K2 / Proflex Riders Group
General => Tech Forum => Topic started by: Blackjoy on May 15, 2016, 08:42:16 pm
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Saw this on Youtube.
https://www.youtube.com/watch?v=APz7mt9jYw4 (https://www.youtube.com/watch?v=APz7mt9jYw4)
Neil Donoghue from Global Mountain Bike Network does his best to give a review of Proflex 957 vs a Canyon Lux. While I appreciate that he was willing to even do the comparison, the video, imo, does a huge disservice to the 957 because it is totally unscientific and suffers from unavoidable bias. But the video is enlightening in that if look at it in totality, we can see what the bike industry is focused on: going down hill.
1. Biased from the get go. Neil compares a bike he's never ridden before with a bike that he owns and rides as his main XC bike. The geometry of the 957 is different from his bike in head angel. 70 - Canyon, 74 - Proflex. In addition, while the top tube length of the bikes is identical according to his measurements, the Canyon is 80mm longer in wheel base and has a 80mm stem vs 957 140mm stem. There's more, like the handle bar length, and the seat angle and the 29" vs 26" wheels, but the point is, Neil is not use to riding the 957 and he's extremely use to riding the Canyon.
2. No time comparison. While Neil does give us some comparative specs, many of the on-line reviews I've watched make an effort to compare time trials. Neil does not compare climbing times or flat course times or down hill times.
3. Focus is on going downhill. At the start of the comparison Neil compliments the 957 and is impressed with it as he rides on a slight uphill. But by the end, he complains that the 957 feels like it's going to launch him from the seat. Well, guess what Neil, you have to get off your seat when you down hill on that bike.
In the last two years, I revived my 957 and my 554 and have been riding the 957 a fair bit. After trying out a few modern bikes, it's pretty clear the industry is highly focused on how the bike does going down hill and not much emphasis is put on climbing. All-mountain, Enduro, and Trail bike reviews seem to show nothing but down hill footage. Granted, Neil tells us the Canyon is a XC bike and it only has 100mm travel, but then why does he only focus on how the bike descends?
Recently, I tried a Norco Sight 7.1 (650) I was admittedly blown away at how that bike soaked up the hits in the parking lot and on broken ground. I totally get why people prefer modern bikes and I also get the focus on down hill prowess. But the 957 is a XC racer and it was disappointing for Neil not to focus on things that are important to XC riding. I'm not going to pretend that the 957 is still cutting edge or even a viable option for real racers, but it would be interesting to see how the bike did in a more quantitative test.
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You've pretty much covered all my problems with this comparison. There is no way a bike of this age is going to stay with a modern bike on modern day courses. Pointless. He did however say at the begining some very positive things. His riding position on the 957 was terrible. I think it showed how good these bikes were and are for managing to stay with the Canyon. Put a few more up hill sections in the test and it would have been even closer.
Chris
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You've pretty much covered all my problems with this comparison. There is no way a bike of this age is going to stay with a modern bike on modern day courses. Pointless. He did however say at the begining some very positive things. His riding position on the 957 was terrible. I think it showed how good these bikes were and are for managing to stay with the Canyon. Put a few more up hill sections in the test and it would have been even closer.
Chris
Well, I'd love to see someone train on a 957 for a month and then take on a course designed for XC and see what happened. But the reality is that the focus is on the down hills side of the mountain. That's where all the sex appeal is. A bike company is going to sell more bikes by focusing on the bike's descending speed than on its climbing speed. So to the extent and course puts more emphasis on descending, a 957 is going to have trouble keeping up with the slacker geometries and longer wheel bases.
The other thing I forgot to question is whether the Noleen shocks on his test bike had been refurbished. The 957 is nearly 20 years old at this point and I would not expect the Noleen shocks to function the same as when they were brand new.
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Good points guys, but you know what? I just enjoyed seeing a hi-quality video of a PRO~FLEX in action! <GRIN>
Seeing those "Vectors" (sic) in movement was a joy and oh yes Neil, they are Crosslinks.................not that it matters, except to anoraks like me..........
