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Messages - FullCarbonAlchemist

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361
29er / Re: Lexon "Riot 10"
« on: December 10, 2021, 06:16:29 PM »
As mentioned from my earlier post, I plan on carrying over some components from Specialized Crave:
-Reba fork, going to upgrade the shaft so I can run it at 120mm vs the 100mm (trying to decide wether to upgrade the damper to the charger or not - kind of expensive and not sure it is worth it - Please post if you have any experience with the charger damper or considered it as well).

SRAM is so weird about this — the names have always been confusing but particularly so now, where they’re called “Charger 2” (basic but decent IFP damper, known for not being very supportive) and “Charger 2.1,” their bladder damper which offers much more support while being even more plush than the IFP for the usual reasons.

If your fork can take a bladder damper upgrade, they are 100% always better than IFPs. Usually by a lot.

362
29er / Re: FM1002 / FM1166 - 150mm frame
« on: December 03, 2021, 02:42:45 AM »
Good point. I’m aware of the relation between spring and leverage curves, I was just trying to keep my question relatively short — and coming from a GT Force (avg leverage 2.79 and only moderately progressive), I was thinking of the fact that even the max 700lb coil felt too soft for me on that bike with the limited support the Bomber CR damper gives.

Looking at the kinematics graphs for these bikes, I thought maybe it was progressive enough given the low average, at least for a progressive coil rather than a regular linear one. But the context you gave made me look again and I definitely take your point. The dip near the end of travel in particular isn’t great for coils.

The average leverage also had me thinking of damping, as the main 185x55 air shock I have to spare is a DPX2 with standard Medium tune. That was overdamped for my Force (different models/years have shipped with both Low and Medium tunes), so I was thinking less leverage meant it would be even more overdamped for a 1001. But of course you reminded me that it’s not that straightforward, the curve matters here too.

I might just get a 1002 and a DVO Topaz for it — the same stock damping tune that helped my Force because it’s lighter than Fox or RS’ Mediums, and it’s very tunable for different spring curves — but I wanted to think through all the possibilities before I gave up on using one of my existing 185x55 shocks with a 1001.

363
29er / Re: FM1002 / FM1166 - 150mm frame
« on: December 02, 2021, 11:44:23 PM »
Any 1002 owners tried a coil shock? I like being able to see sag and travel use easily on an air shock, but the ~2.5 average leverage on the 1001/1002 seems like it would work well with coils.

A Marzocchi Bomber CR is less expensive as well as more reliably serviced by my local shops than my preferred air shock, a DVO Topaz…and either way, I’m probably looking at a Marzocchi Z1 fork for this build, either air or coil.

I want my first unbranded build to be lighter than my current 27.5 enduro bike (likely upwards of 38lbs, haven’t weighed it lately), but I also ride a lot of harsh stuff and have severe arthritis so coils are appealing.

364
29er / Re: FM1001 / FM1156 - 135mm frame
« on: November 29, 2021, 01:11:12 PM »
Well with 27.5” wheel and 2.6” rocket ron on 30mm id rim this is what it looks like. Plenty of clearance! Seems with 29” wheel side clearance would be similar.

What’s your BB height like? I’ve been thinking about a mixed wheel setup and am trying to decide whether that will work in my area (Maine) because I ride a lot of very rocky trails where pedal strikes are a big issue.

365
29er / Re: cybrsrce AM831 build
« on: November 29, 2021, 01:02:08 PM »
Eddy said they changed the carbon layup to “fix” this issue, but AFAIK nobody’s received the updated rear triangle yet and from everything I’ve been reading in the 831 threads, taking up the gaps in the upper pivot won’t fix the problem alone. It sounds like a completely new and different upper link would be required with better bearing shells and shields/retaining clips.

366
29er / Re: FM1002 / FM1166 - 150mm frame
« on: November 26, 2021, 12:19:40 AM »
Hi, which size would you choose for 170cm Bodyheight?

Depends a bit on your proportions (whether you have long or short legs, prefer a long or short reach etc). If this was the FM1001/1156 135mm version we were talking about, that runs about a size small in terms of reach so you’d probably be between a medium and large.

Looking at the numbers, the 1002/1166 runs more or less similar to typical progressive enduro bike sizing so you’d probably be a Medium for this bike.

367
29er / Re: FM1001 / FM1156 - 135mm frame
« on: November 23, 2021, 03:16:00 PM »
Got my frame. Hopefully will have it built by next week.
Mines a Medium.

Are those blue accents decals or paint? Either way they look awesome, really complement the lines of the frame.

Don’t be surprised if I post pics of a 1001/1002 build with a bit of a copycat look some day!

368
From searching this site, looks like others are actually using ones that are larger than what the dealer is saying.  They're saying using these two. 

1. M8x22.86 - https://thelostco.com/products/the-real-2021-fox-mounting-hardware?variant=32303772631121
2. M8x30 -  https://thelostco.com/products/the-real-2021-fox-mounting-hardware?variant=32303770370129

Let me know if this is incorrect.  Thx.

I stand corrected, 22.86 (aka 8x23) should be the right size.

369
29er / Re: cybrsrce AM831 build
« on: November 21, 2021, 04:06:55 AM »
The Super Deluxe Ultimate for HT v2 that I got was a L/L tune but it had internal issues.  I though it was me causing problems with a damper swap to the standard body but Rockshox replaced it.  I ended up returning the replacement and getting a standard M/M tune version.  Two tokens and two bands and it is alright, I'm going to try three tokens and 3-4 bands.  Keep it under 300psi and should get full travel.

