All this because you've been riding the clutch like a grandma?!?
Seriously tho, that sucks, but at least you'll be rolling again by the weekend.
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All this because you've been riding the clutch like a grandma?!?
Seriously tho, that sucks, but at least you'll be rolling again by the weekend.
Hahahaha excessive clutch slip was a reason they gave but I don't do that!! HahaQuote:
Originally Posted by The Simps
Never mind, onwards and upwards!! I've been taking care of a few little jobs while it's been on the ramp at Ben's, I'll update in due course.
So after discussion with James @ Relentless, who has been excellent helping sort this all out, he has been in contact with AP.
They recommend that we switch to a 4 paddle, which is on order to be delivered here tomorrow and fitted.
However, on Monday when we first spotted the friction plate damage we immediately ordered another 6 paddle from AP as a direct replacement. As above I've been advised not to use it but thought I'd take a look at it as it arrived today.
My original friction plate which AP say has no design issues and the cracking is down to either something I've done or engine harmonics.
https://uploads.tapatalk-cdn.com/202...ad7f92babf.jpg
The new friction plate, same part number, totally different design..... notice the paddles are bigger, the slots end in oval shaped holes not round.
https://uploads.tapatalk-cdn.com/202...0b835a1c73.jpg
In short that's a totally different friction plate!!!
I've taken the opportunity while at Ben's to do a few little things that have been on the list for a while, cleaned all my oil lines and engine strainers, cleaned the bay, made an attempt at some front brake cooling and sorted my headlight inlet.
Brake cooling
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Cut the plates out in the guillotine and welded them up myself, as I'm now in the circle of trust, Ben lets me use the MIG!! Added some outlets and a splash of paint, these are just proof of concept so probably not the finished item.
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There's not much space in there so it's a case of best of a bad job, these tubes use a plate shaped to match the caliper bracket and act as a washer behind the brakes to knuckle bolts. Best solution we could come up with.
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Ducted using a flexi rubber ducting which is really good but doesn't contain the wire inside so if a wheel touches it then I hope it won't explode and end up in something.
Engine inlet feed
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Didn't like the way the air feed came out the headlight, looked a bit too shonky, so I set about making a headlight blank, I've aslo got a headlight sticker coming that I'll cut the hole out the middle of. Should look decent when done.
Fingers crossed we'll be back running tomorrow!!!
Sounds a bit sus to me personally, 'nothing wrong with our products despite us changing the design significantly for the same item'. There's treachery afoot me thinks :wtf:
Oohhh I do like the brake cooling, though that does look ever so much like my vacuum cleaner hose... hmmmm :dQuote:
Originally Posted by House
Busted!!!!Quote:
Originally Posted by Nova_Tek
The workshop is going to be a little bit messier from now on!!!
Friction plate arrived at 11.40am, car was driving at 4.30pm.
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Ben found an old transit 1"x23 spline input shaft. He lined it up by eye and then checked it with the input shaft and it was bang on, so on went the box. I'm shit at lining them up so let Ben's skills run free!!!
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Back in the car, everything just bolts into place no crow bar or effort needed, so easy!!
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Sorting the wiring and water hoses at the back of the block
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Boom, back together and drives really well, clutch feels totally different, bite is mid pedal travel now where as it used to be right at the top of the pedal.
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While things were apart I got the chance to investigate an annoying "ting tinging" noise like something was touching the flywheel, it happened every time I turned right only, my thoughts were starter motor gear touching the flywheel!! I was proved right, the return spring on my Brise starter motor had come off and the cog was free to flop in and out, everytime I turned right the centrifugal force pushed the cog out to touch the flywheel!!! Annoying but now solved!!
Anyway, Mallory 12th August.
:thumb:
Front bumper looks fresh!
Excellent!
I didn't realise you could get flexi pipe that didn't have the wire support - good to know.
That friction plate is massively different....
I have some spare if you want itQuote:
Originally Posted by Iain
Good effort. Lets hope for better luck this time round.
As the garage has air con I spent a few hours in there today!!
Got the Vbox installed for Mallory
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Ran the antenna up through an existing hole.
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Also added this BFO red light in the car as a low oil pressure light, might seem a bit extreme but in certain light it's hard to see the Dash2 warnings and I wanted something that would alert me and say
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"stop, bad things, worse than clutch paddles falling off, be happening"
The light is run off the ECU, set to be on when oil pressure is anywhere between -3psi and 30psi and off if above 31psi.