The best compliment I had on my 4000se was when I cleared the end gate on a visible long, bumpy, jumpy and twisty downhill section in Dalby Forest and a young kid (anyone who's under 30 is "young" to me) said "I recognised the bike at the top and I was amazed how quickly you rode it down"................Maybe it's just something to do with my weight.............it can't possibly be the bike...........<GRIN>.
Anyway, yes please, I'll have a Canyon Lux, I can't possibly have enough bikes yet.....................
Col.
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I liked the video just for seeing a 957 in action. Thanks for posting. My 857 climbed like a goat. Downhill there were some limitations, but mostly were dependent on the riders skill level and of course taking the travel of front and rear into consideration.
And yeah his riding position sucked on the down hill for the geometry of the 957.
What's cool about old bikes, then never look a day older than when you first fell in love with them. :-*
Hard to fall in love with a new bike that looks like most other new bikes. World Cup Pro~flex is sex on wheels.
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I agree its a great video simply to see the bike in action. I also suspect that given the obvious wear on the frame that other issue with that bike may exist such as problems with the shocks.
It's clear that the times have changed with mountain biking. Downhill and flow trails are getting so much attention these days that climbing prowess is probably not even considered in most circles. That being said, I always ride in big circles so I still value uphill traction and being a heavier rider I want that more than downhill ability.
With all of that out of the way, I'll tell you that this bike is awful when pointed down a hill. It's bad now, and it was bad the first season I rode it and was thrown off for the first time on a downhill. Fast forward twenty years later and I'm again recovering from a shoulder injury as a result of a downhill get off.
My 757 is a truly amazing machine that I really have no interest in replacing but I'm also politely decling those invitations to take this bike to upstate New York for downhill runs.
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Saw this on Youtube.
[url]https://www.youtube.com/watch?v=APz7mt9jYw4[/url] ([url]https://www.youtube.com/watch?v=APz7mt9jYw4[/url])
The geometry of the 957 is different from his bike in head angel. 70 - Canyon, 74 - Proflex. In addition, while the top tube length of the bikes is identical according to his measurements, the Canyon is 80mm longer in wheel base and has a 80mm stem vs 957 140mm stem. There's more, like the handle bar length...
3. Focus is on going downhill. At the start of the comparison Neil compliments the 957 and is impressed with it as he rides on a slight uphill..
First things first, that bike should have a 71 degree HA. All other year models do and that was the standard back in the 90's. No mtb had a 74 degree HA. It looks like the fork does not have enough steerer tube spacers and because of that the legs angle in. I am guessing they measured the leg angle because it's hard to firt your cell phone in between the linkage and head tube. Hard to see but if you look closely you can see the legs and HA are not parallel. That is going to make the fork feel like it is folding underneath more than it should vs the correct "J" curve. That's a big issue.
Take a look at a properly set up Girvin linkage fork on this bike. You can see it has much slacker fork legs than the bike in the video. http://www.bikepro.com/directions/a97_proflex/957.html (http://www.bikepro.com/directions/a97_proflex/957.html)
Second, when was the last time the rubber was replaced on this bike (tires, break pads, grips) Is he rolling on 15 or 20 old rubber? ??? He commented he was sliding all over and that is to be expected when you ride on used shoes for 20 years ago.
Third, when was the last time either Noleen shock was serviced or the pivots/bushings on the fork or rear end serviced? Pretty impressive to be able to smash on a 20 year old full squish like that.
Finally, as pointed out, set the cockpit up to how you like it. WTF? Do you get in a car and not adjust the seat or steering wheel tilt and then complain about the driving position? I would never think about riding a 140mm stem and bars that narrow even in the 90's and I am 6'4. Cockpit was allways the first thing to get changed on any new bike for me.
Considering the bikes age, the fact fork does not look to be set up correctly, the bikes appears to be running old rubber, who knows when the service on forks and rear shock was cockpit is set up for a roadie, I would say it was pretty impressive he was able to ride as aggressively as he did. He was jamming at a pretty good clip on a bike that does not appear to be safe to ride.
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After watching the video, I don't see any particular bias. He's right about all his compliments about the Pro-Flex, and also right about all but one of his critiques, the exception being that the NR-4 rear shock has both rebound and compression damping adjusters.
