Predictika · Heavy-duty drive axle applications

An AI sales agent's heavy-duty drive axle quote, checked before it goes out

An AI sales agent prepares a quote for a heavy-duty single or tandem drive axle with an axle ratio, a planned axle load and a gross combination weight. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the published axle ratings and returns a verdict, every reason and the figures it computed.

Scope: Spicer heavy-duty single and tandem drive axles: model, drive configuration, axle ratio range, axle rating and combination weight. See everything this validator covers

This validator models a selection of Spicer heavy-duty single and tandem drive axles, not just the scenarios shown below.

  • Models — tandem models D40-170, D46-170, D50-170, D52-190P and D60-190P, and single-axle models S23-170, S23-190, S26-190 and S30-190, each with its published maximum gross axle weight and gross combination weight.
  • Configuration and ratio — a single-axle model cannot be quoted for a tandem set and a tandem model cannot be quoted as a single axle; the axle ratio must lie inside the range published for the model (for example 3.07 to 7.17 for the D46-170, 3.42 to 7.17 for the D52-190P, 2.53 to 7.83 for the S23-190).
  • Ratings — the planned axle load and gross combination weight are compared with the model's published maximums, and the maximum axle rating stated on the quote is compared with the published figure.

Any quote for these axles that touches these rules is in scope — not only the scenarios pictured here. Not covered: prices (Dana does not publish a price list for axles, so this validator produces no price build-up or line-item quote), the other Spicer axle families (two-speed, double reduction, medium-duty, tridem), hubs, wheel-end and brake options, and the engineering application approval that the published ratings are subject to.

The AI sales agentBuilds the axle quote from the conversation and says it is ready.
Predictika validatorChecks every rule at once and returns the verdict, each finding, and the computed figures.

7 scenarios in 3 groups · each group runs from the agent’s first attempt to the outcome · click one to switch

What the agent proposes

The AI sales agent says

Illustrative agent statement. The validator receives the structured request below.

Proposing agent: AI sales agent (scripted)

Before sending, the agent must call Recorded run

Predictika validator


      

        
        
        
      

      
Waiting for the call.

      
    

  

  
  

    
Where rules-based CPQ gets it wrong
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Our assessment of what a typical rules-based CPQ (product rules, price rules and validation rules, as in Salesforce CPQ) does with the same cases. It is a judgment about effort and reliability, not a claim that nothing can be built.

    
What the validator caughtTypical rules-based CPQPredictika
A single-axle model on a tandem quote, and the reverseOnly with care
A product rule per model and drive configuration. It works, but every added model is another rule to maintain.		The model and the drive configuration are in one request and checked together.
An axle ratio outside the range published for the modelOnly with care
Each model has its own ratio range, so each needs its own validation rule with its own limits.		The ratio is compared with the model's published range on every call, whatever order the choices arrive in.
Planned axle load and combination weight above the model ratingOnly with care
A comparison per model against a table of ratings; someone must keep the table and the rules in step.		The ratings are part of the model and both weights are compared on every call.
A stated rating that differs from the published figureOnly with workarounds
A stated figure is a free-entry field; a rule can compare it with the table, but someone has to write and maintain that comparison.		The stated rating travels with the quote and is compared with the published figure on every call.
Every problem returned in one answerOnly with workarounds
Rules tend to fire as the quote is saved or a step is completed, so a rep often fixes one error and meets the next.		All findings come back together, whatever order the choices arrived in.

  

  

    
What this validator catches: findings from its test cases
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Every rule is checked on every call, in any order the choices arrive; one problem never hides another. Blocking findings stop the quote; approval findings need a person to sign off; everything else is computed.

    
1The selected model is a single drive axle; it cannot be quoted for a tandem drive set.
2The selected model is a tandem drive axle; it cannot be quoted for a single drive axle.
3The axle ratio on the quote is lower than the lowest ratio published for the selected model.
4The axle ratio on the quote is higher than the highest ratio published for the selected model.
5The planned gross axle weight is 46,000 lb, but the selected model is published at a maximum of 40,000 lb.
6The planned gross axle weight is 46,001 lb, but the selected model is published at a maximum of 46,000 lb.
7The planned gross combination weight is 165,000 lb, but the selected model is published at a maximum of 160,000 lb.
8The planned gross combination weight is 230,000 lb, but the selected model is published at a maximum of 225,000 lb.
9The planned gross combination weight is 110,000 lb, but the selected model is published at a maximum of 100,000 lb.
10The quote states a maximum axle rating of 50,000 lb, but the selected model is published at 46,000 lb.
11The quote states a maximum axle rating of 0 lb, but the selected model is published at 46,000 lb.
12The planned gross axle weight is 52,000 lb, but the selected model is published at a maximum of 26,000 lb.
13The planned gross combination weight is 200,000 lb, but the selected model is published at a maximum of 125,000 lb.
14The quote states a maximum axle rating of 52,000 lb, but the selected model is published at 26,000 lb.

  

  

    
Scenarios and results
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The recorded result of the validator for each scenario on this page: the request the AI agent sent, the verdict, and every finding, in the order they appear above.

