Rad Power Bikes Owners Forum

Rad Power Bikes Chat => Rad Modifications => Topic started by: Robert C. Albert on September 07, 2019, 05:43:35 PM

Title: JUIN TECH M1 BRAKES
Post by: Robert C. Albert on September 07, 2019, 05:43:35 PM
Has anyone tried the JUIN Tech M1 brake modification ?
Title: Re: JUIN TECH M1 BRAKES
Post by: Robert C. Albert on September 18, 2019, 09:24:58 PM
Well I guess we will know how good the brakes are.  Just ordered three sets for two 2019 minis and a new wagon.
Title: Re: JUIN TECH M1 BRAKES
Post by: Ryan on September 18, 2019, 09:41:14 PM
Well I guess we will know how good the brakes are.  Just ordered three sets for two 2019 minis and a new wagon.

Great, let us know how it goes and if they should be added to the recommended accessories thread. Are you doing the install yourself?
Title: Re: JUIN TECH M1 BRAKES
Post by: Robert C. Albert on October 15, 2019, 06:53:32 PM
The install of the M-1 hydraulic brake units from BOLTON BIKES was really easy since they use the original brake levers, discs and cables. They are smoother since both pads move in instead of only one moving pad on the standard Tektro brake units. They are not stronger since the standard units can lock the wheels pretty easy. These are not necessary but are a nice upgrade.  My bike is quieter when braking and has a little smoother brake action.  Since I am a fool for upgrades I recommend this one.  No real downside except for the $150.00 expense. Also no bleeding or maintenance is needed except for a future pad change and they use easy to get Shimano brake pads.  Bolton bikes has a nice video of the install procedure.
Title: Re: JUIN TECH M1 BRAKES
Post by: Ryan on October 16, 2019, 07:58:51 PM
The install of the M-1 hydraulic brake units from BOLTON BIKES was really easy since they use the original brake levers, discs and cables. They are smoother since both pads move in instead of only one moving pad on the standard Tektro brake units. They are not stronger since the standard units can lock the wheels pretty easy. These are not necessary but are a nice upgrade.  My bike is quieter when braking and has a little smoother brake action.  Since I am a fool for upgrades I recommend this one.  No real downside except for the $150.00 expense. Also no bleeding or maintenance is needed except for a future pad change and they use easy to get Shimano brake pads.  Bolton bikes has a nice video of the install procedure.
Thanks for sharing. I guess I wasn't aware you could use the same cables? And no maintenance? I thought with hydraulic brakes they would at some point need the lines bled. If you have some I'd be curious to see some pictures. Appreciate the balanced review!

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Title: Re: JUIN TECH M1 BRAKES
Post by: Robert C. Albert on October 18, 2019, 10:50:27 PM
Check out the M-1 brake install video on Bolton Bikes website.  Boltonbikes.com
Title: Re: JUIN TECH M1 BRAKES
Post by: Ryan on October 21, 2019, 09:15:21 AM
Here is the video for those interested. I have not seen anything like this before. Given this is an easy upgrade that most people could DIY I'm going to add it to my list of accessories page here: https://www.radowners.com/index.php/topic,104.0.html (https://www.radowners.com/index.php/topic,104.0.html)

I think the only consideration is the steep price, but something to keep an eye on. One of my minor pain points is adjusting the brakes on my RadWagon. It just takes some patience but it seems like these would be much easier to adjust to get rid of any rubbing.


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Title: Re: JUIN TECH M1 BRAKES
Post by: mailman390 on March 16, 2020, 07:42:05 PM
I bought the Juin Tech M1 on eBay.....paid $137 which was after taxes.
Title: Re: JUIN TECH M1 BRAKES
Post by: aegert on May 17, 2021, 11:21:47 AM
I bought the Juin Tech M1 on eBay.....paid $137 which was after taxes.

So I’m installing on the radwagon 4 and really having a tome getting the front not to rub any pointes.  I have the pads set at widest followed the bolton bid. Backs great front rub. Do not have any ideas
Title: Re: JUIN TECH M1 BRAKES
Post by: wkindred on May 18, 2021, 12:49:58 PM
I bought the Juin Tech M1 on eBay.....paid $137 which was after taxes.

