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hex entry at the back of pedal
Today I replaced the pedals on a modern bike
with regular ones, which are just commodity items from the hardware store. The modern pedals are too short and, without using such shoes, the interface to fixate them becomes an uncomfortable blob under the foot. Anyway first thing I noticed was an entry for a hex key at the back of the pedal "screw block" (?) I removed the pedals just like a would with the single speed, old steel bikes, i.e. a long pipe, a 15mm wrench, a string to hold the crank to the chainstay, CRC 5-56 (probably not needed even), left pedal LT, right pedal regular, and so very little force needed for the pedal to come loose. So what is the reason for the hex entry and when do you use it? BTW does anyone have an image with pedal parts and terminology? I image googled but didn't find anything to that end. -- underground experts united http://user.it.uu.se/~embe8573 |
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#2
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hex entry at the back of pedal
On 9/29/2018 12:59 PM, Emanuel Berg wrote:
Today I replaced the pedals on a modern bike with regular ones, which are just commodity items from the hardware store. The modern pedals are too short and, without using such shoes, the interface to fixate them becomes an uncomfortable blob under the foot. Anyway first thing I noticed was an entry for a hex key at the back of the pedal "screw block" (?) I removed the pedals just like a would with the single speed, old steel bikes, i.e. a long pipe, a 15mm wrench, a string to hold the crank to the chainstay, CRC 5-56 (probably not needed even), left pedal LT, right pedal regular, and so very little force needed for the pedal to come loose. So what is the reason for the hex entry and when do you use it? BTW does anyone have an image with pedal parts and terminology? I image googled but didn't find anything to that end. Pedal spindle (or axle - people use both terms) with allen broach: https://outdoorgearlab-mvnab3pwrvp3t...46_3693_XL.jpg offers faster assembly: http://i.ebayimg.com/00/$%28KGrHqZ,!lIE2EP64yPuBNhl+JMIDw~~_35.JPG?set_id= 8800005007 Fully tighten, or break free to remove, with 15mm pedal wrench. Some pedals omit the wrench flats and have an 8mm allen broach only on the inside. -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#3
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hex entry at the back of pedal
AMuzi wrote:
Pedal spindle (or axle - people use both terms) with allen broach: https://outdoorgearlab-mvnab3pwrvp3t...46_3693_XL.jpg offers faster assembly: http://i.ebayimg.com/00/$%28KGrHqZ,!lIE2EP64yPuBNhl+JMIDw~~_35.JPG?set_id= 8800005007 Fully tighten, or break free to remove, with 15mm pedal wrench. Of course, that makes sense! Thanks! -- underground experts united http://user.it.uu.se/~embe8573 |
#4
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hex entry at the back of pedal
On Saturday, September 29, 2018 at 11:11:58 AM UTC-7, AMuzi wrote:
On 9/29/2018 12:59 PM, Emanuel Berg wrote: Today I replaced the pedals on a modern bike with regular ones, which are just commodity items from the hardware store. The modern pedals are too short and, without using such shoes, the interface to fixate them becomes an uncomfortable blob under the foot. Anyway first thing I noticed was an entry for a hex key at the back of the pedal "screw block" (?) I removed the pedals just like a would with the single speed, old steel bikes, i.e. a long pipe, a 15mm wrench, a string to hold the crank to the chainstay, CRC 5-56 (probably not needed even), left pedal LT, right pedal regular, and so very little force needed for the pedal to come loose. So what is the reason for the hex entry and when do you use it? BTW does anyone have an image with pedal parts and terminology? I image googled but didn't find anything to that end. Pedal spindle (or axle - people use both terms) with allen broach: https://outdoorgearlab-mvnab3pwrvp3t...46_3693_XL.jpg offers faster assembly: http://i.ebayimg.com/00/$%28KGrHqZ,!lIE2EP64yPuBNhl+JMIDw~~_35.JPG?set_id= 8800005007 Fully tighten, or break free to remove, with 15mm pedal wrench. Some pedals omit the wrench flats and have an 8mm allen broach only on the inside. Which I consider to be a huge step backwards. It's like putting the zipper pull for your fly on the inside -- or putting shoe laces under the tongue. -- Jay Beattie. |
#5
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hex entry at the back of pedal
On 2018-09-29 11:12, AMuzi wrote:
