I picked up my new wheel yesterday and was so excited to install it! After finishing up the installation, I remembered I needed to swap out my corresponding shifter to an 8-speed (from 7) to operate the new 8-speed cassette. Being me, I didn't want to rest until I finished. Needing at least 5 hrs of sleep to operate normally, I hit the sack at 2:45am.
So how did all this happen?
Assuming products of the same manufacturer would make compatible parts, I tried to get all my components together last night only to find out this afternoon that they do not work together!
The SRAM MRX Comp 8-speed shifter has a 2:1 ratio. The ratio comes from how much tension the cable makes based on a single gear shift of the shifter. The ratio needs to match the rear derailleur that it operates. The derailleur I have is the stock SRAM 3.0. I only learned recently that it has a 1:1 ratio, meaning it is not compatible.
What a waste of $12.
Amazon has some good prices and with the Prime membership that ships stocked items in 2 days, I guess I sometimes get overly excited and button happy - mouse button that is, which translates to quick purchases.
So the question now is do I get a new shifter or a new derailleur? I really like the grip shifts as opposed to the index shifting or rapid shifters, so I'm leaning towards replacing the rear derailleur with a compatible one.
OPTION 1:
However, I just remembered that Mike gave me a twist shifter a couple weeks ago. I wonder if it's a 1:1 ratio one. If it is and it's an 8-speed, it'll work! It'll be silver and won't match the other side, but at least it'll work - if it does.
OPTION 2:
On my trip to Monterey to pick up the SRAM 3x7 IGH, Andy also gave me a couple high end shifters (with faded numbers) and a nice derailleur to go with it. Both are supposedly high end and after doing some research found that the components combined are sold for an excess of $120. That's a lot compared to the $12 shifter I got from Amazon, eh?
OPTION 3:
Spend additional monies and buy either a shifter or a derailleur.
I'll give the first two options a try when I get home and will report back later.
....
Okay, it's later. I didn't have the parts for Option 1 so I dug up the XTR derailleur that Andy got me and it works! It's got 1:1 ratio. After 40 minutes of adjusting, the chain finally moves through all the cogs. It can still use some tuning, but for now this'll do. I didn't have enough time to take it around for more than a few runs up and down the block.
So far the trike rides fairly well considering the extra weight of the new wheel. I'm pleasantly surprised. I won't be able to gauge the performance difference accurately until I take it for my routine ride. Another variable worth noting is the new Marathon tire that replaced the lighter weight Marathon Racer.
So how did all this happen?
Assuming products of the same manufacturer would make compatible parts, I tried to get all my components together last night only to find out this afternoon that they do not work together!
The SRAM MRX Comp 8-speed shifter has a 2:1 ratio. The ratio comes from how much tension the cable makes based on a single gear shift of the shifter. The ratio needs to match the rear derailleur that it operates. The derailleur I have is the stock SRAM 3.0. I only learned recently that it has a 1:1 ratio, meaning it is not compatible.
What a waste of $12.
Amazon has some good prices and with the Prime membership that ships stocked items in 2 days, I guess I sometimes get overly excited and button happy - mouse button that is, which translates to quick purchases.
So the question now is do I get a new shifter or a new derailleur? I really like the grip shifts as opposed to the index shifting or rapid shifters, so I'm leaning towards replacing the rear derailleur with a compatible one.
OPTION 1:
However, I just remembered that Mike gave me a twist shifter a couple weeks ago. I wonder if it's a 1:1 ratio one. If it is and it's an 8-speed, it'll work! It'll be silver and won't match the other side, but at least it'll work - if it does.
OPTION 2:
On my trip to Monterey to pick up the SRAM 3x7 IGH, Andy also gave me a couple high end shifters (with faded numbers) and a nice derailleur to go with it. Both are supposedly high end and after doing some research found that the components combined are sold for an excess of $120. That's a lot compared to the $12 shifter I got from Amazon, eh?
OPTION 3:
Spend additional monies and buy either a shifter or a derailleur.
I'll give the first two options a try when I get home and will report back later.
....
Okay, it's later. I didn't have the parts for Option 1 so I dug up the XTR derailleur that Andy got me and it works! It's got 1:1 ratio. After 40 minutes of adjusting, the chain finally moves through all the cogs. It can still use some tuning, but for now this'll do. I didn't have enough time to take it around for more than a few runs up and down the block.
So far the trike rides fairly well considering the extra weight of the new wheel. I'm pleasantly surprised. I won't be able to gauge the performance difference accurately until I take it for my routine ride. Another variable worth noting is the new Marathon tire that replaced the lighter weight Marathon Racer.
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