30T on Transition Scout

PB Forum :: Transition
30T on Transition Scout
  • Previous Page
  • Next Page
Author Message
flag ninjachris
O+
Posted: Jul 12, 2015 at 14:50 Quote
Anyone tried a 30T chainring on a Transition Scout 1?
flag crazbiker4
Posted: Jul 14, 2015 at 21:24 Quote
ninjachris wrote:
Anyone tried a 30T chainring on a Transition Scout 1?

I'm using a one up 30t on my xtr with a 11-36 cassette on my scout
flag ninjachris
O+
Posted: Jul 16, 2015 at 22:57 Quote
Cool, thanks! And that's working ok?
flag crazbiker4
Posted: Jul 17, 2015 at 6:55 Quote
ninjachris wrote:
Cool, thanks! And that's working ok?

Yes it is!!! Basically it comes down to wheel size and how much/ long your climbs are.

For example, on my bottle rocket I use a 32T because it has 26in wheels..... here is why:

Gear Inches
(Wheel size X Chainring teeth) / rear cog teeth

we will use 15T rear as an example between 27.5in, 26in & 29in

(26 X 32) / 15 = 55.46 Gear Inches
(27.5 X 32) / 15 = 58.66 Gear Inches
(29 X 32) / 15 = 61.86 Gear Inches

The Higher the gear inches the harder to pedal so in order to correct this or keep it in the same range then you have to use less teeth on the front or rear (switch gears). However sometime switching gears does not give you what you need so that why you need to pick the best front chainring for your riding area/type.

If were to go into the 36T on the rear when having a 32 on the front it would look like this:
(26 X 32) / 36 = 23.11 Gear Inches
(27.5 X 32) / 36 = 24.44 Gear Inches
(29 X 32) / 36 = 25.77 Gear Inches

So if you had a 29er with a 32/36 setup it may not be good for long steep climbs, but can work.

To make it even you can switch the front:
(26 X 32) / 36 = 23.11 Gear Inches
(27.5 X 30) / 36 = 22.91 Gear Inches
(29 X28 / 36 = 22.5 Gear Inches

A typical granny setup would be like this:
(26 X 24) / 36 = 17.33 Gear Inches
(27.5 X 24) / 36 = 18.33 Gear Inches
(29 X 24) / 36 = 19.33 Gear Inches

So the point of going single ring is to try and fin that happy medium for your riding style... for me I like around 55 gear inches when in the 15t rear cog so that's why I went with 30T in the front on my Scout and it matches my 26in bikes closer so when switching back and forth it feels almost the same.

Hope this helps!!!
flag ninjachris
O+
Posted: Jul 17, 2015 at 17:46 Quote
Great, thanks! I'm finding the 32T paired with the 10-42 cassette the bike came with works well for most of my riding, but I'm almost always in one of the 4 largest sprockets, so was wondering about switching to the 30T. It might feel good to know I have one more gear in "reserve" for those really steep climbs!
flag brianl
Posted: Jul 17, 2015 at 17:54 Quote
ninjachris wrote:
Great, thanks! I'm finding the 32T paired with the 10-42 cassette the bike came with works well for most of my riding, but I'm almost always in one of the 4 largest sprockets, so was wondering about switching to the 30T. It might feel good to know I have one more gear in "reserve" for those really steep climbs!
I don't have a Scout, but also SRAM 1x11 on a 27.5 Trail bike (Giant Trance) and I went from 32T to 28T, and it really helped on the long steep climbs. If you think about it, going from 32t to 30t is half a gear, relative to your rear cog spacing, so as long as you don't mind losing a bit on the top end, consider going to 28t chainring.
flag supercollider
O+
Posted: Jul 23, 2015 at 14:35 Quote
Not a scout owner here. But my trail has long sustained climbs as well, and I use a 28t on my xo1 setup.
This is also because I had a knee surgery and don't want to hammer up hill. I'm happy with it so far. I could do a 30t now, but I demoed a 34t and hated life.
  • Previous Page
  • Next Page

 


Copyright © 2000 - 2024. Pinkbike.com. All rights reserved.
dv65 0.011198
Mobile Version of Website