foot plates - feet angles - heels and toes

Maintenance, accessories, operation. Anything to do with making your erg work.
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johnlvs2run
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foot plates - feet angles - heels and toes

Post by johnlvs2run » March 25th, 2008, 8:43 pm

I'd like to make some flat foot plates for my D, with the flex feet on top.

My idea is to either replace the top plates with flat pieces of wood, and place the flex feet on top of those, or else make flat pieces that will go over the top of the plates, again with the flex feet on top. If anyone would like to share ideas of how to do this, let me know.

Also, could someone with a model B let me know the length of the foot plates, and the distances from the top and bottom ends of the top surface of the foot plates to the floor.
bikeerg 75 5'8" 155# - 18.5 - 51.9 - 568 - 1:52.7 - 8:03.8 - 20:13.1 - 14620 - 40:58.7 - 28855 - 1:23:48.0
rowerg 56-58 5'8.5" 143# - 1:39.6 - 3:35.6 - 7:24.0 - 18:57.4 - 22:49.9 - 7793 - 38:44.7 - 1:22:48.9 - 2:58:46.2

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PaulS
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Post by PaulS » March 26th, 2008, 12:21 pm

Didn't your Model D come with "Flat footplates with Flex Feet on top of them"? :roll:

Or are you interpretting "flat" in your usual unique manner, which will require further clarification regarding what you are trying to accomplish.
Erg on,
Paul Smith
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"If you don't want to know the answer, don't ask me the question."

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Post by johnlvs2run » March 26th, 2008, 12:29 pm

Both the C and D have a raised portion at the front, that is raised up 1/4 of an inch or so above the flex feet,
and makes the base impossible to be flat.
John Rupp wrote:could someone with a model B let me know the length of the foot plates, and the distances from the top and bottom ends of the top surface of the foot plates to the floor.
Does anyone happen to have this? Thanks.
bikeerg 75 5'8" 155# - 18.5 - 51.9 - 568 - 1:52.7 - 8:03.8 - 20:13.1 - 14620 - 40:58.7 - 28855 - 1:23:48.0
rowerg 56-58 5'8.5" 143# - 1:39.6 - 3:35.6 - 7:24.0 - 18:57.4 - 22:49.9 - 7793 - 38:44.7 - 1:22:48.9 - 2:58:46.2

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PaulS
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Post by PaulS » March 26th, 2008, 3:56 pm

John Rupp wrote:Both the C and D have a raised portion at the front, that is raised up 1/4 of an inch or so above the flex feet,
and makes the base impossible to be flat.
John Rupp wrote:could someone with a model B let me know the length of the foot plates, and the distances from the top and bottom ends of the top surface of the foot plates to the floor.
Does anyone happen to have this? Thanks.
Still not sure what you are talking about. The plate looks completely flat. (the raised bit is part of the "flex foot" assembly)
Image

Yes, I have a B (or an A), even one with Flex Feet installed (On the flat wood plate), it's no flatter than on the C, D, or E. :roll:
Erg on,
Paul Smith
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"If you don't want to know the answer, don't ask me the question."

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johnlvs2run
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Post by johnlvs2run » March 26th, 2008, 5:32 pm

PaulS wrote:The plate looks completely flat. (the raised bit is part of the "flex foot" assembly)
Image
The plates on yours are different. :shock:

On my D (and previous C), the part over the flex feet is raised from 1/4 to 1/2 inch, and at an angle increasing to the front. Have you not seen this on any machines? The front portion is still raised on yours where the flex feet go underneath, but it doesn't look like very much.

On another issue it looks like your flex feet holders and foot plates are angled outward, or is that just the angle of the image? The foot plates on mine are straight.

