As you weld it like that Paul, how do you get your axle on it? It closes the opening ad the bottom.
Why oh why am I building a ' very low ' racing bike called 10% , when I am the wrong side of 65 ?
- Thread starter stormbird
- Start date
I took this from the drawing on the previous page
I then clamped it underneath the drop out lining up the axle holes , I then trimmed the hanger mount and placed it on top of the drawing screwing it down for good measure.
here it is unscrewed after welding , some time when the cutters/grinders/welder are out I will add a brace as shown by the blue felt tip pen line.
Paul
OK, yes that works.
Looks good.
Soon you go fast on your trike.
Looks good.
Soon you go fast on your trike.
Ok so delayed whilst I indulged in some pedal car racing , a whole weekend at Blackbushe :-
notice team colours !
Ok not fast about 18mph heading down a slight hill to a 90' before the first of 2 hairpins , I came away from the weekend tired but happy.
There was 4 of us in the car and made 11th day one and 12th day two out of 26 cars , although a lot of cars were scouts ! 18 were adults or fit teenagers [ compared with me a 68 yr old f*rt ]
Today I got stuck into the rotating return side pulley , the plan is to weld a saddle onto a Shimano rear mech and cut off the parts not needed ?
So saddle and top trimmed to meet it giving a reasonable weld length IF the stuff is weldable ? anyone tried this ?
Saddle has a M6 hole in it for swivel bolt
All for now
Paul
Ok not fast about 18mph heading down a slight hill to a 90' before the first of 2 hairpins , I came away from the weekend tired but happy.
There was 4 of us in the car and made 11th day one and 12th day two out of 26 cars , although a lot of cars were scouts ! 18 were adults or fit teenagers [ compared with me a 68 yr old f*rt ]
Today I got stuck into the rotating return side pulley , the plan is to weld a saddle onto a Shimano rear mech and cut off the parts not needed ?
So saddle and top trimmed to meet it giving a reasonable weld length IF the stuff is weldable ? anyone tried this ?
Saddle has a M6 hole in it for swivel bolt
All for now
Paul
Ok hit with glue gun...
Seems the ' chrome ' look side had a strange glow around it however welded well and all still fits together nicely.
Marked out for some trimming and needs a bracket making for swivel bolt , hard to fix to frame with it being round tubing , we shall see.
Paul
Seems the ' chrome ' look side had a strange glow around it however welded well and all still fits together nicely.
Marked out for some trimming and needs a bracket making for swivel bolt , hard to fix to frame with it being round tubing , we shall see.
Paul
Trimmed we are
Though I may try and mount if from a M6 rod end bearing , it will give me some adjustment and allow more motion.
So something like this with rod end fixed at main frame and a locknut on the top and the excess trimmed off to get it as close as possible to the power side pulley [ the next job ]
Can't wait to see it swivelling as it were.
Paul
Though I may try and mount if from a M6 rod end bearing , it will give me some adjustment and allow more motion.
So something like this with rod end fixed at main frame and a locknut on the top and the excess trimmed off to get it as close as possible to the power side pulley [ the next job ]
Can't wait to see it swivelling as it were.
Paul
So 11 days before I found some time to deploy the new swivel and using a big pulley I have been assured will be rent asunder by the forces ....
Not an ideal mounting position for the big pulley [ chain not parallel to front fork ] it needs to be closer to the middle of the head tube.
Not an ideal mounting position for little pulley either could be higher and closer to big pulley.
I tried to pedal the thing , most disappointing it took a huge amount of force to turn the pedals , however once moving it could do some incredible things ?
full left and full right !!!
On full right chain grazes tyre and it still turns.
look at the crazy chain angles , twisting or what ?
So why so hard to turn the pedals ? how to quantify it and measure any improvements ?
best I could come up with 10 x M12 40mm bolts with pedal horizontal could move pedal downwards ?
So not really a fair test as Python has bigger wheel and different gearing however on 3 x M10 40mm bolts needed to move that.
After an afternoon of messing I found:-
a) wheel axle locknuts not tight and wheel tightening slowly as it was used
b) rear mech to much resistance in pulleys [ same as SRAM I started with , with locked up lower pulley
c) possible stiff link in chain
After addressing all those problems I ended up with 5 x M12 40mm bolts needed to move the pedal , so 1/2 what I started with and only 1.67 more effort than Python.
Maybe the price of the extra pulleys and all that chain , boy does the chain go through some angles compared to Python.
Next ? need a trike rear end so I can sit on it and figure out some handlebars oh and add some brakes.....
More delays coming as I go on holiday from Friday and yet more pedal car racing on the 30th
can't wait.
Paul
Not an ideal mounting position for the big pulley [ chain not parallel to front fork ] it needs to be closer to the middle of the head tube.
Not an ideal mounting position for little pulley either could be higher and closer to big pulley.
I tried to pedal the thing , most disappointing it took a huge amount of force to turn the pedals , however once moving it could do some incredible things ?
On full right chain grazes tyre and it still turns.
So why so hard to turn the pedals ? how to quantify it and measure any improvements ?
So not really a fair test as Python has bigger wheel and different gearing however on 3 x M10 40mm bolts needed to move that.
After an afternoon of messing I found:-
a) wheel axle locknuts not tight and wheel tightening slowly as it was used
b) rear mech to much resistance in pulleys [ same as SRAM I started with , with locked up lower pulley
c) possible stiff link in chain
After addressing all those problems I ended up with 5 x M12 40mm bolts needed to move the pedal , so 1/2 what I started with and only 1.67 more effort than Python.
Maybe the price of the extra pulleys and all that chain , boy does the chain go through some angles compared to Python.
Next ? need a trike rear end so I can sit on it and figure out some handlebars oh and add some brakes.....
More delays coming as I go on holiday from Friday and yet more pedal car racing on the 30th
can't wait.Paul
A decent amount of lock there Paul.So 11 days before I found some time to deploy the new swivel and using a big pulley I have been assured will be rent asunder by the forces ....
Not an ideal mounting position for the big pulley [ chain not parallel to front fork ] it needs to be closer to the middle of the head tube.
Not an ideal mounting position for little pulley either could be higher and closer to big pulley.
I tried to pedal the thing , most disappointing it took a huge amount of force to turn the pedals , however once moving it could do some incredible things ?
full left and full right !!!
On full right chain grazes tyre and it still turns.
look at the crazy chain angles , twisting or what ?
So why so hard to turn the pedals ? how to quantify it and measure any improvements ?
best I could come up with 10 x M12 40mm bolts with pedal horizontal could move pedal downwards ?
So not really a fair test as Python has bigger wheel and different gearing however on 3 x M10 40mm bolts needed to move that.
After an afternoon of messing I found:-
a) wheel axle locknuts not tight and wheel tightening slowly as it was used
b) rear mech to much resistance in pulleys [ same as SRAM I started with , with locked up lower pulley
c) possible stiff link in chain
After addressing all those problems I ended up with 5 x M12 40mm bolts needed to move the pedal , so 1/2 what I started with and only 1.67 more effort than Python.
Maybe the price of the extra pulleys and all that chain , boy does the chain go through some angles compared to Python.
Next ? need a trike rear end so I can sit on it and figure out some handlebars oh and add some brakes.....
More delays coming as I go on holiday from Friday and yet more pedal car racing on the 30th
Paul
I gave up on twisted-chain as I found it all far too fiddly and difficult to make work, so well done you.
PossiblyA decent amount of lock there Paul.
It don't work yet it has not turned a wheel on the ground yet , still plenty of room for failure
Paul