40 AMP Alternator

Re: 40 AMP Alternator

Postby mbrST1100 » 09 Jan 2013, 22:42

Cammy Moir wrote:If it works it could be the answer that we have all been searching for. At £139 brand new it could be the bargain of the century...

That would indeed be a smash hit! Pressing thumbs here...
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Re: 40 AMP Alternator

Postby Cammy ST11 » 11 Jan 2013, 00:13

Nearly cried when i found this - because it had ended. Look at that price!!
http://www.ebay.co.uk/itm/140871727369 :(
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Re: 40 AMP Alternator

Postby BB08 MCN » 11 Jan 2013, 01:10

Cammy, when you get yours out, it could be worth trying a 'Motor Factors' they carry loads of parts, including alternators, for cars etc. they may be able to cross reference or match/modify one. The mk1 varadero (carb'd model) fuel pump used to fail cos of were it was placed, a motor factor matched one (off a car) was about 20% of the cost of the bike one, all it needed was a pipe adaptor for the smaller fuel lines.
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Re: 40 AMP Alternator

Postby mbrST1100 » 11 Jan 2013, 01:20

Cammy Moir wrote:Nearly cried when i found this - because it had ended. Look at that price!!
http://www.ebay.co.uk/itm/140871727369 :(

Can't believe it, starting price $ 20,- US for a NOS part... WTF?! :shock:
But the bidders where all noobs with very low feedback numbers, could as well have been a spoof though...
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Re: 40 AMP Alternator

Postby lancepar » 11 Jan 2013, 11:39

I repaired one, that had corrosion damage, bugger of a job, said at the time I would not do another (High mileage service bike). Have piccy but can't post it. Anyway wasn't there a company on ebay not too long ago stating they repaired 40ampers for a fixed price, anybody save the link? Also hasn't there been somebody offering a conversion kit to use another genny? Again I don't have the details, that's why I lurk alot :lol:.
The pan I did the repair on must have been broken up 'cause the very same genny was on ebay as good un, It had a small piece if mesh glued where matey lost some of the case fins :oops: .
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Re: 40 AMP Alternator

Postby lancepar » 11 Jan 2013, 12:03

There's more.
http://www.youtube.com/watch?v=5XCKLavQ2m8
This goes back to July 2012 Bandit genny, did it ever take off :?:
My head aches, my shrink says I must go back to lurking :lol:
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Re: 40 AMP Alternator

Postby mbrST1100 » 11 Jan 2013, 12:27

lancepar wrote:This goes back to July 2012 Bandit genny, did it ever take off :?:

Dunno, Ebay search turns up empty, so my guess is that if faded out...

I'd need to get my hands on a 40A unit, broke or not, to compare it with avail other ones around.

I recall one of those 'Norm Keller essays' stating that its supposed to be oh so easy as there several other identical Denso models from fork lifts, excravators, etc avail, but he never delivered the fundamental evidence then...
But maybe he keps that a secret due running a home busines with that now, like with refurbing the ABS modulators he run's adds for on Ebay?

I mean it does seem reasonable that Denso works with standard off the shelf parts, having only minor changes like the mounting points (engine sided cover) and such.
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Re: 40 AMP Alternator

Postby Cammy ST11 » 11 Jan 2013, 15:16

Lance. The 1200 bandit seems to be a reasonable option. I have looked at one in a breakers online for £60. From the photos it does look very similar - as is the one for the Kubota tractor. The guy on ST Owners was looking at making a conversion kit available however I have not seen it as yet. As with anybody who has suffered a similar fate, I have researched the net till I am blue in the face. There is a solution to this problem. I am sure that Denso must use the same parts in several applications as Martin points out. Just a matter of time till I figure it out. Cheers
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Re: 40 AMP Alternator

Postby Paul Lingard » 11 Jan 2013, 17:25

Cammy I seem to remember that the output of the bandit alternator was'nt 40amp? Just something in the back of my mind but as usual I could be wrong.
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The stock Bandit 1200 alternator has a power output of ~405watts at 5000RPM. This would put a theoretical limit of 405W / 12volts = 33.75Amps. However; this is *only* if you can keep the bike above 5000RPM. If you let the bike idle for a long period of time with too much electrical drain, your battery would eventually go dead. Also, the main fuse for the bike is only 30amps. This effectively puts a cap of 30amps on the entire system. Some list members have been able to run the bike's normal electrics (headlight, taillight, turn indicators, gauges, etc.) in addition to heated grips, an electric vest, and driving lights without a problem. Even so, you should always check the amount of strain being put on your electrical system before adding any high-drain electric accessories.
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Re: 40 AMP Alternator

Postby Andi Archer » 11 Jan 2013, 17:40

Yes the repair used the bandit outer casing and winding with the original armature the output was not fully tested.This said it was a cheap novel idea using a custom made mounting plate but may have a somewhat lower output than the £500ish of an OEM replacement.
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