astonv0l
08-03-03, 07:46 PM
I have aquired a custom frame (Finnpeak) and I am wondering how do I measure the bike to know what size wheels I can put on it?
Bicycle Mechanics - wheel size
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BAC5.2
08-03-03, 08:55 PM
what do you mean?
Diameter?
If it's a road bike, 700c wheels.
Mountain bike, 26", 24"
BMX 24" or 20"
What exactly are you asking?
Diameter?
If it's a road bike, 700c wheels.
Mountain bike, 26", 24"
BMX 24" or 20"
What exactly are you asking?
roadfix
08-04-03, 12:34 AM
First off, is it a road, MTB, or other type of frame? How wide is the real axle spacing? Is the frame set up for cantis or road calipers? Let's narrow that down to begin with..... are you able to distinguish simply by looking?
greywolf
08-04-03, 01:02 AM
If its an old road frame it could even be a candidate for 27" wheels , if thats the case 700c, s should fit ok & are more avalable as are tyres !
astonv0l
08-04-03, 06:47 AM
I'm confused, do all road bikes take 27" wheels irrelevent of their frame size?
I have an old road bike with 27" wheels and it does fit, but there is less than an inch from the brake housing and the tire.
I'm new to this so I dont know what cantis or road calipers are (sorry)
The inside measurment is 5"
Yes, it is a road frame, thanks everyone
I have an old road bike with 27" wheels and it does fit, but there is less than an inch from the brake housing and the tire.
I'm new to this so I dont know what cantis or road calipers are (sorry)
The inside measurment is 5"
Yes, it is a road frame, thanks everyone
Aggressor
08-04-03, 07:17 AM
No, most mountain bikes take 26" wheels.
Road frame should take 700c :)
Road frame should take 700c :)
MichaelW
08-04-03, 07:21 AM
Wheel "sizes" are less about dimensions than designations. The wheel called 27" is about 1cm larger in diameter than the modern standard 700c.
A wheel will fit into a frame when there is sufficient clearance at the frame and brakes for it to rotate, the brake blocks line up with the wheels braking surface, and if the axle locknuts fit within the slots (dropouts) of the frame.
A 700c wheel will generally fit into an older frame designed to use 27", but you would need to lower the brake blocks to meet the rim.
Most road bikes take 700c. Some older models take the 27" size. Some road bikes take a smaller size, called 26" or 650C.
MTBs take a 26" wheel which is different in size to the 650c
Just for fun, some modern road touring bikes take the MTB version of 26".
With regard to brake type, a standard road racing bike uses a caliper brake. If you need to fit wide tyres such as an MTB or touring bike , this design is unsuitable, so a cantelever brake is used. This has 2 small arms linked by a stradle wire and gives loads of tyre clearance. Modern MTBs have a modified form of this called a V-brake.
A wheel will fit into a frame when there is sufficient clearance at the frame and brakes for it to rotate, the brake blocks line up with the wheels braking surface, and if the axle locknuts fit within the slots (dropouts) of the frame.
A 700c wheel will generally fit into an older frame designed to use 27", but you would need to lower the brake blocks to meet the rim.
Most road bikes take 700c. Some older models take the 27" size. Some road bikes take a smaller size, called 26" or 650C.
MTBs take a 26" wheel which is different in size to the 650c
Just for fun, some modern road touring bikes take the MTB version of 26".
With regard to brake type, a standard road racing bike uses a caliper brake. If you need to fit wide tyres such as an MTB or touring bike , this design is unsuitable, so a cantelever brake is used. This has 2 small arms linked by a stradle wire and gives loads of tyre clearance. Modern MTBs have a modified form of this called a V-brake.