Everyone complaining on Youtube says the stock L/L tune doesn't have enough mid support but the M/M seems to have too much, at least at high PSI.

Yeah, that’s why I fell in love with the DVO Topaz stock tune….it’s at least as supple and willing to use travel as a Fox/RS low tune but more supportive, and the support can be tuned a bit more independently from bump absorption than other shocks.

It helped me with my GT Force that has shipped with both Medium and Low tunes, and from what I understand was specifically intended to address the issues people had with Santa Cruz VPP bikes. They’ve branched out since then, but in the early days a lot of the principal guys at DVO like Ronnie rode SCs.

It’s too bad that pump hose fit for the piggyback is probably an issue with DVO and Suntour TriAir shocks on the 831. I bet either one would work well otherwise, as stock aftermarket tunes go.

Hopefully by the time the upper swingarm pivot issue with the 831 is confirmed to be properly sorted in current frames going out, the second gen Topaz T3 will be shipping with that sideways piggyback.

370
29er / Re: cybrsrce AM831 build
« on: November 20, 2021, 07:01:57 PM »
It felt acceptable at the ~20mm flex in the video and now if feels like roughly half that.  I haven't had it out on the trail yet but I assume it will be even more predictable.     

I got these M18x27mmx1mm - https://www.amazon.com/gp/product/B07NRXPYDG but I might experiment more.  The bolts are M16 (I think) and then ~2mm x ~2mm unthreaded surface to sit on the bearing.  I might try two of the M18 washers (cut to the size of the bolt head) and one or two M16 on the surface that touches the bearing to make sure there is good contact.

I do have the new shock in, first ride with it wasn't great.  Way too harsh even after I let it sag to 35% with rebound full slow and LSC open (full soft). Fork and shock recommended PSI, rebound, LSC, and fork HSC have all been way off for me.  Removed two tokens from the fork, one token from the shock, and added the MegNeg with a single band.  That seems to be what most of my near-clyde brethren are doing so I'll check that out.  Going to borrow a ShockWiz to speed this along.

I'll add some pictures of the bolt/washer combo and maybe a new flex video with it on the turbo trainer.

What is the damping tune? If it’s stock aftermarket Medium then it’s probably over-damped. The closest comparable tune (2018-2021 SC Bronson) is Low/Low with 2.5 tokens in the positive chamber, not sure about negative spacers if any.

Of course lots of people aren’t super happy with the stock tune on SC bikes but it seems like a good starting point.

371
29er / Re: FM1002 / FM1166 - 150mm frame
« on: November 20, 2021, 03:23:48 PM »


My 1002 build

more photos here: https://1drv.ms/u/s!AtHxZr8ACjmhg7kATvILytfKYfG8bw?e=ulsS3q

What fork is that? The adjusters/valves on the right leg look familiar but I can’t remember which brand that is.

372
29er / Re: cybrsrce AM831 build
« on: November 20, 2021, 12:13:05 PM »
I really want to get in on the group buy soon but only if I get some independent confirmation from someone who’s received a revised frame/rear triangle that this issue has been fully resolved in new frames that will go out for the buy. Otherwise I’ll wait and/or buy a different frame for my winter build.

373
29er / Re: Chinese Santa Cruz/AM831
« on: November 20, 2021, 04:59:23 AM »
Has anyone tried a coil on this frame? 

To those who've already built one with an air shock, would you say the shock feels progressive or linear?

The suspension kinematics should be similar to a 2018-2021 SC Bronson which also used a 210x55 shock. Not everyone is happy with the stock SC shock tunes but they’re generally Low damping and about 2/3 of the way to a max volume spacer (2.5 tokens on the Super Deluxe, 0.4 or 0.6 spacer on a Fox shock).

So if I understand correctly: a little bit on the progressive side, to help compensate for the curved regression of the VPP system. But overall leverage is reasonable so you probably don’t want stock aftermarket Medium damping.

374
Fat Bikes / DNM inverted fat bike fork — how does it compare?
« on: November 20, 2021, 04:47:47 AM »
I have persistent problems with my current Chinese carbon fat bike fork and its carbon plug loosening over the course of snow season due to the shearing forces of the snow pushing/twisting on the fork. So I’d like to get something with an alloy steerer….which is unusual for affordable carbon solid forks.

So I’m looking at suspension forks, and I don’t want another Bluto. Found my last one (now dead with a shattered integrated lower bushing) pretty underwhelming, particularly in the cold. Mastodon Pro EXTs are basically nonexistent AFAIK. Which brings me to the inverted option.

There’s Wren with an improved damper, cold tolerant replacement damper option, and keyed stanchions for stiffness since there’s no arch. I also happen to know Kevin Wren through social media but wouldn’t ask for a discount in these crazy times. A very similar but cheaper version of the same fork body is sold by DNM.

Anyone have experience with either the Wren or DNM versions or both? I’ve heard the DNM is halfway decent but would like more first hand experience. Can’t find many reviews online.

375
Anyone have any more thoughts on this? I’ve been thinking about a 27.5 fat bike for a while now and would prefer a 170 crankaxle/177 rear axle, but am very curious what the biggest tire clearances that are available out there are. Ideally I’d like something that could match or exceed the clearance of the second generation Framed Alaskan Carbon 27.5.

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