Hear, hair to that sentiment, no pain no gain I guess, and it make the idea stealing that bit more satisfying...:dQuote:
Gotta earn the theft by wading through 300 pages of waffle.
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Hear, hair to that sentiment, no pain no gain I guess, and it make the idea stealing that bit more satisfying...:dQuote:
Gotta earn the theft by wading through 300 pages of waffle.
Do you know the measurements off the top of your head for the alternator bracket you made when you first did your bike carb conversion?
As you know just ordered my carbs so wanting to get as much as I can ready for when they turn up :)
After the distance between the centres of the Rose joints and what size rose joints if you know mate.
cheers
It was a 110-140mm turnbuckle from McGill. The piece itself ended up 42mm long and probably cut down RJs but can't remember what belt that was with.Quote:
Originally Posted by ABoresta
Brakes seem to be working OK, biased most of the way to the front mind. I went for a blast yesterday with my mate in his Nissan 350Z, so have some unnecessary pic whoring. Courtesy of him for the pics!
http://iainel.co.uk/images/gallery/M...03-2016/01.JPG
http://iainel.co.uk/images/gallery/M...03-2016/02.JPG
http://iainel.co.uk/images/gallery/M...03-2016/03.JPG
http://iainel.co.uk/images/gallery/M...03-2016/04.JPG
http://iainel.co.uk/images/gallery/M...03-2016/05.JPG
Rusty Nova & bling Jap tart, I know which I'd prefer.
Worth doing the brake upgrades then?
So far no, see how they are on track.
Oh.
Maybe i should of popped in and had a drive.
I've already told him he just needs to press the pedal harder and eventually it'll stop.
It's stopping well now. Part of it was getting used to the linear braking effort vs power compared to a servo assist.
It's the fact I've got the bias all the way forward, seems a bit pointless having an adjuster! I could try a larger cylinder again on the rear, I think they do a 0.8-something.
Interesting.
Possibly even worrying?
Iain, presumably you've got a 0.625" front master cylinder? Just wondering what the spec of your front braking system is, and cos I'm a lazy B and can't be arsed schrolling back through your thread I wondered if you could let us anoraks know the grizzly details in an easy to read summary?
For instance I know your running 4 pot front calipers but wonder what the piston size is? Also what size discs...?
Hopefully I and others can benefit from your learning process (I was almost tempted to say mistakes but that would be plain rude) :d
0.625 front, now 0.75 rear. They're Wilwood 4 pot Dynalites, with 280mm discs, rears are Corsa C single pot sliding caliper. However I've done this very crudely and not measured the piston sizes, quantities etc and purely based it on 'what others have success with'.
I've noticed the front cylinder moves quite far in comparison to the rear, I'm not sure if the sign of a good set up is similar travel on both. Who knows.
Looking at the picture of your Calipers, the pistons don't look to be overly large, so that might explain why they feel a little on the heavy side?Quote:
0.625 front, now 0.75 rear. They're Wilwood 4 pot Dynalites, with 280mm discs, rears are Corsa C single pot sliding caliper. However I've done this very crudely and not measured the piston sizes, quantities etc and purely based it on 'what others have success with'.
Hopefully the switch to a larger rear M/C will even up the bias bar a little?
That's pretty standard for a pedal box setup, especially when running a tarmac setup, presumably you've got the pedal box bias bar set up with the Bias Bar cocked such that the front brake clevis to M/C is longer than the one for the rear brakes?Quote:
I've noticed the front cylinder moves quite far in comparison to the rear, I'm not sure if the sign of a good set up is similar travel on both. Who knows.
Thus allowing the front brake cylinder to have the extra stroke that it needs to move the pistons in the calipers without risking the balance bar lever binding?
At the end of the day I suppose we are all looking for a brake pedal that provides plenty of feel (I believe the technical term is modulation?) and give us confidence in them. The problem with servo brakes is that though they provide good power, they always lack any real feel. I always remember moving a friends 911SC and only after I'd parked and got out did I realised just how good a non servo brake setup could be, driving it albeit slowly, they just worked...
I have this joy to come!
The 0.75 didn't work, it was still locking the rears on maximum front bias. There was loads of travel on the 0.625 cylinder, so either there's STILL an airlock in the cylinder somewhere, or something isn't 'matched'.
