Do any of you technical types have any kind of formula that would tell me based
on the number of teeth, how large a sprocket would be. I'm thinking of making
a larger sprocket, but I think it would be a good idea to know how big it will be
before I get started.
Ray,
If your chain pitch is 1/2', then you get 2 teeth per inch of circumference.
Circumference = (22/7) * Diameter....so
Diameter = Circumference
---------------------
3.143
Add about 1/4 of an inch for the extension of the teeth abone the pitch circle.
Have fun,
Ron
Thanx, that's a big help. I'm trying to figure out how much more top end I
can get by going radical on the gears. I can't go any smaller on the back,
so I'll have to go big up front.
Is there anything I should look out for before going big on the front end,
aside from
- the obvious lack of low-end
- modifying the trans case
- moving the electronics bits
My math tells me (sometimes it lies)
current gears 27 front / 22 back : ratio = 1.227
thinking about 32 front / 22 back : ratio = 1.455
at an engine speed that moves me at 45 mph now, with the new gears would
be 53.3 mph ------ 45 / 1.227 = 36.675 * 1.455 = 53.3
That is if it will still pull that same RPM (with the lesser amount of leverage that a larger spkt has)... and it should come close.
That is based on your description of how it revs out.
Normally an 18 percent change would be too big... but you went with abore kit and pipe and head and all?
Only experimentation will tell... (or somebody elses experience)
You guys sure are fast with the math. I hadn't even figured out that it was an
18 % change. I'm going to the local (and only) local cycle salvage place and
I'm hoping to find some sprockets 30-36 teeth. I'm going to use my 26 sprocket
as a template to cut a matching center in the bigger sprockets. I'll make sure
to let folks here know how it went. Without all of the help I've gotten here, I
would be no way as near complete as I am now with this ped.
Thanx again to everyone !!!
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