08-17-2020, 02:24 PM | #1 |
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Pressure Plate
Wondering which is the superior design....9" '34 Sedan - Street
#1 or #2
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The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 |
08-17-2020, 02:48 PM | #2 |
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Re: Pressure Plate
I ordered a replacement clutch from RAM and they sent me a three finger design (like number two). I believe the original clutches were three finger design, but I can't say that for sure.
The three finger design uses the centrifical force of the spinning clutch to add pressure to the pressure plate - as the engine speeds up, it pushes down harder (you can see the weights in your picture). My upgraded engine will use a diaphragm style of clutch (sort of like your picture #1, but with fingers all the way around). Apparently they are easier on your left leg. |
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08-17-2020, 03:14 PM | #3 |
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Re: Pressure Plate
Won't it depend on which flywheel you have?
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08-17-2020, 03:17 PM | #4 |
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Re: Pressure Plate
Never saw one like #1.
Stick with #2. |
08-17-2020, 03:39 PM | #5 |
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Re: Pressure Plate
#1's started with 29 A's, went thru 34. 28 A's were the multi disk things the early racer's liked
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08-18-2020, 02:36 PM | #6 |
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Re: Pressure Plate
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#1 is for a RECESSED / STEPPED FLYWHEEL #2 is for a FLAT, NON-RECESSED STYLE FLYWHEEL
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The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 Last edited by petehoovie; 08-18-2020 at 03:34 PM. |
08-18-2020, 03:47 PM | #7 |
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Re: Pressure Plate
That is correct. Ideally do to design, weight and force needed to actuate the clutch the #2 in your photos (35-up design) would be ideal. But if your 34 has the original flywheel it will take the other.
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08-18-2020, 04:31 PM | #8 |
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Re: Pressure Plate
Thanks for your reply, Mike. I won't know what flywheel I have until I pull the tranny - my flywheel could have been replace sometime in the past. I'm thinking that if I do have an original recessed/stepped flywheel, I would be better off replacing it with a flat non-recessed style. Am I correct in assuming the original flywheel is strictly for a 9 inch clutch and that the 35-up flywheel will accommodate a 10-10 1/2 inch clutch?
Do you sell a kit that includes the 10-10 1/2 inch flywheel with ring gear, clutch disc and pressure plate?
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The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 |
08-18-2020, 04:54 PM | #9 |
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Re: Pressure Plate
The Long style applies more pressure to the clutch plate as RPM increases due to the fly weights, it is a much better pressure plate than the Borg Beck.
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08-18-2020, 05:28 PM | #10 | |
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Re: Pressure Plate
Quote:
We sell clutch kits but in terms of flywheels, all I would have are used ones Last edited by 35fordtn; 08-18-2020 at 08:13 PM. |
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08-18-2020, 07:26 PM | #11 |
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Re: Pressure Plate
Today I removed the clutch from my 1934 ton and a half truck. It has the Borg & Beck style with 6 fingers (#1). The plate measures 10". Green book tells me this was truck only as is the flywheel. I haven't looked for a replacement as yet. I
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