In stock form:
The cockpit is too far forward for riding downhill (not "downhilling", but just riding downhill at all);
The head-tube angle is very steep, which makes steering responsive going uphill and scary going downhill;
The J-path of the Girvin fork is very unsettling in corners;
The bike is heavy compared to newer bikes;
The wooded terrain he rode on was too technical for the Pro-Flex, though the dirt road and singletrack was fine. It might not seem to make sense to compare the two bikes he compared, but it does make sense if you consider that they are both bikes *he* wanted.
Yes, mountain biking is more focused on downhill performance nowadays. However, that doesn't mean everyone is riding ski lifts to get to the top, it just means people got sick of buying bikes that could get them to the top of the hill and then were scary as @#$% to ride back down -- which is supposed to be the fast, exciting, and easy part of the ride. My 756 was terrifying to ride downhill until I got a telescoping fork with more travel, shortened the seatpost, moved the seat back, installed disc brakes, and generally made it more capable of surviving the reclamation of all the energy I invested into riding uphill in the first place. And yet my Christini *still* handles descents better.
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Just watched the video again and I didn't catch it the first time, but the 957 he rode weighed in at +29lbs? Why was that bike an extra 4 or 5 lbs over weight? The 955 came in at 23.5lbs "out of the box" with an aluminum swings arm and aluminum fork legs. The 957 had a carbon swing arm and carbon legs. My 855 is 25.5lb stock. I'm pretty sure I remember the 957 wieghed in under 25lbs stock even with the heavier Noleen shocks.
The 74 degree head tube angle they quoted, which should be 71 degrees and the extra 5 or so pounds of weight tells me somethings fishy about that bike.
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My 756 weighs 30lbs.
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Funny review. Bikepedia speced the bike at 24lbs. I think that was correct. http://www.bikepedia.com/QuickBike/BikeSpecs.aspx?year=1997&brand=ProFlex&model=957 (http://www.bikepedia.com/QuickBike/BikeSpecs.aspx?year=1997&brand=ProFlex&model=957)
So when the fork blows up swap it with a Noleen MegaAir fork and you get 4 inches travel and no J-path blues. When the rear shock blows swap it with a Manitou Swinger for another 4 inches travel. Swap out the bar with an Easton Monkeylite XC and the width problems go away. Bingo you have the best of the best for little money.
He did not say what the Canyon cost. Not cheap I bet. Bet it is not a Horst link swingarm either. Proflex 957 was top of the line for a reason.
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I had an opportunity yesterday to test ride some new Rocky Mountain bikes. My LBS arranged for them to have a demo van park at my favorite trail head. I took a ride on two bikes, a 2017 Instinct BC and a Pipeline 770 MSL.
Both of these bikes were truly fantastic. I felt very planted on these bikes. On the few sections where I was able to point them down hill I felt very comfortable. Each did a wonderful job at taming some of the technical bits of the trail. I came back with a huge smile after riding both of these bikes.
The absolute biggest takeaway that I have here is that out Proflex bikes are still competitive. Maybe not on the downhills, but still remarkable.
I do think it's time to buy a new bike and was leaning towards the Instinct as my first choice but I will never give up my 757. If I had a 957 with rebound and compression damping controls I may not have noticed as much.
I'm not sure the tester in this video really appreciated what he was riding nor had the bike setup properly. If he did I think he really would have seen that 957 as truly remarkable bike.
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You can buy a NR-4 shock with compression and rebound damping from Noleen J6. It's 300 bucks but that's a lot less than a new bike.
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I would be a little hesitant to pull the trigger on that, not sure what is going on with NoleenJ6, I tried and contact them multiple times for a rebuild (they offer the service on their website) but got no reply, purchased a rebuild kit on their eBay store and got no follow up whatsoever, expected delivery time is about to expire so I will try and open a case with eBay. For some reason it seems there's some communication problems which I'd rather make sure are sorted out before shelling $300+ dollar. I would be more than happy for them to rebuild my now multiple shocks (NR4, NR2) if they answer any of my e-mails.
