I created a purely mechanical Turbo Levo speed limit increase
- Thread starter jd_3d
- Start date
- Thread starter
- #602
Just a quick update here on the LSS. A few people had some issues with the clip ring that attaches the LSS to the rotor. I spent some time re-designing and prototyping it and have a new design that should both provide a more consistent clamping force (i.e., more tolerant of small dimension differences) as well as have a longer service life if taking it on and off frequently.
Here's the updated design:
Beta - Improved Clip Ring for LSS and LSS DT by JD_3D on Shapeways
When installing, please ensure the clips are fully engaged onto the rotor. After attaching the clip ring you may need to use your finger to engage each clip onto the back side of the rotor. To remove, simply pinch each clip to disengage them one-by-one.
Here's how it looks off the bike:
Here's how it should look from the back when properly installed:
Here's the updated design:
Beta - Improved Clip Ring for LSS and LSS DT by JD_3D on Shapeways
When installing, please ensure the clips are fully engaged onto the rotor. After attaching the clip ring you may need to use your finger to engage each clip onto the back side of the rotor. To remove, simply pinch each clip to disengage them one-by-one.
Here's how it looks off the bike:
Here's how it should look from the back when properly installed:
Just ordered mine after and interesting read 
New turbo Levo comp owner. Turns out my work have reduced parking by over a half and I'm never gonna get a space after dropping the kids off.
TL Commuting here I come!
Do people recommend changing the chain ring up front to give a better ratio for the higher top end speed?
Riding to work this week only mostly road and bit of canal path. I'm just riding a heavy bike sitting over the limit!
Thanks, J
New turbo Levo comp owner. Turns out my work have reduced parking by over a half and I'm never gonna get a space after dropping the kids off.
TL Commuting here I come!
Do people recommend changing the chain ring up front to give a better ratio for the higher top end speed?
Riding to work this week only mostly road and bit of canal path. I'm just riding a heavy bike sitting over the limit!
Thanks, J
- Thread starter
- #607
I guess we'll see as I've been running it for around a week so far. If you are happy with the original clip ring then stick with that. The forces on the LSS are really small so the clips don't need to be that strong. I made them thin for flexibility, but once all 12 are engaged it holds on tight.
Nasty Nick
Well-known member
Is my LSS wearing out? My decoy (e8000 motor) has done an odd thing a few times recently. It cuts the power momentarily and beeps three times. No error code on display and power resumes after I stop pedalling for a moment. It's weird.
- Thread starter
- #611
It's hard to say, I've heard of problems like that just due to electrical issues, etc, but it could be the LSS. If it keeps happening you could take off the LSS (or simply remove the planet gear but leave the rest on, and then put a magnet directly on the rotor). See if the problem goes away. You could also check to see if the planet gear is rotating freely and doesn't have a lot of play.
- Thread starter
- #613
Hi @AgileMike, you might be the first to try on the 2020. I've heard they are very similar to the 2019s, correct? As long as the brake rotor and rear hub are the same as the 2019s I think it should fit fine.
Just curious where have you found the Aluminium version. Does it work well ?
- Thread starter
- #617
Hi @Mina08. I've been running mine dry since I first designed it and haven't had any issues. However, we have a few people on here that have had success with a dry graphite lubricant. As for a teflon based lube, that could possibly work, you'd just need to make sure it is compatible with plastic (nylon in this case), otherwise it could cause dimensional stability or structural integrity issues. See here for more info:
Engineering Essentials: Lubrication Tips for Plastic Gears and More (Part 2)
- Thread starter
- #618
Hi @MJ_Levo. You can get the beta Aluminum version of the planet gear here:
LSS Planetary Gear v2 by JD_3D on Shapeways
However, I got one recently and found for the magnet I was using the fit was too tight, so I had to sand the inside hole with some rolled up sandpaper for ~5 minutes before the magnet would fit. I think for better compatibility I will create one with a slightly enlarged hole so that no sanding is required.
I haven't yet had a chance to install it on the bike, but when I do I'll let you know how it performs.
I've given this some thought and since the small planet gear will wear out well before the other parts I think the best thing is to release the design file for the small planet gear. That way people with access to a 3d printer can print their own replacement planet gear if theirs wears out.
I've added a download option to the product here (look for the download product button to get the STL file):
LSS Planetary Gear v2 by JD_3D on Shapeways
Of course you can still purchase it on that same page if you don't have a 3d printer.
@JoeJoe, you are welcome to try and print this small part in PEEK material and you can send it to anyone who wants one
Do you make this for the Kenevo?
Why you need for Kenevo? You can do via software with BLEvo or other Bluetooth tools...
because Blevo and othe BT apps void your warranty
Really? Are you sure? Who says this?
Please read here:
BLEvo, the best thing for your Levo and Kenevo - EMTB Forums
Your local shop has no way of increasing the speed of your bike to 28mph. The software we use won’t allow us to decrease the wheel circumference below 2000mm.
And most importantly even if we could, it would violate the Specialized Dealer Agreement and open us up to liability and litigation if someone was injured on the bike.
Unfortunately the lifted ban in National Parks won’t have much affect on whether or not Specialized releases an update to lift the speed restriction.
The ban has to be lifted on the county and state levels as well as federal before I see that happening.
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yes you are right the rotor is different, i will change it back to the sram rotor and check again
No disrespect to you or the app, i use it and i think its better than MC, i just dont want to risk loosing my warranty, i have had 2 motors and 2 batteries plus other stuff replaced. I know of 3 people who have lost there warranty due to an app and cheat devices, specialized can detect if the software has been altered.
Eljay
Member
Cool product!
Perhaps this has been addressed on this thread already, but why not just charge an extra few cents and sell it with magnet already installed?
Perhaps this has been addressed on this thread already, but why not just charge an extra few cents and sell it with magnet already installed?
I think it's because you're buying it from Shapeways, they are a 3D printing place.
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