Help finding 200mm Centrelock Sram rotors in stock

[All Mountain Coaching]

Need a couple of these for tomorrow, the usual places are not showing in stock.

 

[ccrdave]

if you are thinking about fitting them to your levo the rear will not allow you to fit the magnet somebody on here showed a picture of a workaround though but just saying!

 

[All Mountain Coaching]

Oh shit, this is something i know nothing about. Yeah it's to fit on the levo. The magnet i take it is for the motor etc. Does that fit in the 6-bolt gap then? Do you know if it would work with a 6-bolt to CL adaptor, or the same issue?

 

[Kangr]

if ZyroFisher have stock of them, then run and ride should be able to order them for next day delivery

 

[ccrdave]

Oh shit, this is something i know nothing about. Yeah it's to fit on the levo. The magnet i take it is for the motor etc. Does that fit in the 6-bolt gap then? Do you know if it would work with a 6-bolt to CL adaptor or the same issue?

its bolted on with two of the disc retaining bolts and as far as I know you cant use an adaptor the lockring to hold the adapter on to the wheel cover over the bolts that hold the disc to the adaptor
i saw a picture of a magnet mounted directly to the disc with glue but personally, I would not trust that
the magnet is for speed sensing, the sensor is in a "pocket" on the inside of the chainstay, if they dont line up the bike wont run

 

[All Mountain Coaching]

Oh shit, so I need a new dtswiss 240 6 bolt hub for rear? Agh, expensive!

 

[All Mountain Coaching]

Oh shit, this is something i know nothing about. Yeah it's to fit on the levo. The magnet i take it is for the motor etc. Does that fit in the 6-bolt gap then? Do you know if it would work with a 6-bolt to CL adaptor or the same issue?

its bolted on with two of the disc retaining bolts and as far as I know you cant use an adaptor the lockring to hold the adapter on to the wheel cover over the bolts that hold the disc to the adaptor
i saw a picture of a magnet mounted directly to the disc with glue but personally, I would not trust that
the magnet is for speed sensing, the sensor is in a "pocket" on the inside of the chainstay, if they dont line up the bike wont run

Thanks for the info. Is there a thread or pics on the glue hack? I can't afford a new hub £240 and wheel build.

 

[ccrdave]

well I have seen one disc adapter on ebay that might work so its worth doing a search, you need one where the bolts that hold the disc to the adapter are not covered so you can bolt the magnet to it
I ended up swapping my dtswiss wheels I had bought for something else so I learned this the hard way!!

 

[ccrdave]

Thanks for the info. Is there a thread or pics on the glue hack? I can't afford a new hub £240 and wheel build.

its on the forum somewhere but I may be wrong here but if you dont get the magnet in the right place your speed cutoff point may change the bike works out how fast you are going by the number of times the magnet passes over the sensor in a given time if you move the magnet out a bit you essentially slow the pass time down a bit because the circumference is bigger.
probably wont make any difference even if im right but its worth it to consider

 

[All Mountain Coaching]

Thanks for the info guys. Spesh said they saw no problem glueing, but wouldn't do it for me. I'll try find that adaptor on eBay too.

What a faff. Learn something new every day

 

[khorn]

What about this type of adapter and then a 6 hole 200mm disk:

Problem Solvers Centerlock Adaptor | Jenson USA

Karsten

 

[ccrdave]

What about this type of adapter and then a 6 hole 200mm disk:

Problem Solvers Centerlock Adaptor | Jenson USA

Karsten

yes that one looks like it would work

 

[All Mountain Coaching]

How so?

What about this type of adapter and then a 6 hole 200mm disk:

Problem Solvers Centerlock Adaptor | Jenson USA

Karsten

yes that one looks like it would work

 

[khorn]

If you have a hub with center lock and want to use a 6 hole disk this is the adapter. Furthermore you will be able to mount the stock magnet to the disk and don’t have to glue another magnet. If that magnet fell off you will loose your engine support immediately.

Karsten

 

[khorn]

This is the stock magnet:

Specialized LEVO MAGNET HOLDER - Freeborn Bikes

Karsten

 

[All Mountain Coaching]

If you have a hub with center lock and want to use a 6 hole disk this is the adapter. Furthermore you will be able to mount the stock magnet to the disk and don’t have to glue another magnet. If that magnet fell off you will loose your engine support immediately.

Karsten

Brilliant. Thanks for that. Now I've just got to find a UK stockist and similar supplier.

 

[All Mountain Coaching]

This is the stock magnet:

Specialized LEVO MAGNET HOLDER - Freeborn Bikes

Karsten

Will I need this or can I remove the one that's on there.

Sorry so many questions. I don't have the bike to look at.

 

[khorn]

Will I need this or can I remove the one that's on there.

Sorry so many questions. I don't have the bike to look at.

Yes, it’s mounted together with 2 of the 6 bolts holding the disk. Very obvious when you have the wheel in front of you.

I have 2 set of wheels to my Levo so I bought extra disks, magnet and cassette so I don’t have to move all that every time I change wheels.

Karsten

 

[ccrdave]

How so?

on some adapters, the locking ring either covers the bolts or the rotor sits on pins and the locking ring holds it all together.
the one that Karsten found looks as though the bolt holes are outside the locking ring
Jenson will ship to the USA
these are the guys that make the product
Products | Problem Solvers
they may have a dealer in the UK. wish I had seen that one when I was struggling with my dtswiss wheels

 

[All Mountain Coaching]

What about this type of adapter and then a 6 hole 200mm disk:

Problem Solvers Centerlock Adaptor | Jenson USA

Karsten

yes that one looks like it would work

How is the problem solver one different to the superstar one?

Centrelock Adaptor - Superstar Components

 

[ccrdave]

Not a very good picture but i think the rotor sits on pins rather than being bolted on but not sure as the picture is a bit blurred

 

[ccrdave]

Kevin Hodgson - Superstar Components

 

[khorn]

How is the problem solver one different to the superstar one?

Centrelock Adaptor - Superstar Components

View attachment 6445

As David are saying, this one will not work as the disk is locked by a preassure plate together with the center lock nut. You will need an adapter that utilize separate bolts to fasten the 6 hole disk in order to be able to fasten the magnet holder.

Karsten

 

[All Mountain Coaching]

That makes sense.

How about this one?
Problem Solvers Center Lock Rotor Adapters

 

[ccrdave]

It says the bro380 is not suitable fir dtswiss hubs and the bro381 is sold out

 

[levity]

... I may be wrong here but if you dont get the magnet in the right place your speed cutoff point may change the bike works out how fast you are going by the number of times the magnet passes over the sensor in a given time if you move the magnet out a bit you essentially slow the pass time down a bit because the circumference is bigger. probably wont make any difference even if im right but its worth it to consider

I've assumed that the sensor works on a principle similar to the old types we used to use on the front wheel with non-GPS cycle computers and a magnet attached to a spoke, i.e., it just picks up a signal on each revolution, counts revolutions per min, and calculates speed based on wheel diameter. Thus, it doesn't matter whether the magnet goes by slowly or rapidly, the exact position on the wheel (or rotor) not being critical. We would simply adjust the magnet location to position it close enough to the fork for the sensor to pick up a signal. If the magnet position and the speed it went by the sensor were critical we could easily "hack" the Levo system to increase the top speed allowed!

To All Mtn Coach and others interested in using center lock hubs - you can just stick a magnet on a steel disc and go. If you want to use CL hubs with a 6-bolt rotor just use the Shimano SM-RTAD05 Disc Rotor Adaptor. See post #6 in this thread for a photo:
29" wheels on 2018 Levo Comp Carbon - EMTB Forums

 

[ccrdave]

I've assumed that the sensor works on a principle similar to the old types we used to use on the front wheel with non-GPS cycle computers and a magnet attached to a spoke, i.e., it just picks up a signal on each revolution, counts revolutions per min, and calculates speed based on wheel diameter. Thus, it doesn't matter whether the magnet goes by slowly or rapidly, the exact position on the wheel (or rotor) not being critical. We would simply adjust the magnet location to position it close enough to the fork for the sensor to pick up a signal. If the magnet position and the speed it went by the sensor were critical we could easily "hack" the Levo system to increase the top speed allowed!

To All Mtn Coach and others interested in using center lock hubs - you can just stick a magnet on a steel disc and go. If you want to use CL hubs with a 6-bolt rotor just use the Shimano SM-RTAD05 Disc Rotor Adaptor. See post #6 in this thread for a photo:
29" wheels on 2018 Levo Comp Carbon - EMTB Forums

Well im not sure but speed hacks sre done by altering wheelsize in software (making it smaller) in the extreme there was a guy who moved the sensor from the back of the bike to the front end of the chainstay and fitted the magnet to the inside of the crank arm, this removed the speed limit so passing the magnet over the sensor at a slower speed had an effect so my thinking was increasing the circumference of travel of the magnet by moving it further away from its origional postion would have a similar effect
But im just gessing here

 

[All Mountain Coaching]

hey guys i have a workaround for this issue. i only found out about the magnet after i had ordered enve m700E with CL hubs. spent $3k on the wheels and realized i had to run a shit 6-bolt rotor with them.

View attachment 6509

ill post pics of the adapter later.

I look forward to your response. As my bike will be off the road until I can get a work around

 

[levity]

work-around with Shimano SM-RTAD05 Disc Rotor Adaptor

 

[R120]

Don't know if this helps, but shimano make centerlock rotors with integrated magnet which are designed for Steps equipped bikes with integrated speed sensors:

Shimano Steps RT-EM900 Ice-Tech Freeza Rotor | ELECTRIC BIKE SPARES | Evans Cycles