Turbo Levo Chainring Replacement

[wildsau2]

2 less teeth at the rear results in more speed than 2 more teeth at the front. At 80rpm its 44km/h to 39km/h. means, changing the cassette has more speed effect, but is more expensive.
@Mike Smith 10-36 is faster than 11-38.

 

[Mike Smith]

I'm happy with the 42 on the rear so ideally a 10 or 9 on the rear maybe an option

 

[Mike Smith]

This is interesting ....
"According to SRAM, the reason the company opted not to go smaller than a 10t cog was due to a shuddering sensation that occurs when pedaling such a small cog under load. As cog size decreases, the rotation of the links on a chain increases exponentially, which causes what SRAM’s engineers dubbed the “polygon effect” — a feeling that the chain is going from slack to taut, resulting from variations in speed as the chain transitions from one tooth on the cog to the next. "

 

[Levorunner]

This is interesting ....
"According to SRAM, the reason the company opted not to go smaller than a 10t cog was due to a shuddering sensation that occurs when pedaling such a small cog under load. As cog size decreases, the rotation of the links on a chain increases exponentially, which causes what SRAM’s engineers dubbed the “polygon effect” — a feeling that the chain is going from slack to taut, resulting from variations in speed as the chain transitions from one tooth on the cog to the next. "

Interesting! Thanks for the info!

 

[Tori]

Are any of these 36T replacement chainrings made from steel? I'm wanting to go for a really strong chainring - I'd prefer a steel one if possible, but I'm having a fair bit of trouble finding one to suit. There is a Surly 104 BCD option, but apparently it's best suited for single speeds?

 

[Mike Smith]

Unfortunately not Tori I also did tons of searching.. one reason I stuck with Praxis..

 

[DEADMEAT]

Are any of these 36T replacement chainrings made from steel? I'm wanting to go for a really strong chainring - I'd prefer a steel one if possible, but I'm having a fair bit of trouble finding one to suit. There is a Surly 104 BCD option, but apparently it's best suited for single speeds?

Specialized specifically recommend Hope chainrings, but honestly i think any quality single/DH ring will do. Just keep an eye on your chain stretch, buy a measuring tool, if you clean and change your chain regularly, you'll never wear out your sprockets

 

[Tori]

Specialized specifically recommend Hope chainrings, but honestly i think any quality single/DH ring will do. Just keep an eye on your chain stretch, buy a measuring tool, if you clean and change your chain regularly, you'll never wear out your sprockets

Ah well, considering I can't find a good steel chainring, and yep - you're right - I'm onto my chain checking and I'm replacing somewhere in between 0.75 and 0.5 stretch, I should be OK with an alloy chainring.

I'm considering a Wolf Tooth 36T Elliptical : Wolf Tooth 104 BCD Elliptical Drop-Stop Chainring I wonder if running an elliptcial will be nice with an EMTB?

 

[eFat]

I wonder if running an elliptcial will be nice with an EMTB?

Not with yours as the crank position relative to the chainring varies.

 

[Tori]

Not with yours as the crank position relative to the chainring varies.

Very good point.

 

[Rick]

Fitted a Blackspire Snaggletooth 36t chainring today, no need to remove the crank and spider, only the drive side pedal. A bit of a fiddle fitting the bolts, a found rolled up bit of sticky tape helps to hold the ‘nut’ in position underneath the crank spider when putting in the bolts. I’ll update later after a few rides. View attachment 1894

Hey Andy, I bought the same chain ring. I was wondering how the wear on the aluminium is working out for you. I have done about 300 kliks so far and have really just taken the color off the teeth.

 

[Kimmoi]

Fitted a Blackspire Snaggletooth 36t chainring today, no need to remove the crank and spider, only the drive side pedal. A bit of a fiddle fitting the bolts, a found rolled up bit of sticky tape helps to hold the ‘nut’ in position underneath the crank spider when putting in the bolts. I’ll update later after a few rides.

