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Broken FD3304 Shimano Sora front deraleur

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Broken FD3304 Shimano Sora front deraleur

Old 05-02-16, 10:27 PM
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Broken FD3304 Shimano Sora front deraleur

I can't find a Shimano FD3304 front derailleur 28.6. It came on my Jamis Satellite. If anyone knows where one could be purchased new or used let me know. If not what are my options, what could I upgrade to changing only the derailleurs front and rear. Or what would be the best replacement for the FD 3304, keeping everything else the same.
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Old 05-02-16, 11:10 PM
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It's just an 8-speed triple front derailleur, nothing special.

You can replace it with any other 8 or 9-speed road triple front derailleur. I take it that it has a band clamp built onto it, since you wrote that it's a 28.6.

So any 8 or 9-speed front triple derailleur with a 26.8 band clamp OR any braze-on triple front derailleur, AND a braze-on clamp adapter with a clamp of 28.6 will work.

I've been pretty happy with the used braze-on Shimano 105 FD 5504 9-speed front derailleur that I bolted onto my Trek 1100 when I converted it to 8-speeds last year. I think I paid like $2, plus shipping (about $10) from a eBay Seller. I put it on a braze-on clamp adapter. The braze-on clamp adapters come in different sizes, so if you buy an adapter, make sure that it's the right size to fit your bike's seat tube (28.6).

I bought the braze-on clamp adapter new, from a eBay Seller for about $7, including shipping (about $15 from the LBS). Later I got wise, and bought a couple of used Shimano RX-100 braze-on derailleurs for $2-$5 each, that came complete with braze-on clamp adapters (that are the correct size to fit my bikes). If you look on eBay, you can find good used front derailleurs complete with the braze-on clamp adapters for less than I paid for the new braze-on clamp adapters alone.

There's a Claris 8-speed front derailleur sitting here that I took off a Felt F-90 that I parted out. I'm not crazy about it, because it has a stamped steel clamp (marks up the seat tube). For that reason, I would not recommend the Claris front derailleur. It's in good used condition, but the clamp is 31.8, otherwise I would have offered to you.

Last edited by RoadGuy; 05-02-16 at 11:46 PM.
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Old 05-03-16, 08:48 AM
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You should prolly get a slight upgrade on this... as roadguy said just about any 8spd triple FD will work provided it fits your seattube. Of course go to you LBS if have a relationship or not a DIYer. If are doing it yerself, you can find these pretty cheap on amazon, and 2 of my favorite online shops(for selection/prices) are modern bike and niagara cycle, but there are countless others. if keeping the bike may be worth spending a few bucks more on a better unit, and maybe even the a RD to match.

lemme know if need some help and i can look it up for you later. post here fine, or p.m. me if you wish.
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Old 05-03-16, 08:50 AM
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If you can afford it, it's probably worth taking the bike to your LBS and ask them to fix it. While the derailer is nothing special, as #RoadGuy mentioned, getting the thing adjusted right is often worth paying someone else to do.
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Old 05-03-16, 09:20 AM
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This will work as a fine replacement:

Amazon.com : Shimano Sora 9-speed Triple Road Bicycle Front Derailleur - FD-3503 : Front Bike Derailleurs : Sports & Outdoors

Although note that you'll have to use an included shim to fit it on your seattube. For whatever reason Shimano doesn't make FDs that fit a 28.6mm seat tube any more.
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Old 05-03-16, 09:41 AM
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Originally Posted by dr_lha
For whatever reason Shimano doesn't make FDs that fit a 28.6mm seat tube any more.
They have been using the plastic shims for years, as there are now 3 main seattube sizes, and it's got to be far cheaper/easier to use one SKU to cover all, rather than 3. (in addition to Braze-on)
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Old 05-03-16, 10:57 AM
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Originally Posted by jimc101
They have been using the plastic shims for years, as there are now 3 main seattube sizes, and it's got to be far cheaper/easier to use one SKU to cover all, rather than 3. (in addition to Braze-on)
Sure, but I can still be sore about it. All my bikes have 28.6mm seat tubes, so it's shim or braze-on adapter.

BTW the shim that came with the last FD I bought was metal.
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Old 05-03-16, 02:58 PM
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Can you re-use that metal shim?
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Old 05-03-16, 10:26 PM
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I've tried using a 9-speed front derailleur with an 8-speed chain. It shifts, but it's hard to trim out the chain rub.

Get an 8-speed Claris or 2300 unit.
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Old 05-04-16, 01:59 AM
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Originally Posted by oldbobcat
I've tried using a 9-speed front derailleur with an 8-speed chain. It shifts, but it's hard to trim out the chain rub.

Get an 8-speed Claris or 2300 unit.
I'm using Shimano 400 Series downtube shifters (front is friction only, and rear is index only) with the 105 5504 9-speed triple front derailleur, and a 105 9-speed rear derailleur. No problems shifting or trimming for no noise/grinding.
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Old 05-04-16, 02:31 AM
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Originally Posted by RoadGuy
I'm using Shimano 400 Series downtube shifters (front is friction only, and rear is index only) with the 105 5504 9-speed triple front derailleur, and a 105 9-speed rear derailleur. No problems shifting or trimming for no noise/grinding.
With front friction shifter, chain rub is easily eliminated. With index shifting, it is more difficult.

Any road FD will work - even 10-11 speed ones, just they will have a narrower cage, so more chance of a chain rub. The shorter the chainstay, the less cross chaining is possible without chain rub. Road bikes often have very short chainstays. So even a 9 speed cage could be a problem, 10 speed cage even more so.

On the other hand, why cross chain on a triple?
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Old 05-04-16, 05:49 AM
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Originally Posted by pdlamb
Can you re-use that metal shim?
It has a sticky back on it, that I doubt would work for more than one use, but in principle it can be reused I would imagine.
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