seatpost tuned a bit more now 166g
derailleur cages tuned too.


Dremeled cage

Dremeled carbon cage



Thats it for now but will be changing the brakes to Kcnc C7 some cables and eventually lighter wheels when funds allow.

cheers.

Update on the weight after more dremelling, now weighting 6.66kg 14.6lb.

The weight of the devil

Some nice work there mate, makes me want to get the tools out!

awesome job w/ that seatpost and saddle. for the saddle, did you basically cut / tear the leather and padding off and then clearcoat?

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Custom English Cycles CX Bike
BMC SLC01

Thanks.

The saddle was my sons, he had crashed and damaged it so I had it off him and took the cover off, its really smooth under it, so not much sanding on top was needed.dremel the cut outs and smooth off with wet wnd dry paper and I used car type clear lacquer. There is a little stub where the injection of the carbon moulding process in the centre but as I had cut the middle out I wasn't a problem, I have since cut out the back off the sadddle as on the last pic and its now down to 110g, the stripped cover weighted 30g.
Its very comfy with the centre cut out as it flexes alot so its not stiff and hard.

The seatpost is now down to 156g with more material taken from it, I wanted to get it down below Kcnc one.

I think it a nice weight considering the cost(free to me) and the weight of other saddles at that weight.

What a great job you've done to the bike. May I ask what tool you use to shape the seatpost cradle? Thanks.

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my S-WORKS and be here.

Amazing job! How are you liking the ride of the planet x frame?

Hi I used the off cut from the cut carbon steerer tube, its the right size then just cut in half, the slots were then ground cut to size, all just with a dremel tool cutting discs and various attatchments the same size as the rails.
The top of the post was also dremelled for it to sit on, you'll notice the thick piece of alloy still left from the cut off clamp, that must weight a bit so i got a hole saw that was almost the same size as the ID of the post and bored it out. It also took a few thou' of the wall lightening it even more.
I'm please how it turned out, lighter than the Kcnc one I was going to get for alot less.

I have only ridden the bike a few times but its very different compared to my old alloy framed bike. Being only 14.6lb very light, stiffer, soaks up road buzz and climbs very well always heading for the hilly route.
I love the frameset looks better in the flesh and great value.

cheers.

Impressive and creative job with the post...nice work. Nice to see people be able to to all that stuff on their own...

Thanks, I like to do things like that always trying to find ways of lowering the weight for less or free. Finding it hard now to cut more bits off nothing left that hasn't seeen the dremel, so it's back to changing parts now to shed more.

Just got some more new lighter parts.

Ritchey stem 90mm at 102g with Ti bolts.


Extralite ultrastar2 expander.



I removed the FSA CE 15mm top cap was 19g.


And got a Lizard skin neoprene headset cover at 1g.

Update I have removed the neoprene cover and have refitted the fsa top cap cut down to 5mm @6g from 15mm @19g
Bike now 6.6kg

Few more tuning mods.
Removed Mavic Ksyrium wheel stickers.

Ritchey WCS wet look stem stripped and cut out front cap.


Bars with the same stripped treatment.
Before

After

Shift lever clamp lightened with Ti bolts and grinded clamp.
Before

After


The stripped bars and stem look better with out the wet look and save some weight too. It's anodized under the gloss finish which meant no further finish was needed. I sprayed the front cap satin black for that all important stealth look.
Happy with the wheel stickers removed too, I wasn't sure how it would look, but think it look better with out them.
I was thinking of getting carbon clamps but the would be too costly to get here so i decided to tune them for less. bolts were from Pro-bolt and weight 3.5g compared to 7g per clamp .

Bike is now 6.55kg

rear mech tuned from 182g to 154g.

Primed

painted

Wheels primed

Painted


How the bike now looks, has put on 40g with the painted wheels now @ 6.58kg.





Thanks for looking.

OK, I just had to respond to this because this is true weight weenie and its core, hunting down those grams everywhere you can find them.

Thanks for sharing your process and obsession.

You sure showed that derailleur who is boss.

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Current Weight Weenies:
Scott CR1-SL 5.0kg Finished Here
Cannondale CAAD 9 - 6.44kg
Cannondale CAAD 5 Track - 6.55kg
Kona Kula Supreme Mtb - 8.97kg

Current Heavy Bikes:
De Rosa Primato 8.60kg
1988 Cannondale Criterium
Fuji Track Pro