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Old 07-31-16, 10:39 AM
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SamSpade1941 
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Groupset questions

I have run into a small problem as I have been repairing and refurbishing my Trek 7900 Multitrack. The 25 year old Shimano Deore shifters were not working correctly(very stiff to operate). After reading some threads here and on other forums. I took the covers off and liberally applied some liquid wrench to get them to loosen up because of the hardened grease. I have had some progress but now have another issue, the 3 speed shifter is working perfectly , the 7 speed shifter is still somewhat stiff and seems to be skipping 3 gears when I up shift. The down shift is smooth and perfect with no gear skipping.

I am considering just buying another groupset as I have found a few good deals on eBay. If I go this route what would be the benefit of using SRAM over Shimano. Is one going to work better than the other ? I ride mostly on streets, and some gravel roads along with the occasional trail.

Also is a 2x10 setup better than a 3x10 ?

Thanks for all the help
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Old 07-31-16, 10:47 AM
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I've found 3 by 7 fine .. Bar end, friction shifting.. for 35 years..

Whats the rear frame spread distance?


Also is a 2x10 setup better than a 3x10 ?
for trendy compliance or function?

I have been fine with a 50:13 High and a 24:34 Low (with 700c wheels)


./.

Last edited by fietsbob; 07-31-16 at 12:09 PM.
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Old 07-31-16, 11:36 AM
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Originally Posted by fietsbob View Post
I've found 3 by 7 fine .. friction shifting.. for 35 years..

Whats the rear frame spread distance?




for trendy compliance or function?

I have been fine with a 50:13 High and a 24:34 Low (with 700c wheels)
In this case its not that I dont think 3x7 is not fine . Its simply that the existing shifters seem to not be working correctly. Any replacement I get would be another used Deore because I cant find a reasonably priced new one (they are all NOS and expensive) . Honestly I would rather not spend $50 to $100 on used ones, I can get a new Shimano 3x10 or 2x10 groupset for around $200 and a SRAM set in that similar price range.

I am not sure what you mean by rear frame spread? The bike does have 700c wheels though.
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Old 07-31-16, 11:48 AM
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Shimano Altus M310 7 Speed Trigger Shifter | Chain Reaction Cycles
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Old 07-31-16, 11:59 AM
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How wide are the dropouts apart? 126 wont take currently made wheels.

Speeds is Marketing of Parts, it's a Count; Gear Ratios is what moves you on your bike over the terrain.


I toured around Europe carrying my camping gear, on my Bike .


Sram and Shimano are competing for your money . You Pick ... choose by how the Brifter feels .

Sram makes Grip Shifters , but not in Higher end Hybrid MTB parts .





./.

Last edited by fietsbob; 07-31-16 at 12:13 PM.
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Old 07-31-16, 12:20 PM
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Originally Posted by fietsbob View Post
How wide are the dropouts apart? 126 wont take currently made wheels.

Speeds is Marketing of Parts, it's a Count; Gear Ratios is what moves you on your bike over the terrain.


I toured around Europe carrying my camping gear, on my Bike .


Sram and Shimano are competing for your money . You Pick ... choose by how the Brifter feels .

Sram makes Grip Shifters , but not in Higher end Hybrid MTB parts .

./.
Its a 135 rear spacing. I upgraded the rear wheel with a 8,9,10 speed freehub and used a 7 speed casette with spacer when I installed a new cassette.
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Old 07-31-16, 12:21 PM
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Is the Altus of equal quality to the Deore XT shifters the bike has now ?
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Old 07-31-16, 12:23 PM
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Why not 8 ?
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Old 07-31-16, 12:28 PM
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Originally Posted by fietsbob View Post
Why not 8 ?
Is anyone still making new 3x8 groupsets ?

I found a new shimano 3x9 on Amazon but no 3x8
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Old 07-31-16, 12:46 PM
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Originally Posted by SamSpade1941 View Post

Also is a 2x10 setup better than a 3x10 ?
Personal preference. Many variables specific to each situation.
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Old 07-31-16, 01:59 PM
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Originally Posted by SamSpade1941 View Post
Is the Altus of equal quality to the Deore XT shifters the bike has now ?
By quality do you mean broken? Then no, better quality, new in the box

A few steps down in the hierarchy, but certainly acceptable quality and functionality. Just want to fix it for a reasonable price, or do you want a new group?

https://www.bikeforums.net/bicycle-me...railleurs.html
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Old 07-31-16, 02:16 PM
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Originally Posted by SamSpade1941 View Post
Is the Altus of equal quality to the Deore XT shifters the bike has now ?
The Altus shifters are entry-level parts, or pretty close to it, but that's more a reflection of their finish (plastic in place of exposed anodized/painted/polished metal) and maybe their durability when getting beat up on mountain bike trails. For the type of riding you described in your first post, they're perfectly adequate and ought to give you years of problem-free service.

I normally ride road bikes, but I keep a mountain bike handy so I can ride around with my kids, including some light trail riding. I've got those Altus M310 shifters on my '97 Cannondale and they work great with the rest of its original 3x7 drivetrain.
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Old 07-31-16, 02:21 PM
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Originally Posted by SamSpade1941 View Post
Is anyone still making new 3x8 groupsets ?

I found a new shimano 3x9 on Amazon but no 3x8
NOS (new old stock): Shimano ST-EF40 Brake/Shift Lever Pair - Outside Outfitters

Though, I see little reason to do 8 speeds versus 9 these days. You might spend $20 extra but you get an additional cog.
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Old 07-31-16, 02:38 PM
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Originally Posted by dedhed View Post
By quality do you mean broken? Then no, better quality, new in the box

A few steps down in the hierarchy, but certainly acceptable quality and functionality. Just want to fix it for a reasonable price, or do you want a new group?

https://www.bikeforums.net/bicycle-me...railleurs.html
Ok thanks I appreciate it ... My plan was that since I am looking at potentially having to replace all of it I would opt for new Deore equipment.
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Old 07-31-16, 02:48 PM
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If you pick up a pair of combo shift/brake levers like ST-EF40's or similar, be aware of potential brake compatibility issues. Cantilever brakes and linear pull brakes (aka "v brakes") require different cable pull ratios. Brake levers made for one type of brake won't work well for the other. If you get a combo lever, make sure it'll work with your type of brake.
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Old 07-31-16, 03:27 PM
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Originally Posted by SkyDog75 View Post
If you pick up a pair of combo shift/brake levers like ST-EF40's or similar, be aware of potential brake compatibility issues. Cantilever brakes and linear pull brakes (aka "v brakes") require different cable pull ratios. Brake levers made for one type of brake won't work well for the other. If you get a combo lever, make sure it'll work with your type of brake.
Thats good to know my bike has cantilevers.
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Old 07-31-16, 04:08 PM
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Maybe I just have bad luck but my Alivio rear derailleur only lasted 1000 miles. The spring got weak and they aren't repairable. I got a good deal on a Deore LX ($29) and it still works good 3000 miles later. The Alivio shifters work fine. Any replacement parts I put on an MTB bike will be Deore or better and it seems LX is a pretty good value.
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Old 07-31-16, 06:51 PM
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Bikes are still being sold with 8 speed parts , your fancy Pto Replica stuff is where all the oneupsmanship is amongst the parts makers pushing the stuff.
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