I've fitted the old rear (0.7) to the front now, and the pedal is way firmer and pedal travel is much more what I'd expect, so I'm going to go out and see if the front locks before the rears on this setup. Hockly said they ran .7 front/.75 rear so I don't think it's unusual.
Imagine your 911 mate got all the calcs and worked out the proper sizes scientifically, or had it professionally configured? That's too complicated and involved for me!
hockly told me to run a 0.7 on front and 0.75 on the rear. I guess that's pretty common on a nova with 4 pods on front and disk brakes on the rear?
Maybe, having took mine out to attempt to set it up yesterday, I had an inline adjuster wound all the way down (maximum restriction) and the bias quite far forward to stop the rears locking, and was struggling to lock the fronts with the 0.7 cylinder.
I think I must have had trapped air in the 0.625, it's the only explanation, so that's going back on with a thorough bench bleeding prior to installing.
Blimey that sounds terrible, you definitely shouldn't need an in-line adjuster on the rear brakes, after all that's the whole point of fitting a bias box.Quote:
Maybe, having took mine out to attempt to set it up yesterday, I had an inline adjuster wound all the way down (maximum restriction) and the bias quite far forward to stop the rears locking, and was struggling to lock the fronts with the 0.7 cylinder.
Hopefully the 0.0625 should give a better result?
Are you sure the bias bar isn't fouling its housing (tube) when you are leaning on the pedal? I'm a bit suspicious that the reason why the rear brakes are locking up, despite using an in-line adjuster wound all the way down, is because the side of the bias bar the rear M/C is on is fouling the back of the housing?
If your doing this all single handed, maybe you can persuade a mate/the missus to lean on the pedal while you watch what happens to the bias bar as the brake pedal is pressed.
Got my fingers crossed you can get to the bottom of the problem soon. Good luck.:thumb:
Yes sir, definitely not fouling, there's plenty of slack for it to get an angle on. Here's Harvey applying the brakes while I watch my expensive disappointment in action. Can see the front moving excessively.
https://www.youtube.com/watch?v=MEhj2oKtBl0
Well I've swapped back to the 0.625 by properly bench bleeding by hand, transferring a FULL cylinder to the car and getting fluid everywhere, and then manually and pressure bleeding through, still felt sloppy. I've then swapped to some 256 ATE calipers and it feels awful on both of them. Very soft and squishy.
Have you droiven another Vauxhall with one of these?
Mine always 'feels' rubbish until used in anger and tehn it really comes into play - with heat in the pads and the right mind-set mine is great... if I get in after a few weeks in a normal car they feel absolutely toilet!
Driven Harvey's Astra which is what convinced me I'd be OK servoless, and in turn he's driven mine with the new brakes.
I am expectinga firm pedal and to be able to lock the front wheels, especially with heat in the pads and the bias all the way forwards. I'm getting neither.
RallyDesign are swapping my 0.625 cylinder as it's the only thing left to be at fault.
Doesn't look like anything at fault in the mechanical travel of that pedal box.
Understand you CANNOT compare feel with a servo setup OR some other guys hydraulic setup that's fully bedded in.
When you're running new brakes the run in period on a lightweight car will take longer and longer and longer the bigger the disks are, calipers are then there's pad compound.
I run no servo cant remeber what my master cylinders are My brakes don't feel great at first and get a little bit better on the road, but need to drive it hard and drive the car often to get used to the sensation of no servo assistance my pedal is very firm though feels like I'm pressing a bit of 2 x 4 lol
Quote:
Originally Posted by Iain
There does look look to be a fair bit of travel on the front cylinder,but if you look at the video you posted the bias bar rocks off the rear cylinder as in the front cylinder doesn't really move until there is some resistance from the rear cylinder which would explain the rears locking however the bias bar is situated.
i would try putting the bias towards the rear then try spacing the rear cylinder away from the pedalbox and see if you can get the bias bar to stay parallel when pressing the pedal like this .when you have it operating like this then put the bias towards the front and try it .i would expect with a bit of heat to able to lock the fronts easily ,with a .625 front the pedal is not too heavy ,heavier than a servo car but too bad tbh
Oh I forgot to mention you wanna run a proportioning valve on the rear line!
I'm definitely starting to feel your pain Iain :wall: I hope the replacement M/C produces a better feeling pedal.
Nice video by the way, for a moment I though the balance bar was all askew, but then I realized it was an optical illusion due to the viewing angle, doh!
My only comment would be that I think that the bar should be skewed such that Front M/C end should be further back than the Rear M/C when the brakes pedal is 'at rest', if you see what I mean? That is to say that as you apply pedal pressure the bar will pass through being square then at maximum pressure the Front M/C will be closer than that of the Rear, clear as mud...:d
I'm just worried that the bar might be fouling the tube as max pedal pressure is reached, this would definitely NOT be a good thing as if it is, it will result in unwanted pressure being applied to the back brakes, so might (?) be the cause of the premature rear brake locking.
I'll also repeat (because I'm a pedant) that the whole purpose of fitting a Brake Bias Pedal Box like this one is to enable the proportioning valve used with a tandem M/C, to the nearest skip... That said I notice that 8vCraig has one fitted in his race car, hmm. :eek:
Well the braking woes are almost over... After a lot of bleeding attempts, a second 0.625 front cylinder, trying 256 ATE calipers and finally going back to 4 pots. I managed to get a firmer pedal in the end, somehow, who knows. I then changed the friction material up front which seems to have given it a lot more bite, and now it's stopping as it should.
Now I'm done with the brakes, I've given the interior a bit of a facelift and lost a lot of weight in the process.
Original battery location for a reminder:
http://iainel.co.uk/images/forums/NovaWIP2b/263.JPG
Odyssey PC680 in it's new bracket for size comparison:
http://iainel.co.uk/images/forums/NovaWIP2b/264.JPG
Original battery and bracketry comes in at 12.9kg. The massive +ve battery cable I used came in at a whopping 1.8kg too!!!
http://iainel.co.uk/images/forums/NovaWIP2b/265.JPG
New battery in at 6.6kg:
http://iainel.co.uk/images/forums/NovaWIP2b/266.JPG
Since the wiring is up front, I've put the battery in the passenger footwell and coupled it with moving the footrest forward due to passenger criticisms lol
http://iainel.co.uk/images/forums/NovaWIP2b/267.JPG
http://iainel.co.uk/images/forums/NovaWIP2b/268.JPG
Posh Longacre bulkhead connector fitted and new starter wire made up:
http://iainel.co.uk/images/forums/NovaWIP2b/269.JPG
http://iainel.co.uk/images/forums/NovaWIP2b/270.JPG
My old dash was incredibly ropey, several years old and sagging in the middle from hanging on the top 2 bolts and cable ties at the sides. I got a new mk2 dash, cut the sides off, welded in various brackets here and there and sent it off for flocking.
Started on the refitting:
http://iainel.co.uk/images/forums/NovaWIP2b/271.JPG
Making a carbon blank up for the headunit area:
http://iainel.co.uk/images/forums/NovaWIP2b/272.JPG
All pre-wired with plugs for easy plug and play:
http://iainel.co.uk/images/forums/NovaWIP2b/273.JPG
http://iainel.co.uk/images/forums/NovaWIP2b/274.JPG
Finished pics. It's a mid grey flocked carcass, glovebox and fusebox cover with black binnacles and I think the combo looks cracking and a nice nod to the OE grey dash.
http://iainel.co.uk/images/forums/NovaWIP2b/275.JPG
http://iainel.co.uk/images/forums/NovaWIP2b/276.JPG
Couple of trick touches most won't notice... Removed the headlight leveller as I no longer have them:
http://iainel.co.uk/images/forums/NovaWIP2b/277.JPG
EPAS sensitivity controller is hidden under here, it's actually easily accessible by hand but means I won't knock it:
http://iainel.co.uk/images/forums/NovaWIP2b/278.JPG
Brake balance adjuster for the new pedal assembly:
http://iainel.co.uk/images/forums/NovaWIP2b/279.JPG
New switch panel, just awaiting new black screws and label maker:
http://iainel.co.uk/images/forums/NovaWIP2b/280.JPG
And to stop it sagging I've welded tabs to the rollcage both sides and it's supported at the bottom, so it's very secure now:
http://iainel.co.uk/images/forums/NovaWIP2b/281.JPG
http://iainel.co.uk/images/forums/NovaWIP2b/282.JPG
Nicely done....
Is the battery mount secure enough against the footrest?
The footrest is on four M6 rivnuts to the floor and the battery cage is four M6 rivnuts to the footrest. It feels pretty secure.
Great proyect, i like the result.
Regards.
I like the dash and what you've done there. Very good.
On your Epas, did you do a 2nd mount? Or just use the first/top two?
Thanks TR2p.
