Topic: looking for a replacement rectifier, would this work?

[anchorweight550]

looking around on ebay for a cheapo rectifier, this one is made for wind generators, but has the correct number of tabs and sounds like it could withstand a lot.

http://cgi.ebay.com/80-AMP-3-THREE-PHASE-BRIDGE-RECTIFIER-WIND_W0QQitemZ260532258382QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3ca8eec64e#ht_1516wt_941

[Queeg]

80 is a little high output. you really want a 35-50 amp.  i would rather use one smaller. but the price is right. 

 pros and cons.
pros: it will run a little cooler in theory
        price is right

 cons: its way higher then the stock unit. i think my stock on was 34amps
         you might want to put a fuse inline on the power wire(opinion)
 
       give it a try if you want . or message me and i can go find a closer one at the electronics store. maybe 40dollars. (sommtimes more or less depending on  stock)
   or i can make one from 2  single phase rectifiers for about 15 dollars with a heatsync!
 i would hate to see you damage sometihing trying not to spend 300$ on a stock unit.
  maybe see if ebay has a smaller amperage unit.

[Queeg]

here is a 40 amp

http://cgi.ebay.com/3-Phase-Diode-Bridge-Rectifier-40A-1000V_W0QQitemZ350305480812QQcmdZViewItemQQptZUK_BOI_Electrical_Components_Supplies_ET?hash=item518fd5706c

   

[anchorweight550]

the same guy has these on his site too, even cheaper!

http://cgi.ebay.com/35-AMP-3-THREE-PHASE-BRIDGE-RECTIFIER-WIND_W0QQitemZ250492010193QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3a527cbed1

should work........right?

[Queeg]

ooooh #$%@, how many u gonna buy?
 im totally there!
 i might buy the rest for my shop. always need them for randoms stuff and motorcycles.

[Queeg]

ohhhh and dont forget a heat sink!

[anchorweight550]

what does anybody else think? is this a cheap quick fix or just cheap?

[dave500]

you could replace the lot with a combination electronic rec/reg,say from a boldor.

[TwoTired]

You could have told us which bike this was going into.

You really only need a 25 amp rectifier for the SOHC4.   The current rating is its withstand capability, or what it can pass safely.  Higher ratings don't make any more power output unless you have it available from the alternator and the using circuit demands it.  The SOHC4 alternator output is self limiting in so far as load limits.

So, any of the three phase rectifiers referenced above will work in circuit.

All of them will cook off if you hook up a charged battery to the outputs with reversed polarity.  The higher rated ones will survive slightly longer when abused like this. (measured in seconds)

[brewsky]

Radio Shack 25A 50V part # 276-1185...... $3.29 in stock at most stores.

[mark]

Radio Shack 25A 50V part # 276-1185...... $3.29 in stock at most stores.

It's a single-phase bridge. Take two - they're small.

On the bright side... at the local RS the bags all say 25A 50V and contain a 35A 400V (GBPC3504) rectifier.