2024 Factor Ostro sighted

[wickedstealthy]

Small update bike is finished in its fietst disguise and will do some maiden ride.

Final weight currently is 6,96kg but will go to 6.8 once all pieces are coming next months

If you are willing to compromise on functionality and slap some more money on it you could save on bottle cages, lighter tpu, 25mm tires instead of 28mm, full carbon saddle, lower wheels (now 56) or go for the scope wheels pare so in 45 weighing only 1120gr

The only things still a bit of a concern is the rotor alshu crank fitting on a t47a bracket. My mechanic used 2mm spacers on both sides while rotor tells only 2mm on one side. However the chainrings come far to close to the frame and the front derailleur is at its max of adjustment so that can't be right
We the 2spacers left and right no preload needs to be turned in more or less and front derailleur can be properly adjusted and space with the frame and inner ring looks normal.
Will give some update when others want to fit a rotor aldhu

[wickedstealthy]

Quick picture after first ride today

[X5SAE]

Looks great, mate

How was the maiden ride?

[Zstar88]

IMG_3174.jpegQuick picture after first ride today

How are you finding the matte finish? Does it look smooth, continuous and even or do you see variation in the colour from joins in the carbon fibre underneath?

In this video(45 seconds in) it looks pretty smooth but maybe that's an artefact of the video and lighting?
https://m.youtube.com/watch?v=uCTvSxSf4_8

[wheelbuilder]

IMG_3174.jpeg

Quick picture after first ride today

Very nice.

[wickedstealthy]

IMG_3174.jpegQuick picture after first ride today

How are you finding the matte finish? Does it look smooth, continuous and even or do you see variation in the colour from joins in the carbon fibre underneath?

In this video(45 seconds in) it looks pretty smooth but maybe that's an artefact of the video and lighting?
https://m.youtube.com/watch?v=uCTvSxSf4_8

I need to check. But you see variations in colour which I like. I didn't pay attention to the joints but I think they are smooth as typically such things take my attention. Come back when I'm home

[wickedstealthy]

Looks great, mate

How was the maiden ride?

Well second ride today honestly I think it's one of the best I have had. Not conclusive but the setup suits me perfectly and feels at first better then my lab71. The bar is heavier but man I like this thing. Feels sturdy and can muscle it around.
Somehow the setup is 10mm shorter then my lab71 although my drop is 10mm more and bar should have the same dimensions. Maybe going to try a 110x360. I like turned in shifters but too much as I see some looks off aesthetically

The only thing that bothers me is the crank not being centred. So something is not right.
If we fit the spacers like rotor tells 0mm drive 2mm non drive the inner chainring is dangerously close to the frame. Also adjusting the front derailleur seems impossible then
We fitted the opposite 2mm drive and 0 non drive and feels solid
However the crank is not centred as the end of the crank arms is left only 6-7mm max while almost 14mm right.
Need to find some answers here as I don't want a Shimano crank

[we51]

I had fitment issues on my Enve Melee with T47 internal and Rotor Aldhu carbon with p2max spider. The backside of the pm spider would rub the BB shell when the crank bolt was properly torqued. I had to lightly sand the back of the spider to flatten the raised text there and get the "road offset" axle for the Aldhu.

That put the chainrings right at the max outboard position for R8100, and I had to play with the drive side spacers a little to get it shifting from little to big ring reliably. It's not 100% centered at this point, but within a mm I think.

Anyway the Road Offset axle could be your solution if you can't solve it otherwise.

[hobe]

I just recieved mine in 58mm Black. The frame is 1008g with no hardware, which is heavier than I expected but I'm exactly sure how to extrapolate larger frame size weights from the quoted ones. The fork is also pretty heavy at 500g uncut.

[wickedstealthy]

I had fitment issues on my Enve Melee with T47 internal and Rotor Aldhu carbon with p2max spider. The backside of the pm spider would rub the BB shell when the crank bolt was properly torqued. I had to lightly sand the back of the spider to flatten the raised text there and get the "road offset" axle for the Aldhu.

That put the chainrings right at the max outboard position for R8100, and I had to play with the drive side spacers a little to get it shifting from little to big ring reliably. It's not 100% centered at this point, but within a mm I think.

Anyway the Road Offset axle could be your solution if you can't solve it otherwise.

I think that this seems to be a typical issue now coming for T47/T47a and 30mm cranks.
I saw that the chainline for the power2max is still good old 43.5 while the new Shimano is 44.5.
I also saw that the newer rotor rings for 12s where 0.5 more outside compared to the ones I still have 11s (at beginning of the dura ace release)
I'm not sure if the 24mm version has the same issues https://factorbikes.com/news/tech-talk- ... -ostro-vam

On top of that the factor site has some article on the t47a mentioning it's basically at the max to still allow road cranks to be fitted


This seems to be an endeavour again... bike industry ... Fitting the offset will solve it or going back to dura ace cranks where no reliable powermeter exists

[kode54]

I have no issues fitting a THM Clavicula SE crank with Hambini T47A bottom bracket. I probably can add a .5mm spacer on NDS to even out the crank.

[wickedstealthy]

I have no issues fitting a THM Clavicula SE crank with Hambini T47A bottom bracket. I probably can add a .5mm spacer on NDS to even out the crank.

Would you mind taking some pictures from the the underside and measure the distance of the inner ring to the frame ? I'm really curious how much space you have left.

[wickedstealthy]

:welcome:So the endeavour continues but as it stands now and basically rotor doesn't have a clue and claim they had many bikes with that combo I'm on the verge of ditching everything and swap to sram red.

We swapped today two similar combos with the one fitted having the older 11s rings with the newer version with 11-12s rings of rotor

Guess what ? The issue became worse

Fitting the crank with 2mm spacer on the drive side the crank arms are both evenly spaced measuring from the bottle cage bolts to the arms. So crank is really centred.
BUT if we do this with the aldhu rotor p2m combo with the latest 11-12s rings that have 0.5mm diff chin line we can't adjust the front derailleur such that th big-big does a chain drop in 80%. So we are there 2m+0.5m out of the di2 derailleur
The crank with the older chainrings just but barely works.

If we fit the crank way within the limits and as per instructions with 0-0.5mm this is how the chainrings look ... the bolts almost touch the frame and the crank is not centred anymore with both side differing 3.5mm

An accident waiting to happen

[Eggyeggs]

Has anyone got any aero numbers on this bike?

[Zstar88]

From the cycling news review:

The carbon fibre used on the down tube is so thin that you can flex it with your hand. You probably shouldn't, because you can damage the layers of fibres, but it shows how far the brand has gone to minimise the weight.


Anyone who has a new ostro confirm whether this is true in general (or indicative of a manufacturing defect in the particular bike being reviewed)?


https://www.cyclingnews.com/reviews/fac ... -the-best/