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Old 07-02-06, 03:58 AM   #1
wroomwroomoops
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No front derailleur/derailer

I noticed that I can do almost all (90%) of my cycling with the front chaining in the middle, 32 cog. I started thinking about removing the front derailleur, but I am wondering

a)would that bring any advantage as for weight? I would like to avoid risking the chain to fall off, in which case I might still want to chainings to be left alone, in which case there would be virtually no weight loss (of the bicycle - I am OK with my weight )

b) how exactly would I go about that?


Now I am aware that this may be an unusual setup, and that in these fora there are quite a lot of people that just can't stand unusual. So, I have put on my flameproof suit, and hope to get a few useful advices and hints from those of you who are wonderful. Thank you in advance.
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Old 07-02-06, 04:11 AM   #2
M3ta7h3ad
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lol im interested in the same deal so your not alone in your flame suitedness!
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Old 07-02-06, 04:34 AM   #3
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Originally Posted by wroomwroomoops
I noticed that I can do almost all (90%) of my cycling with the front chaining .
Are you going to walk the other 10%. I bet you cross chain alot by using only 1 front ring. The weight saving for your style of riding will make virtually no difference. Don't be sooo lazy, you paid for 'em use 'em.
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Old 07-02-06, 08:34 AM   #4
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You can remove your other chainrings and use just the 32, or maybe remove the others but put a rock guard/pants guard where the big ring was. You'll also want something to keep the chain from bouncing off your 32 'ring, there are several options:
1. Keep the front derailleur there to mind the chain. It can be set via the limit screws to stay in one place without needing the cable or front shifter, so you could remove those.
2. Replace your big ring with a rockguard/pants guard (keeps chain from bouncing to outside), and get a chain watcher, a plastic nub that keeps chain from falling to inside.
3. There may be options to use two pants guard type thingies, one on inside of 32 ring, one outside to keep the chain put. Depends on what crankarms you have, etc.

Weight savings will be pretty minimal, but you can clean up the look by removing your shift cable and shifter, and with a rock guard you don't have to wear leg cuffs or roll your pants for around town commutes.
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Old 07-02-06, 08:57 AM   #5
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Originally Posted by jimmythefly
You can remove your other chainrings and use just the 32, or maybe remove the others but put a rock guard/pants guard where the big ring was. You'll also want something to keep the chain from bouncing off your 32 'ring, there are several options:
1. Keep the front derailleur there to mind the chain. It can be set via the limit screws to stay in one place without needing the cable or front shifter, so you could remove those.
2. Replace your big ring with a rockguard/pants guard (keeps chain from bouncing to outside), and get a chain watcher, a plastic nub that keeps chain from falling to inside.
3. There may be options to use two pants guard type thingies, one on inside of 32 ring, one outside to keep the chain put. Depends on what crankarms you have, etc.

Weight savings will be pretty minimal, but you can clean up the look by removing your shift cable and shifter, and with a rock guard you don't have to wear leg cuffs or roll your pants for around town commutes.
Splendid, just what the doctor has ordered! I need these rockguards, definitely. So, either two rockguards (I don't even know how they look like, but guess it's some bald disk?) or a rockguard and a chain watcher. Good!


I have been thinking about this setup, and it occurred to me that I might save more than just a bit of weight: I might improve transmission efficiency a little bit.


Thank you very much for this information, have a nice Sunday!
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Old 07-02-06, 09:15 AM   #6
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Rockguards, commonly called bashguards. Only needed if you're actually bashing into rocks or over trees. Come in varying thicknesses, strenghts, materials. I use the term rockguard to generically define the big ones made for bashing, and pantsguard to define the thinner ones that won't take a big hit, but in reality there's a whole spectrum of stuff available.

You will not improve efficiency, but you'll hardly decrease it. The chain will run at an angle when it is in the smallest or largest rear cogs, whereas if you use your bigger or smaller chainrings when in the smaller or larger cogs, then chain runs straighter. For your 90% riding, this is an inconsequential matter, but be aware that if you use your 32 ring with the large or smallest cogs most of the time, you will wear out stuff quicker. Improve efficiency by keeping your chain clean, tires inflated, and riding with a tailwind at all times.
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