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Had some mods done to my primary ride.

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Had some mods done to my primary ride.

Old 05-21-19, 12:46 PM
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Helderberg
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Had some mods done to my primary ride.




Sorry about the size. Thought I had downsized them. Had the 11-36 cogs, rear DR, Flat 4x4 pedals w/spikes added. Didn't spring for the big money pedals as I wanted to see what and if they made a difference. They do and I will be moving these to my other Quick and buying a better set for this ride. The changes made a tremendous difference on both the hills and the flats.
Frank.

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Old 05-21-19, 05:57 PM
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It looks nice, Frank!!
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Old 05-22-19, 03:41 PM
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Thanks hokiefyd for your response. the rear cog change made a huge difference with the hills around here and my old legs.
Frank.
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Old 05-22-19, 05:36 PM
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I have a 12-36 on the back of my Roam, with a 28-38-48 in the front. Lots of range on that bike. I've also downsized it to 47-584 tires, so they're also a hair shorter than the stock tires.
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Old 05-22-19, 07:42 PM
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Originally Posted by hokiefyd View Post
I have a 12-36 on the back of my Roam, with a 28-38-48 in the front. Lots of range on that bike. I've also downsized it to 47-584 tires, so they're also a hair shorter than the stock tires.
Sounds like you have a good setup for hills. What did the smaller wheels do to your net gearing? Do you run disc brakes or was there enough adjustment on the cinchers?
Frank.
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Old 05-23-19, 05:36 AM
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Originally Posted by Helderberg View Post
Sounds like you have a good setup for hills. What did the smaller wheels do to your net gearing? Do you run disc brakes or was there enough adjustment on the cinchers?
Frank.
The smaller wheels and tires shortened the gearing (equivalent to going to a smaller chain ring on the front), but not significantly. My bike came with 38-622 tires (700x38), and these are about 700mm tall. I had as large as 50-622 tires (29x2) on it, which are about 722mm tall. My current tires are about 678mm tall. So I've shortened the gearing by about 3% compared with stock, and by about 6% compared with the larger 29" tires. That's like going from a 28T front chain ring to a 27T chain ring (3%) or a 26T chain ring (6%).

The main reason for the change was to run larger section tires (45-50mm) without significantly increasing the diameter (and standover), like I had with the 29x2 tires. Standover was already tight with the large frame size, but it got tighter with the 29x2 tires. It's now a shade less than what it was stock, which is perfect for me. I could have traded bikes or something like that, but I have about $200 total in the wheels and tires, and I thought that I'd rather have these (and potentially be able to use them on another build down the road) than a different bike.
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Old 05-23-19, 07:15 AM
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Originally Posted by hokiefyd View Post
The smaller wheels and tires shortened the gearing (equivalent to going to a smaller chain ring on the front), but not significantly. My bike came with 38-622 tires (700x38), and these are about 700mm tall. I had as large as 50-622 tires (29x2) on it, which are about 722mm tall. My current tires are about 678mm tall. So I've shortened the gearing by about 3% compared with stock, and by about 6% compared with the larger 29" tires. That's like going from a 28T front chain ring to a 27T chain ring (3%) or a 26T chain ring (6%).

The main reason for the change was to run larger section tires (45-50mm) without significantly increasing the diameter (and standover), like I had with the 29x2 tires. Standover was already tight with the large frame size, but it got tighter with the 29x2 tires. It's now a shade less than what it was stock, which is perfect for me. I could have traded bikes or something like that, but I have about $200 total in the wheels and tires, and I thought that I'd rather have these (and potentially be able to use them on another build down the road) than a different bike.
What brakes are you running? Must be disc?
Frank.
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Old 05-23-19, 05:57 PM
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Yes, the Roam has disc brakes. They're Shimano M315 hydraulics.
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