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Re: Carbonda fm936 Thoughts
Quote from: carbonazza on September 02, 2020, 12:12:31 PM
The picture are quite blurred. Is it just paint scratches or it is bent ?
Did you check the frame around that area for a crack ?

Carbonda can provide you with a hanger, the shipping is cheap for such small item.

Before I was buying 2 hangers for each frames I did build.
And have a collection now as none of the riders needed it.
By experience it is useless, one is enough.
Maybe two if you are particularly unlucky.

Any further word on your BSA frame order?
September 02, 2020, 12:27:37 PM 		1
Re: Stone or Pass Quest Chainrings - AliExpress The Stone oval ring arrived today.  My first impressions are that is is very decent for the money, though I haven't installed or ridden it yet.

Observations (compared to the Absolute Black oval ring):
  • Clocking of the oval is the same as the AB ring
  • Stone ring: 60g, AB ring: 57g
  • Tooth profile is consistent with 'newest' Eagle narrow-wide profile
  • Stone ring: $34 shipped, AB ring: $89 shipped
  • It seems that there is some cost cutting by limiting machining on the back side of the Stone ring.  For example, the undercutting at the root of the wide teeth for dirt/grim shedding is present on both sides of the AB ring, but only on the face/outside of the Stone ring.
    Same can be said about the fancy CNC pattern work.  AB clearly spends a lot of time on both sides of the ring, Stone, not so much.
  • The Stone unit could benefit from some deburring on the backside.
    Your finger nail can catch a very slight burr on some edges inside the teeth and inside the cutouts in the body of the ring.  They are very small, but noticable.  You see nothing of the sort on the AB ring.  Instead, the AB ring has very well defined chamfers/break-edges added to all edges. Interestingly, on the Stone ring, the burrs are only present clocked on one side of every feature; this indicates to me that they had a clean-up pass in their CNC program, but their fixturing might be a bit lose so the ring rotates a few thousandths and the machining tool doesn't hit certain edges, and probably subsequently takes a bit more of a cut opposite that area.  I don't expect these burrs to have any negative effect on anything.  The ones on the teeth will be gone immediately upon riding once.

Here are some images:
https://photos.app.goo.gl/rHqmPJz8ZsrLQ3QR9
September 25, 2020, 10:15:09 PM 		1
Re: 29er hardtail Every Chinese hardtail I've built have had play between the headset and the frame.  It is no longer an issue ones everything is tightened down because the conical interfaces centering everything.  But the pre-load of the top cap is key before tightening the stem.  I also lightly coat the bearings in waterproof silicon grease to prevent creaking/chirping.
February 01, 2021, 11:30:41 AM 		1
Re: ICAN P9 build That's a really nice color. 
February 10, 2021, 03:53:18 PM 		1
Re: Groupset Stock (or lack of!) I ordered rotors from 007. Fast shipping, legit product. Price was really decent.
March 02, 2021, 02:27:31 PM 		1
Re: Carbonda FM909 I suppose I didn't consider the hassle of bearing service.  Seems to me someone needs to invent a quick disconnect for brake lines that doesn't leak when disconnected.

I've been fortunate with my headset bearings. It's nice and dry here in AZ and I've got 7 years/7-8k miles on mine. They're a bit lose now, but still fine for use.


EDIT: The disconnects exist!  But that price...

https://22bicycles.com/products/brake-break-hydraulic-disconnect
April 16, 2021, 08:41:28 PM 		1
Re: Carbonda fm936 Thoughts
Quote from: Colt__Seavers on April 29, 2021, 03:30:26 AM
that's a hell of a nice build! Very light as well. I wonder if you can share the part list with weights. Must have cost a fortune...
when did you order the Piccola? must be ages ago...

also I wonder how @Vipassana got his/her Piccola...

Ah, perhaps I was misleading. I have not built the bike yet.  Still in the planning (and saving) stage.  That is nearly the exact build I want to build when parts (and budget) become more available this year. Perhaps near the end of summer?

Maybe I should order the brakes now? If they are too hard to get, I will run XTR instead.

I and also waiting to learn a bit more about the FM909 as well before starting.
April 29, 2021, 08:11:33 AM 		1
Re: Carbonda FM909 With no technical justification, my preference is the 936; I just like the lines of the frame better.  More straight tubes and I just don't care for the pregnant cat belly down tube of the 909.  Hard to decide which is better though when you factor in more than looks... Having 2 bottle holders in the Arizona desert where I ride would be preferred.
June 02, 2022, 06:57:30 PM 		2
Re: New Lexon "spark"
Quote from: jonnybearback on July 11, 2022, 07:22:11 PM
are we hoping for too much from the Chinese hardware on this?

Exactly my thinking.
July 11, 2022, 08:28:41 PM 		1
Re: Carbonda FM909 I think the 52mm bearing on the upper race is to allow for cable routing through the headset?
July 20, 2022, 06:53:41 PM 		2