The idea being, if the red light comes on and I dip the clutch the ECU will turn off the engine as it's set to do so via the low oil pressure kill function.
Hopefully, I'll never have to practice this.
Last few items sorted.
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Temp cover made as I've heard that it affects gearbox temps, see how it gets on. If box temps rise then I'll look at some sort of meshing instead that will allow air to flow.
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Bit of project Binky inspired bracketry, Ben didn't like how the bleed nipple was just flapping about in the wind so he commissioned me to create a solution. It's neat enough. Will powder coat it along with the other bits once I know the brake cooling and gearbox cover plates work.
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Now this will take some explaining!!!!
Just reviewed some data from Mallory, here is a session from Iain and I overlaid, it shows where he was quicker than me, 2.362 seconds over 1 lap, his main gains were in the braking zones for turns 2 and 4, so I was able to go out and work on those corners, I'm still nervous on the brakes after my Cadwell crash so it was good to see I really need to work on it. Iain's lap is the red line and mine the blue.
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I went out in the very next session and got myself nearly half a second up on Iain by turn 4 only to loose that advantage round turn 5, I still managed to beat his quickest time but there's lots more time on the table. Iain in red again and me in blue
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I can see this being really useful and I'm looking at adding some more data logging to have even more squiggly lines to look at.
Thats pretty dang cool!
What's Delta-T?
I'm no race engineer but my understanding is the Delta T is "delta time", or you could say base/ideal/target lap time.
So in this case the delta T is Iain's lap time, which is represented by the straight red line on the graph, then my lap time is the blue squiggly line that goes + or - to the delta T.
From that you can look at the time line and see where on track either lap time makes gains or losses and then male changes.
I'll do some more screen shots a bit later when I get 5 to explain how we work out where the losses and gains translate to the track.
I will say I am not a race engineer, I literally looked at it and tried to work it out.
That makes total sense!
Mostly I look on the lateralAcc, graph, and click on the maximum button. From that I see if the setup is better I have bigger corner G-s, or if the tyre is overheated see the lower G-s.
Good shout that, corner speed/apex speed works the same way I guess. Like I say I'm new to working all this out!!Quote:
Originally Posted by _Tomiboy
I figure the biggest gains now are going to come from my driving skills, hence the use of data logging
https://photos.app.goo.gl/mPs2Giymy9yHnWTLAThe green line is with 120kg passanger. The red and blue is without passanger and the car was 30kg lighter, so 150kg lighter overall.
https://photos.app.goo.gl/itoGy6X7jTM6jz3y5
Here are the maximum values. With the red and blue I was on the limiter in 3th gear for 20m long. You can see there is not too much grip for the tires, max 1.15-1.17G, once was the peak 1.2. the longitudinal max 0,6G is jut out from the pit lane in 1th gear.
https://photos.app.goo.gl/M2mLtV8TUdBMkddy9
At the minimum value is one very important thing, Longitudinal Acc at the green is 0.7G clear sign I did not push the brake really... Next time on the red and blue aroung 1G what is ok for the R888R. Hard braking is important for the races.
https://photos.app.goo.gl/mPs2Giymy9yHnWTLA
What you can see from the graph there is more interference between the red and blue lines, and just 0.01s difference on the laptime, there is much more in the car, so I must practice more.
Pretty cool to look at Tommy. It's great to use to see where you can and cannot make up time, like you say you can see how hard you are braking and the corner speeds
Post used to get picture order for the next post
Entry speed turn 1 Our entry speeds are within 1mph and house is 0.16 seconds ahead at this point of the lap.
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Exit speed turn 1 Iain's exit speed is 3mph higher than House's and we can see that Iain has opened a gap of 0.12 of a second so just through turn 1 Iain is 0.26 quicker
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Iain braking point turn 2 at the braking point Iain's speed is 114.5mph and he has pulled another 0.08 seconds over House.
https://uploads.tapatalk-cdn.com/202...5d59dfbcfe.png
House braking point turn 2 speed is the same as iain's but braking is much earlier than Iain's and although they brake with the same force, deccel rate is the same, House brakes for longer and slows more for turn 2
https://uploads.tapatalk-cdn.com/202...731495cd4f.png
Braking point turn 3 is the same for both cars but Iaiin's speed is 6mph higher at the braking point.
https://uploads.tapatalk-cdn.com/202...d556df619c.png
Apex turn 3 iain's apex speed is 3mph higher at turn 3 and he's opened up 1.58 seconds over house.
https://uploads.tapatalk-cdn.com/202...8a02c72e36.png
Apex Speeds Turn 4 iain is faster down through turn 4 by 5mph with a lead of 2.16 seconds
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By the end of the lap Iain has pulled out 2.362 seconds and House has some work to do in the braking zone of turn 2 and down through turn 4.