So I’m installing on the radwagon 4 and really having a tome getting the front not to rub any pointes.  I have the pads set at widest followed the bolton bid. Backs great front rub. Do not have any ideas

check the brake rotor...you may have a slightly bent one.
Title: Re: JUIN TECH M1 BRAKES
Post by: wkindred on May 21, 2021, 05:54:53 AM
i upgraded my radrunner 1 brakes to the bolton (juin tech) m1 hydraulic calipers.

quieter, smoother and a more positive feel than the stock brakes.

as noted in the bolton video, less than 5 minute install.

the brake kit included 8 nitride m6 bolts with thread lock applied and 2 black cable-end crimps.

infinitely easier to install and adjust than the stock calipers.

2-day shipping from bolton!

though a bit pricey, i would definitely recommend this upgrade.

kyle @ bolton - keep bringing these great upgrades to the masses!
Title: Re: JUIN TECH M1 BRAKES
Post by: aegert on May 21, 2021, 09:12:24 AM
I bought the Juin Tech M1 on eBay.....paid $137 which was after taxes.

So I’m installing on the radwagon 4 and really having a tome getting the front not to rub any pointes.  I have the pads set at widest followed the bolton bid. Backs great front rub. Do not have any ideas

check the brake rotor...you may have a slightly bent one.

Yup figured that out that day. Did a sight bend back in truing up the rotor and then blessed silence lol.

Thanks
Title: Re: JUIN TECH M1 BRAKES
Post by: wkindred on May 21, 2021, 10:14:05 AM
I bought the Juin Tech M1 on eBay.....paid $137 which was after taxes.

So I’m installing on the radwagon 4 and really having a tome getting the front not to rub any pointes.  I have the pads set at widest followed the bolton bid. Backs great front rub. Do not have any ideas

check the brake rotor...you may have a slightly bent one.

Yup figured that out that day. Did a sight bend back in truing up the rotor and then blessed silence lol.

Thanks

great!

glad you were able to resolve!

Title: Re: JUIN TECH M1 BRAKES
Post by: SergeL on October 11, 2021, 11:24:03 AM
Seeking an experienced Juin Tech M1 user's opinion.

I have a RadMini ST 2 and I am considering this brake upgrade. I see Juin Tech M1 kits on amazon that come with new rotors too. Would it be advisable to change the rotors as well (front wheel manageable, rear wheel does not seem so manageable for me), or stick to the 180mm rotors already on the bike? If I stick to the original Tektro rotors, would it be better to use the caliper adapters already on the bike, since only one of the two Juin Tech adapters seems to be 180mm-designed?

Or maybe, if looking for a minimum of fussing, staying with the mechanical Tektro's, but replacing the Tektro E10.11 pads with semi-metallic pads? Oh, and I am over 200 lbs.

Thanks for your time!

PS: I notice Tektro pad sets don't come with new cotter pins; is this a testament to the quality of their cotter pin, or to their penny-pinching?
Title: Re: JUIN TECH M1 BRAKES
Post by: JTK77 on October 11, 2021, 11:48:36 PM
Juintechs are really not worth the money (widely accepted view which I agree). Much better to go for full hydraulics. XODs are cheap If you are looking for budget solution. These are way better and cheaper than Juintechs.
I prefer Magura MT5Es.
Title: Re: JUIN TECH M1 BRAKES
Post by: Altema on October 12, 2021, 05:35:19 AM
I have to agree with JTK77. If you are spending that much money, you may as well go full hydraulic and get braking performance that's significantly better. I've had the hybrid setup, and they had a little bit better fell than the stock brakes with the original pads. At first. Then they degraded after a few weeks and continued to get worse. When a woman stepped in front of me and I could not lock the wheels at all, I got rid of them and went back to the Tectro mechanical braked and upgraded the pads.
Title: Re: JUIN TECH M1 BRAKES
Post by: SergeL on October 13, 2021, 12:20:12 PM
I have to agree with JTK77. If you are spending that much money, you may as well go full hydraulic and get braking performance that's significantly better. I've had the hybrid setup, and they had a little bit better fell than the stock brakes with the original pads. At first. Then they degraded after a few weeks and continued to get worse. When a woman stepped in front of me and I could not lock the wheels at all, I got rid of them and went back to the Tectro mechanical braked and upgraded the pads.

