Hey there, just wondering if anybody knows where or if I can get my 90mm 6v generator converted to 12v in Aus, and what I might expect to pay to get it done?
Cheers!
56 VDUB Learner Dubber
17 posts · joined Jul 2013 ·
Converting a 90mm generator to 12v
AA003 Custom Title Time!
1,189 posts · joined Oct 2011 ·
I am guessing that a 90mm is the standard 6v generator?
A friend of mine did this may years ago. He had to strip the windings from the armature and rewind it with two cables that had to equal half of the cross sectional area and twice the number of windings. Many hours of labour. It can be done but would be very expensive.
A friend of mine did this may years ago. He had to strip the windings from the armature and rewind it with two cables that had to equal half of the cross sectional area and twice the number of windings. Many hours of labour. It can be done but would be very expensive.
I read it on samba, so it must be correct.
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂
grumble Son of Jim - Creator of Good
2,672 posts · joined Jun 2008 ·
Some of the industrial engines had the small diameter 12v generator like the porsche.
psimitar Son of Jim - Creator of Good
2,506 posts · joined Jan 2009 ·
Try an industrial motor rewinders or maybe an auto sparky would do it.
The field windings are quite simple and just wound into a round cornered rectangle that the iron core then clamps to the genny body.
The rotor winding is a little more complicated due to how the rotor is wound with multiple windings that are then soldered to the commutator contact points 180 degrees out from each end of the winding. It's do-able but requires much patience. 🙂
The field windings are quite simple and just wound into a round cornered rectangle that the iron core then clamps to the genny body.
The rotor winding is a little more complicated due to how the rotor is wound with multiple windings that are then soldered to the commutator contact points 180 degrees out from each end of the winding. It's do-able but requires much patience. 🙂
madness is in the eye of the beholder 👍
mackaymanx Custom Title Time!
1,611 posts · joined Jan 2006 ·
I have this if you are interested, no armature as it was so rusted I had to push it out in a press. As far as I know the coils/pole are longer in the 12 volt version.
Free as it's of no use to me. Just pay postage. Should have the end plates somewhere.
Free as it's of no use to me. Just pay postage. Should have the end plates somewhere.
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Quote of the week
"Do I wish to send them to you again, nope, no interest can't be bothered really, to much hassle for little or no return."
[IMG]https://www.vw-mplate.com/mplate2-18600.png[/IMG]
"Do I wish to send them to you again, nope, no interest can't be bothered really, to much hassle for little or no return."
[IMG]https://www.vw-mplate.com/mplate2-18600.png[/IMG]
vw54 Administrator Always Waiting 4 Friday
16,723 posts · joined Aug 2002 ·
it used to be done quite easy but now days no auto elec would want to do it
better of finding and early Porsche genny
better of finding and early Porsche genny
I read it on FACEBOOK so it must be true
http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630
http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099
http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603
http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409
http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630
http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099
http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603
http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409
56 VDUB Learner Dubber
17 posts · joined Jul 2013 ·
Thanks for the replies!
I read that the 6v generators put out more than 12v, so you can succcessfully run a 6v generator used in conjunction with a 12v regulator, although it won't charge the battery at idle very well, if at all, and may only last a few years before it burns out with too much use....has anyone else heard about this? Maybe ok for a car that isn't driven a whole lot......
My second 36hp has a milled generator stand to fit a 105mm Porsche generator on it, which works great, but I want something a bit more original looking for my old speed project motor and don't want to hack up a good original 57 block, so will have to fork out for something expensive I guess haha!....
I guess I will look for a Porsche generator then, since thats the easiest method, shame about the lack of holes for a regulator for an original VW look though, but I guess I can drill and tap some holes for one.... It's a shame that there aren't easier/cheaper solutions for a 36hp 🙁
I read that the 6v generators put out more than 12v, so you can succcessfully run a 6v generator used in conjunction with a 12v regulator, although it won't charge the battery at idle very well, if at all, and may only last a few years before it burns out with too much use....has anyone else heard about this? Maybe ok for a car that isn't driven a whole lot......
My second 36hp has a milled generator stand to fit a 105mm Porsche generator on it, which works great, but I want something a bit more original looking for my old speed project motor and don't want to hack up a good original 57 block, so will have to fork out for something expensive I guess haha!....
I guess I will look for a Porsche generator then, since thats the easiest method, shame about the lack of holes for a regulator for an original VW look though, but I guess I can drill and tap some holes for one.... It's a shame that there aren't easier/cheaper solutions for a 36hp 🙁
matara Custom Title Time!
1,342 posts · joined Aug 2002 ·
This might help:-
http://www.allzim.com/store/zims-premium-remanufactured-generator-356-converted-to-12v.html?category_id=452
http://www.allzim.com/store/zims-premium-remanufactured-generator-356-converted-to-12v.html?category_id=452
mackaymanx Custom Title Time!
1,611 posts · joined Jan 2006 ·
356 are 25 amp vs industrial generator at 38 amp, depends on your needs.
Quote of the week
"Do I wish to send them to you again, nope, no interest can't be bothered really, to much hassle for little or no return."
[IMG]https://www.vw-mplate.com/mplate2-18600.png[/IMG]
"Do I wish to send them to you again, nope, no interest can't be bothered really, to much hassle for little or no return."
