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#572849 - 11/18/14 8:27 pm podtronics VS Tympanium  
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SEATTLE GS Online content
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One better than the other?

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#572861 - 11/18/14 10:40 pm Re: podtronics VS Tympanium [Re: SEATTLE GS]  
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NickL Online content
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Aus
Matter of opinion.



#572909 - 11/19/14 9:13 am Re: podtronics VS Tympanium [Re: NickL]  
Joined: Nov 2003
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bill50cal Online content
bill50cal  Online Content


Joined: Nov 2003
Posts: 692
orlando fla/ shady valley Tn
either one is better than the sparks brand junk.


windy
72 combat
switchbackcreek.com
#572947 - 11/19/14 1:27 pm Re: podtronics VS Tympanium [Re: SEATTLE GS]  
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Jack Adams Offline
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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

#572985 - 11/19/14 7:05 pm Re: podtronics VS Tympanium [Re: SEATTLE GS]  
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JBMorris Offline
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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
#572991 - 11/19/14 7:44 pm Re: podtronics VS Tympanium [Re: SEATTLE GS]  
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NickL Online content
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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.



#573101 - 11/20/14 4:41 pm Re: podtronics VS Tympanium [Re: SEATTLE GS]  
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Tony Schofield Offline
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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.

#573116 - 11/20/14 5:44 pm Re: podtronics VS Tympanium [Re: Tony Schofield]  
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raf940 Offline
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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
#573342 - 11/22/14 9:12 am Re: podtronics VS Tympanium [Re: NickL]  
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68 royalstar tony Online content
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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.

#573425 - 11/22/14 8:59 pm Re: podtronics VS Tympanium [Re: 68 royalstar tony]  
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NickL Online content
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NickL  Online Content
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Originally Posted By: 68 royalstar tony
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.


Example
http://www.eBay.com.au/itm/Regulator-Rectifier-5-Way-Male-Plug-Fit-Fot-Honda-CB250-1100XX/181302884796?_trksid=p3984.c100052.m2206&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20140131105218%26meid%3Dcb6c092557b8488eb9c4bc19ac89c3a6%26pid%3D100052%26prg%3D20140131105218%26rk%3D1%26rkt%3D4%26sd%3D231026583048



#573492 - 11/23/14 11:28 am Re: podtronics VS Tympanium [Re: SEATTLE GS]  
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68 royalstar tony Online content
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68 royalstar tony  Online Content
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barrie ontario canada
Wow that is low priced, thanks just ordered one. Thanks again.

#576736 - 12/16/14 5:14 pm Re: podtronics VS Tympanium [Re: NickL]  
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68 royalstar tony Online content
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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?

#576748 - 12/16/14 6:39 pm Re: podtronics VS Tympanium [Re: 68 royalstar tony]  
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NickL Online content
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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?


Yes Green = Neg
Red = Pos

The actual case is isolated so that may be connected to either pos or neg Ground it doesn't matter.
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.

Nick



#576789 - 12/17/14 1:19 am Re: podtronics VS Tympanium [Re: NickL]  
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Stuart Online content
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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,

#576790 - 12/17/14 1:37 am Re: podtronics VS Tympanium [Re: SEATTLE GS]  
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NickL Online content
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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



#576792 - 12/17/14 3:11 am Re: podtronics VS Tympanium [Re: NickL]  
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quinten Online content
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quinten  Online Content
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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)

#576802 - 12/17/14 7:24 am Re: podtronics VS Tympanium [Re: SEATTLE GS]  
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NickL Online content
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It is not a bodge but as I said is optional..... the diode forward volt drop will be slightly less on the linked legs as the forward current on each leg will be less but will make little difference.

I just don't see why you think it's a bodge. The connection of the 3rd leg makes no bloody difference bodge wise, to cutting the wire off.

The important thing to remember is that a 3 phase device used on single/bi phase will have 0.58 x the power capacity IE a 350 Watt 3p regulator is only 203 Watt with 2p connected.


Quinten
please explain how 2 diodes in parallel drop more volts than a single one at the same forward current?
Youv'e obviously done extensive research on this eh? I suggest you draw out a 3 phase bridge and a single phase one and look at the connections.

Nick



#576805 - 12/17/14 8:02 am Re: podtronics VS Tympanium [Re: SEATTLE GS]  
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NickL Online content
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3p bridge



I'm suggesting as an option,linking any 2 of L1 L2 L3 for bi phase operation.
How does this increase volt drop and why is it a bodge?



#576821 - 12/17/14 11:39 am Re: podtronics VS Tympanium [Re: NickL]  
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Posts: 1,073
gREgg-K Online content
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gREgg-K  Online Content

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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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