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http://c5alive.co.uk/forum/index.php?topic=1440.0


Author Topic: Some works before put on the road ...  (Read 9023 times)

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alexbromo

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Some works before put on the road ...
« on: 21, May, 2010 - 23:47:48 »
As told in the welcome section, I'm trying to put on the road my C5.

I'm waiting for new tyres and tubes from a local bike shop, so this evening i went to the garage to see how to proceed and take some picture (sorry for poor quality, i used my mobile phone). :(

First of all: i washed the C5 using a strong degreaser (Resol) and a rough sponge, so now i discovered the underlying white !  ;D

Also the bar installed under the shell for two days has done the job, and the twist on the shield has finally been straightened.






Here are all the items I've found in the box:



the only item missing seems to be the battery cover, so i have two ignition switches hanging to the cables: i will build a sort of new cables to connect the battery (or batteries).

Finally i dismantled the power electronic and i discovered a point of fault at the connection of RED output motor cable:



For unknown reason, in that point the cable overheated and burned the PCB area, destroying also the near diode:







so must know the type of diode to replace it ! Then i will try to strengthen the burned printed circuit soldering it.

Below two ignition switches:





I believe that the blue cable is NEGATIVE and the brown is POSITIVE, right ?  :)

Alex Bromo
« Last Edit: 22, May, 2010 - 08:10:00 by alexbromo »

Offline PLOD11

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Re: Some works before put on the road ...
« Reply #1 on: 22, May, 2010 - 01:18:43 »
Yes you are right brown Pos and blue Neg ....

That Circuit board looks in a bad way, but is repairable.

Have a look here for the circuit diagrams for the control box etc, this will help values of components.

http://www.c5alive.co.uk/downloads2.htm

John

Offline radiomarty

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Re: Some works before put on the road ...
« Reply #2 on: 22, May, 2010 - 07:23:12 »
Hi the diode is an 1N5401 ie the commutation diode - just replaced a burnt out one myself - the burning may be the result of the connection becoming loose and 'arcing'.

Offline coverman

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Re: Some works before put on the road ...
« Reply #3 on: 25, May, 2010 - 10:28:31 »
glad to see that your Porsche is Guards Red, same as mine.

alexbromo

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Re: Some works before put on the road ...
« Reply #4 on: 08, June, 2010 - 08:14:03 »
coverman that Porsche is not my car, it is a frined's racing 911 that i hosted in my workshop for the night before a race.

I restored the C5's control unit replacing the commutation diode and the connection plate:





I rebuild the plate using a 2mm aluminium bar, shaped and drilled as original, but i guess that the electrical characteristics are a lot different from the original item.

I read in the "Unofficial" documentation, that this metal plate must have a specific resistance (very low), so i believe that this new alu plate can't be adequate for the circuit ...  :(

Alex Bromo

Offline coverman

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Re: Some works before put on the road ...
« Reply #5 on: 08, June, 2010 - 09:19:48 »
You have a very spacious workshop even if the Porsche is not yours! I am not brave enough to tackle repairs to the control box so your work is admired.

aladds

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Re: Some works before put on the road ...
« Reply #6 on: 13, June, 2010 - 21:56:56 »
I think an aluminium plate shouldn't do any damage, but due to the current going through it there is a possibility it could melt. A piece of steel should be fine, as that's what I think the original is.
It's not a specific resistance, you're thinking of the current shunt near the bottom (different piece of metal with 4 connections to it).

I notice that there's a replacement fuse in your box from that picture, might be worth checking to see if it's the right value, a fuse which isn't clear usually means it's a household fuse, which certainly shouldn't be used in a C5! (possibly led to the burning issue it's had!)

Offline Retro Andy

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Re: Some works before put on the road ...
« Reply #7 on: 15, June, 2010 - 21:03:02 »
You have got three great classic cars in your workshop, do you specialise in VW's as I noticed the front of a camper on the wall up high I think ?

Retro Andy.

alexbromo

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Re: Some works before put on the road ...
« Reply #8 on: 16, September, 2010 - 12:18:15 »
You have got three great classic cars in your workshop, do you specialise in VW's as I noticed the front of a camper on the wall up high I think ?

Retro Andy.
You have a good view, it is an ald front of a Samba Bus



that actually we are restoring.  :)

Incidentally, last month we bought a '69 Beetle ... ehm ...

  
;D

Alex Bromo

alexbromo

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Re: Some works before put on the road ...
« Reply #9 on: 16, September, 2010 - 12:40:27 »
After the stop due the summer holidays, works around C5 started again.

I completely disassembled the vehicle and restored the frame. It was a bit rusted and the paint disappeared in various areas, so i treated it with sandpaper and then with Fertan (specially on rusted areas)





and then resprayed using a very robust paint (specific for car's wheels)




the fork has just painted with primer.

I also bought new tyres and tubes (Kenda because Schwalbe aren't available in Italy)



... and a little temptation ...





 ;D

Alex Bromo
« Last Edit: 16, September, 2010 - 13:17:50 by alexbromo »

Karl

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Re: Some works before put on the road ...
« Reply #10 on: 16, September, 2010 - 13:03:28 »
looking good so far mate  8)

Offline coverman

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Re: Some works before put on the road ...
« Reply #11 on: 16, September, 2010 - 16:18:35 »
Hi, if that Kenda tyre is the same as I have on my front wheel., it has a maxiximum inflation pressure of 36psi. Mine would come off the rim at 40 psi, but at 35 psi survived 2 laps of the Brooklands circuit ( at a speed a racing tortoise would have been ashamed of). I run Schwalbe rear tyres at 55psi( as my gauge won't read to the 60 psi maximum permitted). This high pressure removes the likelihood of much sidewall compliance hence reducing the tendency to roll

Karl

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Re: Some works before put on the road ...
« Reply #12 on: 16, September, 2010 - 16:26:28 »
Although the Schwalbe tyres cope with the higher tyre pressures, I'm not so sure the plastic wheels cope all that well.

Adam Harper always recommended sticking to the original Sinclair figures...I compromised and stuck with 40psi for the rear.

Fitting a steel front wheel permits higher pressure at the front.

Offline Retro Andy

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Re: Some works before put on the road ...
« Reply #13 on: 17, September, 2010 - 06:12:53 »
Looks like its going to be another nice C5 back on the road when you have finished, please keep the pictures coming of it and the VW's.

Retro Andy.

alexbromo

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Re: Some works before put on the road ...
« Reply #14 on: 19, September, 2010 - 21:15:37 »
Hi, if that Kenda tyre is the same as I have on my front wheel., it has a maxiximum inflation pressure of 36psi. Mine would come off the rim at 40 psi, but at 35 psi survived 2 laps of the Brooklands circuit ( at a speed a racing tortoise would have been ashamed of). I run Schwalbe rear tyres at 55psi( as my gauge won't read to the 60 psi maximum permitted). This high pressure removes the likelihood of much sidewall compliance hence reducing the tendency to roll
My Kenda tyres reports 40 psi for front and 65 for rear ...

Alex Bromo