Javelin sprint series went well at Cadwell Park, it was wet, no grip, broke the car on the sighting laps
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New shafts on order, in the meantime I'm back on an old shaft for Brands on Monday.
Yonkers!
You would think that would be more likely to happen in the dry with too much grip? Or was it spinning in the wet then suddenly got grip??
Good effort sir [emoji1319][emoji1319][emoji1319] haven?t seen many break like that!Quote:
Originally Posted by House
What sort of maximum speed were you doing at cadwell before the shaft went? Would like to have a go at cadwell on a track day but don?t know if I?ll be screaming it?s head off with a 4.8 CWP
Sent from my iPhone using Tapatalk
That's what I was thinking. Either that, or the shaft was on its way out already and didn't need much persuasion to break. That said, the break itself doesn't look like a typical repetitive strain crack you often see on bits that give in to repeated overload situations.Quote:
Originally Posted by The Simps
Thoughts anyone?
Well, I did the sighting laps at Cadwell it was terrible, no grip at all, and as we all know I had a little off at Cadwell so something told me (sixth sense) something wasn't right, started getting an odd misfire, so I thought as it's pissing it down I'm done, on the trailer and home.
Got home, fiddled with all the plugs in the bay and went in a quick road test, 800 yards from home, second gear straight wheels, maybe 50% throttle.....BANG snappy snap.
2 random people stopped to ask if I was ok and one of them towed me back home!! (She was a legend)
It's snapped exactly at the circlip groove, now having spoken to Berrisford he said to me they all go there as it's the weakest point, it also had a square edge groove creating right angles in the bottom of the groove, stress point!!
Other shafts of mine have also started twisting
https://uploads.tapatalk-cdn.com/202...a0fde19477.jpg
The new shafts from Berrisford have a slimmed down centre section (pics to follow) that apparently moves the stress away from the circlip groove and they'll be heat treated properly.
HHMS do it the other way, they move the circlip to the outer end of the shaft meaning no stress on the circlip groove. They also rotate the inside of the CV so the groove is on the inside, all great stuff. The only issue is that you have to use their CV's at ?128 each!!!
So I'm going with Berrisford who have an excellent rep for making shafts and we'll see what happens!!
Well at least you know where the problem/weakness is, just don't get shafted on the next set ;)
Apologies, that was bad!
On a different note, how much ground to sump clearance do you have?
No Simps.....just no.Quote:
Originally Posted by The Simps
I can measure exactly if you want? But I'm running Pace dry sump so the sump pan is half as deep as standard. The lowest point on mine is the lower strut brace. I'll have a look and try and measure. It's not a lot, maybe 90mm
PM sent [emoji6]Quote:
Originally Posted by House
Evening.
Brands today, managed a 55.79. Fastest lap I've done round there. Still more to gain, on the brakes and defo down paddock hill but had a good day and nothing passed me all day.
Enjoy my only clear lap of the day!!
https://youtu.be/jMsBExWpHw4
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For those that are interested. That 55.79 was my only clear lap of the entire day.
Shame about the shaft mate. Nothing I have seen from the regular Vauxhall world is up to the job, I had an identical failure.
Since fitting Berrisford shafts about 7 races ago had no issues at all and still dead straight. My car probably has a bit more power and a lot more grip than yours too so you're in good hands.
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I have a spare set of Berrisford ones here just in case but haven't needed them yet.
Those berrisford shafts look tasty. Definitely a worthwhile upgrade!
Thanks Craig, you defo have more power, grip and driving skill!!!
Those shafts are beautiful!! Can't wait to get mine, should be 3 weeks away.
Well my new shafts arrived and went in.
Didn't break at Brands yesterday.
Managed another 55.86 although Vbox suggests my best lap (made up of my quickest sectors) was a 55 dead.
Morning was proper Carl Fogarty and the start was delayed until 11.30am, then we predictably had 7 red flags in the first hour of running. Who'd have thought it........
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As I'm not running a thermostat I had to tape some grille up, then as it was 2 degrees and wet I taped the brake vents up too
Good day all round, had some fun, really feel like I'm understanding how the car behaves, looking forward to the JSS next year and a bit of competition.
Video incoming.
Chasing Mark Fowler in his race winning M3, was good fun for a few laps
https://youtu.be/P8OGIXFoQp4