It's using the bottom mount too. I think it makes use of a captive nut in the battery tray already.
I've done the same and it's double hardQuote:
Originally Posted by Iain
Love the dash colour! (And the extra touches to it)
The adventures of a shonky Nova at Donington Park on 6th May 2016, pictures and words from the days spanner monkey aka Harvey.
It all started at 8am with a fresh faced, non dripping and eager to go Nova.
http://www.em51ey.co.uk/General/Donn...92627Small.jpg
http://www.em51ey.co.uk/General/Donn...92633Small.jpg
The catering facilities were top notch and even the driver for the day was delighted with the cheap flapjack.
http://www.em51ey.co.uk/General/Donn...92708Small.jpg
There was hardly anyone there so loads of track space, zoom zoom…..and zoom.
http://www.em51ey.co.uk/General/Donn...93230Small.jpg
The sponsors loved it, BTCC here we come.
http://www.em51ey.co.uk/General/Donn...01601Small.jpg
Just chilling after a steady start. Driver telling us just how big the pizza was he ate the night before.
http://www.em51ey.co.uk/General/Donn...01612Small.jpg
Really, I thought it was built on your drive Iain!
http://www.em51ey.co.uk/General/Donn...01621Small.jpg
Cool pic time.
http://www.em51ey.co.uk/General/Donn...01651Small.jpg
Not many out there, yet another victim passed mowahahaha.
http://www.em51ey.co.uk/General/Donn...04324Small.jpg
Engine, honest it is.
http://www.em51ey.co.uk/General/Donn...05706Small.jpg
Corsa B pedal box working well finally.
http://www.em51ey.co.uk/General/Donn...05741Small.jpg
Taking a breather after yet more abuse.
http://www.em51ey.co.uk/General/Donn...05753Small.jpg
Is there anybody out there…..no
http://www.em51ey.co.uk/General/Donn...22518Small.jpg
http://www.em51ey.co.uk/General/Donn...22816Small.jpg
Pit lane action.
http://www.em51ey.co.uk/General/Donn...23027Small.jpg
http://www.em51ey.co.uk/General/Donn...23036Small.jpg
Lunchies nom nom nom.
http://www.em51ey.co.uk/General/Donn...24656Small.jpg
Part of the team are back on track.
http://www.em51ey.co.uk/General/Donn...24720Small.jpg
Rubbertastic, rear left which takes the abuse.
http://www.em51ey.co.uk/General/Donn...25114Small.jpg
Brake pad material transfer on the disk face, perfect.
http://www.em51ey.co.uk/General/Donn...25146Small.jpg
I still think it should be a Millies Cookies sticker.
http://www.em51ey.co.uk/General/Donn...25222Small.jpg
Then at 2pm we met with this chap at the bottom of Old Hairpin as it all went wrong coming through Hollywood.
http://www.em51ey.co.uk/General/Donn...35307Small.jpg
Driver not happy.
http://www.em51ey.co.uk/General/Donn...35317Small.jpg
We got a free tow back and no one hated us much…I think.
http://www.em51ey.co.uk/General/Donn...35432Small.jpg
Zooming up to McLeans.
http://www.em51ey.co.uk/General/Donn...35531Small.jpg
Down the Dunlop Straight.
http://www.em51ey.co.uk/General/Donn...35655Small.jpg
Round the Fogarty Esses.
http://www.em51ey.co.uk/General/Donn...35733Small.jpg
Into the pits for the tow of shame.
http://www.em51ey.co.uk/General/Donn...35749Small.jpg
Consolation prize of a white choc chip cookie was on offer after some epic driving.
http://www.em51ey.co.uk/General/Donn...40621Small.jpg
Brief diagnostics were required but alas, it was the end of the day for us.
http://www.em51ey.co.uk/General/Donn...41843Small.jpg
Resuscitation was attempted as the old girl has performed valiantly but all was now lost.
http://www.em51ey.co.uk/General/Donn...42200Small.jpg
Bore 4 looked a bit damp but we were left scratching our heads.
http://www.em51ey.co.uk/General/Donn...42850Small.jpg
This left a very unhappy driver as he was having so much fun as was I.
http://www.em51ey.co.uk/General/Donn...43620Small.jpg
Poor thing, all ready for the short trip home and further investigation…Iain will be along soon once the issue has been found.
http://www.em51ey.co.uk/General/Donn...50831Small.jpg
Dead.