Farfle
100 kW
Holy post batman! ill try to answer all the questions.
Yes and no, the headtube joint will be reinforced with a large 10 AWG chromoly sheet gusset, but the Chromoly tubing I am using is so goddam tough that im not sure that the gusset is even needed. I did a mockup weld of the headtube and tested it to destruction. heres the details of the test:
A piece of the 1.5" thin wall chromoly (.035") fish-mouthed with a mill, welded 90* perpendicular to a piece of 1.5" thick wall chromoly (.125"). The piece of thick wall was placed over a piece of 1.125" chromoly solid rod, and a 10 foot long piece of heavy wall mild steel tubing was slid over the piece of thin wall tubing. A weight was placed on the end of the 10 foot piece of heavy wall, it held 475 pounds before failing. This was without a gusset or heat treatment.
Brakes wise, the gatorbrake is the baddest "Bike" brake I have seen, and it was really cheap. 80 bucks cheap. Its about half again larger than the 4 piston shimano brakes, and the pads are huge and cheap. The bike will use a much larger than available floating SS rotor.
The seat position Isn't final, im not sure if im using an XR50 seat or a real bike seat.
As for caster, or rake angle, I was tweaking and tuning on last years bike, trying angled headsets, different amounts of sag in the front and rear suspension different tire sizes etc... and have worked out a good performing headset angle that this frame will use.
Wheelsize is 24", large tires are available and its not as useless offroad as the 20"
hope that answers them all
Yes and no, the headtube joint will be reinforced with a large 10 AWG chromoly sheet gusset, but the Chromoly tubing I am using is so goddam tough that im not sure that the gusset is even needed. I did a mockup weld of the headtube and tested it to destruction. heres the details of the test:
A piece of the 1.5" thin wall chromoly (.035") fish-mouthed with a mill, welded 90* perpendicular to a piece of 1.5" thick wall chromoly (.125"). The piece of thick wall was placed over a piece of 1.125" chromoly solid rod, and a 10 foot long piece of heavy wall mild steel tubing was slid over the piece of thin wall tubing. A weight was placed on the end of the 10 foot piece of heavy wall, it held 475 pounds before failing. This was without a gusset or heat treatment.
Brakes wise, the gatorbrake is the baddest "Bike" brake I have seen, and it was really cheap. 80 bucks cheap. Its about half again larger than the 4 piston shimano brakes, and the pads are huge and cheap. The bike will use a much larger than available floating SS rotor.
The seat position Isn't final, im not sure if im using an XR50 seat or a real bike seat.
As for caster, or rake angle, I was tweaking and tuning on last years bike, trying angled headsets, different amounts of sag in the front and rear suspension different tire sizes etc... and have worked out a good performing headset angle that this frame will use.
Wheelsize is 24", large tires are available and its not as useless offroad as the 20"
hope that answers them all
. Mostly I wanted a hubmotor with the right Rpm/V lots of stator poles, the largest diameter I could get and all of this as inexpensively as possible. There are no hubmotors out there that match that. and total cost on this guy is still under 300 bucks including shipping.
ought to have lots of torque to say the least. Great to see you able to build so much of the bike on your own.
. And in other news, got the front wheel laced up. had to drill out the holes in the wheel AND the hub (barely) to get these 12ga spokes to fit, but daaamn they look beefy.
