View Full Version : Corsa B brake pedal info
So then, whats the score with fitting the corsa B brake pedal where the novas battery lives?
Any particular M/C type prefered/what strengthening needs doing etc....
cut out the plate from the corsa, and weld into the battery tray in the right position.
and then i believe you cut and shut the pedal to make it straighter.
and MC wise i think they are all the same...
i have a full pedal setup/mc etc here, £20 posted. youd just need the plate.
corsa m/c only has 2 brake lines instead of the novas 4 as well so need to sort that, i have a bias valve on mine to keep the rears from locking up
The plate people refer to just unbolts. CG didnt strengthen his at all but regretted it. Wouldnt take much to make it stronger.
Pedal needs to be shortend and the bend needs to be cut out iirc.
As said you need to run new lines, eather a adjustable bias valve or a (or a pair as per corsas) of inline reducer.
Need to make a bracket for the clutch pedal too. Again, not hard.
ahh if it unbolts i will have the plate too. pm me stu my love... lol
hmmm for the faff, I might look at a pedal box lol
http://img.photobucket.com/albums/v11/CorsaNova/NovaSaloon/utf-8BSU1HMDA0NzktMjAxMDA1MTUtMT-1.jpg
Colin cut that out for mine, never used it as I ended up buying an OBP pedal box, so still have the plate and servo/pedal.
id be talking to obp mate....
Especially as you'll probably end up buying a bias box to go on the servo and that's £140-£170 alone, bias setup comes on the obp pedal kit.
poxy work firewall :( cant get on the obp site :( boooo
iirc the cable clutch/cable throttle + bias box with MC's is something like £200ish isnt it? (not nova specific version)
OBP0012 is £234.85 plus VAT
All In 1 Cable With Bias Bar, 2 x M/Cyls
compbrake are cheaper stuart ;)
ok I can get on the compbrake site.... I now have the horn lol.
ok I can get on the compbrake site.... I now have the horn lol.
;)
just ordered mine so when it gets here ill get you some decent pics and see how good it is
what type have you gone for?
the universal floor mounted one - http://compbrake.co.uk/shop/popup_image.php?pID=3621
the universal floor mounted one - http://compbrake.co.uk/shop/popup_image.php?pID=3621
perfick ;)
we have a search function on the forum :p
craig green
21-09-10, 08:14 PM
^ LOL @ the above.
I doidnt regret not strengthening the tray area, but when exerting full force on the pedal, you could see a slight movement of the reservoir cap with the bonnet up. Realistically you wouldnt brake that hard IMO when on the move.
The Corsa runs a 2 port MC due to the ABS, but a regular Nova 4 port MC is the same fitting save for the upright corsa reservoir which will just clip on.
The main fabrication is in the clutch pedal pivot tbh.
mk1nova_rich
21-09-10, 08:17 PM
^ LOL @ the above.
I doidnt regret not strengthening the tray area, but when exerting full force on the pedal, you could see a slight movement of the reservoir cap with the bonnet up. Realistically you wouldnt brake that hard IMO when on the move.
The Corsa runs a 2 port MC due to the ABS, but a regular Nova 4 port MC is the same fitting save for the upright corsa reservoir which will just clip on.
The main fabrication is in the clutch pedal pivot tbh.
As above cutting the hole and strengthening the battery tray is easy but some thought needs to go into making a decent support for the clutch pedal as it runs on the same pin as the brake pedal
craig green
21-09-10, 08:22 PM
The battery tray platform needs to be braced in an L-shaped fashion into the bulkhead IMO, doing it neatly would be a bit of a head scratcher IMO. Do-able though.
The existing Nova brake pedal, shortened & upturned with a section welded on is how I created the clutch support.
mk1nova_rich
21-09-10, 08:27 PM
i cut the pivot pin down and bolted the main bracket back up then created a bracket to weld on the other side of the pivot pin. Needs tacking to the underside of the bulkhead though. I strengthened my battery tray by simply welding a plate over the battery tray slightly bigger than the plate that is fitted to to the Corsa pedal assembly. Will try get some pics when its not dark
Will await what Damper has to say about his pedal box..
I copied someone elses on here to brace the pedal a bit more. Count Vaux Alot maybe?
http://iainel.co.uk/images/forums/NovaWIP2/517.JPG
http://iainel.co.uk/images/forums/NovaWIP2/518.JPG
Welding the rear of the Nova bracing to the Corsa stuff it braces it against the bulkhead so won't flex the battery tray.
Welded in the unboltable Corsa tray to the Nova:
http://iainel.co.uk/images/forums/NovaWIP2/744.JPG
Draper that floor mounted pedal box looks awesome! Look forward to some pics.
i wouldnt cut and weld the pedal, cut and weld the bracket instead,
otherwise your clutch and brake will be on completely different arcs
oh and as for the compbrake pedal box, ive just spent the last 2 days buggering around trying to get mine sorted.
oh and if you shorten the bracket, then all you need to do is straighten the pedal - and it will be the right length!
Would the arc difference really be noticable, since the brake pedal only goes down a bit and the clutch goes down a long way?
How do you shorten the bracket and leave the pedal unwelded? As the servo push bit sticks down a fair way.
i'll get some pics,
you need to shorten the push rod from the servo too.
