was struggling to keep the adapter from sliding back into the rim, came here to see you explain putting it under the tape. very helpful

I love having the option of either tube on my bikes. Love these.

Very helpful but learned the hard way on my own but I thought I check what's out there and found your video telling the viewers about it. I installed Presta in Schrader rim without the rim whole size reduction insert.. Upon a week worth of riding and I decided to put some extra air with pump and noticed whole tire flattened...I tried to force, it wouldn't take any. Later inspection of taking wheel off and checking inner tube, I noticed the rubber around the Presta valve was was halfway cut. The cut was caused due to loose Presta valve in the schrader valve rim hole causing the inner tube to wobble in and around the extra rim opening. All in all, this insert adapter is needed or otherwise the inner tube would rip around the valve. Again, thanks for the video and I'll run to buy a pair for the conversion.🙂

Thank you. That was very useful. I wasn't aware that they existed.

Your recommendation is actually relevant for some presta rims too! Some rims drilled for presta, have a larger schrader sized hole on the tire side. Why they do that, I don't know, but I use one of these valve adapters on such a rim (Mavic Open Sport) to better support the valve. I did have to cut the adapter shorter to fit, but haven't had a flat at the base of the valve since. My other thought is that Continental inner tubes come with a shouldered valve retaining nut. One face of the nut is flat which you use against a presta rim, while the other has a ridge which recesses perfectly into a schrader hole. I suggest using one of these nuts if using a double-wall schrader rim. The only downside with using these adapters is I find it's a little fussier getting the valve through the adapter: the sharp edge of the hole tends to snag threads on the valve when getting started. It's a minor nuisance, but I choose it over tearing valves off of tubes. Michelin tubes have unthreaded valve stems, and I suppose they'd be one way to address this, but it's not enough of an issue that I've bothered to try them.

Thank you ! I have a bike with 60mm Schrader valves. Very hard to find. This helps a lot.

Thanks for the vid. I wish they would offer those adapters with threads on the inside so I could screw it to my presta valve before I install the tube. That might help prevent loss. I just checked amazon and those are $7 for two of them now. Wow.

Very very helpful video. Thank you. 👍🏼

Hell what I do is just cut the tip off an old presta valve cap (i have plenty to spare) and screw it down upside down.

I use sticky cloth rim tape... It appears that they have a presta sized hole. Even if used on a Schrader rim, the tape supports the presta valve. Haven't had a problem with valve tears on the tube

Is it okay to use a longer adapter designed for a double walled rim on my non-double walled or single walled rim. I was in a pinch and had to do it that way. It works so far but maybe not a good idea in the long term? Thanks for your great teaching. You make a good teacher as you explain things so clearly and not all teachers have that talent. I liked and subscribed.

Even with the tape pieces, I find that the adapter falls out of place sometimes. What's wrong with putting the adapter on the outside? Thanks

good video

What are those pool little rims for? Are they for a foldable bike or something?

@Pedal Power, hi there, nice explanation. I accidentally bought a presta valve inner tube for my shrader valve rims on my Mtb. However I cannot find this insert, can you provide a link?

Could you use rubber o rings

Why not just use the schrader valve?

Can I go tubeless using this adapter? Appreciate any response.

glue it

Now $10

Better just to use schrader valves?