Modular Track Unit v18.01

Tracks from LifeTrac v16 series.

Specifications

• 15,000 in lb motors at 3000 PSI
• Maximum drive horsepower for each motor - 40 hp
• 8" sprocket, 8 tooth
• Drive force of 3600 lb using a single drive motor
• Design for 2 drive motors
• Max track hp - 80 hp
• Max track tractive effort - 7200 lb
• Standard 4-track configuration - up to 28,000 lb tractive effort and 320 hp
• Cost per 80 hp unit - $1500
• Can be run with 1-20 Power Cubes

Design Costs

• 29k lb tractive effort - $6k
• 2 Power- Cubes for 32 hp version - $2.5k
• Hydraulic Controls - $200
• Hydraulic BOS - $500
• Steel - 15000 lb - $10k

TOTAL - around $20k for a basic prototype

• Total 10 Power Cubes for 160 hp - add $7.5k
• 5000 lb blade - $5k

TOTAL - $33k for 160 hp, 29k lb traction

Prototyping Plan

1. Build a testing rig for measuring pull. Scale attached to a large tree.
2. Test the 14,400 tractive effort version first - by using 4 tracks on a simple machine - and low horsepower
3. Add heavy duty blade module 5000 lb
4. Test the 2-motor per track version, 29k lb traction effort, non-aggressive tracks. Determine point of spinout
5. Test the aggressive tracks and determine traction advantage

Speed Calculations

• 1 Power Cubes (v17.10) per motor gives 1.5 mph speed (based on [1]
• 32 hp for initial testing of 8-motor version gives 0.4 mph or 30 fpm.

Development Template

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