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2006 Trek 1500 upgrade to Shimano 6800 parts?

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2006 Trek 1500 upgrade to Shimano 6800 parts?

Old 04-22-20, 08:51 PM
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Trekathlete
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2006 Trek 1500 upgrade to Shimano 6800 parts?

Hello everyone and thanks for your help ahead of time!

i have been wanting a new bike for quite a while and even got a smoking nice Scott foil but ended up selling it because I just didnít ride it. So I have decided that I want to upgrade my old Trek alloy 1500 to more modern components.

I have just a few questions because most of the stuff I think I can handle on my own.

First, will I need a new rear wheel for 11 speed cassette? Currently it is a 9 speed on the stock bontrager select wheel set.

Second I will most likely need a bottom bracket because the bike currently has a triple on it and if I am not mistaken it is too long for a double? And what kind of bottom bracket might I have and need to look for?

Third I am going to need a front derailleur that mounts around the seat post instead of one that was meant for brackets. Hopefully they make those for this group set I am after.

also if there are any other pitfalls I might run into along the way. I am mostly going to keep my eye on eBay and try to by used last model ultegra stuff. I think buying in a full group set would be best but I am worried I might have the wrong front derailleur and bottom bracket so I might have to get those special...

well thanks again and look forward to your responses!
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Old 04-22-20, 09:02 PM
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Yes most likely will need a new rear wheel. New BB to match your crank. 68mm shell BB, 24mm spindle crank. For the FD you can get a braze on adaptor clamp to fit a braze on FD around a seat tube.
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Old 04-22-20, 10:16 PM
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Thanks for the quick reply...

thatís a bummer about the wheel. That will probably make it more expensive. Any good inexpensive wheel recommendations?
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Old 04-22-20, 10:35 PM
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As new wheels are headed towards disc hubs and thru axles, the used market would be a good place to look. Just make sure that they are 11 speed compatible. If you want new but not necessarily name brand, I like the Chinese carbon clinchers and Kinlin wheelsets on eBay/AliExpress.
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Old 04-23-20, 04:49 AM
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Originally Posted by Trekathlete View Post
...Any good inexpensive wheel recommendations?
Stick with the 9-speed you've got.
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Old 04-23-20, 06:50 AM
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If you like your wheel set you might be able to find a shimano comparable 11 speed freehub body and swap out the 9 speed one and pop on an 11 speed cassette/chain. It would be cheaper than a new wheel set but a new wheel set is definitely on the table if you're looking for upgrades.
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Old 04-23-20, 09:19 AM
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Just wondering what you are tying to accomplish with changing to 11 speed components? Have you looked a the cost factor? Do you have the necessary tools and know how to do the work yourself? Most of the time, it is better, cheaper in the long term, to buy a whole new bike with the new groupset and wheels. Shimano 8 and 9 speed groups are two of the best performing of all time. I bought a new 11 speed groupset, 105 7000, but, I bought it for a BNIB Soma Smoothie frame/fork. I purchased the frame /fork first because I saw it on ebay for a really low price. Same with the groupset. So, once I have the bike built, I will have somewhere around $1200 invested in it. If I look on ebay, or any web-site, I could not buy that same bike, already built, for that cost or less. In my experience, that is unusual. The downside, i am sure I will run into a couple of snags in the building process. Hopefully, that will just be the cause of some frustration and extra tool time, not any added dollars.
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Old 04-23-20, 01:57 PM
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Originally Posted by delbiker1 View Post
Just wondering what you are tying to accomplish with changing to 11 speed components? Have you looked a the cost factor? Do you have the necessary tools and know how to do the work yourself? Most of the time, it is better, cheaper in the long term, to buy a whole new bike with the new groupset and wheels. Shimano 8 and 9 speed groups are two of the best performing of all time. I bought a new 11 speed groupset, 105 7000, but, I bought it for a BNIB Soma Smoothie frame/fork. I purchased the frame /fork first because I saw it on ebay for a really low price. Same with the groupset. So, once I have the bike built, I will have somewhere around $1200 invested in it. If I look on ebay, or any web-site, I could not buy that same bike, already built, for that cost or less. In my experience, that is unusual. The downside, i am sure I will run into a couple of snags in the building process. Hopefully, that will just be the cause of some frustration and extra tool time, not any added dollars.
Im using a trek 5000 9 speed right now that I got off the used market. Whats your drive-train right now? I might be interested to buy some of your components ( especially RD if it is light and has the capacity for a triple since I am considering a triple conversion from my current 2 x setup).
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Old 04-23-20, 03:10 PM
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I really do not have components for sale at this time. I may have some 9/10 speed available in the next month or so. Definitely no 11 speed, I only have what I will be using. A suggestion, check out bikesdirect.com. They have some real good deals on very nice bikes. They have a Motobecane Gran Premio steel frame bike, with Shimano 11 speed, for around $900 IIRC. Big selection of various style of bikes with choices for frame/fork material. Free shipping and the bikes come about 90% built.
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Old 04-23-20, 06:05 PM
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To answer some of your questions.

