Hope Head Doctor Into Steerer Tube Extender

A couple of months ago, I made a video about an adapter to extend the steerer tube by 50mm (2").
Steerer Tube Too Short? • Steerer Tube Too Short?
However, it’s missing the functionality of a headset cap (top cap) for adjusting the preload on the headset bearings, what it exactly means is that you could have back and forth play if the headset is loose, or your handlebar would not turn freely if it’s too tight, so tightening your headset bearings to the correct amount of preload is very important.
In this video, I’ll show you how I made the adapter clamped to steerer tube and then put in the Hope Head Doctor (adjustable star fangled nut) to the adapter.
You need 2 things:
1x M8 bolt, 4" x 1.125"
1x M10 flange nut
Put in the M10 flange nut into the adapter, nut facing downward, it should stuck in bottleneck. Use the short M8 bolt and screw it to the wedge, now put the adapter into the steerer tube and tighten the bolt. Make sure it is tight and solid before going to the next step.
Now you only have to put in the star fangled nut. I used Hope Head Doctor for a superior top cap and star nut system. (Easier to remove)
If you are having a hard time fitting in, insert a bolt and hammer it down.
And finally, put back everything and install the headset cap.
Remember to put in the correct amount of preload on the headset bearings, then tighten the stem bolts at the end.
Like I mentioned before, if the headset is too loose, you could have back and forth play, and if it’s too tight, your handlebar would not turn freely, so make sure you put in the right amount of preload on the headset bearings.
Recommended adapter:
Profile Design Threadless Stem Converter: 1" To 1 1/8"
• Profile Design Threadl...
profile-design...
Track: Bad Snacks - Summer in the Neighborhood
#steerertube #hopeheaddoctor #starfanglednut
Danyo Sports Channel Episode 54
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[@Peregrino.51]

I wish I had seen this video last year, would have saved me about 100 dollars in a new fork! Awesome job, I will be showing this to people with steerers too short.

[@mesco1989]

I just bought a new fork online but steerer was too short. Not happy at first then I found this video. I'm super happy. Now I've ordered a stem adaptor and Hope Head Doctor. Five star to you.

[@DanyoSports]

Great! Keep me updated!

[@faithwalk5926]

You made the cheapest extender the best one 👍

[@keanoscarermitano619]

Thank you so much for this one! I hope this works well with my SR SunTour DuoTrack 7007 Suspension fork for trail riding. Luckily my steerer tube is CR-MO so its going to hold up really well on the trails. Thank you once again!

[@newhomemech]

Simple and informative. Great video !

[@juliansiefert2330]

Great! I believe this will also work to convert my threaded fork to thread-less system with a new headset as well. Thanks

[@DanyoSports]

Yes, this will work, thanks for watching.

[@ogamogam6418]

Was it an 1inch threaded fork

[@juliansiefert2330]

@@ogamogam6418 my fork is 1 1/8 inch threaded fork.

[@JmieYoutube]

Thank you! Worked like a charm. Clever idea

[@AmazingChinaToday]

Should use a hex bolt insude the adapter, a Philips head screw can't create enough tork.

[@Butterfly07949]

The only thing that I would do differently would be to use thread lock locktight. This is so that with all the vibration that go's through the bike nothing can work loose over time! Great video thank you.

[@AP-xs4cq]

das war jetzt perfekt zu ende gedacht

[@CORSA_Kediri]

This is mindblowing. Thank you..!!

[@froggerc625]

Aliexpress vendors seem to have some products for this now, around $20 CAD with shipping, not sure how good they are.

[@fetB]

omg so simple but so good

[@joebertjustiniano7686]

hello.just need a clarification, so this means you dont use the flower anymore?

[@JarunsHobbyTV]

Thank You Sir🙏

[@skippyyoung7872]

Brilliant!👏👏👏

[@Cirofixie]

Amazing!

[@tl2uz]

very nice!!!

[@josephandretujon5981]

Is it not possible to replace the top cup of the stem adopter with the top cup of the headset?

[@datgoodstank]

great idea thanks

[@zucksuffer3858]

U think 80mm m8 bolt will work?

[@nathancohen275]

What product did you insert into the fork? It was a quill to thread less adapter, but it fit inside a 1 1/8 fork?

