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29er / Re: FM1002 / FM1166 - 150mm frame
« on: November 24, 2021, 02:34:02 PM »What fork is that? The adjusters/valves on the right leg look familiar but I can’t remember which brand that is.Formula
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What fork is that? The adjusters/valves on the right leg look familiar but I can’t remember which brand that is.Formula
I am running a 160mm bike yoke revive on a large frame and it fits perfectWhat’s your saddle height?
Starting to look like a bike:-)Thanks for the report. How do you compare this VS LCFS911?
nh185, do you have some links to share?
Sure thing!
For the crankset the Fovno Phantom seems to be a pretty solid choice. Either comes with GXP mount or GXP mounted 104 BCD adapter. Comes in a range of colours and looks quite well machined.
https://www.aliexpress.com/item/4000579042697.html?spm=a2g0o.productlist.0.0.78b81246WRODvB&algo_pvid=64902c25-59dc-4087-924f-9ab7fe81a47e&algo_expid=64902c25-59dc-4087-924f-9ab7fe81a47e-1&btsid=0ab6f82215914855710491854e434f&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_
If you want to go proper budget build the IXF crankset seems to be a pretty solid choice aswell, build wise I think you can not fault them but theyre certainly no eyecandy unlike the Fovnos.
https://www.aliexpress.com/item/32993443563.html?spm=a2g0o.productlist.0.0.6be762457cwdAx&algo_pvid=33c1f1ab-fd25-4a52-b476-fb9344a5c9d4&algo_expid=33c1f1ab-fd25-4a52-b476-fb9344a5c9d4-0&btsid=0ab6fa8115914857606664241e7f0a&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_
As for the cassette an 11-50 12 speed would be the way to go here. These guys here claim that their cassette only weighs 399g - I dont know whether thats true but the cogs kind of look like the GX eagle cogs hence the weight could be legit.
https://www.aliexpress.com/item/32961018282.html?spm=a2g0o.productlist.0.0.6b946966FoP3EU&algo_pvid=3ec8587c-fd9a-4f14-a434-441c235a0692&algo_expid=3ec8587c-fd9a-4f14-a434-441c235a0692-33&btsid=0be3764515914859315868173e81e1&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_
If you wanna go proper budget on the cassette this would be an option. You gotta live with the weight though.
https://www.aliexpress.com/item/32964520421.html?spm=a2g0o.productlist.0.0.6b946966FoP3EU&algo_pvid=3ec8587c-fd9a-4f14-a434-441c235a0692&algo_expid=3ec8587c-fd9a-4f14-a434-441c235a0692-9&btsid=0be3764515914859315868173e81e1&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_
As far as derailleurs and shifters are concerned I already posted the link of the S-Ride in my post above.
As for the chain you could use pretty much any 12 speed chain on Aliexpress or go for proven quality and buy a KMC.
hey GrayCactus
any news from your build ?
The new bike still hasn't yet quite reached its 'final' state, so the upgrade-testride cycle continues.The key is in the details! Thanks for your detailed quotes!
The latest test ride went close to expectations. Not a great ride, as the trails were still wet from rain from the days before, and not familiar with the new tyre etc.
Firstly, the longer fork and taller front tyre definitely made the bike feel noticeably taller. I was surprised at the difference. I think it was barely 6mm higher at the bottom bracket - though I did re-measure it, and it was closer to 445 than the earlier measurement of 443. I didn't hit my cranks once, riding the same trails as the previous ride, including a lot techy climbing. And I was noticeably worse at cornering too. Perhaps the wet roots and rocks contributed though. Not sure. But this has confirmed my approach with this bike, to lower it below the frame's standard specced geo, with a 10mm shorter-than-spec fork and lowered rear end via a shortened shock. I still plan to start with 2.5mm off the shock's stroke/length, which translates to a ~8mm lowered rear end (to about 142mm travel), but I could end up droping it further again. My only reservation about going further is that the angles might be getting a bit slack - I don't think my trails or riding style would benefit from a HA much lower than 66.5. I'm glad I went for a 140mm air shaft for my fork too, as a 150mm fork would've made the bike too tall (or too slack, if I dropped the rear end to bring it back down).
For the first time, I noticed the feeling of being a little further back, which will get worse when I lower the rear end. However this was only on a super steep climb (Probably 15%grade), so I don't think it will be a problem.
I thought I put 75psi in the fork, but I think I was mistaken. I might've put the recommended 85psi in, just in case it bottomed with the no volume tokens in it. Got over halfway through the ride and noticed the fork barely used 110mm of the 140mm. I dropped it to 75psi for the rest of the ride, but didn't hit anything big, so it barely used any more travel. I'll leave it as is, and see how it goes on some bigger stuff.
With the rear shock on full volume, I went for low sag initially, and pre-ride settled on 160psi to get just under 25% sag. Mid way through the ride, it had used only 44mm stroke (of 56mm, so about 80%), so I dropped it to 155psi. Was still around 44mm at the end of the ride. I'll drop it to 150psi after I shorten the shock. As expected, the McLeod shock was awesome at erasing bumps, while at the same time not ever feeling wallowy. I thought the not-high main pivot on this frame could result in a bit of Bob, but it is near non-existent.