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I eventually got my rebuild kit from Noolen J6, but never got as much as a reply or any indication of when I would get it. I had to open a case with e-bay, and a few days later I got the parts.
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After watching the video, I don't see any particular bias. He's right about all his compliments about the Pro-Flex, and also right about all but one of his critiques, the exception being that the NR-4 rear shock has both rebound and compression damping adjusters.
In stock form:
The cockpit is too far forward for riding downhill (not "downhilling", but just riding downhill at all);
The head-tube angle is very steep, which makes steering responsive going uphill and scary going downhill;
The J-path of the Girvin fork is very unsettling in corners;
The bike is heavy compared to newer bikes;
The wooded terrain he rode on was too technical for the Pro-Flex, though the dirt road and singletrack was fine. It might not seem to make sense to compare the two bikes he compared, but it does make sense if you consider that they are both bikes *he* wanted.
Yes, mountain biking is more focused on downhill performance nowadays. However, that doesn't mean everyone is riding ski lifts to get to the top, it just means people got sick of buying bikes that could get them to the top of the hill and then were scary as @#$% to ride back down -- which is supposed to be the fast, exciting, and easy part of the ride. My 756 was terrifying to ride downhill until I got a telescoping fork with more travel, shortened the seatpost, moved the seat back, installed disc brakes, and generally made it more capable of surviving the reclamation of all the energy I invested into riding uphill in the first place. And yet my Christini *still* handles descents better.
I have to disagree with a lot of that. Back in 2015, I pulled my Proflex 957 out of storage (my garage), had a BS service it, and sent the shocks to Noleen to have them rebuilt. I rode the 957 for a year and a half at Duthie and Tiger Mountain, as well as a Rocky Top in Yakima. The bike still rides fantastic. The 957 was never meant to be a down hill monster and yet, I could go down just about anything I had the nerve to try by simply getting off my seat. Granted, I am not a jumper, nor do I like to catch air, but the bike was never designed with that stuff in mind.
At the same time I brought my 957 back into action, I also resurrected my 554. Of course the MCU's were shot and I had to find something to replacement them. I also had to swap the front fork (which had been apparently recalled) and take it from 60mm to 80mm of travel. The 554 was routinely ridden by friends while I rode the 957. Those ridding the 554 were generally new to MTB and they all enjoyed riding the bike.
Mid-2016, I decided to demo Evil's The Following at Duithie. I took my 554 out to compare it the Evil and my buddy and I swapped bikes. There was no question the TF was a better bike in so many ways. The next day I brought out my 957. My buddy had not ridden my 957. His immedate response was that he didn't think TF was worth the extra $5k over the 957. Now, we didn't ride any black diamonds, only blues, so neither bike got pushed to travel limits. I also state for the record, that I thought TF was a better than the 957, in fact, I bought TF a month later. But the key factor is that on XC style trails, the 957 wasn't horrible by any means. It climbed better and turned better than the 29", 29lb modern day Trail bike.
Here's the thing. After having ridden TF, getting back on the 957, is jarring. The 957 shocks are not nearly as progressive as modern bikes, 26' wheels simply do not roll over stuff as well as 27.5 or 29". And, in my experience, 29" wheels are simply more efficient, there's no question. In addition, the steeper geometry is not nearly as confidence inspiring as modern geometries. Finally, the lack of a dropper post and disc brakes is a major setback for any serious dowhilling.
But I rode the 554 for several years before the 957 and both of these bikes were a blast. My buddy back in the day rode side by side with his 856 and he had a blast. I can't speak to the 756, but that video is a joke. He takes a bike that hasn't been set up for him and on which he hasn't had any experience riding, probably hasn't been serviced in a half a decade, and then expects it to perform like his high-end XC race bike? Seriously?
I think the real problem I have with the video is not that he prefers his modern bike to the 957, it's that he doesn't acknowledge that the manner that he's comparing the bikes is naturally skewing his perception of the 957. One of the things that makes the 957 so wonderful is how well it climbs tight technical single-track. But he's not interesting in any of that, he's primarily focused on comparing the bike in the area that it wasn't really designed for, aggressive downhill riding.