    
1. Axle rating: A D40-170 tandem quote with a heavy axle load and combination weight

    
The agent's request. Please quote one Spicer D40-170 for a tandem drive set at a 4.10:1 axle ratio, for a planned axle load of 46,000 lb and a gross combination weight of 170,000 lb. The quote states a maximum axle rating of 46,000 lb. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Planned axle load above the model rating. The planned gross axle weight is 46,000 lb, but the selected model is published at a maximum of 40,000 lb.
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  • Planned combination weight above the model rating. The planned gross combination weight is 170,000 lb, but the selected model is published at a maximum of 160,000 lb.
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  • Stated axle rating differs from the model. The quote states a maximum axle rating of 46,000 lb, but the selected model is published at 40,000 lb.
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2. Axle rating: The agent resubmits after fixing the errors

    
The agent's request. Please quote one Spicer D50-170 for a tandem drive set at a 4.10:1 axle ratio, for a planned axle load of 46,000 lb and a gross combination weight of 150,000 lb. The quote states a maximum axle rating of 50,000 lb. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. 1 axle set; the selected model is published at up to 50,000 lb gross axle weight and 160,000 lb gross combination weight.
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3. Axle ratio: A D52-190P tandem quote with a low axle ratio

    
The agent's request. Please quote one Spicer D52-190P for a tandem drive set at a 3.31:1 axle ratio, for a planned axle load of 52,000 lb and a gross combination weight of 200,000 lb. The quote states a maximum axle rating of 52,000 lb. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Axle ratio below the model range. The axle ratio on the quote is lower than the lowest ratio published for the selected model.
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4. Axle ratio: The agent resubmits after fixing the errors

    
The agent's request. Please quote one Spicer D52-190P for a tandem drive set at a 3.42:1 axle ratio, for a planned axle load of 52,000 lb and a gross combination weight of 200,000 lb. The quote states a maximum axle rating of 52,000 lb. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. 1 axle set; the selected model is published at up to 52,000 lb gross axle weight and 225,000 lb gross combination weight.
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5. Model and drive configuration: A single-axle model on a tandem quote

    
The agent's request. Please quote one Spicer S26-190 for a tandem drive set at a 5.29:1 axle ratio, for a planned axle load of 52,000 lb and a gross combination weight of 200,000 lb. The quote states a maximum axle rating of 52,000 lb. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Single axle model quoted as a tandem set. The selected model is a single drive axle; it cannot be quoted for a tandem drive set.
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  • Planned axle load above the model rating. The planned gross axle weight is 52,000 lb, but the selected model is published at a maximum of 26,000 lb.
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  • Planned combination weight above the model rating. The planned gross combination weight is 200,000 lb, but the selected model is published at a maximum of 125,000 lb.
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  • Stated axle rating differs from the model. The quote states a maximum axle rating of 52,000 lb, but the selected model is published at 26,000 lb.
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6. Model and drive configuration: The agent resubmits after fixing the errors

    
The agent's request. Please quote one Spicer D52-190P for a tandem drive set at a 7.90:1 axle ratio, for a planned axle load of 52,000 lb and a gross combination weight of 200,000 lb. The quote states a maximum axle rating of 52,000 lb. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Axle ratio above the model range. The axle ratio on the quote is higher than the highest ratio published for the selected model.
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7. Model and drive configuration: The agent resubmits after fixing the errors

    
The agent's request. Please quote one Spicer D52-190P for a tandem drive set at a 5.29:1 axle ratio, for a planned axle load of 52,000 lb and a gross combination weight of 200,000 lb. The quote states a maximum axle rating of 52,000 lb. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. 1 axle set; the selected model is published at up to 52,000 lb gross axle weight and 225,000 lb gross combination weight.
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Narration transcript
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The text of the narrated walkthrough, step by step.

    
    
      
  1. Welcome to a demo of Predictika's Validator. An AI sales agent prepares a quote for a heavy-duty single or tandem drive axle with an axle ratio, a planned axle load and a gross combination weight. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the published axle ratings and returns a verdict, every reason and the figures it computed.
    2. 
      
  2. I will start with the first request by the agent.
    3. 
      
  3. The agent says. Please quote one Spicer S26-190 for a tandem drive set at a 5.29:1 axle ratio, for a planned axle load of 52,000 lb and a gross combination weight of 200,000 lb. The quote states a maximum axle rating of 52,000 lb. The rest of the request is on screen.
    4. 
      
  4. Before it goes out, the agent calls the validator.
    5. 
      
  5. Blocked, with four findings, all in one answer. The selected model is a single drive axle; it cannot be quoted for a tandem drive set. The planned gross axle weight is 52,000 lb, but the selected model is published at a maximum of 26,000 lb. The planned gross combination weight is 200,000 lb, but the selected model is published at a maximum of 125,000 lb. The other one is on screen.
    6. 
      
  6. The validator returned four blocking findings in one answer. A check that reads one field at a time would pass most of this; it shows only when the choices in the quote are checked against each other.
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  7. What this shows: for planned axle load and combination weight above the model rating, a rules-based CPQ is error-prone for this.
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  8. Now the agent resubmits.
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  9. The corrected request. It changes the axle model to D52-190P and the axle ratio to 7.90:1.
    10. 
      
  10. It calls the validator again.
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  11. Still blocked, with one finding, all in one answer. The axle ratio on the quote is higher than the highest ratio published for the selected model.
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  12. Four findings cleared, but the change brings a different blocking finding: axle ratio above the model range.
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  13. The agent resubmits once more.
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  14. The revised request. It changes the axle ratio to 5.29:1.
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  15. It calls the validator once more.
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  16. This time the validator clears it.
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  17. The earlier finding is cleared, and the validator's figure matches the quote.
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  18. Four problems caught in one call, fixed in two passes, and a clean quote. That is the value of Predictika's validator: catching mistakes before they reach the customer. Now you can try the other scenarios yourself.
    19.