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  #1  
Old 05-03-2012, 04:40 PM
johnsiddle johnsiddle is offline
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Default Which is best?

Is there any consensus as to the best type of car to convert a rear wheel drive with its inline engine or a front wheel drive with its transverse engine.

I am worried that a transverse engine bay might not have sufficient room to fit a 16in motor.

I am thinking something like a Mondeo/Vectra Estate or similar.

John
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  #2  
Old 05-03-2012, 05:52 PM
somanywelps somanywelps is offline
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Default Re: Which is best?

It depends on the car itself and the FWD/RWD drive thing is driver preference.
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Old 05-04-2012, 01:40 AM
FireCrow FireCrow is offline
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Default Re: Which is best?

Quote:
Originally Posted by johnsiddle View Post
...might not have sufficient room to fit a 16in motor...
Bloody hell, are you trying to build a monster? Where did you find motor that big?!?!
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  #4  
Old 05-04-2012, 01:46 AM
johnsiddle johnsiddle is offline
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Default Re: Which is best?

Quote:
Originally Posted by FireCrow View Post
Bloody hell, are you trying to build a monster? Where did you find motor that big?!?!
From a milk float.
I thought that was the size I was supposed to get...
John
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  #5  
Old 05-04-2012, 02:15 AM
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Ziggythewiz Ziggythewiz is offline
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Default Re: Which is best?

He might mean 16 long instead of across
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  #6  
Old 05-04-2012, 03:00 AM
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Default Re: Which is best?

Motor length is an issue for transverse mounting. My 12" motor was just too long, at about 19", to fit in an MR2.

16" might be fine if the adapter plate isn't too thick to get the magic number right.
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Old 05-04-2012, 03:10 AM
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Default Re: Which is best?

Also in terms of layout, a transverse layout could give a more compact installation with room for the pack where the fuel tank was but I think a front motor rear drive is easier to set up but can mean the pack is distributed in two or three places around the car.
Mid engine layouts should be the same as any transverse layout but could lead to less space for a pack due to the shape of the vehicle.

Given a clean slate to convert I would be tempted to use a front motor rear drive layout.
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Old 05-04-2012, 03:26 AM
johnsiddle johnsiddle is offline
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Default Re: Which is best?

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Originally Posted by Woodsmith View Post
Also in terms of layout, a transverse layout could give a more compact installation with room for the pack where the fuel tank was but I think a front motor rear drive is easier to set up but can mean the pack is distributed in two or three places around the car.
Mid engine layouts should be the same as any transverse layout but could lead to less space for a pack due to the shape of the vehicle.

Given a clean slate to convert I would be tempted to use a front motor rear drive layout.
I didn't mean mid engine, but front engine rear wheel drive. Most decent modern cars are front wheel drive. If I go too old the wife wont drive it.... she dont drive me anymore cuz I am too old......
It would fit my Hylux Surf great but she wont let me convert it, also it is an Auto.

Yes I did mean 16ins long.

Just out of interest how do you switch the high voltage off when parked, you just cant put 500amps thro an ignition switch.
Is that why I was looking for contactors yesterday Woodsmith????
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Old 05-04-2012, 03:34 AM
somanywelps somanywelps is offline
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Default Re: Which is best?

Quote:
Originally Posted by johnsiddle View Post
I didn't mean mid engine, but front engine rear wheel drive. Most decent modern cars are front wheel drive. If I go too old the wife wont drive it.... she dont drive me anymore cuz I am too old......
It would fit my Hylux Surf great but she wont let me convert it, also it is an Auto.

Yes I did mean 16ins long.

Just out of interest how do you switch the high voltage off when parked, you just cant put 500amps thro an ignition switch.
Is that why I was looking for contactors yesterday Woodsmith????
The ignition switch is the contactor drivers... or precharge depending on how you do it. The Soliton Jr and Soliton 1 have something to be said for them...
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  #10  
Old 05-04-2012, 03:49 AM
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Default Re: Which is best?

Quote:
Originally Posted by johnsiddle View Post
Just out of interest how do you switch the high voltage off when parked, you just cant put 500amps thro an ignition switch.
Is that why I was looking for contactors yesterday Woodsmith????
Yes, that is what the contactors would have been for.

The ignition switch would control the 12V coil on the contactor and the contactor would make/break the pack voltage.

There would be a precharge resistor across the contacts to allow the capacitors in the controller to charge up first, for a few seconds, before the contacts are closed and so the huge inrush of current is avoided when the contacts close.
This is where the cost of these contactors become a small issue as cheap relays cannot handle the continuous current capacity not can they break high DC voltage without arcing and burning.

The ones I have on the tractor are 200A 80V contacts. They are fine for the 48V I have but I shouldn't open them under full load, 400A, as the contacts aren't rated to handle that. Once, or twice, I might get away with it in an emergency but in an emergency I might find they cannot.

Look up Kilovac.
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