Finding the right size for a vintage Trek 850 from 1994 can be tricky, as detailed size charts weren't as readily available back then as they are now. However, we can use some detective work and general bicycle sizing principles to help you determine the appropriate frame size. Unfortunately, a definitive, universally accessible 1994 Trek 850 size chart doesn't exist online. The information below will guide you through the process.
What Information Do I Need to Find My Size?
To estimate the correct frame size for a 1994 Trek 850, you'll need to know your inseam measurement and ideally, your height. Inseam is the most critical measurement for determining frame size, as it directly relates to the rider's leg length and the bike's geometry.
-
Inseam Measurement: Measure from your crotch to the floor while standing barefoot, shoes off. This is the most crucial measurement.
-
Height: While less critical than inseam, your height provides additional context.
How Do I Use My Measurements?
Trek didn't provide precise measurements for every frame size for this vintage model. Therefore, we must rely on general bicycle sizing guidelines and approximations. Here's a general approach:
Understanding General Bicycle Sizing
Generally, mountain bike frame sizes are categorized as small (S), medium (M), large (L), and extra-large (XL). The numerical size (e.g., 17", 19") refers to the length of the seat tube, measured from the center of the bottom bracket to the top of the seat tube. However, this measurement alone isn't sufficient for a precise fit. Other factors, such as top tube length and head tube angle, also contribute to overall geometry.
Estimating Your Trek 850 Size Based on Inseam
Unfortunately, without a specific 1994 Trek 850 size chart, precise correlation is impossible. However, as a guideline:
- Short inseam (under 28 inches): Likely a small (S) frame.
- Medium inseam (28-30 inches): Likely a medium (M) frame.
- Long inseam (31-33 inches): Likely a large (L) frame.
- Extra-long inseam (over 33 inches): Likely an extra-large (XL) frame.
Keep in mind: These are broad estimations. Ideally, test riding different frame sizes would be ideal to find the best fit.
What if I Can't Find the Exact Size?
Finding a perfectly matching frame size for a vintage bike might be challenging. If you're between sizes, consider the following:
-
Prioritize inseam: If you're in between, prioritize the inseam measurement. A slightly too-large top tube can be adjusted with stem length and seat post adjustment, but a too-short frame will severely compromise leg extension and comfort.
-
Seek advice from a bike shop: If possible, consult with a local bicycle shop specializing in vintage or used bikes. They can often provide valuable insights and guidance based on their experience.
-
Consider other factors: Examine the bike's overall geometry; top tube length, head tube angle, and reach will all play a role in determining rider comfort and handling.
Where Can I Find More Information About Vintage Trek Bikes?
Online forums and communities dedicated to vintage bicycles can be excellent resources. Search for forums focusing on Trek bicycles or classic mountain bikes; you might find someone who owns or has owned a 1994 Trek 850 and can share their size and fit experience. Remember to check the Trek archives if possible, though accessing such old data could be difficult.
This guide provides a starting point for determining your 1994 Trek 850 size. Remember that finding the perfect fit involves considering several factors beyond just a size chart, and practical experience is invaluable in this process.