On 9/29/2018 12:59 PM, Emanuel Berg wrote: Today I replaced the pedals on a modern bike with regular ones, which are just commodity items from the hardware store. The modern pedals are too short and, without using such shoes, the interface to fixate them becomes an uncomfortable blob under the foot. You aren't supposed to ride click pedals with regular shoes :-) Anyway first thing I noticed was an entry for a hex key at the back of the pedal "screw block" (?) I removed the pedals just like a would with the single speed, old steel bikes, i.e. a long pipe, a 15mm wrench, a string to hold the crank to the chainstay, CRC 5-56 (probably not needed even), left pedal LT, right pedal regular, and so very little force needed for the pedal to come loose. So what is the reason for the hex entry and when do you use it? BTW does anyone have an image with pedal parts and terminology? I image googled but didn't find anything to that end. Pedal spindle (or axle - people use both terms) with allen broach: https://outdoorgearlab-mvnab3pwrvp3t...46_3693_XL.jpg offers faster assembly: http://i.ebayimg.com/00/$%28KGrHqZ,!lIE2EP64yPuBNhl+JMIDw~~_35.JPG?set_id= 8800005007 Or use a power drill with an allen bit in there, faster. We even use a power drill to make bread dough. Fully tighten, or break free to remove, with 15mm pedal wrench. Some pedals omit the wrench flats and have an 8mm allen broach only on the inside. That sounds scary, I'd never buy those. 8mm ist too wimpy for a nice tight fit. -- Regards, Joerg http://www.analogconsultants.com/ |
#6
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hex entry at the back of pedal
On Saturday, September 29, 2018 at 12:36:21 PM UTC-7, Joerg wrote:
On 2018-09-29 11:12, AMuzi wrote: On 9/29/2018 12:59 PM, Emanuel Berg wrote: Today I replaced the pedals on a modern bike with regular ones, which are just commodity items from the hardware store. The modern pedals are too short and, without using such shoes, the interface to fixate them becomes an uncomfortable blob under the foot. You aren't supposed to ride click pedals with regular shoes :-) Anyway first thing I noticed was an entry for a hex key at the back of the pedal "screw block" (?) I removed the pedals just like a would with the single speed, old steel bikes, i.e. a long pipe, a 15mm wrench, a string to hold the crank to the chainstay, CRC 5-56 (probably not needed even), left pedal LT, right pedal regular, and so very little force needed for the pedal to come loose. So what is the reason for the hex entry and when do you use it? BTW does anyone have an image with pedal parts and terminology? I image googled but didn't find anything to that end. Pedal spindle (or axle - people use both terms) with allen broach: https://outdoorgearlab-mvnab3pwrvp3t...46_3693_XL.jpg offers faster assembly: http://i.ebayimg.com/00/$%28KGrHqZ,!lIE2EP64yPuBNhl+JMIDw~~_35.JPG?set_id= 8800005007 Or use a power drill with an allen bit in there, faster. We even use a power drill to make bread dough. Fully tighten, or break free to remove, with 15mm pedal wrench. Some pedals omit the wrench flats and have an 8mm allen broach only on the inside. That sounds scary, I'd never buy those. 8mm ist too wimpy for a nice tight fit. Virtually every rider in the pro peleton has pedals tightened with an 8mm hex wrench. https://www.excelsports.com/assets/z...y/112594-5.jpg It's not a problem. It's just inconvenient as compared to the old days of wrench flats. -- Jay Beattie. |
#7
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hex entry at the back of pedal
On 2018-09-29 13:12, jbeattie wrote:
On Saturday, September 29, 2018 at 12:36:21 PM UTC-7, Joerg wrote: On 2018-09-29 11:12, AMuzi wrote: On 9/29/2018 12:59 PM, Emanuel Berg wrote: Today I replaced the pedals on a modern bike with regular ones, which are just commodity items from the hardware store. The modern pedals are too short and, without using such shoes, the interface to fixate them becomes an uncomfortable blob under the foot. You aren't supposed to ride click pedals with regular shoes :-) Anyway first thing I noticed was an entry for a hex key at the back of the pedal "screw block" (?) I removed the pedals just like a would with the single speed, old steel bikes, i.e. a long pipe, a 15mm wrench, a string to hold the crank to the chainstay, CRC 5-56 (probably not needed even), left pedal LT, right pedal regular, and so very little force needed for the pedal to come loose. So what is the reason for the hex entry and when do you use it? BTW does anyone have an image with pedal parts and terminology? I image googled but didn't find anything to that end. Pedal spindle (or axle - people use both terms) with allen broach: https://outdoorgearlab-mvnab3pwrvp3t...46_3693_XL.jpg offers faster assembly: http://i.ebayimg.com/00/$%28KGrHqZ,!lIE2EP64yPuBNhl+JMIDw~~_35.JPG?set_id= 8800005007 Or use a power drill with an allen bit in there, faster. We even use a power drill to make bread dough. Fully tighten, or break free to remove, with 15mm pedal wrench. Some pedals omit the wrench flats and have an 8mm allen broach only on the inside. That sounds scary, I'd never buy those. 8mm ist too wimpy for a nice tight fit. Virtually every rider in the pro peleton has pedals tightened with an 8mm hex wrench. https://www.excelsports.com/assets/z...y/112594-5.jpg It's not a problem. But those guys don't weigh over 200lbs :-) It's just inconvenient as compared to the old days of wrench flats. It sure looks like it but probably shaves off a couple of grams in weight so you can arrive 200 microseconds earlier than the other guy. -- Regards, Joerg http://www.analogconsultants.com/ |
#8
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hex entry at the back of pedal
Joerg wrote:
:On 2018-09-29 11:12, AMuzi wrote: : On 9/29/2018 12:59 PM, Emanuel Berg wrote: : Today I replaced the pedals on a modern bike : with regular ones, which are just commodity : items from the hardware store. The modern : pedals are too short and, without using such : shoes, the interface to fixate them becomes an : uncomfortable blob under the foot. :You aren't supposed to ride click pedals with regular shoes :-) : : Anyway first thing I noticed was an entry for : a hex key at the back of the pedal "screw : block" (?) : : I removed the pedals just like a would with the : single speed, old steel bikes, i.e. a long : pipe, a 15mm wrench, a string to hold the crank : to the chainstay, CRC 5-56 (probably not needed : even), left pedal LT, right pedal regular, and : so very little force needed for the pedal to : come loose. : : So what is the reason for the hex entry and : when do you use it? : : BTW does anyone have an image with pedal parts : and terminology? I image googled but didn't : find anything to that end. : : : Pedal spindle (or axle - people use both terms) with allen broach: : https://outdoorgearlab-mvnab3pwrvp3t...46_3693_XL.jpg : : : offers faster assembly: : http://i.ebayimg.com/00/$%28KGrHqZ,!lIE2EP64yPuBNhl+JMIDw~~_35.JPG?set_id= 8800005007 : :Or use a power drill with an allen bit in there, faster. We even use a ower drill to make bread dough. : : Fully tighten, or break free to remove, with 15mm pedal wrench. : : Some pedals omit the wrench flats and have an 8mm allen broach only on : the inside. : :That sounds scary, I'd never buy those. 8mm ist too wimpy for a nice :tight fit. Typical torque spec for a 12.9 grade 10mm socket head screw, which is what has an 8mm hex socket, is 80 NM (~60 foot pounds). Shimano pedals are 35 or 40 NM (25 to 29 ft pounds), as I recall. If you can't do that with a hex bit, you are not competent to work on anything. -- sig 89 |
#9
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hex entry at the back of pedal
On Saturday, September 29, 2018 at 1:19:02 PM UTC-7, Joerg wrote:
On 2018-09-29 13:12, jbeattie wrote: On Saturday, September 29, 2018 at 12:36:21 PM UTC-7, Joerg wrote: On 2018-09-29 11:12, AMuzi wrote: On 9/29/2018 12:59 PM, Emanuel Berg wrote: Today I replaced the pedals on a modern bike with regular ones, which are just commodity items from the hardware store. The modern pedals are too short and, without using such shoes, the interface to fixate them becomes an uncomfortable blob under the foot. You aren't supposed to ride click pedals with regular shoes :-) Anyway first thing I noticed was an entry for a hex key at the back of the pedal "screw block" (?) I removed the pedals just like a would with the single speed, old steel bikes, i.e. a long pipe, a 15mm wrench, a string to hold the crank to the chainstay, CRC 5-56 (probably not needed even), left pedal LT, right pedal regular, and so very little force needed for the pedal to come loose. So what is the reason for the hex entry and when do you use it? BTW does anyone have an image with pedal parts and terminology? I image googled but didn't find anything to that end. Pedal spindle (or axle - people use both terms) with allen broach: https://outdoorgearlab-mvnab3pwrvp3t...46_3693_XL.jpg offers faster assembly: http://i.ebayimg.com/00/$%28KGrHqZ,!lIE2EP64yPuBNhl+JMIDw~~_35.JPG?set_id= 8800005007 Or use a power drill with an allen bit in there, faster. We even use a power drill to make bread dough. Fully tighten, or break free to remove, with 15mm pedal wrench. Some pedals omit the wrench flats and have an 8mm allen broach only on the inside. That sounds scary, I'd never buy those. 8mm ist too wimpy for a nice tight fit. Virtually every rider in the pro peleton has pedals tightened with an 8mm hex wrench. https://www.excelsports.com/assets/z...y/112594-5.jpg It's not a problem. But those guys don't weigh over 200lbs :-) Yah, but the pros produce two or three times your power and a much higher seated crank bending load than you do. I raced for years at the 200lb mark and bent or broke some pedal spindles -- with flats (early Look and early DuraAce which were re-branded Look). I've never had a problem with the 8mm hex spindle on recent Looks or the XT level Shimano SPD pedals that are hex-only. Those things are bullet proof. Plenty of big boys ride the Shimano road pedals. The design is inconvenient, but it is not scary or dangerous. -- Jay Beattie. |
#10
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hex entry at the back of pedal
David Scheidt wrote:
Typical torque spec for a 12.9 grade 10mm socket head screw, which is what has an 8mm hex socket, is 80 NM (~60 foot pounds). Shimano pedals are 35 or 40 NM (25 to 29 ft pounds), as I recall. If you can't do that with a hex bit, you are not competent to work on anything. 40nm, isn't that the typical casette torque? You are supposed to do that with an 8mm allen wrench? Not that I ever saw this situation first hand! BTW I don't think I put the pedals in that hard. I have a torque wrench but for sockets, not an open spanner - unless you can buy that as a separate part and plug it in? But I doubt they (the pedals) will get much deeper anyhow...? -- underground experts united http://user.it.uu.se/~embe8573 |
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