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podtronics VS Tympanium #572849
11/18/14 8:27 pm
11/18/14 8:27 pm
Joined: Sep 2009
Posts: 632
SEATTLE WA
S
SEATTLE GS Offline OP
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SEATTLE GS  Offline OP
BritBike Forum member
S
Joined: Sep 2009
Posts: 632
SEATTLE WA
One better than the other?

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Re: podtronics VS Tympanium [Re: NickL] #572909
11/19/14 9:13 am
11/19/14 9:13 am
Joined: Nov 2003
Posts: 729
Orlando fla/ shady valley Tn
B
bill50cal Offline
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bill50cal  Offline
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B
Joined: Nov 2003
Posts: 729
Orlando fla/ shady valley Tn
either one is better than the sparks brand junk.


windy
72 combat
switchbackcreek.com
Re: podtronics VS Tympanium [Re: SEATTLE GS] #572947
11/19/14 1:27 pm
11/19/14 1:27 pm
Joined: Jan 2008
Posts: 1,114
Noblesville, IN
Jack Adams Offline
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Jack Adams  Offline
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Joined: Jan 2008
Posts: 1,114
Noblesville, IN
FWIW,I've seen a couple of Tympaniums that were bad (The potting material was dark,like it had cooked) but I have not ever had a Pod go bad.I'm thinking the Pod's case(heatsink) helps. Jack

Re: podtronics VS Tympanium [Re: SEATTLE GS] #572985
11/19/14 7:05 pm
11/19/14 7:05 pm
Joined: Jan 2008
Posts: 1,522
Farmington,Connecticut,USA
JBMorris Offline
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JBMorris  Offline
BritBike Forum member
Joined: Jan 2008
Posts: 1,522
Farmington,Connecticut,USA
Originally Posted By: SEATTLE GS
One better than the other?


Pod (Prince Of Darkness)is now being looked after by a very capable and worthy quartermaster.

Not too sure about the 'other' one for service- if needed.

Found mine (Pod)with an old price tag for $35 - 6 yrs. past.


1978 Bonneville T140V PX
Re: podtronics VS Tympanium [Re: SEATTLE GS] #573101
11/20/14 4:41 pm
11/20/14 4:41 pm
Joined: Apr 2014
Posts: 7
British Columbia Canada
T
Tony Schofield Offline
BritBike Forum member
Tony Schofield  Offline
BritBike Forum member
T
Joined: Apr 2014
Posts: 7
British Columbia Canada
I have a Podtronics on the Norton and a Tympanium on the Trident. They both work well and I can't say that one is better than the other.

Re: podtronics VS Tympanium [Re: Tony Schofield] #573116
11/20/14 5:44 pm
11/20/14 5:44 pm
Joined: Mar 2006
Posts: 3,718
gastonia nc
R
raf940 Offline
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raf940  Offline
BritBike Forum member
R
Joined: Mar 2006
Posts: 3,718
gastonia nc
have pod on A65 and tymp on T120 (long time) both work good for me


1972 Triumph T120
1968 BSA A65
1968 MGB Roadster
1979 Chevrolet Camaro Berlinetta
1969 Honda Mini Trail
1939 farmall f30 tractor
2004 Honda Shadow Aero
1972 BSA Thunderbolt
1975 yamaha xs650b
1972 Norton commando project
Re: podtronics VS Tympanium [Re: NickL] #573342
11/22/14 9:12 am
11/22/14 9:12 am
Joined: May 2006
Posts: 466
barrie ontario canada
6
68 royalstar tony Offline
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68 royalstar tony  Offline
BritBike Forum member
6
Joined: May 2006
Posts: 466
barrie ontario canada
Originally Posted By: NickL
Make sure you obtain a correctly rated type as some stators have a higher output than others.

The Tympanium units I have tested in the past use a single SCR. This is fine for bikes with coil ignition but may cause battery overcharging when used on a bike with a magneto as there is no load at all without the lights on. The units I tested were pre 2004 and the design may have changed so it would be worth asking the question.

Personally I now use cheap chinese devices with no problems.

what are these cheap Chinese devices that you tal about? Thank Tony.