I think it’s easier just to remove crank, one bolt? No hassle fitting a new bolts, no tape.

 

[sdelen]

Can the front chainring be upgraded to a 36T on the Levo 2019 Comp Hardtail ?

 

[sdelen]

Fitted a Blackspire Snaggletooth 36t chainring today, no need to remove the crank and spider, only the drive side pedal. A bit of a fiddle fitting the bolts, a found rolled up bit of sticky tape helps to hold the ‘nut’ in position underneath the crank spider when putting in the bolts. I’ll update later after a few rides. View attachment 1894

Hi Andy,

I'm also considering placement of a 36T (Praxis)
But shop says they called Specialized and they said that the motor has been tuned for a 32T and they do not recommend replacing it with a 36T. Shop also said that battery will be empty faster when riding on the smallest rear cog of the 36T.
Are you still pleased with the 36T ? Is the brose still behaving the same and is 'character" of the bike still the same ? Any disadvantages ?

Kind Regards

 

[Peebee01]

I did the same replacement and for me the 36T feels much better. Previously I was too often in the smallest 2 rear cogs. Now it's a bit more distributed across all 10 gears.

Using 36T would increase speed and thereby resistance which would lead to the battery draining faster. But in practice I haven't noticed any difference.

 

[Mike Smith]

Same here no problems whatsoever

 

[All Mountain Coaching]

Could try Works Components. Local UK company:
Chainrings & Cogs

 

[lovetoride]

Also looking for a 36T any recommendations or is praxis the way to go?

 

[Mike Smith]

ideally Praxis steel as OEM but unfortunately they only do the stock 32T, I went down the Praxis line though in Alloy.

 

[All Mountain Coaching]

Next modification for me, was running a 34t on my trail bike so a 32t just isn't cutting it. Is there any funny fitments or BCD on the chain ring for fitment to a Levo?

 

[Mike Smith]

Next modification for me, was running a 34t on my trail bike so a 32t just isn't cutting it. Is there any funny fitments or BCD on the chain ring for fitment to a Levo?

104mm BCD
How to here LINKY

 

[All Mountain Coaching]

Cheers for that.

I've never had a chain guide on a bike before, not needed to with a clutch mech and narrow wide chain ring.

I quite fancy the rental ultralight which isn't narrow wide, do you think chain retention with just a guide would be enough?

 

[MylesKenevo]

Just done my first ride out with the stock ring and found I was out pedalling so think I'll move up to 34T, as you have found I can only source Alloy ones, also the stock steel one has threaded inserts so you'll need chainring bolts which also means the spider has to be removed ! The chain guide is slotted which will allow some tolerance on different sizes.

How do you get the spider off? i have used bb key tool to remove the locking nut but cant seem to release the spider...??

 

[Gogogordo]

You will need a crank puller.
a simple 3 1/2 or 4 inch one will do .
Can get them at Harbor freight or Amazon cheap .

 

[All Mountain Coaching]

I noticed today that all 4 chain ring bolts were loose.

What's the trick for tightening them up as you can't get a screwdriver in the back to hold the bolt?

 

[ccrdave]

I think the chainring is threaded

 

[Stumpy]

I noticed today that all 4 chain ring bolts were loose.

What's the trick for tightening them up as you can't get a screwdriver in the back to hold the bolt?

I used these

 

[mccltd]

Can the front chainring be upgraded to a 36T on the Levo 2019 Comp Hardtail ?

Same question, anyone got an answer?

 

[rosswa28]

Same question, anyone got an answer?

Yes they can take a 38t chainring with original guide, works very well indeed?

 

[Peter Hill]

Nice work @AndyActual. So you simply remove the pedal, then chainring bolts to take off the existing Praxis ring then pop the new one on? That sounds much simpler than I expected!

Hi Rob, I see in your latest video about the Levo you have a 36T chainwheel fitted, how do you find this? I have just put some shorter 150 mm Miranda Kappa 0 cranks on but not been out yet, so will report back on those. What length cranks are you now using on your Levo?