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When hot, then the ally case will expand more than the steel diff sat in it (almost exactly twice as much in fact), so surely it will get looser not tighter when hot?
All sorts
When James bonnet attacked me
It did sound painfull, 10/10 for manliness ;-)
Moments before this I was looking at the back of the gearbox and that bonnet would of swallowed me lol
na they need a clearance when cold
Jamie86
ClioSport Club Member
RS175,595,205gti,172
I was expecting laughter! Haha
Another name to a face as well
No worries James, you need a lighter bonnet though!
As Chip and Fred say it must be the way the diff has been installed/shimmed
Haha I've decided i'm not changing anything else on the car unless it improves reliability so lightweight bonnet will have to wait! Got to sort engine and gearbox as the priority
Shimming is done to set the preload on the bearings so when cold the diff bearings have no clearance and the bearings 'drag'.
They are set that way so when the gearbox casing expands when the gearbox is up to tempature the diff bearings (and other bearing) have the correct clearance and preload to control the gear thrust loads.
If the gearbox is getting too hot you can finish up with not enough/any preload and the gears and cwp can move hammering their bearing housings and the gearbox casing, that is why many race cars run gearbox coolers, especially if extra air cannot be ducted to the gearbox.
Steve
NorthloopCup
ClioSport Moderator
Lol!
Didn't James say his gearbox oil was getting way too hot?
I know a few lads that have fitted gearbox oil coolers to their race cars
a clearance? You mean to actually be a loose fit?
IME they need quite the opposite, they need preload!
Can send you the gearbox manual with the procedure in if you like. PM me your e-mail address.
Yes I thought the same when I watched the video back but i'm sure I tried it on Friday and it didn't work too well, my engine has a very small window of power so have to do alot of gear changing.
When do they go on sale?
As Jamie says I was very impressed. On the test day the car was turning in so much better that I kept hitting the marker posts on apexs as I just wasn't expecting it. If you look at my quali lap that was a 1:59.4 there was a lot of time left on the table (missed apex at old hall, poor entry to cascades, very slow and wrong gear through shell oils, driving like a pansy into Druids and braking too early for the final corner) the could of done a low 58 and that I'm sure of. Last year I was doing 2.02's but a few other bits have changed too.
I need to find a bit of time to bash through the data properly (hopefully this afternoon) and then I think we are good to goWhen do they go on sale?
in 8 years of doing JC5's mate i haven't had one come back yet
TBH im not quite sure how if that involves fitting a lot of grippers and you think that when ally expands with steel in it that it gets tighter not looser!
Or do you farm the work out to someone else rather than do it personally yourself anyway? (in which case all that matters it that they know what they are doing not that you do of course!)
Not what i want to hear just after fitting a Quaife lol
Things are looking on track for Donington! Collected a box yesterday so that's ready to fit. I will either get my gripper built into another casing over winter by Gripper themselves or sell the diff on separately. I just needed a quick solution so managed to source another box with a diff in. Fred has sorted the bits for the engine (thankfully doesn't need many parts or much time) so hopefully I can sort that early next week. Car back together by the end of next week which will give me 3 non working days to get the geo done, mapping and a little shakedown test somewhere before Donington. 16 days to go!
Massive thanks to everyone who has offered me parts/help to get me back out there! Fingers crossed for a good weekend at Donington
Massive thanks to everyone who has offered me parts/help to get me back out there! Fingers crossed for a good weekend at Donington
Megane r26
Cracking news James, good to here that's its gonna be back out for donnington. Me and Marc were saying how we'd be up there. (prob all weekend knowing me as I'm 5 minutes away lol)
stop messing around and get it tested!
NorthloopCup
ClioSport Moderator
For those interested in the hubs
http://www.cliosport.net/forum/showthread.php?717989-Roll-centre-bump-steer-corrector-hubs
http://www.cliosport.net/forum/showthread.php?717989-Roll-centre-bump-steer-corrector-hubs
NorthloopCup
ClioSport Moderator
Well you know where to put your name down mate!So tempted to get a set just in case
Cub.
ClioSport Moderator
Good news on Donny James.
Mark / James - i'd snap the hubs up tomorrow, except after moving house and saving for ITBs...I am broke
I'll have a set in 6 months. Pllleeeaassseee still be making them.
Mark / James - i'd snap the hubs up tomorrow, except after moving house and saving for ITBs...I am broke
I'll have a set in 6 months. Pllleeeaassseee still be making them.
182cup & 172 racecar
Become a member then.
Adam loves me, hehe
