Chinertown
Chinese Carbon MTB => 29er => Topic started by: Dawnkeeper on March 24, 2015, 04:39:14 AM
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Hi guys!
Great to know there is such dedicated forum :)
I've recently recieved my IP-098 frame from Peter at XMIPlay (peter@xmiplay.cn).
Now waiting for some remaining parts and will start to build.
Will post photos later.
Size: The frame is 19" (L). It is the largest available.
Weight: 2,5 kg with shock (+/-10-20g).
Shock: 200x50
Rear travel: 100 mm (measured personally)
Fork: 120-140 mm (got 120)
Weave: 3K
Finish: Matte
Bottom Bracket: BSA
Dropouts: 142x12
Has anyone here already built 098 bike?
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Welcome! And nope, you're the first one with an 098 build but it's one of my favorite chiner frames, and quite a few of us have been looking forward to getting more info about this fairly new frame.
Can't wait to hear your thoughts on it's performance and see the final build. Do you happen to know how much rear travel the 098 has?
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Do you happen to know how much rear travel the 098 has?
Also, do you know the weight of the frame and what size you have?
I've been planning on eventually getting a full suspension chiner, and the 036 has been the frame I have planned on getting, but really interested in this 098. One of the things I've wondered is if it's a more "all mountain" bike like the Specialized Enduro, or if it's about the same as an 036 but just with the styling of the heavier duty Enduro?
Thanks.
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Do you happen to know how much rear travel the 098 has?
Also, do you know the weight of the frame and what size you have?
One of the things I've wondered is if it's a more "all mountain" bike like the Specialized Enduro, or if it's about the same as an 036 but just with the styling of the heavier duty Enduro?
Added some details to the first post.
Considering "all mountain" or not - I don't know, I simply liked the looks of 098 more than that of 036 :) I guess we will find out when the bike is complete. Supposed to look like one in the attachment.
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Hey guys!
Need an advice here. Excuse me for my bad english, lack of practice.
Was inspecting links on my ip-098 frame once again when noticed something strange... And don't know if I should be worried now or not.
So, in particular this link:
(http://fcdn.mtbr.com/attachments/29er-bikes/975824d1427314554t-dual-suspension-chinese-carbon-29er-0.jpg)
Well, two links symmetricaly on left and right side of the frame.
I disassembled it:
(http://fcdn.mtbr.com/attachments/29er-bikes/975828d1427315149t-dual-suspension-chinese-carbon-29er-1.jpg)
There is a bearing in the top tube, but if we examine the link from the inner side there is no bearing in the bracket:
(http://fcdn.mtbr.com/attachments/29er-bikes/975830d1427315396t-dual-suspension-chinese-carbon-29er-2.jpg)
And the link is assembled with this screw:
(http://fcdn.mtbr.com/attachments/29er-bikes/975831d1427315535t-dual-suspension-chinese-carbon-29er-3.jpg)
(http://fcdn.mtbr.com/attachments/29er-bikes/975857d1427316079t-dual-suspension-chinese-carbon-29er-5.jpg)
So, what do you think, is it ok?
My first thought was that bracket is actually missing a bearing may be or something.
It turns out that these two symmetrical links are actually stretching the bracket to the opposite directions a little bit until the bush is pressed against the bearing (there is still room for it to be stretched further and I actually can do so if I press hard with a thumb). The bracket is some kind of a spring? ???
Then ok, there is a bearing in the top tube, but what's its goal if the black cap of the screw plays a role of a bearing for the bracket part of the assembly?
(http://fcdn.mtbr.com/attachments/29er-bikes/975864d1427319531t-dual-suspension-chinese-carbon-29er-6.jpg)
Again, do you think it is intended to be assembled this way? Won't it cause excessive wear in the bracket part of the link? I'm really confused.
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I think it will be ok.
Reason, the linkage piece does the moving and it has the bearing...the other side, inside is part of the rear triange and it just moves linearly with give from the shock. Meaning it can be fixed as long as the part that moves, the linkage has some type of bearing.
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Hi, thanks for feedback.
The bearings are here:
(http://fcdn.mtbr.com/attachments/29er-bikes/976114d1427390100t-dual-suspension-chinese-carbon-29er-6.jpg)
I'm also concerned about the lateral stiffness of the frame. When there is a side force only one half/side of that short carbon bracket part countes it, the one that is being pulled from the frame, the other half/side cannot be pushed with this kind of screw/pivot conjunction, it will simply try to close the gap to the tube of the rear triangle. It's clear that carbon's stiffness is much greater than that of aluminium, but is it that great to allow use of only one half of that link?
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Not where I expected but still works. One side can be stationary as long as the other moves.
I am looking at your picture and the linkage is like a crank arm...the bearing you show is the bottom bracket.