[@DanyoSports]

Yes, it’s a quill stem converter for threaded forks, they have size for 1 1/8” steerer tube forks.

[@Drago0900]

Ya know what, not bad. Though id be extremely weary about this for mtb.

[@x5963]

La tijera es over o estándar las tazas son over o estándar la potencia es over o estándar ?

[@kbuilds7287]

Sick video mate, however I was wondering if this is safe to do on a mtb? I believe it’s safe just for general cross country trail riding, but what do you think it’s capabilities are when I do small jumps with this steerer extender?

[@DanyoSports]

Thanks, the extender is safe as long as it is clamped to the steerer tube, riders rode these on their MTB in the 90’s, they are as strong as the threadless stems in the old days.

[@aleksandrbmelnikov]

Don't wish to ever remove extender? Ok! Scuff thinner end of extender, WELL. Butter with JB•Weld. Use hex-head long 8mm bolt (grade 8 or 10), with Loctite. Allow at least 24 hours to set before installing star-nut and mounting your forks. Extender is not going to loosen or slip.

[@angelogatchalian6540]

@@aleksandrbmelnikov agree on using loctite. i even used metal epoxy to secure my extender

[@christiansison9140]

is it safe when steerer is short about half inch to the stem?

[@captjerski4165]

how about 80mm, 45 deg handle post no need extender but I like your idea much more safer than the usual extender.

[@DanyoSports]

Yes, it should work but you’ll see a gap between the steerer tube and quill stem.

[@shahrilmohd7829]

genius

[@Saltydog547]

If the Philips head screw come loose and you are screwed. No way to remove the hope head doctor since you hammered it into the extender

[@djboneremix]

Very nice tutorial, I have now extended my fork in exactly the same way. Above the stem with the Head Doctor everything is correct and it holds without problems. Below the stem, however, the adapter in the steerer tube seems to shift because the headset loosens after every ride. Has anyone had the same problem and was able to fix it? best regards

[@DanyoSports]

Thanks, I would suggest to clean and sand the inside of the steerer tube and then tighten it again.

[@simonManleeeee]

I have similar issues

[@grumpus27]

Quill stems will often move slightly inside the steerer even when the wedge/cone is tight, it's a basic fault in their design that the top of the quill is a sliding fit and more often loose than tight, especially if the quill is painted. You could try using something like Loctite 603 to eliminate this movement (you'll have to remove all the paint to make the Loctite cure properly, or you could maybe just use ordinary CA "superglue" on the painted surface). There may also be movement between the extended steerer and the top bearing conical washer, so glue that on too once it's adjusted. This is a useful hack but it's probably not going to be as rigid/reliable as a single piece of metal of the correct size. You pays your money ...

[@rksquiers]

This seems like a great idea but the Hope Head Doctor would not fit inside the quill riser I purchased. Up to that point, it was going great. I tried everything nearly ruining my fork. What is the precise brand of quill stem that will work for the Head Doctor? Thanks.

[@DanyoSports]

Try to remove the O-ring (black rubber band) from the Hope Head Doctor, you’ll see the gap of the expander, cut out and expand the gap a little more, it should shrink the expander a little bit so you could then slide it into your quill riser a little more easier.

[@rksquiers]

@@DanyoSports I am now zero for 2 on finding a quill extender that will fit the Hope Head Doctor. Just ordered the Zoom Q-2 22.2 from Jensen and it has VERY thick walls so it was worse than the last one. Not even close to fitting in. Is there a specific quill extender brand that we know will work? Would really like to try this, but not sure what to look for. Thanks.

[@DanyoSports]

Sorry to hear that, I understand how frustrated it is to have 2 extenders not fitting the Hope Head Doctor. I suggest you to install a regular star nut, that way you don’t have to buy a third one, it’s more flexible and it would fit into your extender. If not, grind the inside wall of the extender, make it more room to fit the Hope Head Doctor. The brand name of my extender is Upanbike and you can get it from Amazon.

[@rksquiers]

DanyoSports Thanks again. I did buy a star nut and cap so hopefully that will do the trick. If anybody needs a slightly beat up but still functional head doctor, just let me know. 😊

[@robertblumencranz1457]

Does the top cap use a standard top cap bolt? In other words, could I use this top cap on a different fork with a standard star nut?