The foot plates on my model B were entirely flat.
bikeerg 75 5'8" 155# - 18.5 - 51.9 - 568 - 1:52.7 - 8:03.8 - 20:13.1 - 14620 - 40:58.7 - 28855 - 1:23:48.0
rowerg 56-58 5'8.5" 143# - 1:39.6 - 3:35.6 - 7:24.0 - 18:57.4 - 22:49.9 - 7793 - 38:44.7 - 1:22:48.9 - 2:58:46.2

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Post by PaulS » March 26th, 2008, 7:05 pm

John Rupp wrote:
PaulS wrote:The plate looks completely flat. (the raised bit is part of the "flex foot" assembly)
Image
The plates on yours are different. :shock:

On my D (and previous C), the part over the flex feet is raised from 1/4 to 1/2 inch, and at an angle increasing to the front. Have you not seen this on any machines? The front portion is still raised on yours where the flex feet go underneath, but it doesn't look like very much.

On another issue it looks like your flex feet holders and foot plates are angled outward, or is that just the angle of the image? The foot plates on mine are straight.

The foot plates on my model B were entirely flat.
Different from what? They are identical to every C that I've seen (Probably somewhere in the 100+ range), The same as the Early Model D's, and didn't change until the newest version of the D and E.

No angle out, just an illusion of perspective in the photograph.

The Model B did have completely flat wood footplates, but installing a flex foot to them will end up exactly like what is seen in the picture. (Well, the new flex foot has a rough surface instead of smooth, but basically the same. It may even have a solid base plate that is part of the molding, I remember installing a replacement unit that hd some double sided adhesive along with the screws for the bit that extended under the heel section.)
Erg on,
Paul Smith
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"If you don't want to know the answer, don't ask me the question."

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Post by johnlvs2run » March 26th, 2008, 9:54 pm

I've had a model C that was made in 2000, and two model D's (counting replacement front) that were made within the last 18 months, and all three had the raised protrusion in the front, nothing at all like your photo.
It may even have a solid base plate that is part of the molding
The front protrusions that are over the flex feet, are molded with the rest of the foot plates, and the plates are hollow underneath them. Are the foot plates solid under the flex foot covers on yours?

I didn't have flex feet on the B, though the heel part would have been nice.
bikeerg 75 5'8" 155# - 18.5 - 51.9 - 568 - 1:52.7 - 8:03.8 - 20:13.1 - 14620 - 40:58.7 - 28855 - 1:23:48.0
rowerg 56-58 5'8.5" 143# - 1:39.6 - 3:35.6 - 7:24.0 - 18:57.4 - 22:49.9 - 7793 - 38:44.7 - 1:22:48.9 - 2:58:46.2

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c2jonw
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Post by c2jonw » March 27th, 2008, 8:12 am

John The wooden footplates measured 13" long and 5" wide. On a Model B the underside of the bottom edge was 2.5 inches above the floor and the underside of the top edge was 11 inches above the floor.
I'm having trouble with the difference you're describing in your footplates. How about a pic? C2JonW
73 year old grandpa living in Waterbury Center, Vermont, USA
Concept2 employee 1980-2018! and what a long, strange trip it's been......

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Post by jmb » March 27th, 2008, 10:47 am

FWIW, I just got a Model E earlier this week, and the foot plates are exactly as John describes. There is a raised part up near the front of your foot with a slot beneath for the flex foot thing to slip through.

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Post by PaulS » March 27th, 2008, 10:52 am

jmb wrote:FWIW, I just got a Model E earlier this week, and the foot plates are exactly as John describes. There is a raised part up near the front of your foot with a slot beneath for the flex foot thing to slip through.
Sorry but IAWM, you are desscribing a part of the Flex Foot Assembly. (which has been torturously mentioned several times already.) :roll:

The E has always had the newer type footplates (Plastic molded parts, rather than Metal), but the whole flex foot assembly could be removed and would leave a flat surface if that were done.
Erg on,
Paul Smith
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"If you don't want to know the answer, don't ask me the question."

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angle of foot plates

Post by johnlvs2run » March 27th, 2008, 11:09 am

Jmb,
Thank you for confirming.

