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Discussion Starter · #1 ·
I stripped out the very poorly thought out bolts that hold my Mary's ebb in place. The threads on the frame are fine, the bolt is 1) stripped 2) seized. I have replacements that actually have length and a head that if stripped I can still remove. Without being able to remove this stud my EBB cannot be properly tightened. This means I'm missing hours on the trail.

Regardless of the biocentric fix working or not Haro made a big error selling bikes with these bolts, especially on a steel frame. I am displeased with this and will deter me from looking at Haro in the future. There should be a recall on stuck frames, and a notice sent to shops saying to immediately replace all ebb studs with proper length bolts.

The only possible solution I have found besides this is brining my bike to a machine shop. I will in no way pick up the tab on a faulty design. This is not a warranty claim, just a venting rant, unless "Haro" wouldn't mind sending me a new frame. Please at least point me in the proper direction on how to fix my problem.

Haro :madmax:


I really do like the Mary SS. With a season of racing under my belt I feel that this is a great frame for anyone looking to try a 29er. Be cautioned to replace the bolts if they haven't been done already. This is the ONLY flaw I have managed to find with the Mary SS.

Happy Trails
-Sean
 

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seanmankiw said:
Don't even want to talk about the components on the bike for that picture. I took my racing parts off when I had it at college.
Wasnt knocking in fact impressed, love seeing the old Mags still in action. :thumbsup:

I built up a NS Surge with a 6" fork this year and was thinking about getting the stem but decided to go slightly longer 50mm instead of 40mm NS. :cornut:

Can you post some closer pics of the problem area please. :D
 

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seanmankiw said:
I stripped out the very poorly thought out bolts that hold my Mary's ebb in place. The threads on the frame are fine, the bolt is 1) stripped 2) seized.
So what have you done, stripped out the hex in the top of the bolt? You should be able to screw an easy-out into the bolt and back it out that way. Sears has a Craftsman 10 Pc. Screw Extractor Set with a couple different sizes that are probably appropriate to your problem. Never the less, it is no reason to have a melt down and a fairly simple problem to resolve. Good luck!
 

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Discussion Starter · #8 ·
Easy outs did no work. I have been working as a mechanic on cars the past 5 years, I know my way around tools. I just want to know if the niner bio ebb will fit the mary. It is a lighter design, and easier then the bolt style. If the biocentric ebb won't work I'll be in a machine shop next week.
 

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I have to agree with Momentum...the long bolt you have sticking out of your BB shell might cause damage to your frame.

We had very few if any issues with the EBB set screws on the Mary. I keep mine clean with the little grease on them and it's all good. That area picks up a lot of crud on any bike. It's a good idea to remove the bolts every now and then, clean them, grease them, and re-install. You can also blue loctite them if you are inclined to do so, but just make sure you still remove the set screws and clean them up from time to time to prevent seizure.

We don't have any experience with the Niner Biocentric system to comment on whether or not it would work on a Mary frame. It looks like a a cool system. Maybe you can post your thoughts on it if you choose to install one on your bike.
 

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seized set screw

I had the same problem just a few days ago. Set screw seized. I then bent my allen wrench. The set screw eventually stripped. I tried an easy out. It got stuck and then that tool broke off in there while I was trying to get it out. Finally, I did take it to a machine shop (at work) and we ended up drilling out the whole turduckin mess and re-tapping it. We broke an end mill and a carbide spade drill bit in the process. There was NO way I could have got it done at home. We had to mount the frame up on a mill. I'm trying through my local shop to get a replacement set screw and I'll be keeping them well greased from now on!
 

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downhilljill said:
I have to agree with Momentum...the long bolt you have sticking out of your BB shell might cause damage to your frame.

We had very few if any issues with the EBB set screws on the Mary. I keep mine clean with the little grease on them and it's all good. That area picks up a lot of crud on any bike. It's a good idea to remove the bolts every now and then, clean them, grease them, and re-install. You can also blue loctite them if you are inclined to do so, but just make sure you still remove the set screws and clean them up from time to time to prevent seizure.

We don't have any experience with the Niner Biocentric system to comment on whether or not it would work on a Mary frame. It looks like a a cool system. Maybe you can post your thoughts on it if you choose to install one on your bike.
What's the internal diameter of the BB? According to Niner you need a 55mm internal diameter for their new ebb to fit. It looks like a couple people have had good luck with sanding the inside of their bb shell or sanding the Niner ebb itself if the bb shell is just off.
 

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Niner Bio BB will fit Mary SS Shell (with sanding)

I can confirm a successful mount of the Niner EBB onto my Mary SS. It took a bit of sanding on the inside of the Mary BB shell to get it so that it would slide in easily but it worked!
 
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