small alternator
Author
Discussion

nike 5

Original Poster:

169 posts

211 months

Saturday 15th September 2012
quotequote all
I have a Denso alternator - from a Daihatsu Charade.

Are there any smaller alternators available.
Diameter can be as big as you like,
But the depth needs to be as shallow (front pulley to rear of alternator).

Power does not need to be too big

Any thoughts,
thanks

greengreenwood7

958 posts

213 months

Monday 17th September 2012
quotequote all
out of interest if you have a denso from a Charade......why do you want one that's similar? if its died just get another - or is there something else in teh 'wish list' that you didnt mention?

nike 5

Original Poster:

169 posts

211 months

Tuesday 18th September 2012
quotequote all
Similar - but smaller (from front pulley to back of alternator)

I can't fit alternator in the standard position (there is a now a dry sump pump there).
Have fitted a engine crank pulley which extends alternator belt travel further forward (creating more space for alternator in its new position).
Naturally there is less space in my engine bay than the usual applications for the engine (meaning there is only one position I can now fit alternator).
Have put a smaller washer between my charade alternator and alternator pulley (to try to bring is more into line).

I bought the charade alternator, and had expected size to fit, it is close but not quite aligned and will need need some adjustment to (maybe) allow it to fit.

Looking for standard alternator alternatives.
Obviously going to need to fabricate a bracket (not matter what alternator I choose)




rhinochopig

17,932 posts

220 months

Tuesday 18th September 2012
quotequote all
Bike alternator?

nike 5

Original Poster:

169 posts

211 months

Tuesday 18th September 2012
quotequote all
Had not thought of bike alternators.

From what I understand they are generally different from car alternators. (please correct me if I am wrong)
Car alternators use a variable magnets, to charge when needed.
Bike alternators use permanent magnets, and charge constantly - to avoid overcharging battery there is a separate regulator (together am told they are lighter than my charade alternator)

Output is much lower, I have seen one with 27amp, need to work out if it is sufficient to support my car.
(usual accessories, lights, high pressure fuel pump, ecu, plus an electric water pump.

I have a 100mm crank pulley, and a 50mm alternator 2 to 1 ratio



anonymous-user

76 months

Wednesday 19th September 2012
quotequote all
My mate just fitted a Peradus Kancil alternator to his E30 M3, easy fit, very small light and cheap alternator, I think you call the Kancil a nIpper in the UK, and it started life as a dihatsu so should be an easy swap you

Tony427

2,873 posts

255 months

Wednesday 19th September 2012
quotequote all
Have you got space in front of the engine to install a reversed drive alternator? Its a normal alternator but with the rear of the alternator pointing away from the engine. I believe that alternators will work in either direction of rotation so flipping one through 180 degrees with some suitable supports from the front of the engine would work well.

Cheers,

Tony

Clivew

348 posts

197 months

Thursday 20th September 2012
quotequote all
Have you tried Racemettle? http://www.racemettleltd.co.uk/alt.html

nike 5

Original Poster:

169 posts

211 months

Thursday 20th September 2012
quotequote all
Brew - thanks for your suggestion, but looking at the alternator, sadly it looks the same size as my charade.

Tony427 - you are right, that would work (have seen it done)
Want to avoid this route if I can. To my eye, does not look good.
(however may have to take a another look at this if I can't get a better solution)

Clivew - have just phoned http://www.racemettleltd.co.uk/alt.html
really helpful but their smallest fork lift truck alternator is about the same size as mine.

still pursuing rhinochopig's suggestion of a bike alternator.






rev-erend

21,596 posts

306 months

Thursday 20th September 2012
quotequote all
Brise might have what you need:

http://www.brise.co.uk/alternators.html