I was able to visit all the bike shops out here in the little towns. I also looked for a fabrication shop who could make up my fork extensions. I had no luck with anything, the girl at bike shop with the most parts kept telling me they had no stock but the shelves were full! Must be the language barrier. Their 26" rims were only an inch wide and I'm fairly sure my 3" tires need at least 1.75 in width. They also said they had no chrome handlebars as my wife pointed out a set right above our head. So I picked up a big pair of handlebars. That was it fot today. My nephew waited in line all afternoon to get us a pass to travel to the big city tomorrow. Bike scavenging wasn't the reason, I'm new and setting up my healthcare needs, so it's a medical appointment. We'll head out and hit all the places then go to my appointment. There are few used bike places anywhere around here which doesn't make sense, there's a big market for bikes. So I'm hoping for wheels tomorrow and a frame.
I did a check to see how big the dropouts need to be to accomodate the gears. The calculations I did awhile back came up with a 3" difference between the longest and shortest length of chain
which equates to 1 1/2" at the dropout. To rehash, my idea is to change gears manually along with having the 2 speed kickback on the SA hub. I will loosen the wheel and place the chain on the desired chainwheel and cog to set my 2 speed kickback ratios. With 2 chain wheels and 2 cogs, that will give me 8 speeds, but only two usable while riding. So I laid out the cogs and chain wheels on the kitchen table (I had to hurry before I got caught) and measured the difference between the longest and shortest configuration. The calculations were right on, the droputs will need to have 1 1/2" of adjustability. That will be dropout slots 2 1/2" long as there will need to be adjustment for the chain and alignment. I'll draw up templates for the dropout extensions when I have a frame.
Longest:
Shortest:
I did a check to see how big the dropouts need to be to accomodate the gears. The calculations I did awhile back came up with a 3" difference between the longest and shortest length of chain
which equates to 1 1/2" at the dropout. To rehash, my idea is to change gears manually along with having the 2 speed kickback on the SA hub. I will loosen the wheel and place the chain on the desired chainwheel and cog to set my 2 speed kickback ratios. With 2 chain wheels and 2 cogs, that will give me 8 speeds, but only two usable while riding. So I laid out the cogs and chain wheels on the kitchen table (I had to hurry before I got caught) and measured the difference between the longest and shortest configuration. The calculations were right on, the droputs will need to have 1 1/2" of adjustability. That will be dropout slots 2 1/2" long as there will need to be adjustment for the chain and alignment. I'll draw up templates for the dropout extensions when I have a frame.
Longest:
Shortest: