WN7A, (60)MERC 200

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