I thought it might be less expensive to upgrade the trek to 11 speed components rather than buy the bike I really want that is around 3k. It would give me some time to decide to buy what I really want and need while updating my old steed.

I like the idea of swapping out the hub for an 11 speed hub. Sounds simple and inexpensive.

I have basically replaced all the components on bikes before except for the BB but I am sure I can manage and am ok to buy the necessary tools if I donít have them.

I would be more than willing to sell the old 9 speed components. They are mostly ultegra with a Shimano 105 triple crank.

Thanks again for all of your advice and ideas! I think this should be to difficult of a build. I think I saw a group set on eBay for 400-500 bucks. And then I just need to make sure the BB is correct and to get the correct free hub. I will look at bikes direct also but I like the idea of breathing fresh life into my trek.

I know many might not understand but I really hated the triple crank for years and this update will help give a lot more life to a bike otherwise destined to a new home.
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Old 04-23-20, 06:53 PM
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Newer may not be as good of quality as older.
Both my bikes are 3x9's. I can't imagine any 11 speed cassette without at least 3 unusable cogs that would come close to my needs.
IF you need lower gearing, get a 9 speed "mountain" RDER & 9 speed "mountain" cassette and you'll have far more gear options than a 1X11.
Your current RDER is spec'd to handle a 27T cog and in reality "might" be be good for 2-3 more.
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Old 04-23-20, 07:21 PM
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It all comes down to what you want to do and what pleases you. I certainly understand the desire to rebuild your older Trek. I have an early 90's Ochsner steel frame road bike that I bought new in 1992. Just about a year ago I finished re-building it, which included stripping it down to bare metal, wet sanding it out to 800 grit sandpaper and having it powder coated. I used a combination of original, good shape used, and new components/parts. I have definitely spent much more money on it than I intended to, and am still doing some changes. I am now thinking of switching from 105 DT shifters to Tiagra 4400,nine speed STI shifters. I just outfitted it with a used 46/30 crankset and 11-23 cassette that I already had on hand. I really like the gearing it has now, a nice tight group and plenty of range. I have found that "upgrading" to more modern components has just added to my enjoyment of riding the bike, and have no doubt that STI shifters will fit into that. I absolutely do not regret any of the things I have done with it, nor do I regret the cost. It was a great way to challenge myself and was a huge boost to my ability in, and knowledge of, bike mechanics. I have to add that BikeForums members were extremely generous and helpful with their knowledge, ideas and suggestions. Indeed, reading posts and looking at pictures of re-built older bikes was much of the inspiration to do the work. One picture of the bike after I cleaned, lubed and polished yesterday. Go for it!

My 28 year old Ochsner as it is today.
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Old 04-23-20, 07:22 PM
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Originally Posted by Trekathlete View Post
To answer some of your questions.

I thought it might be less expensive to upgrade the trek to 11 speed components rather than buy the bike I really want that is around 3k. It would give me some time to decide to buy what I really want and need while updating my old steed.

I like the idea of swapping out the hub for an 11 speed hub. Sounds simple and inexpensive.

I have basically replaced all the components on bikes before except for the BB but I am sure I can manage and am ok to buy the necessary tools if I don’t have them.

I would be more than willing to sell the old 9 speed components. They are mostly ultegra with a Shimano 105 triple crank.

Thanks again for all of your advice and ideas! I think this should be to difficult of a build. I think I saw a group set on eBay for 400-500 bucks. And then I just need to make sure the BB is correct and to get the correct free hub. I will look at bikes direct also but I like the idea of breathing fresh life into my trek.

I know many might not understand but I really hated the triple crank for years and this update will help give a lot more life to a bike otherwise destined to a new home.
500$ is a lot of money to put on a bike you intend to get rid of soon in favor of another. Have you considered getting a used bike version of the one you really want. I was recently looking at the used bike market but with a far smaller budget. There were LOTS of 10 speed and a few 11 speed bikes that could be had for less than 1K and many are high spec. Facebook marketplace and the apps like LetGo had better deals than ebay and you could almost always get the seller to take a 100 or 200 off the ticket price if you said you could buy soon. If you are putting 500 $ in upgrades .... maybe just sell it instead and add the money to the 500 to get a used bike that gets you closer to the 3k one you wanted. I would at least browse the sites to see the alternative option?

