I'm working on replacing the handlebar stem for Mini ST

[rjp]

Darrine90, I watched the video of DavidBrandNew installing BMX bars on an Engwe bike, not a Lectric. That Engwe bike has a threaded fork tube so the wedge type adapter will work on that bike. The Rad Mini has a non threaded fork tube and you have to use a star washer, spacers and a bolt to adjust fork bearing preload.

[Darrine90]

Okay got it! I think I will just use the extender as it seems to be working for Eric. RJP Do you think the one in the link below will work? only has one bolt but it seems to be pretty low so just maybe 21.5mm is enough to grab.


https://amzn.to/3OnEB0M

[rjp]

Darrine90, I looked at different ads and info on that riser and I like it. But I wouldn't use it on a short fork stem. That's just my take on the issue. Do as you please, good luck Russ.  I might have a different outlook if I had one in my hand to look over and test for fit.  You could always return it to Amazon if you don't like it.

[Darrine90]

Thank you, I'll give it a go! worse comes to worse I'll have to get an extender as well.  I believe Eric just needed to hammer down the star nut a bit into the fork to make it work.

[Darrine90]

The Satori Extender arrived today from amazon the minimum fork length you need is about 1.5 inches so I will need the fork extender for it to work. Kind of crazy doing this before my bike arrives but here is the parts list. Should be pretty cool if it all works

https://www.aliexpress.com/item/1005003411240585.html Fork Extender

https://amzn.to/3OnEB0M

https://www.skatepro.ca/en/370-39666.htm BMX bars 6.5" rise

https://www.skatepro.ca/en/372-35892.htm#show_image

[Eric7]

The Satori Extender arrived today from amazon the minimum fork length you need is about 1.5 inches so I will need the fork extender for it to work. Kind of crazy doing this before my bike arrives but here is the parts list. Should be pretty cool if it all works

These are some of the reasons I decided to forgo the steerer tube extender even though I already bought one.

My concern are:

1.  How strong the steerer tube extender is against twisting?  To be plain and maybe I am not using terms propertly, twisting is the force you use for steering left and right.  The steerer tube extender is just a few expanding washers with a plug at the end - all smooth with respect to twisting forces.  I think the connection is very strong against tension.  But how strong is it against twisting (steering)? Say, after you set it all up, you twist left on the handlebar against some pebbles on the ground, would the whole thing loosen?

2.  Also, the steering tube extender is a certain length.  30 mm on mine.  So say the stem extender has a hole of 40 mm depth.  it means that the real steerer tube (without the extender) would be gripped for only 10 mm (40 mm hole - 30 mm steerer tube extender) so the steering may be riskier (if the steerer tube extender is no good against twisting).  If the steerer tube extender is just a little thicker than the steerer tube, then the situation is worse.

These are just my thoughts and why I did not use it.  I hope my points come across.  I am on your side, of course, and I hope all my points are baseless and you are successful.

Please tell us how it goes.

[Darrine90]

Valid points.

I looked at the reviews on Ali express and they seem very positive in regards to the extender. I believe it expands inside the steer tube is how it works? However If the diameter is a bit off on the extender a double bolt stem extender should work as one bolt would be clamped onto the original steer tube and one onto the extender. Did you happen to take a measurement?

The satori clamping mechanism is a bit odd and is one bolt so if there is any discrepancy in diameter this will cause an issue. However if this is the case I can return the Satori for a double bolt extender.

I guess time will tell if this all works fingers crossed.

[Eric7]

The Satori Extender arrived today from amazon the minimum fork length you need is about 1.5 inches so I will need the fork extender for it to work. Kind of crazy doing this before my bike arrives but here is the parts list. Should be pretty cool if it all works

https://www.aliexpress.com/item/1005003411240585.html Fork Extender

https://amzn.to/3OnEB0M

https://www.skatepro.ca/en/370-39666.htm BMX bars 6.5" rise

https://www.skatepro.ca/en/372-35892.htm#show_image

I own a micrometer.  I measure the steerer tube extender diameter as 28.54 mm.  28.57 mm.  Two different measurements.

The steerer tube measures 28.54 and 28.53 mm.  Once again, two different measurements.

My micrometer has an error of "0.03 mm."  That is from the manufacturer.  I don't know what it means because I am used to error being expressed as "+/- 0.03 mm" or something like that.  Don't know what "0.03 mm" is any different from "+/- 0.03 mm."

I think possibly they are close enough to work without modification.  If they don't work, and if it was me (once again, you need to use your own judgment), I'll put the steering tube extender in a drill and use some sandpaper.  A few hundredths of a millimeter or even 0.1 mm should be pretty easy to sand off.  Best wishes for your success.

[Darrine90]

that's pretty darn close I think it will be fine. Thank you for the measurements!

[rjp]

Guys check out this new stem coming out. Check it out on you tube under DavidBrandNew turtleneckstem.        https://www.youtube.com/watch?v=35LiPkXvzDM                                                                         

[Darrine90]

My bike arrived and I installed the handle bars. I really do like the look of the bike now  still waiting on the fork extender but there is a solid hold with just the Satori stem extender. I was jumping off curbs and the bike feels pretty good. This is not optimal so to be safe I will install the fork extender when it arrives.

I do like the idea of how that stem folds but I will stick with the Satori, it looks super clean and functions really well for what I need. If you're tight on space height wise, you can always loosen the handle bars and bend the bars down or remove the front wheel.

[Darrine90]

Pictures

[Darrine90]

 

[Eric7]

My bike arrived and I installed the handle bars. I really do like the look of the bike now  still waiting on the fork extender but there is a solid hold with just the Satori stem extender. I was jumping off curbs and the bike feels pretty good. This is not optimal so to be safe I will install the fork extender when it arrives.

I do like the idea of how that stem folds but I will stick with the Satori, it looks super clean and functions really well for what I need. If you're tight on space height wise, you can always loosen the handle bars and bend the bars down or remove the front wheel.

Beautiful. You did a great job. It looks so nice.

How do you like the Satori extender?  I am thinking about putting it on my old 700c Road bike with drop bars to move the drop bars up a bit.

[rjp]

Darrine90, Is the LCD display in the way of you turning the top of the riser?