bikemig 

I'm helping a friend with a 1992 900 series mountain bike Trek with a 1 and 1/8 threaded fork. She needs to get that stem higher and I'm trying to figure out the options.

Option A is to find a 1 and 1/8 threadless adapter. Those are hard to find. I found this from Performance, https://www.performancebike.com/fort...BoCijsQAvD_BwE

The other ones I've found are all one inch threadless adapters. Does anyone else make a threadless adapter for a 1 and 1/8 inch threaded fork?

Option B is to shim it. Is that an acceptable solution? I'm a little leery of doing this but perhaps I'm wrong to be concerned about a shim to take the fork from 1 and 1/8 to one inch. If this is a viable option, what should I look for?

Edit: Soma sells a shim: https://www.somafabshop.com/shop/273...rer-5554#attr=

maddog34

Plan C: get your friend to do Stretching Exercises on a daily basis, and get high rise BARS.

https://www.ebay.com/itm/29563893984...Bk9SR5qb4YmzYg

And i've found that the more upright a person sits when riding, the more PAIN they are in after a ride.
When their want to plant both feet flat on the ground while their butt remains firmly stuck to the extra-wide, too soft, Chafe-causing seat is added to the equation,... they are absolutely miserable during the ride too. Each pedal stroke brings a pained grimace to their faces.

storckm

I have a couple of 1 1/8 threaded bikes, one with a threadless adapter. I wouldn't use a shim for a quill stem. Maybe a different style bar with some rose and sweep would accomplish the same end?

Garthr

Bikemig, This is one of those cases where the US market isn't so great. Procraft as well as by.Shulz (German brands) makes them in both sizes and they're inexpensive in Europe. I'm quite familiar with many of European retailers who deliver to the US and in checking these it seems Rose Bikes offers the lowest shipping to the US "if" you're only ordering small items and not too many. The cart adjusts the price for deliver fees. You'll figure it out as to whether or not it's worth it for you. From my experience when I shop at such places, I go through the website and see if there's anything else worth buying, to maximize the bang for the shipping cost. There's many other German websites to shop from that have higher fixed shipping cost that are better if you order many items, like tires or something.

https://www.rosebikes.com/byschulz-a...-stems-2665754

bikemig 

Fair enough, but this is for a person with short legs and a long torso. So a 15.5 inch rigid MTB (a '92 Trek 900) works great in terms of standover height, but the cockpit is a problem. I need to stretch the cockpit out for this to work and tallish 1 and 1/8 quill stems or threadless adapters are scarce.

maddog34

"Tallish" and "Stretch" are two different things... I'd suggest that you at least figure out what you're trying to achieve before you start tossing parts at a bike.

https://www.ebay.com/itm/26634494152...Bk9SR6rF7JWzYg
etc..... there are dozens of them available. I have two in stock, personally...

Have you actually MEASURED a "1 1/8" threaded stem"?
they are ONE INCH OD where they slip into the top of the fork... plus or minus a tiny bit.
i also have many of those, in various lengths and rises... some with, and some without Canti cable guides.

I strongly advise that you GO TO A BICYCLE CO-OP/RECYCLER, or Local Bike Shop, and get what you falsely think is so rare.

also.. measuring from the crank center to the top of the seat tube is a now Obsolete Gauge of frame size due to the very frame type you have.. Measure from the Center of the steering head to the center of the Seat Post to correctly determine frame size. I understand that you referred to Standover height, but that is NOT the "frame size" .. (this is mostly to clarify for others that might read this thread... )

bikemig 

Thanks but I know the difference. I'm familiar with the other things you talked about as well but you apparently didn't read what I asked about and why. A threadless adapter makes it easier to play around with different configurations.

Edit: By the way, I did put you on my ignore list. It will save me the trouble of reading your weirdly condescending posts in the future, .

Schweinhund

this work? stem is stainless.

bikemig 

Thanks! That's very kind. I have one with roughly those dimensions on the bike. I am having trouble tracking down a threadless adapter.

Schweinhund

Do you need something different from this?

https://www.amazon.com/dp/B0B7L424X2

https://www.amazon.com/cyclingcolors.../dp/B07FH7CQ7P

bikemig 

Thanks yeah, I found one via performance as well. I imagine that's what I'll end up getting.

Garthr in post 4 hit the problem on the head.

veganbikes

I would look into high rise bars and maybe something with a little sweep back as the cheaper option and a better more reliable option is get a Cane Creek 40 in EC34/EC34 and a fork from Surly or really anyone who makes a threadless 26" fork and then you have standard parts and can get whatever is needed and that bike can go on for a long time. Plus with the new fork you might have more mounting options for racks and bottles and stuff sack cages and whatever else you need plus you might could find something lower travel (so you don't screw up the geometry too much) and get a little more comfort out of the bike.

I wouldn't faff about with adaptors and stuff like that. I would say check out Innicycle but their stuff is 1" only but It is the best solution to the problem of adapting threaded forks with modern threadless components.

maddog34

good luck "finding" what is not at all rare.

PS... i posted a link to what you are "having trouble finding". i also tried to help your quest to raise the cockpit, and other responders offered similar advice.

grumpus

I'm still trying to figure out why a female with a long torso should be on a small frame and looking for a tall handlebar, when a larger frame with standard handlebar would offer better reach (if stand-over wasn't too huge - plenty of kids used to ride bikes they couldn't straddle, and most of them didn't die).

cpach

Zoom Q-5, is available on the US's most popular bike distributor(QBP), I'm sure someone will sell you one!

The Forte also looks fine.

BTinNYC 

https://www.performancebike.com/fort...RoC4X4QAvD_BwE

2old

I don't see the problem since the adapter you referenced should function perfectly. AFAIK, there are a couple of sizes (lengths). The combo of adapter, stem length/rise and bars should place your friend wherever she feels comfortable. However, I would not consider a shim.

freeranger

One thing I would NOT do is to shim a stem. To get a bar up higher, why not put a "BMX" bar on it. Many different heights available and you wouldn't have to change the stem. 25.4 bmx handlebars - Google Search

bikemig 

Thanks, that's what I was looking for. My earlier search only turned up the Forte and I was curious what the heck was out there. And yeah QBP stuff is easy to find in a lot of retail stores/mail order places but for some reason this one did not turn up when I googled it. This is very helpful.

bikemig 

Yeah, I thought it was kludgy at best but I was curious whether that was an acceptable solution. The BMX bar is a little too high but a riser bar is easy enough to find. I'd like to start with a threadless adapter for a 1 and an 1/8 threaded fork first before playing around with the handlebars.

oldbobcat

Best idea yet, but be aware that there might not be enough flat real estate for brake and shift levers. Measure first. Your local dealer can also order riser handlebars from QBP and JBI.