- Joined
- Sep 17, 2013
- Messages
- 4,217
- Reaction score
- 9,130
I'm building a carbon, alloy and titanium mountain bike to accommodate my age (72), three surgery knees, shoulder repair, bilateral carpal tunnel and three surgery back. I'm six months post double spinal fusion. Anyway, you get the picture, they don't make bikes for me. I need light, low gearing and upright. The theory is that the 3 inch wide tires with 12 psi will act sort of like a suspension. I'm shooting for 25 pounds and gear inch in the high 13s. I'll be using a twin chainring SCRAM carbon crank to get acceptable speed with the low gearing. So that covers light and low gears for my decreped physical state. The problem I am working on is to get me upright as my spine and hips are stiff from the back surgeries. So I have a 70 & 120 mm 16º stems with riser bars and a lot of spacers. The picture shows the bike with the 120mm stem. The 70mm puts me more upright. I am a little concerned that the extreme height of the stem will cause too much strain on the carbon fork tube. Anyone have a thought on this. I am real upright as shown. I haven't cut the fork tube down yet.