[IMG]https://www.vw-mplate.com/mplate2-18600.png[/IMG]
56 VDUB Learner Dubber
17 posts · joined Jul 2013 ·
Thanks for the link! I can't believe how pricey though! thats nearly $900 for a generator if I incur the core charge, otherwise, I still have to send a core over to the states, which will still be nearer $700 🤪matara wrote:This might help:-
http://www.allzim.com/store/zims-premium-remanufactured-generator-356-converted-to-12v.html?category_id=452
Yeah, that occoured to me before! the 25amp would be enough for lights? I don't use a whole lot else really, but may eventually build a small self contained stereo off an iPhone with a second battery in parallel with the cars battery....I'm guessing that's where the issues come in with the lower amperage right? 😂mackaymanx wrote:356 are 25 amp vs industrial generator at 38 amp, depends on your needs.
psimitar Son of Jim - Creator of Good
2,506 posts · joined Jan 2009 ·
If I had the time I'd say I'd give it a go for you as being an electrical engineer I've re-wound a few things in my time. Heck I've even got a spare 6V genny in my stash somewhere.
Anyhoo, the idea of running a 6v with a 12v reg is a bad idea as it's running outside isn't constant delivery zone and will get pretty warm and hence fail at some point that can be determined.
Anyhoo, the idea of running a 6v with a 12v reg is a bad idea as it's running outside isn't constant delivery zone and will get pretty warm and hence fail at some point that can be determined.
madness is in the eye of the beholder 👍
Old Dubber Wolfsburg Wizard
605 posts · joined Aug 2002 ·
This place can do it
Rapid Rewinding Pty Ltd
50 Dollis St, Rocklea QLD 4106
Rapid Rewinding Pty Ltd
50 Dollis St, Rocklea QLD 4106
Grahame
visit my club site at www.vwdcqinc.org.au
visit my club site at www.vwdcqinc.org.au
56 VDUB Learner Dubber
17 posts · joined Jul 2013 ·
Ahh, I wish you would haha! Theoretically, how much would you charge? 😂psimitar wrote:If I had the time I'd say I'd give it a go for you as being an electrical engineer I've re-wound a few things in my time. Heck I've even got a spare 6V genny in my stash somewhere.
Anyhoo, the idea of running a 6v with a 12v reg is a bad idea as it's running outside isn't constant delivery zone and will get pretty warm and hence fail at some point that can be determined.
cool, have you used these guys before? they look expensive😂Old Dubber wrote:This place can do it
Rapid Rewinding Pty Ltd
50 Dollis St, Rocklea QLD 4106
psimitar Son of Jim - Creator of Good
2,506 posts · joined Jan 2009 ·
Probably $35 an hour but I'm not sure how long the rotor would take. The field windings would be about an hours work but the rotor could be 3 hrs plus. Having not re-wound a genny I can't be more specific than that.
madness is in the eye of the beholder 👍
AA003 Custom Title Time!
1,189 posts · joined Oct 2011 ·
I doubt if you could rewind an armature in one day.
I used to do them as an apprentice many years ago.
The friend of mine that did took a few days as it was tight to get double the windings in the same space. He ended up using two conductors. I can't remember whether he had to modify the feld coils or not.
I used to do them as an apprentice many years ago.
The friend of mine that did took a few days as it was tight to get double the windings in the same space. He ended up using two conductors. I can't remember whether he had to modify the feld coils or not.
I read it on samba, so it must be correct.
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂
psimitar Son of Jim - Creator of Good
2,506 posts · joined Jan 2009 ·
As I've never done a genny before the rotor rewind time was a total guesstimate. I do know they aren't easy though.AA003 wrote:I doubt if you could rewind an armature in one day.
I used to do them as an apprentice many years ago.
The friend of mine that did took a few days as it was tight to get double the windings in the same space. He ended up using two conductors. I can't remember whether he had to modify the feld coils or not.
I would hazzard that the field would need rewinding too just due to basic ohms law or you will greatly increase current and hence heat in the field winding.
madness is in the eye of the beholder 👍
AA003 Custom Title Time!
1,189 posts · joined Oct 2011 ·
Very hard trying to get twice the number of windings into the same space.psimitar wrote:As I've never done a genny before the rotor rewind time was a total guesstimate. I do know they aren't easy though.
I'm just wondering if the regulator would take care of it?I would hazzard that the field would need rewinding too just due to basic ohms law or you will greatly increase current and hence heat in the field winding.
I read it on samba, so it must be correct.
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂
psimitar Son of Jim - Creator of Good
2,506 posts · joined Jan 2009 ·
True but normally with windings you either double the length or reduce the wire gauge to increase the resistance but the latter method means that current capacity could be less.AA003 wrote:Very hard trying to get twice the number of windings into the same space.
Possibly but using dissimilar wire gauge will make the regulator work harder as the field and rotor windings magnetic field interaction would possibly be quite different than in similar winding gauge.AA003 wrote:I'm just wondering if the regulator would take care of it?
Has got me thinking that I'd really like to check out how Porsche did there small body 12v genny, altho does kind of explain why the Porsche version has a lower current output. 🙂
madness is in the eye of the beholder 👍
AA003 Custom Title Time!
1,189 posts · joined Oct 2011 ·
Yes the wire gauge will be half of the cross sectional area which will halve the current output. The wattage will be the same.psimitar wrote:True but normally with windings you either double the length or reduce the wire gauge to increase the resistance but the latter method means that current capacity could be less.AA003 wrote:Very hard trying to get twice the number of windings into the same space.
I read it on samba, so it must be correct.
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂
Sometimes Volkswagen dealers sell spare parts. Amazing isn't it!😂
6621104 Casual Dubber
48 posts · joined May 2010 ·
Did this, well paid for a 12 volt rewind for a type 3 generator, $700
psimitar Son of Jim - Creator of Good
2,506 posts · joined Jan 2009 ·
OUCH 🤪 🤪 🤪6621104 wrote:Did this, well paid for a 12 volt rewind for a type 3 generator, $700
madness is in the eye of the beholder 👍