⚙️ Strombecker #8429 Gear Set – Pinion & Crown
3/32" (0.0925") Shaft • 1/8" Crown Gear • 4.5:1 Ratio • Vintage Factory Card

The Strombecker #8429 Gear Set includes a precision 3/32" (0.0925") pinion and 1/8" crown gear, providing a classic 4.5:1 gear ratio—perfect for restoring or tuning early slot cars using Pittman, Kemtron, and other vintage motors. This vintage set is factory carded and ready to install on early 1/32 or 1/24 builds.

🛠️ Technical Details
Part Number: Strombecker #8429
Gear Ratio: 4.5:1
Pinion Shaft Fit: .0925" / 3/32" (close sliding fit)
Crown Shaft Fit: 1/8"
Mounting: Recommended to secure with solder, epoxy, or Loctite
Packaging: Original Strombecker factory card

✅ Why Choose These Gears?
• Designed for vintage 3/32" shaft motors — Pittman, Kemtron, etc.
• Will not fit 2mm / .078" shafts used on Mabuchi and similar motors
• Ideal for vintage restorations or custom retro builds
• More reliable than press-fit gears — no special pullers required
• High-performance racers prefer soldered gears for durability and alignment
Installation Tip: Soldered gears prevent distortion, protect motor bearings, and are easy to remove with heat. A must-have for serious builders!

📦 What’s Included
• 1 x Pinion Gear (3/32" shaft)
• 1 x Crown Gear (1/8" shaft)
• Factory-sealed on Strombecker display card

🚚 Shipping Policy
Ships next business day via USPS Ground Advantage. Alternate methods available on request. I may upgrade shipping at no extra cost if it improves delivery time. Arkansas buyers: sales tax applies.

💵 Combine & Save on Shipping
Add items to your cart. Click “Request Total” before paying. I’ll send a combined invoice with actual shipping cost. Already paid? I’ll refund any overage — just ask!

🔁 Returns & Satisfaction Guarantee
30-day returns on new, unopened items. Used/opened items may incur up to a 50% restocking fee. Contact me first before initiating a return — I may offer a faster solution. If your item arrives damaged or incorrect, I’ll make it right. Do not open or use damaged items, as this may void any claims.

🌍 International Buyers
Import duties/taxes not included — buyer is responsible. I do not mark items as gifts or undervalue shipments (per U.S. law).
Estimated Delivery Times:
• First Class Mail: 2–4 weeks
• Priority Mail: 6–10 business days
• Express Mail: 4–8 business days
(Customs delays may occur)

👋 About Me
I’m Jim Cunningham, a lifelong slot car enthusiast and founder of OmniSlotBox and the SlotCarClubhouse in Sherwood, Arkansas. With over 50 years in the hobby, I love helping others restore, race, and enjoy these timeless machines.
If you're ever in the area, drop by the SlotCarClubhouse — visitors are always welcome!
Thanks for supporting small slot car businesses like mine.
Let’s race!
~ Jim Cunningham
OmniSlotBox & SlotCarClubhouse – Sherwood, Arkansas