[@DanyoSports]

It fits on standard star nut but you need the Hope bolt to fit into their top cap.

[@cheewaiyow7469]

May i know this extended/adapter where can I buy? Any link please.. Rh

[@DanyoSports]

You can get it here: www.probikekit.ca/bicycle-handlebars-stems/profile-design-converter-1-inch-quill-steerer-to-1-1-8-inch-threadless-stem/10770283.html

[@andreivillareal3546]

What is the size of the flanged nut

[@Aaron_Higgins]

You're not going to be able to torque down a philiips head screw tight enough to hold the extension into a steerer tube. You're going to get someone hurt with this advice. At least use a hex head bolt if you have to. Do not use a philips head screw if you value your safety!

[@ogamogam6418]

Hey bro please help me out here i do have a 1inch fork but threaded but its 7 inch long while my steer tube is 7.5 or 8 inch long can i do the same you did or do you have any idea and i do love your videos

[@DanyoSports]

Hi, yes, the extender would extend the steerer tube by 50mm (2”), however you’ll need threadless 1 1/8” stem and handlebar.

[@ogamogam6418]

@@DanyoSports what about the headsets should i also change into thread less ones

[@DanyoSports]

You don’t need to change the headset: kzbin.info/www/bejne/q3SnmIBqf9ujqqc

[@TabibitoYo]

Is it okay if i use star nut instead of hope?

[@DanyoSports]

Yes, you can use a star nut instead of Hope head doctor (expander).

[@MrOasis32]

Where can I buy the tube? do you have amazon links? or ebay? thank you

[@DanyoSports]

They don’t allow me to post links, search “quill stem converter” on ebay or Amazon to find these adapters.

[@MrOasis32]

@@DanyoSports send link [e-mail]

[@gaetanolampugnani8250]

Where to buy the adapter or all needed for a fork too short?

[@DanyoSports]

You can buy all these parts from JensonUSA: Zoom Quill Stem Adapter: www.jensonusa.com/Zoom-Q-2-Q-5-Stem-Column-Adapters Hope Head Doctor: www.jensonusa.com/Hope-Head-Doctor

[@gaetanolampugnani8250]

@@DanyoSports thank you!

[@2hiperkemanci]

I wish you would show where to find M8 short bolt. M8 bolt is already short. So it should have been M8 "long" bolt. It is hard to find a fully threaded version of it. Also, your M8 bolt is allowed to screw in with bunch tools. Many M8 bolts even can not be comparable with a screwdriver.

[@DanyoSports]

There are many options, if you couldn't find the M8 bolt, use a 1/4" x 4" screw/bolt, insert it into the flange nut and wedge then screw a nut at the end to tighten it down.

[@bagussaputro170]

Hi.. Can I use with threaded fork?

[@DanyoSports]

Hi, you need threaded to threadless converter: Profile Design Threadless Stem Converter: 1" To 1 1/8" kzbin.info/www/bejne/q3SnmIBqf9ujqqc

[@bagussaputro170]

@@DanyoSports ok I will try. Thanks 🙏

[@chuchu00y]

hello very good videos, it is possible to do the same but with a threaded fork it is possible I hope you can help me thanks

[@gurdeepsanger4489]

Hi please can you confirm the type of bolt I need for the extender?

[@DanyoSports]

Hi it’s a M8 bolt, 4" x 1.125"

[@justinoliverio6697]

What is the size of nut and bolt if your extender is 25.5-28.6

[@DanyoSports]

The size of the bolt is always M8 and the M10 flange nut shoult fit too.

[@justinoliverio6697]

DanyoSports What if a M8 bolt is not available in your region

[@justinoliverio6697]

DanyoSports I followed all of this yet there are no M8 bolts here

[@DanyoSports]

If you couldn't find the M8 bolt, use a 1/4" x 4" screw/bolt, insert it into the flange nut and wedge then screw a nut at the end to tighten it down. The idea is to tighten the wedge on the extender.

[@justinoliverio6697]

@@DanyoSports thank you bro! 100k likes for you!!!