Jon,
Thanks for the measurements. I will see about taking a photo.
However, it looks like this type is still being produced and in stock.

Based on the measurements, and calculation of the rise over run, the slopes and angles of the foot plates are as follows.

Slope (grade)
65.4% - model B
70% - entire length of model D foot plates, without flex feet
73% - used portion of model D flex feet with protrusions

Angle of foot plates
40.8 degrees - model B
44.5 degrees - entire length of model D foot plates, without flex feet
47.0 degrees - used portion of model D flex feet with protrusions
bikeerg 75 5'8" 155# - 18.5 - 51.9 - 568 - 1:52.7 - 8:03.8 - 20:13.1 - 14620 - 40:58.7 - 28855 - 1:23:48.0
rowerg 56-58 5'8.5" 143# - 1:39.6 - 3:35.6 - 7:24.0 - 18:57.4 - 22:49.9 - 7793 - 38:44.7 - 1:22:48.9 - 2:58:46.2

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johnlvs2run
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Post by johnlvs2run » March 27th, 2008, 11:16 am

PaulS wrote:The E has always had the newer type footplates (Plastic molded parts, rather than Metal), but the whole flex foot assembly could be removed and would leave a flat surface if that were done.
That is not the same.

If the flex feet and protrusions were removed, there would be a big hole there and not a flat surface.
bikeerg 75 5'8" 155# - 18.5 - 51.9 - 568 - 1:52.7 - 8:03.8 - 20:13.1 - 14620 - 40:58.7 - 28855 - 1:23:48.0
rowerg 56-58 5'8.5" 143# - 1:39.6 - 3:35.6 - 7:24.0 - 18:57.4 - 22:49.9 - 7793 - 38:44.7 - 1:22:48.9 - 2:58:46.2

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Post by johnlvs2run » March 27th, 2008, 12:12 pm

c2jonw wrote:I'm having trouble with the difference you're describing in your footplates. How about a pic? C2JonW
This is from the C2 online schematic.

Image

The foot plate is hollow underneath the protrusion.

Larger photo
http://i2.photobucket.com/albums/y41/jo ... ates1a.jpg
bikeerg 75 5'8" 155# - 18.5 - 51.9 - 568 - 1:52.7 - 8:03.8 - 20:13.1 - 14620 - 40:58.7 - 28855 - 1:23:48.0
rowerg 56-58 5'8.5" 143# - 1:39.6 - 3:35.6 - 7:24.0 - 18:57.4 - 22:49.9 - 7793 - 38:44.7 - 1:22:48.9 - 2:58:46.2

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Post by PaulS » March 27th, 2008, 2:46 pm

John Rupp wrote:
PaulS wrote:The E has always had the newer type footplates (Plastic molded parts, rather than Metal), but the whole flex foot assembly could be removed and would leave a flat surface if that were done.
That is not the same.

If the flex feet and protrusions were removed, there would be a big hole there and not a flat surface.
Ah yes, that is correct, the top plate is now a molded unit with the new style footrests.

Still, what does that have to do with the older metal foot plates that were originally being discussed?

The various Flex feet pieces can be seen here https://www2.concept2.com/VIA/index.jsp

The older style, as pictured above from my site, do not look to be available any longer.
Erg on,
Paul Smith
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"If you don't want to know the answer, don't ask me the question."

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Post by c2jonw » March 28th, 2008, 12:43 pm

I just knew John's 40.8 degrees for the B footplate sounded funny so I checked the measurement a little more carefully (the machine is actually hanging up on a wall in out workout room) and came up with a difference of 8 7/8" between the top and bottom of the B footplate, which is about 43 degrees to the floor.
Also note that we've always put a 3 degree toe-out into the flex feet (models C,D,E) or a 6 degree included angle. C2JonW
73 year old grandpa living in Waterbury Center, Vermont, USA
Concept2 employee 1980-2018! and what a long, strange trip it's been......

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