Re: podtronics VS Tympanium [Re: SEATTLE GS] #573492
11/23/14 11:28 am
11/23/14 11:28 am
Joined: May 2006
Posts: 466
barrie ontario canada
6
68 royalstar tony Offline
BritBike Forum member
68 royalstar tony  Offline
BritBike Forum member
6
Joined: May 2006
Posts: 466
barrie ontario canada
Wow that is low priced, thanks just ordered one. Thanks again.

Re: podtronics VS Tympanium [Re: NickL] #576736
12/16/14 5:14 pm
12/16/14 5:14 pm
Joined: May 2006
Posts: 466
barrie ontario canada
6
68 royalstar tony Offline
BritBike Forum member
68 royalstar tony  Offline
BritBike Forum member
6
Joined: May 2006
Posts: 466
barrie ontario canada
Thanks for the tip, mine came today. When you wire them is it red + and green - even on pos ground like my 66 TR6?

Re: podtronics VS Tympanium [Re: NickL] #576789
12/17/14 1:19 am
12/17/14 1:19 am
Joined: Jun 2002
Posts: 9,864
Scotland
S
Stuart Online content
BritBike Forum member
Stuart  Online Content
BritBike Forum member
S
Joined: Jun 2002
Posts: 9,864
Scotland
Hi,

Originally Posted By: NickL
Originally Posted By: 68 royalstar tony
Thanks for the tip, mine came today. When you wire them is it red + and green - even on pos ground like my 66 TR6?

Green = Neg
Red = Pos

Fwiw, that's how Honda uses those colours.

Originally Posted By: NickL
If using on a two wire stator just join any two yellow wires together and connect the joined pair and the other yellow one across the stator

Just as a matter of interest, is there any advantage to joining two of the Yellow wires? Reason I ask is I've seen a single-phase alternator just connected to two of the wires on a 3-phase rect./reg., with the other one just insulated?

Also, seems the way Podtronics do a single-phase is to cut off one of a 3-phase's wires flush with the casing? confused

Regards,

Re: podtronics VS Tympanium [Re: NickL] #576792
12/17/14 3:11 am
12/17/14 3:11 am
Joined: Sep 2013
Posts: 1,664
Pacific northwest
Q
quinten Offline
BritBike Forum member
quinten  Offline
BritBike Forum member
Q
Joined: Sep 2013
Posts: 1,664
Pacific northwest
Originally Posted By: NickL
All you are doing is 'doubling-up' on a leg of the bridge rectifier, you can just cut off one yellow cable if you wish but as the bridge is 3 phase why not just parallel up two of the legs.

Nick

This is all splitting hairs
, I think ,
but here goes ... connecting a single phase ( 2 wire stator ) up to a 3 phase
(3 input wire) r/r unit ...
by hooking one stator output wire
To- 2 , of the 3 phase r/r input wires offers marginal if any gain.
The stator output leg that has it output shared by the extra diode bridge may have that side of the bridge run cooler ... but has , at the same time , an extra forward voltage drop to pay in order to operate .

The diode bridge is not the weak point in these low cost ( to manufacturer units )
So whats the point of this bodge ?
A 2 wire stator will work just a well , or better ,
on a 3 phase r/r
by leaving the 3rd. input wire ( un tapped)

Re: podtronics VS Tympanium [Re: NickL] #576821
12/17/14 11:39 am
12/17/14 11:39 am
Joined: Sep 2007
Posts: 1,110
Ottawa, Canada
gREgg-K Offline

BritBike Forum member
gREgg-K  Offline

BritBike Forum member
Joined: Sep 2007
Posts: 1,110
Ottawa, Canada
Nick,

You're correct, linking any two of the yellow inputs to the 3 phase bridge will work fine in a single phase application. It is functionally identical to clipping off one of them, and as you say, can not add a series diode drop. I fail to see why someone would consider this a bodge, at least not with my understanding of that word's meaning and intent.

I suspect PODtronics chose the "clipping off a lead" approach because it is simpler, and does not need explaining in the customer documentation ... nor is there possibility of error if the instructions for clipping are misinterpreted.

.. Gregg


Spyder Integrated Technologies
Lucas, BTH, & Miller Magneto & Dynamo Restoration
SMITHS Chronometric Restoration
magneto@spyder-it.com

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