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I get it, the only difference is that a crank arm cannot spin freely on its axis, they are one piece and can only spin in a bearing, whereas here nothing firmly fixates the black cap of the screw in a 'crank arm' as you called it. Can there be excessive wear because of this? On the other hand forces that are applied here are much weaker than in BB.
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Hi Dawnkeeper,
Do you have any news or updates regarding this frame? I am considering building out the 098, but am struggling to figure out the differences between the two frames. Is it more of an all-mountain bike, or is it more of a cosmetic difference?
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Bump.
Would really like an update on this frame/build.
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Hi guys!
Built it. Testing :)
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Hi Dawnkeeper,
Do you have any news or updates regarding this frame? I am considering building out the 098, but am struggling to figure out the differences between the two frames. Is it more of an all-mountain bike, or is it more of a cosmetic difference?
Do you mean compared to IP-036 frame? Hard to tell actually, never happened to build or ride 036 based bike or even see one with my own eyes.
No problems riding XC on 098 though.
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Hi guys!
Built it. Testing :)
Nice pic.. Super cool looking frame imo. Thanks for posting
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I can tell you, that the rear axle shipped with the frame is total crap. This one: http://i00.i.aliimg.com/wsphoto/v0/2014331910_2/MTB-bike-Alloy-Thru-Axle-front-100-15mm-rear-142-12mm-for-thru-axle-mtb-frame.jpg.
Poor quality and unscrews almost right away.
Got this one instead: http://www.chainreactioncycles.com/us/en/dt-swiss-rws-e-thru-alloy/rp-prod123930.
Fits perfectly.
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Thanks for the report on the DT axle - that was going to be my next attempt if my custom fix below didn't work. I'm glad to hear the DT axle is performing well.
I fixed my loosening rear axle by doing this:
1 - Blue loctite on the threads
2 - Two rounds of Gorilla tape around the nut. As in, around the smooth circular part, not the wrench flats. I did this to fill up the space in the bracket, allowing that little set screw to dig into it.
3 - Carbon assembly paste on the contact surfaces at both ends. Probably not doing anything, but I was going for overkill.
4 - Quick release lever oriented upwards, so it can't unscrew (it would hit the frame if it did). It's not actually contacting the frame, but if it did start to rotate counterclockwise, it would make contact and stop.
I drew a small orientation mark on the nut and bolt (silver line the first photo) and can see that this has not budged.The tape is neatly trimmed so you cannot see it. I am no longer angry at this axle!
(http://s10.postimg.org/wb05ev3k5/20150528_171426.jpg) (http://postimg.org/image/wb05ev3k5/)
(http://s10.postimg.org/o485nadhh/20150528_171452.jpg) (http://postimg.org/image/o485nadhh/)
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I used also carbon paste, but it started creaking. Now I'm using a old inner tube: http://chinertown.com/index.php/topic,306.msg5432.html#msg5432
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Ah, yes - It was your original idea in the inner tube post that actually gave me the idea for the gorilla tape. That's probably the main thing, securing the nut better within the bracket.
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Did you see there is a threaded hole in the drop out?
Perpendicular to the axle on the nut side.
You can put a 3mm(?) headless screw to tighten the nut in the dropout.
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Yes, it comes with a grub screw in it. Without the extra material around the nut it didn't effectively clamp the nut though.
Interestingly, note the indentations on a shimano brand axle nut, and I believe a single small indentation on the DT Swiss nut. That could make all the difference... Somebody could try modding the generic nut in a similar fashion.
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How stiff is this frame?
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And what size tire will fit in the frame?
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How stiff is this frame?
Well, it is, can't say that it is not :) Haven't noticed it bending too much. Still in one piece after about 500 km of xc and a bit of trail.
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And what size tire will fit in the frame?
I'm running 2.1 atm, but there is definitely room for 2.2. And 2.3 ...I think. Will measure and let you know.
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Will measure and let you know.
70 mm of spce to fit in the tire (2.7 inch) and a 65 mm (2.5 inch) tight spot to push it through first :D You won't be able to build a fatboy with this frame, sorry ;D
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That is about the same space as on my 256.
I have got a Schwalbe Racing Ralph 2.25 on a 30mm ID rim in there, anything bigger doesn't fit.
Has the IP-036 more space for a bigger tire?
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That is about the same space as on my 256.
I have got a Schwalbe Racing Ralph 2.25 on a 30mm ID rim in there, anything bigger doesn't fit.
Has the IP-036 more space for a bigger tire?
Here's Rocket Rons, 2.25, on 30 mm internal width rims on my 036, scale is in inches. Hope this helps:
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One thing I noticed, because I figured I would need to do it myself, if I went with this frame is the long neck.
The 19" frame was 15mm shorter than my 19" 057 for TT length