Replacement options for Dynamo with PS drive
#1
Replacement options for Dynamo with PS drive
Interested in any experience people have had of replacing the existing dynamo with PS drive with a more modern high output alternative.
I've found two; The first by Powerlite with an output of 60 Amps
https://www.autosparks.co.uk/electri...isted-steering
The second by Accuspark with an output of 45 Amps
Stealth Dynamator
The price difference is significant, the Powerlite is 685 sterling versus 170 sterling for the Accuspark.
What am I missing?
I've found two; The first by Powerlite with an output of 60 Amps
https://www.autosparks.co.uk/electri...isted-steering
The second by Accuspark with an output of 45 Amps
Stealth Dynamator
The price difference is significant, the Powerlite is 685 sterling versus 170 sterling for the Accuspark.
What am I missing?
#2
It depends on what electrical items you are going to run on the car and whether you require more power. I fitted the Accuspark Dynamator to my 3.4 S Type a couple of years ago. All the electrics are standard on the car. I have left the original radio in situ but because it is positive earth and the new system is negative earth I have just disconnected the power to it. Who needs a radio anyway. I have not had any problems with charging or running any of the cars systems such as fans, wipers and lights all at the same time on a dark wet night. Looks just like the original and powers the PAS pump. No brainer really for a cost effective alternator.
#3
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#6
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paddyx350 (05-08-2021)
#7
I made my alternator with power steering. I started with one from a Vauxhaul Astra 1.7 diesel, it's internally regulated and has a vacuum pump on the back. I removed the vacuum pump, then made an adapter plate and machined a coupling that mated the splined shaft of the alternator with the slot of the PS pump. I needed to use the pulley from a Series 1 4.2 E Type to have the right belt profile and small diameter for an alternator
The PS pump is moved a bit further forward compared to the original, but it works fine. I removed the spring tensioner and used an adjustable link to make the alternator the tensioning member. SO far it works very well, and charges at idle even under high load.
The main reason for me to do this was I was converting to EFi and the dynamo didn't put out enough power, plus it was very "noisy" power.
The PS pump is moved a bit further forward compared to the original, but it works fine. I removed the spring tensioner and used an adjustable link to make the alternator the tensioning member. SO far it works very well, and charges at idle even under high load.
The main reason for me to do this was I was converting to EFi and the dynamo didn't put out enough power, plus it was very "noisy" power.
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#8
It is that variable voltage and high cutting in speed that the generator has that makes the Alternator version better. The alternator gives voltage as soon as it starts to turn to even at tickover speeds of 500 to 600 rpm the alternator is producing power. Not sure about max output but I believe the alternator is a constant power right through the range of rpm.
#9
It depends on what electrical items you are going to run on the car and whether you require more power. I fitted the Accuspark Dynamator to my 3.4 S Type a couple of years ago. All the electrics are standard on the car. I have left the original radio in situ but because it is positive earth and the new system is negative earth I have just disconnected the power to it. Who needs a radio anyway. I have not had any problems with charging or running any of the cars systems such as fans, wipers and lights all at the same time on a dark wet night. Looks just like the original and powers the PAS pump. No brainer really for a cost effective alternator.
You can always get your radio converted to - earth. I had mine done to accept an Ipod and bluetooth whilst still looking totally original!
Ray
#10
Retro Air in Texas sells an Alternator Conversion for Jaguar saloons with a power steering adapter. Very expensive at around $600.00 US but claims 70 amps output.
www.retroair.com
www.retroair.com
#11
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It is that variable voltage and high cutting in speed that the generator has that makes the Alternator version better. The alternator gives voltage as soon as it starts to turn to even at tickover speeds of 500 to 600 rpm the alternator is producing power. Not sure about max output but I believe the alternator is a constant power right through the range of rpm.
#12
I made my alternator with power steering. I started with one from a Vauxhaul Astra 1.7 diesel, it's internally regulated and has a vacuum pump on the back. I removed the vacuum pump, then made an adapter plate and machined a coupling that mated the splined shaft of the alternator with the slot of the PS pump. I needed to use the pulley from a Series 1 4.2 E Type to have the right belt profile and small diameter for an alternator
The PS pump is moved a bit further forward compared to the original, but it works fine. I removed the spring tensioner and used an adjustable link to make the alternator the tensioning member. SO far it works very well, and charges at idle even under high load. The main reason for me to do this was I was converting to EFi and the dynamo didn't put out enough power, plus it was very "noisy" power.
The PS pump is moved a bit further forward compared to the original, but it works fine. I removed the spring tensioner and used an adjustable link to make the alternator the tensioning member. SO far it works very well, and charges at idle even under high load. The main reason for me to do this was I was converting to EFi and the dynamo didn't put out enough power, plus it was very "noisy" power.
Jagboi64 How many amps is the Vauxhall alternator?
