Speed Six clutch options
Discussion
Hi Morinicorse
Another T350T owner I see. Do you have this fitted to your own car? What mods required? I'm not sure how suitable a motorsport clutch is for city/ road use.
I thought the clutch finger problem was more to do with the slave cylinder rubbing on the fingers and wearing them. I'm considering changing the slave to a Tilton.
Another T350T owner I see. Do you have this fitted to your own car? What mods required? I'm not sure how suitable a motorsport clutch is for city/ road use.
I thought the clutch finger problem was more to do with the slave cylinder rubbing on the fingers and wearing them. I'm considering changing the slave to a Tilton.
non_linear said:
Hi Morinicorse
Another T350T owner I see. Do you have this fitted to your own car? What mods required? I'm not sure how suitable a motorsport clutch is for city/ road use.
I thought the clutch finger problem was more to do with the slave cylinder rubbing on the fingers and wearing them. I'm considering changing the slave to a Tilton.
The butterflies and fingers are different parts of the clutch. The fingers breaking is at least partly down to setup and the slave travelling too far, overstressing the fingers on the diaghram. I also think the release bearing may be the wrong size, based on AP's technical drawings of the clutch type. Another T350T owner I see. Do you have this fitted to your own car? What mods required? I'm not sure how suitable a motorsport clutch is for city/ road use.
I thought the clutch finger problem was more to do with the slave cylinder rubbing on the fingers and wearing them. I'm considering changing the slave to a Tilton.
Just an observation.
The edge of a few of the fingers are also thinning.
That’s usually a sign of a seized thrust bearing or pressure still being applied when clutch is fully up causing the bearing to spin on those fingers.
My Chim clutch fingers had all but disappeared and only 4 fingers were intact enough to get me down the motorway 125 miles before Peter of former Tvr fame replaced the clutch for me.
Mine was most likely caused from racing starts at a drag strip. Overheated the thrust bearing and siezed from intense heat and simply ground about 5 mm off all fingers until nothing was left other than about 1/2 mm on about 4 fingers.
In my case I overheated the clutch from to much abuse rather than the clutch being at fault so it’s an extreme case but just shows what can happen when one part fails or clutch isn’t set up well.
The edge of a few of the fingers are also thinning.
That’s usually a sign of a seized thrust bearing or pressure still being applied when clutch is fully up causing the bearing to spin on those fingers.
My Chim clutch fingers had all but disappeared and only 4 fingers were intact enough to get me down the motorway 125 miles before Peter of former Tvr fame replaced the clutch for me.
Mine was most likely caused from racing starts at a drag strip. Overheated the thrust bearing and siezed from intense heat and simply ground about 5 mm off all fingers until nothing was left other than about 1/2 mm on about 4 fingers.
In my case I overheated the clutch from to much abuse rather than the clutch being at fault so it’s an extreme case but just shows what can happen when one part fails or clutch isn’t set up well.
Edited by Classic Chim on Tuesday 5th March 18:30
non_linear said:
Ouch. Did you establish what caused the failure?
No idea. The specialist suggested it might have been worsened by sitting in traffic for long periods with the clutch depressed - not by me, it should be said !What I do know is that the clutch became an order of magnitude lighter once it was replaced, likewise the gear shifting.
Classic Chim said:
Just an observation.
The edge of a few of the fingers are also thinning.
That’s usually a sign of a seized thrust bearing or pressure still being applied when clutch is fully up causing the bearing to spin on those fingers.
I've never been one for riding a clutch, nor sitting in traffic for long periods with the pedal depressed.The edge of a few of the fingers are also thinning.
That’s usually a sign of a seized thrust bearing or pressure still being applied when clutch is fully up causing the bearing to spin on those fingers.
The previous clutch was inherited and I had no idea of its condition - it may well have been on its last legs anyway.
Now it's had a new one fitted, I'll be interested to see how it does over the [hopefully] years to come.
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