[@destinationjazz5729]

How do I take it back? Without the use of a hammer

[@DanyoSports]

Release the expander, find a 2” tube with the same diameter of the extender, put it on top, insert the stem bolt and cap and then tighten it, it should extract the Hope Head Doctor.

[@SleepSleep-fn6qo]

Where do we buy this product

[@DanyoSports]

You can get it from chainreactioncycles.com

[@SleepSleep-fn6qo]

DanyoSports I looked for this product did not find it on the site. Is it still available?

[@DanyoSports]

Here’s the link: www.chainreactioncycles.com/mobile/ca/en/hope-head-doctor-headset-adjusters/rp-prod911

[@xavierpatino8141]

Mine is a circle and I don’t have any tools that fit it, help please ?

[@DanyoSports]

Use 8mm allen key and insert it into the hole, tighten the wedge until it is solid in the steerer.

[@xavierpatino8141]

DanyoSports I tried that, it didn’t work it’s like Allen keys aren’t for it

[@DanyoSports]

Is it the same Hope Head Doctor? What is it?

[@xavierpatino8141]

DanyoSports never mind I got it figured out, thank you tho !!

[@triarjuna3970]

Is it suitable with carbon steerer tube?

[@DanyoSports]

Yes, the Hope Head Doctor is suitable with carbon steerer tube.

[@triarjuna3970]

DanyoSports hi thx for the info, is the adaptor same with ur part1 video?

[@DanyoSports]

Yes, it is the same adapter with the same fork, all I did in this video is to clamp the adapter into the steerer tube and then put in a star fanged nut.

[@triarjuna3970]

DanyoSports wah thanks, i just bought used fork, and its quite short for my bicycle.. finally i found the solution...

[@DanyoSports]

Nice, I hope this helps.

[@neopaza4120]

What is the size of the stem

[@DanyoSports]

The size of the stem is 1 1/8” x 22.2mm.

[@robertp7209]

Grease up all that hardware beforehand. If you ever want in the future to take it apart.

[@DanyoSports]

Thanks for the advice.

[@TabibitoYo]

What is the mm of that m8 bolt?

[@DanyoSports]

It’s a M8 bolt, 4" x 1.125".

[@TabibitoYo]

@@DanyoSports is 55mm will fit? I can't find 4" in shops.

[@DanyoSports]

No, 55mm is 2.16” and it wouldn’t reach to the wedge.

[@TabibitoYo]

@@DanyoSports then, can i use the original bolt that include's in steerer tube extender?

[@DanyoSports]

Unfortunately the original bolt is too long, I already tried and it didn’t fit.

[@rhiangraham4973]

So if IAm an inch n a half shy my steerer tube coming threw the neck- of my bike then get a quill n do this????some bike guy told me it would not work- funny/ looks like u made it work- he wanted me to buy new forks ! What a rat!!!!!

[@grumpus27]

I wouldn't do this hack for a paying customer because it's never going to be a proper fix, but I might use it on one of my bikes and watch it carefully.

[@weareallbeingwatched4602]

The problem with doing this is that the thing you have stuffed down the tube could fail by changing shape or shattering, or anything that causes the thread to fail, thus causing the steering column to fail. Pretty dangerous. Should not be used for "big hit" or trials riding.

[@JHESSA11]

just added 1 kg to this fork...

[@Dani-wn6wh]

You really should not touch that part of bicycles - your videos show that you are not able to understand what you are doing. You endanger yourself and people surrounding you or using bikes you have manipulated. Stop doing that!

[@Lars3]

Will this work with a standard stem cap and star nut, or does it have to be a Hope Head Doctor?

[@DanyoSports]

Yes, it will work on star nut but you’ll also need the top bolt, otherwise it will not fit properly.

[@Lars3]

@@DanyoSports Is that different from the standard top bolt?

[@DanyoSports]

Sorry, I misread your question. Yes, standard star nut, stem cap and bolt will work fine.

[@Lars3]

@@DanyoSports Thats great. Thanks so much for making this video and answering people's questions!

[@lazydrain]

Is it okay just using the extender itself? No installing of starnut?

[@DanyoSports]

You need headset preload, it’s doable but your fork could be loose if you haven’t tightened the headset and fork properly.