The Sprindex is regressive vs progressive. You can see bench test results here - https://www.bikeradar.com/reviews/components/rear-shocks/sprindex-adjustable-coil-spring-review/.I'm looking to get a bit more ramp out of my shock (currently running my Megatrail in the more progressive setting with a linear 375# EXT spring). A buddy returned my 390-430 Sprindex, and I ordered a 340-380 Sprindex and a 400-480 Valt Progressive. I'll check sag with both the new springs and return whichever is further off, then ride the other. Right now I'm only measuring like 0.25-0.5mm less sag with the 390 Sprindex vs the 375 EXT, so less than 1% difference in sag, which is about what I expected due to spring variability.
I'm hoping the Valt works - I had good luck with one of those on my 11-6 on my Sentinel (very linear bike). The Sprindex progression supposedly only kicks on at the last 20%, whereas the Valt is supposed to start ramping closer to 50%, which is what I want.
Hmm thanks. I'd seen that article before but forgot about it. If it was 10% softer at the start but only 2% off the stated value at 75% travel, wouldn't that make it more progressive? So going from 374# at start to 382# at 75%.The Sprindex is regressive vs progressive. You can see bench test results here - https://www.bikeradar.com/reviews/components/rear-shocks/sprindex-adjustable-coil-spring-review/.
The rate of force it takes to compress the spring decreases as you compress the spring, which makes it regressive. Normally a coil spring's rate is ~linear - ie a 400lb/in spring takes 400lbs to compress 1 inch, 800 lbs to compress 2 inches etc. If a spring takes 400lbs to compress 1 inch, but only 700lbs to compress 2 inches the rate is regressive.Hmm thanks. I'd seen that article before but forgot about it. If it was 10% softer at the start but only 2% off the stated value at 75% travel, wouldn't that make it more progressive? So going from 374# at start to 382# at 75%.
Their measurements do coincide with what I'm feeling (the 390 setting is very, very close to my 375# EXT, which has it's own inaccuracy).
Or are you saying that it's regressive at start from the stated value?
Yeah I bought a screwdriver set and a couple of the flat blade tips weren't cut straight, my current stubby carby servicing set doesn't fit in to Philips screws all that well, I'm gonna swap all the bits out as the handle and case are nice.My 4mm was bent and sketchy.
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Ditto. Great set. I was worried the plastic coating would flare out and get ratty but I've had mine for years and they're still fine.i have the same set. very nice.
Wera vs Wiha battles have been running for years. I don't think either is really better overall, just the bits and pieces from one or the other stand out although I like Wera's hex engagement better for stupid shallow fasteners etc. I've got their 1/4" socket set as well and while its pretty nice, my Stahlwille set makes it look very average. I'd try the Stahlwille allen keys but I've gotten so used to the coloured Wera set I don't wanna change.The price is pretty nuts considering they don't make much outta Germany, you can get German made Wiha for less and it performs better according to this case study of one
I guess for pro bike level use the Wera would be better for reducing RSI type problems.Ditto. Great set. I was worried the plastic coating would flare out and get ratty but I've had mine for years and they're still fine.
Wera vs Wiha battles have been running for years. I don't think either is really better overall, just the bits and pieces from one or the other stand out although I like Wera's hex engagement better for stupid shallow fasteners etc. I've got their 1/4" socket set as well and while its pretty nice, my Stahlwille set makes it look very average. I'd try the Stahlwille allen keys but I've gotten so used to the coloured Wera set I don't wanna change.
I forget the brand the makes those really nice sliding T handle hex wrenches. That's my dream set. Until then I've got a cheapish Bondhus T handle set.
Facom are the ones I'm thinking of. I used a set once and they were pretty damn nice. Been on my wishlist since. I'll google the USAG ones.USAG or Facom? I'm hoping that the Facoms show up in Australia with Sidchrome branding, they have been doing it for a bunch of Facom tools and they are cheaper in Aus than pretty much anywhere else, it's weird.
Since you are an Aussie, don't buy the SP sliding T handles, they suck.
I could never have a Stahlwille 1/4" set, they are crazy money and I am forgetful.
Yeah, so initial plan cratered. The 380 Sprindex adjuster rattled loosely out of the box, so I returned it (besides your reasons). Cane Creek is 35mm ID, so didn't fit, and is getting returned.The rate of force it takes to compress the spring decreases as you compress the spring, which makes it regressive. Normally a coil spring's rate is ~linear - ie a 400lb/in spring takes 400lbs to compress 1 inch, 800 lbs to compress 2 inches etc. If a spring takes 400lbs to compress 1 inch, but only 700lbs to compress 2 inches the rate is regressive.
From the article -
"As far as adjustments go, the Sprindex works as it should, but the range isn’t quite as large as stated. In the initial part of the stroke we recorded a 10 per cent difference in spring rate, but this reduced to 2 per cent when the spring was compressed by two inches (75 per cent of the 2.6in stroke on my shock).
This corresponds to what I felt out on the trail, which is that there’s a notable difference early in the stroke, but deeper into the travel, the effect lessens. Part of this is down to the way the plastic adjuster effectively shortens the coil.
We observed on the testing jig that when the forces exerted on the shock reached a certain point, the coil started bending around the edge of the plastic adjuster. This deflection effectively makes the spring longer again and therefore softer."
You mean the ones all the worldcup wrenches use?Ditto. Great set. I was worried the plastic coating would flare out and get ratty but I've had mine for years and they're still fine.
Wera vs Wiha battles have been running for years. I don't think either is really better overall, just the bits and pieces from one or the other stand out although I like Wera's hex engagement better for stupid shallow fasteners etc. I've got their 1/4" socket set as well and while its pretty nice, my Stahlwille set makes it look very average. I'd try the Stahlwille allen keys but I've gotten so used to the coloured Wera set I don't wanna change.
I forget the brand the makes those really nice sliding T handle hex wrenches. That's my dream set. Until then I've got a cheapish Bondhus T handle set.
nice bell, ya ding-a-ling!Put a sweet new bell on today.
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Thanks - that thing certainly looks nice, but I need a bell that "auto-rings" for use on the trail.
I use these due to the on/off switch. Unfortunately, they have a limited life span and aren't rebuildable.
TIMBER Bolt-On Model
Mountain bike bells - TIMBER is the first bicycle bell designed for mountain biking. MTB trail awareness when you need it. Silence when you don't. NICE TRAILSwww.mtbbell.com
I had that one and it broke! Then I had to do the most Karen thing ever and warranty a fucken bell. I ended up getting the more durable looking model down as a replacement with the credit just do be safe.Put a sweet new bell on today.
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Ohhh, I ordered this one about reading the bad reviews on the other one.I had that one and it broke! Then I had to do the most Karen thing ever and warranty a fucken bell. I ended up getting the more durable looking model down as a replacement with the credit just do be safe.
To be fair, the clanger thingy on mine went missing sometime on the ride back from the pub so it may have been user error involved.Ohhh, I ordered this one about reading the bad reviews on the other one.
Knog stuff has always been shit in my experience, but there didn't seem to be anything else that would fit.
Pretty sure that's the color of caramel and toffee!
I’ve been a little off, lately, if you know what I meanPretty sure that's the color of caramel and toffee!
And light brown soft pooPretty sure that's the color of caramel and toffee!
Thanks! Yeah, I will put one on there sooner or later. I did a gusset on 2 frames and 2 without. I like the looks of both.Sexy beast…,(needs a gusset for aesthetic reasons, among others)
Nice Job!
WOW! Super interested on a real world review of those tires!
will report back once DH season starts. they feel pretty good in hand in terms of compound / casing.WOW! Super interested on a real world review of those tires!