The pad upgrade route is something I am also considering. May I ask what you upgraded to?

Thanks
Title: Re: JUIN TECH M1 BRAKES
Post by: Altema on October 13, 2021, 04:06:55 PM
I have to agree with JTK77. If you are spending that much money, you may as well go full hydraulic and get braking performance that's significantly better. I've had the hybrid setup, and they had a little bit better fell than the stock brakes with the original pads. At first. Then they degraded after a few weeks and continued to get worse. When a woman stepped in front of me and I could not lock the wheels at all, I got rid of them and went back to the Tectro mechanical braked and upgraded the pads.

The pad upgrade route is something I am considering too. May I ask what you ugraded to?

Thanks
They are Tectro E10.11 pads, available on Amazon here: https://amzn.to/3vLpCVO
Now that I look at the package, they are organic, but I do see bit of copper in the material. So, not sure if they really are an upgrade, but they work so much better than the hydraulics that I thought they were semi-metallic.
Title: Re: JUIN TECH M1 BRAKES
Post by: JimInPT on October 14, 2021, 09:42:31 AM
They are Tectro E10.11 pads, available on Amazon here: https://amzn.to/3vLpCVO
Now that I look at the package, they are organic, but I do see bit of copper in the material. So, not sure if they really are an upgrade, but they work so much better than the hydraulics that I thought they were semi-metallic.

They are available in a 2-pack (two pairs for two wheels) at a better price here: https://amzn.to/3CiI7DE but according to the recent price history from the Camels, they should drop below $20 again soon, so I'm holding off placing an order until they do, since I don't have a pressing current need.
Title: Re: JUIN TECH M1 BRAKES
Post by: TheRealDlo on October 17, 2021, 08:06:26 AM
Has anyone tried the JUIN Tech M1 brake modification ?

I ordered these for my Rad mini.  Even if they are the same power I just want the squeaky break noise to go away.  Also, the standard breaks feel rough.

Will report back ion a few weeks once installed and tested.  Going to measure stopping distance.
Title: Re: JUIN TECH M1 BRAKES
Post by: JimInPT on October 17, 2021, 10:53:59 AM
I have to agree with JTK77. If you are spending that much money, you may as well go full hydraulic and get braking performance that's significantly better. I've had the hybrid setup, and they had a little bit better fell than the stock brakes with the original pads. At first. Then they degraded after a few weeks and continued to get worse. When a woman stepped in front of me and I could not lock the wheels at all, I got rid of them and went back to the Tectro mechanical braked and upgraded the pads.

After thinking about it, wouldn't a hybrid design like this be a better option for folding bikes?  Especially for designs like the MiniST, where the brake lines are routed internally right through the folding joint, I don't think I'd subject fluid-filled lines to that, unless I made a decision it wouldn't be folded thereafter.
Title: Re: JUIN TECH M1 BRAKES
Post by: SergeL on October 17, 2021, 06:42:26 PM
They are Tectro E10.11 pads, available on Amazon here: https://amzn.to/3vLpCVO
Now that I look at the package, they are organic, but I do see bit of copper in the material. So, not sure if they really are an upgrade, but they work so much better than the hydraulics that I thought they were semi-metallic.

They are available in a 2-pack (two pairs for two wheels) at a better price here: https://amzn.to/3CiI7DE but according to the recent price history from the Camels, they should drop below $20 again soon, so I'm holding off placing an order until they do, since I don't have a pressing current need.

Interesting about the E10.11 as an upgrade, since they are what RadPower sell on their website - and might be the original pads on their bikes?
Title: Re: JUIN TECH M1 BRAKES
Post by: SergeL on May 20, 2022, 04:09:45 PM
Update, re original pads on my RadMini ST2. I gathered the courage to have a look at the original pads that were on the Tektro Aries (MD-M300) calipers and found out (after the red colour hinted at it) that the originals on my bike are Tektro P20.11s .