With the wet trails, i was a bit hesitant to really put the new DHF tyre into any big leans, but in hindsight it barely slipped at all. Perhaps the next (hopefully drier) ride will be better, and I have more trust in it.
The latest round of upgrades added more weight (mainly the tyre). Bike is now 13.44kg, which is probably as heavy as it will ever get. It will lose a little weight when I go tubeless, and a slightly lighter stem.
What a difference a week makes.Any news?
Since the previous weekend, I have made a few changes:
* Put on new crank, chain ring and old xtr trail pedals on (see above post)
* Unbolted all the pivots, greased the bearings, seals, under the bolt heads and put loctite on the bolt threads. No more creak
* Installed a 150mm one-up V2 dropper. Some advice: route the dropper post cable BEFORE installing the bottom bracket. It was probably the trickiest bit of cable routing I've ever done. Capgo noise protection was put over the cable inside the frame. When I installed the dropper remote, I had to move the fork's oneloc remote lockout - only place I could put it was above the bar on the right side - it looks a bit weird but works well, so I think I'll hold off on getting a twistloc to replace the fork remote.
* Removed 2 volume tokens from the fork. When i had a look in it, I discovered that the fork had 3 tokens. Now running only one token, with the same air pressure as last weekend, at 75psi, which is about 10psi under recommended
* Increased the air pressure in the rear shock. Last week I was running only 120psi (~40% sag) in an attempt to use most of the travel on my old low volume shock. I used about 90% of the travel with this setup last weekend, but the ride was overly firm. I figured it was firm because was riding too far into the travel (where the spring rate ramps up), so I added 10psi this weekend, which reduced the sag to just on 30%, maybe 32%.
Went for a 2.5hr trail ride yesterday. Similar to last weekend's ride, but a bit longer. A few observations:
* Fork used just under 120mm of the 130mm travel. Gonna leave it there - at least until the longer air spring arrives.
* Rear shock used 90% of its travel, about the same as last time - however, i did go a bit harder this time, went over a few jumps etc. Rear end seemed definitely more compliant with the higher pressure, less sag. Gonna add another 5psi to see if that improves things further. Bike is still not exactly plush - it definitely needs a more linear shock (i.e. higher volume).
* while not plush, the bike still floated extremely well through the rough stuff, holding more momentum than i think i've ever held through those familiar trails.
* with the short fork, the steering certainly is quick. almost XC-bike quick, esp around the twisty stuff, the agility was surprising. I think it could have something to do with 51mm offset in the fork. Never ridden a fork with that offset before - my xc bike is the shorter ~44mm offset. i was very much enjoying the initial turn in, setting up corners, the adjust-ability this bike has. it just seemed much easier than i am used to, to get the bike entering turns exactly where/how i wanted to, such that late corner adjustments/corrections were rarely needed. maybe the stiffness of the wheels/fork/frame were such that it wasn't upset by mid corner bumps, could hold the line better. dunno. but i like it.
* BB height is pretty much perfect. Feels nice and low in the corners, hitting pedals a few times, but not too often. gonna try to keep the bike at this height.
* Bike now weighs 13.18kg. yeah, more than a pound heavier than i'd hoped.
* I've been in two minds about what fork length to go for. 140mm (+10mm) or 150mm (+20mm). Definitely want it a bit slacker, but without upsetting the steering that i am enjoying. Gonna try 140mm first up - have ordered the air shaft.
* I have also finally ordered the mcleod 200x56 shock, and high volume king can. still aiming to run it at high volume, minimal rear sag (~25%). we'll see what geo that gives it (slackness, ride height), and maybe look into lowering the rear end later.
* minion dhf 2.5 is on the way. need more front end grip
* Seating position pretty good on the seatpost which has a little bit of set back. Slid the saddle right back. with the old 65mm stem, the saddle-to-bars measurement is 10mm shorter than my XC bike. undecided on stem length - gonna defer this decision until the geo is sorted out with the suspension changes.
* Wider q factor cranks reduced the calves rubbing on the seatstays, but it is still happening (just). not a problem.
* bike seemed to accelerate better this time. COuldve been the high rear air pressure. COuldve been my non-hangover this time.
* rear axle came loose. started hearing a ting-ting-ting noise - the rear brake rotor was starting to contact the caliper. tightened it up and it stayed tight for the 2nd hour of the ride. will keep an eye on it
* my backside has become used to the $25 chinese carbon saddles i have put on my commuter bike and XC bike. gonna get one for this bike too.Great info! Can you ride the bike in rough and steep single tracks? Jumping and bottoming out the on rear? I’m waiting your report!!
yeah, have been ploughing through some relatively rough trails, but no big drops-to-flat etc. went off a few jumps, but nothing major - probably big enough stuff to bottom my XC bike, but not this bike - never got beyond 90% rear travel on my 50mm stroke shock. as mentioned above, that shock is low volume, and would take a massive hit for it to bottom on this progressive linkage frame.