Speed Freewheel My sisters 1994 Toyota Corolla 4 cylinder broke the timing belt at highway speed. ?
Are the valves likely to be bent,or do Toyotas have enough valve/piston clearance to "freewheel" if the belt goes? I'd spend the time replacing the belt,but if the valves are bent it's boneyard time.
Any Toyota techs know?
Both the 1.4 and 1.6L engines are Non-Interference Fit engines. Therefore, you can relax. Just replace the belt properly and you will be fine.
Package: 1 x Speed Sprocket Freewheel;
The large pinions are divided into sets of 3 speed and are mounted on a iron frame;
This form reduces stress on the chain which ascends more easily onto the higher diameter sprockets.
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Freewheel 7 speed mounting instructions
what is a good chainwheel and freewheel set up for skate parks?
if i have like 25t chainwheel and 10t freewheel how does that feel
and what other set ups are there?
how does the chainwheel and freewheel effect top speed and acceleration?
You'll need to do a little math to work it out. Here we go:
Divide the number of teeth on the front cog (chainring) by the number of teeth on the back cog (freewheel or cassette) and see what you get.
eg 33T on the front 12T on the back equals 2.75
If you take 2.75 as the "average" value as a lot of stock bikes have this. It basically means that it's not too hard to pedal and you get a reasonable top speed.
Flatlanders like to pedal very easily and don't need a high top speed so they would reduce the number of teeth on the front cog whilst keeping the back cog the same. Then if you do your sums you will have a value of less than 2.75.
I personally like to go fast and currently have 36T on the front and 12T on the back equaling a value of 3. To save weight I'm changing my cogs down to 30T and 10T, I'll have smaller cogs but the sums still make 3 so my bike will have the same acceleration and top speed. A sum of 3 is a less popular but although I found it difficult to pedal at first, my legs were used to it in a week and now anything lower that 3 (I have a 2.75 bike too) doesn't feel fast enough!
25T 10T = 2.5 is gonna be pretty easy to pedal but with a not too high top speed. You won't need that though if you're carving up parks. Mind you the ride home may take a little longer. See if you can go down a BMX shop (with a calculator) and have a test ride on some different gearing setups.
Sorry for the long post but I remember the stress I had trying to work out gearing for the first time!
I hope this helps you but if you're unsure before you change anything just go to a probike shop that sells good BMX parts.
