FM1002 / FM1166 - 150mm frame

[FullCarbonAlchemist]

Did you install all of the thin metal spacers? Those don’t come with most headsets, they are there to compensate for less than perfect tolerances in the headset itself (and also in the frame, but I didn’t have any problem with a FSA headset on my 1002 and it doesn’t include spacers). They exist to prevent the top cap rubbing on the frame and you shouldn’t install more than you actually need.

Looks like you probably only need one, or possibly none.

[casual_build]

I am using OEM Carbonda on the bottom and Ritchey on the top (https://www.bike-discount.de/en/ritchey-comp-cartridge-drop-in-1.5-upper-headset)

I am using headset from Carbonda. question to those using same headset. do you have also such big gap between upper/lower headset and head tube?

Looking at the bottom... your fork cone is missing!

It should sit on top of your fork where the bearings meet the fork, I am using the one that came with the bike. I recommend you install that and it could be why the top sticks out too.

Also, check if there is any play in the headset by picking up the front end and dropping it on a hard surface. You may need to tighten the star nut more than you wanted too.

[BrokenTibia]

thanks for the reply.

As for the upper gap, I put 2 metal thin plates. I will remove them but the metal plate is so thin to fulfill the gap. anyway I will remove and share the result later.

As for the lower gap,  fork cone is installed, and no play at the headset, and the top cap bolt is tightened enough to have no play at the headset.
I will try another fork cone which should match with the lower headset if any improvement happens.

I will update soon.

[zilcho]

This is what the top and bottom gaps look like on my FM1001 with no shim. Zero play in the headset, just looks terrible.

[carbonazza]

This is what the top and bottom gaps look like on my FM1001 with no shim. Zero play in the headset, just looks terrible.

Was it with the headset they provided with the frame?
I've built a 707 with a Ritchey headset with cable exits in the dust cap, and had the same gap.

[Zomb1e]

do you have also such big gap between upper/lower headset and head tube?

Measure please thickness (height) of headset bearings. It seems that there is mismatch with the bearings and headset cups. For example upper part of headset may be designed for using 41.8x6.5 bearing, but actually there is 41.8x8 inside (but this is only my assumption).

[zilcho]

Was it with the headset they provided with the frame?
I've built a 707 with a Ritchey headset with cable exits in the dust cap, and had the same gap.

The stock Carbonda headset, and this is the case on two FM1001's actually (built an M and L).

[carbonazza]

The stock Carbonda headset, and this is the case on two FM1001's actually (built an M and L).

Did you report that back to them?

[BrokenTibia]

Hi guys,

I measured thickness with my simple caliper.
lower headset of Carbonda (52x7x45):7mm

I changed to FSA 1.5", 36Degree/45Degree ACB: 8mm thickness
FSA one can sit deeper in the frame because gradient part of the headset is longer. (see attached)

finally there is less gap for lower part. (see attached)


As for upper part I just removed 2 thin metal which helped little bit to make smaller gap. I will check other upper headset to reduce the gap. I do not see any gap at upper headset with my other 4 bikes.

[carbonazza]

We had a quiet period while everything was tapered 1.125/1.5, most headsets were compatible.
1.5/1.5 seems less standardised, the headsets I installed so far, looked all the same to me, explaining the gaps sometimes 
I guess Carbonda could tell the right height the frame was designed for.

[FullCarbonAlchemist]

I had a subtle version of that top cap gap with the Carbonda OEM headset (one metal spacer), but no real gap with the FSA no.55R.

[Medico]

I had my first ride yesterday on the fm1002 at our flat Netherlands. Build with a 160mm lyrik ultimate, rs superdeluxe ultimate, slx groupset and nextie  carbon wheelset with speci ground controll/vittoria meczal.

Must say doesn't bike that bad. Noticable steep seatstay when on the flats.
In comparison to my fm936 not nearly as direct when on the paddles.
But what I didn't expexted to be it so nimble, it goes true turns very easy. Also the medium is a bit smaller than the fm936, a large could had fit me also with 1.74 tall.

I think it will rock when I use it in the Alps
But when I'm going to do a lot of km's or climbs like a transalp I probelably take the fm936.



.

[casual_build]

Must say doesn't bike that bad. Noticable steep seatstay when on the flats.
In comparison to my fm936 not nearly as direct when on the paddles.

Do you know how much your FM1002 weighs? My FM936 feels very direct on the pedal but also weighs 2.5kg less. Yours looks pretty light.

By the way, I think you will love how well it climbs over rocks in the alps. It's very grippy on the ups

[FullCarbonAlchemist]

Do you know how much your FM1002 weighs? My FM936 feels very direct on the pedal but also weighs 2.5kg less. Yours looks pretty light.

By the way, I think you will love how well it climbs over rocks in the alps. It's very grippy on the ups

I’ll weigh mine tonight if I can string up my hanging scale correctly (bought one a while ago but haven’t used it yet). With the Fox 38 and 2.6 tires it’ll be slightly on the heavy side but should give the general idea. It’s definitely a lot lighter than my last 150mm bike, which had an alloy linkage…

[BrokenTibia]

I am using headset from Carbonda. question to those using same headset. do you have also such big gap between upper/lower headset and head tube?

here is summary for now.
I changed both upper and lower headset bearing from Carbonda to FSA.
By doing so gap between head tube to headset becomes less.

Carbonda upper headset does not have sealing. Thus, I will buy Ritchey  Drop in 1.5" Upper Headset or similar which has sealing between bearing and top cap since I do not plan using ACR (all internal cabling).