Clutch Pedal Reduction Kit with Diaphragm Pressure Plate?
Given the mechanical characteristics of a diaphragm pressure plate, does it make any sense to use a clutch pedal kit with one? My recollection is that the clutch pedal kit provides more leverage when the pedal is fully depressed, but a diaphragm pressure plate does that anyway? Ken Given the mechanical characteristics of a diaphragm pressure plate, does it make any sense to use a clutch pedal kit with one? My recollection is that the clutch pedal kit provides more leverage when the pedal is fully depressed, but a diaphragm pressure plate does that anyway? Ken
I bet you won¹t need a clutch pedal kit if you run a diaphragm PP. I had to remove the helper spring in my 67 Mustang when I installed a diaphragm PP. Otherwise, the clutch would go all the way to the floor. On 6/1/16, 11:50 PM, "DeTomaso on behalf of Ken Green via DeTomaso" <detomaso-bounces@server.detomasolist.com on behalf of detomaso@server.detomasolist.com> wrote:
Given the mechanical characteristics of a diaphragm pressure plate, does it make any sense to use a clutch pedal kit with one? My recollection is that the clutch pedal kit provides more leverage when the pedal is fully depressed, but a diaphragm pressure plate does that anyway? Ken _______________________________________________
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My "experience" is all keyboard. As for the effect of the effort pedal reduction linkage, attached is a motion diagram plot comparing it to the original. The fast "take up" offered is during the first 1" or so of pedal travel then the change in mechanical advantage of the linkage is 7/5 during the remaining stroke. At one time I was hoping to write the force travel equation from pedal to clutch. I believe the original mechanical advantage from pedal to TOB was 12.3:1 and with the linakge 17.2:1 As for comparison of clutches, I could not find any supplier that would provide the force travel values at the throw out bearing. So if the force at full compressed at the TOB is 300#, the force at the pedal would be 24 w/o or 17 with linkage. I wish someone would post the different in force for different clutches. And what I see is another concern would be the clutch travel from engaged to released as the Pantera's exisiting only provides a vary limited travel at the TOB. I am not sure of the transaxle yoke lever ratio, but I was calculating there was only 0.46" travel at the TOB. -----Original Message----- From: DeTomaso [mailto:detomaso-bounces@server.detomasolist.com] On Behalf Of Ken Green via DeTomaso Sent: Wednesday, June 01, 2016 23:51 PM To: DeTomaso Mail List Subject: [DeTomaso] Clutch Pedal Reduction Kit with Diaphragm Pressure Plate? Given the mechanical characteristics of a diaphragm pressure plate, does it make any sense to use a clutch pedal kit with one? My recollection is that the clutch pedal kit provides more leverage when the pedal is fully depressed, but a diaphragm pressure plate does that anyway? Ken
I can give you a measured result Ken. With no kit and a dual surface Centerforce: - I don't notice it when road driving - about 20 mins of rush-hour bump&go is OK. beyond that I have to spend as much time in neutral as I can manage. Dave On 6/1/2016 8:50 PM, Ken Green via DeTomaso wrote:
Given the mechanical characteristics of a diaphragm pressure plate, does it make any sense to use a clutch pedal kit with one? My recollection is that the clutch pedal kit provides more leverage when the pedal is fully depressed, but a diaphragm pressure plate does that anyway? Ken
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I can give you a measured result Ken. With no kit and a dual surface Centerforce: - I don't notice it when road driving - about 20 mins of rush-hour bump&go is OK. beyond that I have to spend as much time in neutral as I can manage. Dave On 6/1/2016 8:50 PM, Ken Green via DeTomaso wrote: Given the mechanical characteristics of a diaphragm pressure plate, does it make any sense to use a clutch pedal kit with one? My recollection is that the clutch pedal kit provides more leverage when the pedal is fully depressed, but a diaphragm pressure plate does that anyway? Ken _______________________________________________ Detomaso Forum NO LONGER Managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list [1]DeTomaso@server.detomasolist.com [2]http://server.detomasolist.com/mailman/listinfo/detomaso To manage your subscription (change email address, unsubscribe, etc.) use the li nks above. Members who post to this list grant license to the list to forward any message p osted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of lis t messages. References 1. mailto:DeTomaso@server.detomasolist.com 2. http://server.detomasolist.com/mailman/listinfo/detomaso
participants (4)
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Dave -
Joseph F. Byrd, Jr. -
Ken Green -
Will Kooiman