Where it gets interesting is the version of their pad compatibility chart I had lists them as "Metal ceramic compound high performance" pads. However, a 2021 version of the chart simply describes them as "Over all balance performance resin pad" (ref.: https://tektro.com/upload/Product/F_20210705110681iXimE7.PDF ). 

Now I promise I will stop editing this post. Unless I find yet more new information.
Title: Re: JUIN TECH M1 BRAKES
Post by: Tony on May 21, 2022, 08:14:42 AM
On my Mini 4. I fitted XOD hydraulic brakes after doing the motor and controller upgrade.  I now need new brake pads . I notice I?m a bit late with this as my front Disc/rotor is scored.  I can replace this no problem but while I?m at it, is it advisable/possible to fit a larger disc/rotor.     Tony
Title: Re: JUIN TECH M1 BRAKES
Post by: SergeL on May 23, 2022, 01:23:42 PM
On my Mini 4. I fitted XOD hydraulic brakes after doing the motor and controller upgrade.  I now need new brake pads . I notice I?m a bit late with this as my front Disc/rotor is scored.  I can replace this no problem but while I?m at it, is it advisable/possible to fit a larger disc/rotor.     Tony

I am still investigating various hydraulic options for my RadMini ST2, XOD being one of them (Tektro the other one). Out of curiosity, what length for the rear brake hose did you require?

Regarding the rotor upsize, you may have to deal with figuring what adapter or shims you would need to match the larger rotor diameter (and whether the fork can withstand the extra forces applied, which might be iffy with a Rad; caveat: based on what I have read so far.). I would probably stick to the same size rotor, maybe a notch up quality-wise, maybe a floating one.

YMMV
Title: Re: JUIN TECH M1 BRAKES
Post by: Tony on May 23, 2022, 03:43:35 PM
Hi Sergei, thanks for the reply. The XOD brakes came from Big Game Bikes. I?m pretty sure in our discussions Gareth advised I would need the long rear hose. It fits fine.
I understand the need to pack out/adapt the brakes to a bigger disk, just not sure if anyone here had done this. As you say maybe a floating disk would be a slight upgrade. Tony
Title: Re: JUIN TECH M1 BRAKES
Post by: djsplice on June 24, 2022, 03:47:00 PM
I just dropped these in my Rad Wagon 4, installation was a breeze! Need to use the spacers that come on the existing Rad Wagon brakes and use the included shorter bolts for the front caliper - 45 minutes done and done.

The feedback that others have provided seem to be spot on - here's my hot take.

My daily trip to drop off kids at school is about 3.5 miles each way with an elevation drop of 1000' on the way to school - I'm on those brakes pretty hard for at least 1/3rd of the trip to school with almost 300lbs on the bike.

When I was able to get the stock brakes adjusted perfectly, I'd say they probably perform equally as well as the Juin Tech M1s.

There were a few downsides with stock.

I had to adjust the stock brakes on the weekly to keep up that level of performance, such a pain. Not to mention the rear wheel protective shield that comes stock on the bike prevents you from easily accessing the rear brakes fixed pad adjustment bolt... So either take off the protective shield and risk kid clothes entanglement in chains/wheels or spend an hour removing and reattaching the plastic shield (seems like it wasn't intended to be removed so frequently if at all) so you can make the adjustment - in my case weekly...  :o

I also found that the stock brakes were super noisy - especially at the end of a hot downhill ride! Quite possible this could be due to less than perfect adjustment...

For me, even if the performance is identical between stock and the Juin Tech, not having to mess around with weekly brake adjustments is completely worth the spend.

As for full hydraulic vs hybrid (cable pull) hydraulic system, I can't really say. My guess is that a full hydraulic system is more like a next-level upgrade providing a better brake feel compared to hybrid. Seems like 4 piston hydraulic brakes would provide more stopping capability - perhaps they are more common in full hydraulic systems - the ones I saw were twice the price at around $350...

I've only got about 20 miles on the Juin Tech M1s so if the performance changes I'll be sure to pop back in here and give an update.