Last edited by oik01; 04-23-20 at 07:25 PM.
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Old 04-23-20, 07:24 PM
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Originally Posted by delbiker1 View Post
It all comes down to what you want to do and what pleases you. I certainly understand the desire to rebuild your older Trek. I have an early 90's Ochsner steel frame road bike that I bought new in 1992. Just about a year ago I finished re-building it, which included stripping it down to bare metal, wet sanding it out to 800 grit sandpaper and having it powder coated. I used a combination of original, good shape used, and new components/parts. I have definitely spent much more money on it than I intended to, and am still doing some changes. I am now thinking of switching from 105 DT shifters to Tiagra 4400,nine speed STI shifters. I just outfitted it with a used 46/30 crankset and 11-23 cassette that I already had on hand. I really like the gearing it has now, a nice tight group and plenty of range. I have found that "upgrading" to more modern components has just added to my enjoyment of riding the bike, and have no doubt that STI shifters will fit into that. I absolutely do not regret any of the things I have done with it, nor do I regret the cost. It was a great way to challenge myself and was a huge boost to my ability in, and knowledge of, bike mechanics. I have to add that BikeForums members were extremely generous and helpful with their knowledge, ideas and suggestions. Indeed, reading posts and looking at pictures of re-built older bikes was much of the inspiration to do the work. One picture of the bike after I cleaned, lubed and polished yesterday. Go for it!

My 28 year old Ochsner as it is today.

Pretty bike. Nice
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Old 04-23-20, 08:02 PM
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I have very much contemplating buying a new to me bike. And I actually did. I bought a Scott foil for $1700 with a newer 11 speed group set that I really enjoyed but I wasnít riding it for a variety of different reasons so I sold it for basically what I bought it for. After a year of riding it. I think $500 or so to update my current rig will make it last another 4-5 years for me or longer, I may not get rid of it. It was my first road bike and I have done so many rides and races on it. I really have been wanting to get a gravel bike but that might not be necessary.

also that is a very nice bike! Thank you for the insight!
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Old 04-25-20, 04:07 AM
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So just wanted to update everyone.

I went to my LBS and chatted for a few minutes about the project. Basically I probably wonít be able to install a ultegra crank on the bike but they have some nice FSA cranks that are 11 speed compatible that should work. It is due to the spindal type and size of the ultegra crank for an older aluminum bike. Just wonít work. But all the other parts should work just fine.

i will however have to check with another LBS about the freehub body for my wheel. I am hoping they might have one that is compatible with the wheel. This will be my first step in this project. So tomorrow probably I will take the free hub body off and take it into the shop and see what they might be able to do for me.

Then Iíll scavenge Facebook and eBay for the rest of the parts and buy a new compatible crank from the other LBS. I really will just need rear and front derailleur and the brifters. Brakes I donít mind keeping the same.

Iíll keep you posted if you are curious!
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Old 04-26-20, 02:57 AM
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If you want, Shimano 11-34 11 speed cassettes will fit on your current freehub body (the largest cog dishes in towards the spokes like 11 speed MTB cassettes do). I used to work at a Trek dealer and I'm relatively certain you can't get a new 11 speed freehub for that wheel, though don't quote me on that. Rebuilding with a new hub is a poor value, if you really need an 11 speed freehub just get a new wheel. Aside from that you shouldn't have any troubles with compatibility. You likely don't need to change your BB as a 2006 1500 should've had a 9 speed 105 crankset, which would be a hollowtech II external bearing crankset. With such the spindle is part of the crank, not the BB. Also Shimano changed their brake lever ratio very slightly with 11 speed (called Super SLR EV, your 9 speed group is probably what they call New Super SLR, and yes this is needlessly confusing) so the braking may be slightly worse than with a matching brakeset--I'd try it out and see how it feels for you.

Also, were it me I'd save my money and do 5800 or R7000 (105 level) on that bike. 6800 absolutely feels a bit better, but to me a older 1500 wouldn't inspire me to go all out, though if you just really love the bike do whatever makes you happiest. Personally I would probably run the original drivetrain as long as most of the parts worked well (especially the shifters), or until I got a killer deal on some more recent parts.
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