The reason I altered the pivot point is because i left foot brake a lot,
so swapping from clutch/brake etc they need to be on a similar arc.
Plus if you shorten the pedal you are altering the pedal ratio which isnt ideal.
mk1nova_rich
22-09-10, 07:09 PM
Cheers for the info stt, given you some rep :) i will have to look at my setup and adjust as necessary
Sorry about the quality of my pic but i couldnt find the camera so the phone had to do!
If you compare my pedal (im not saying its perfect) the pivot of the brake pedal sits a lot more closer to that of the clutch pedal, as on the 'cut pedal' method the pivot sits lower and further back into the cabin
and my pedal ratio is unaltered
My pedal
http://img543.imageshack.us/img543/2120/pedalpivots.jpg
'Cut pedal method'
http://iainel.co.uk/images/forums/NovaWIP2/518.JPG
oh and ive somehow ballsed up uploading the photo so its rotated the wrong way!
That does look pretty good :) Will see if I have any problems with the pedal chopped method when I get it on the road.
the nova battery try isnt a flat surface,
would it not be better to cut out one big rectangle then plate the hole with some thicker sheet metal to reduce the flex
then cut the hole for the servo in the new flat sheet
also the corsa mounting plate holds water maybe cut the edges off so its a flat square an weld it in to position
The Corsa runs a 2 port MC due to the ABS, but a regular Nova 4 port MC is the same fitting save for the upright corsa reservoir which will just clip on.
Handy snippet of info there, so if your staying rear drums thats ideal then. Altho if your going rear disc's a standard Corsa MC would be better IMO.
craig green
24-09-10, 09:59 PM
Yeah, if you want to retain the same brake 'spec' as the base Nova but lose the transfer bar & do the Corsa pedal, you don't have to totally redesign the fluid circuit. I think the upright reservoir will need a cable tie to keep it on the M/C where the Corsa's M/C has a little lug for it to locate against.
craig green
24-09-10, 10:01 PM
the nova battery try isnt a flat surface,
would it not be better to cut out one big rectangle then plate the hole with some thicker sheet metal to reduce the flex
then cut the hole for the servo in the new flat sheet
also the corsa mounting plate holds water maybe cut the edges off so its a flat square an weld it in to position
The profile in the battery tray actually suits the Corsa pedal. All will become clear if you attempt it, but it's like GM almost thought about relocating it there when they made the Corsa pedal. In the ideal position, a recess in the pedal lines up with a channel in the tray panel.
As for the pedal axis.... You use different feet on the pedals anyway. so I fail to see that you would sense a differing pivot point. I didnt.
[this is where Si says he left foot brakes!] lol
^thats where Im at with the POS Corsa Ive got now, being as its got ABS Ill be keeping the OE 2port MC, T'ing front line for both calipers, other line is going in car to bias valve, handbrake MC then T'ing in the boot for rear disc's.
Complete opposite on a Corsa compared to a Nova, which is ironic being as the Corsa uses a simple pedal setup to start with :S
The reason I altered the pivot point is because i left foot brake a lot,
.
He already did! lol
^thats where Im at with the POS Corsa Ive got now, being as its got ABS Ill be keeping the OE 2port MC, T'ing front line for both calipers, other line is going in car to bias valve, handbrake MC then T'ing in the boot for rear disc's.
Complete opposite on a Corsa compared to a Nova, which is ironic being as the Corsa uses a simple pedal setup to start with :S
Non-ABS corsas have the 2 outlet MC too, have a splitter on the blukhead near the battery tray.
Non-ABS corsas have the 2 outlet MC too, have a splitter on the blukhead near the battery tray.
Yea a know, all my other Corsa had them, Ill be retaining one of the splitters but im sure there the wrong fitting for aeroquip hoses :wtf:
MARTIN KELSON
24-09-10, 10:11 PM
As for the pedal axis.... You use different feet on the pedals anyway. so I fail to see that you would sense a differing pivot point. I didnt.
lol
If you cut the pedal down you will alter pedal ratio.
This is very important as the lower the ratio the less force is inserted into the braking system when he hit the middle pedal.
Read this: http://www.rallydesign.co.uk/pedalratio.php
When i fitted my pedal box my brakes were crap. when reading above and working out pedal ratios i realised why.
moving the pivot point on the pedal made so much difference it was like day & night
Be careful cutting the pedal down, if the ratio is too low your barkes will be crap :(
craig green
24-09-10, 10:18 PM
I dont disagree with the above. But I do know that my Nova with 288's (std GM pads & discs) with the std Corsa M/C had awesome stopping power, very noticeable when using other peoples modern cars, where I found the brakes lacking in comparison. Again I appreciate a Nova is lightweight.
[quote=craig green]The profile in the battery tray actually suits the Corsa pedal. All will become clear if you attempt it, but it's like GM almost thought about relocating it there when they made the Corsa pedal. In the ideal position, a recess in the pedal lines up with a channel in the tray panel.
i ve done mine different
here is a pic
http://img543.imageshack.us/img543/6231/photo0793a.th.jpg (http://img543.imageshack.us/i/photo0793a.jpg/)
Uploaded with ImageShack.us (http://imageshack.us)
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