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| The Pub For General Automotive Related Talk |
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11-05-2020, 08:17 AM
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DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 22,518
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Been batting this back and forth with my mate in the workshop.
Does (say) an 11A0700 belt have the same ratio of taper as a 10A0700? So the tip of the 10A will be 10/11ths of the 11A’s tip width? Or is it different? It came about from his insistence on using an 11A where the original was a 9 or 10A but the sheaves worn. “Same taper” he says, “It will just sit higher in the pulley”. No beer or pride is at stake, just a quest for the actual truth. |
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11-05-2020, 08:31 AM
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Bolt Nerd
 
Join Date: Jan 2005
Location: Ojochal, Costa Rica (Pura Vida!)
Posts: 14,901
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He’s mixing up DIN and ISO standards.
I’m used to ISO (Z, A, B sections) DIN is numbers... Hope this table helps..  Sent from my iPhone using Tapatalk
__________________
Current vehicles.. Yamaha Rhino UTV, SWB 4L TJ Jeep, and boring Lhd RAV4 Bionic BF F6... UPDATE: Replaced by Shiro White 370z 7A Roadster. SOLD Workhack: FG Silhouette XR50 Turbo ute (11.63@127.44mph) SOLD 2 wheels.. 2015 103ci HD Wideglide.. SOLD SOLD THE LOT, Voted with our feet and relocated to COSTA RICA for some Pura Vida! (Ex Blood Orange #023 FPV Pursuit owner  : )
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11-05-2020, 08:32 AM
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FF.Com.Au Hardcore
Join Date: Nov 2013
Posts: 2,037
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No no no no. Make it interesting. Put some beer and pride on the line!
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11-05-2020, 09:11 AM
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#4 | ||
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DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 22,518
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Next you’ll want girls dancing on the bar!
Here’s the belt (OK, the packet) which kicked off the discussion. My mate contended this was the same cross-sectional ratio as 10A0545 (the spec’d belt for an application).  So in fact, this would be just riding on the “root” of the belt, compared to the correct item? |
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11-05-2020, 09:25 AM
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#5 | ||
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Bolt Nerd
Join Date: Jan 2005
Location: Ojochal, Costa Rica (Pura Vida!)
Posts: 14,901
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Ahh ok... 10a 11a etc...
 Sent from my iPhone using Tapatalk
__________________
Current vehicles.. Yamaha Rhino UTV, SWB 4L TJ Jeep, and boring Lhd RAV4 Bionic BF F6... UPDATE: Replaced by Shiro White 370z 7A Roadster. SOLD Workhack: FG Silhouette XR50 Turbo ute (11.63@127.44mph) SOLD 2 wheels.. 2015 103ci HD Wideglide.. SOLD SOLD THE LOT, Voted with our feet and relocated to COSTA RICA for some Pura Vida! (Ex Blood Orange #023 FPV Pursuit owner : )
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11-05-2020, 09:30 AM
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#6 | ||
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DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 22,518
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Gracias. So the taper is not constant, assuming the sectional drawings to scale?
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11-05-2020, 09:40 AM
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#7 | ||
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Bolt Nerd
Join Date: Jan 2005
Location: Ojochal, Costa Rica (Pura Vida!)
Posts: 14,901
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Appears that way!
In my day, an A section belt was simply an A... It was 1/2” or around 13mm across the top. A “Z” was next smaller section being 3/8” (10mm) across the top. I’m talking industrial though. I’d suggest Jap auto makers were behind the A section increments?
__________________
Current vehicles.. Yamaha Rhino UTV, SWB 4L TJ Jeep, and boring Lhd RAV4 Bionic BF F6... UPDATE: Replaced by Shiro White 370z 7A Roadster. SOLD Workhack: FG Silhouette XR50 Turbo ute (11.63@127.44mph) SOLD 2 wheels.. 2015 103ci HD Wideglide.. SOLD SOLD THE LOT, Voted with our feet and relocated to COSTA RICA for some Pura Vida! (Ex Blood Orange #023 FPV Pursuit owner : )
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11-05-2020, 10:54 AM
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#8 | ||
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FF.Com.Au Hardcore
Join Date: Jan 2011
Posts: 1,386
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Modern narrow-profile automotive belts (10A, 11A, 13A etc.) all have the same wedge angle of 34 degrees. 10A & 11A are interchangeable in most cases.
The old style industrial belts V-belts (A-size B-size etc.) are 40 degrees. An A-size is often interchanged for a 13A automotive & works fine. The 6 degrees difference between the two types equates to only 3 degrees per side, hardly noticeable with rubber to metal contact. Dr Terry |
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11-05-2020, 11:12 AM
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#9 | ||
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DIY Tragic
Join Date: Apr 2018
Location: Sydney, more than not. I hate it.
Posts: 22,518
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Thanks. That figure of 34° is what I was unable to find.
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Vee Belt Taper
Linear Mode