What was your cost to fabricate it? I find that most of the conversions are way overpriced for an alternator inside a generator case and too little amperage.
Thanks.
Last edited by Jose; 05-15-2021 at 10:58 AM.
#13
It's 90 amps. Cost was Alternator, and the metal, as I have a lathe and milling machine so I made it myself, plus the cost of a 4.2 E Type alternator pulley to keep the double groove belt. I bought the alternator off Ebay UK, I just did a search and this was the first one that came up: https://www.ebay.co.uk/itm/323899258...Cclp%3A2334524
I can't remember which vendor I bought from, it wasn't this one, that was just for an example of the type of alternator. I know the listing says 70A, there was a test sheet in the box with my alt that showed 90A.
It took two tries, the first design I came up with didn't last too long, so I had to do a redesign.So far it's holding up well. But before, you ask, I'm not in the business of building conversions, as I have not put enough miles on it yet to be fully confident of the design. Feel free to "copy my homework" as it is though.
I have an electric fan, as well as EFI added to the car and the voltmeter stays charging at idle. I changed the dash amp meter to a voltemeter. Some photos of the adapter are here:
I can't remember which vendor I bought from, it wasn't this one, that was just for an example of the type of alternator. I know the listing says 70A, there was a test sheet in the box with my alt that showed 90A.
It took two tries, the first design I came up with didn't last too long, so I had to do a redesign.So far it's holding up well. But before, you ask, I'm not in the business of building conversions, as I have not put enough miles on it yet to be fully confident of the design. Feel free to "copy my homework" as it is though.
I have an electric fan, as well as EFI added to the car and the voltmeter stays charging at idle. I changed the dash amp meter to a voltemeter. Some photos of the adapter are here:
Last edited by Jagboi64; 05-15-2021 at 11:58 AM.
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#14
It's 90 amps. Cost was Alternator, and the metal, as I have a lathe and milling machine so I made it myself, plus the cost of a 4.2 E Type alternator pulley to keep the double groove belt. I bought the alternator off Ebay UK, I just did a search and this was the first one that came up. I can't remember which vendor I bought from, it wasn't this one, that was just for an example of the type of alternator. I know the listing says 70A, there was a test sheet in the box with my alt that showed 90A.
It took two tries, the first design I came up with didn't last too long, so I had to do a redesign.So far it's holding up well. But before, you ask, I'm not in the business of building conversions, as I have not put enough miles on it yet to be fully confident of the design. Feel free to "copy my homework" as it is though.
I have an electric fan, as well as EFI added to the car and the voltmeter stays charging at idle. I changed the dash amp meter to a voltemeter. Some photos of the adapter are here:
https://www.flickr.com/photos/129643...57719133816569
It took two tries, the first design I came up with didn't last too long, so I had to do a redesign.So far it's holding up well. But before, you ask, I'm not in the business of building conversions, as I have not put enough miles on it yet to be fully confident of the design. Feel free to "copy my homework" as it is though.
I have an electric fan, as well as EFI added to the car and the voltmeter stays charging at idle. I changed the dash amp meter to a voltemeter. Some photos of the adapter are here:
https://www.flickr.com/photos/129643...57719133816569
Jagboi64, no I was not thinking of asking you to make one of those alternator kits for me, but if you insist, 70 or 90 amps is my number. I have a loud Jaguar stereo in my S type, as well as 200 watts`of motorcycle spot lights (where lame fog lights would be), that annoy the living dayights out of truckers and everybody else. But only when doing 80 mph. Have to turn them off when stopped at red lights otherwise the battery is discharged dead in less than 60 seconds. Not fair. And I don't care to duplicate the C42 "look" or if the pump is a bit forward. What I want is AMPS. Thanks.
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#16
Yes, the car was originally a C48. I removed the Ammeter and replaced it with a voltmeter. I joined the heavy wires together that went to the ammeter and put heat shrink tubing over the joint to protect it.I ran the wire from the alternator to the starter solenoid, where it connects to the battery.
I had no intentions of making this car 100% original, but I wanted it to at least be period correct until the bonnet is opened. I'd never change the engine, but I'm ok with changing the accessories.
I had no intentions of making this car 100% original, but I wanted it to at least be period correct until the bonnet is opened. I'd never change the engine, but I'm ok with changing the accessories.
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#18
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Glyn M Ruck (05-15-2021)
#19
Just for general info I have been in touch with Accuspark and they have no Dynamator units suitable for the S Type with the PS drive at the moment.
They are having problems with delivery and won't have any units in for 3-6 months. I presume this means they come on a slow boat from China.
They were very quick in responding to my query re delivery.
They are having problems with delivery and won't have any units in for 3-6 months. I presume this means they come on a slow boat from China.
They were very quick in responding to my query re delivery.
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Glyn M Ruck (05-19-2021)
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