Go Back  Bike Forums > Bike Forums > Folding Bikes
Reload this Page >

Lightweight Crankset Update

Notices
Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

Lightweight Crankset Update

Old 01-23-22, 06:07 PM
  #1  
MTZER
Junior Member
Thread Starter
 
Join Date: Jun 2020
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Liked 0 Times in 0 Posts
Lightweight Crankset Upgrade

I am seeking advice to find a lightweight Crankset Upgrade of a Dahon.
After disassembling and weighing the Truvativ Elita it turned out to be approx 1kg (excluding chainring bolts).

Right arm: 305g
left arm: 215g
extracting screws x 2: 40g
Chainring and guard: 135g
Isis Drive BB: 306g

1. What are the current options for crankset x1+BB that yield the lowest possible weight?
I would really appreciate it if you can give an estimated weight for the suggestions. THM and lightning are out of budget!

Last edited by MTZER; 01-24-22 at 04:53 PM.
MTZER is offline  
Old 01-24-22, 06:45 PM
  #2  
jfouellette
Senior Member
 
Join Date: Aug 2021
Location: Montreal
Posts: 121

Bikes: Lombardo Power 2000 Minivelo (2014?). Norco Scene 2 (2021), Fuji M1 Minivelo (2015) still in box. Fnhon Blast build (2022)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 51 Post(s)
Liked 55 Times in 40 Posts
Have you looked at Litepro brand? I just replaced my Dahon crankset to a Litepro (square bracket).
jfouellette is offline  
Likes For jfouellette:
Old 01-24-22, 07:05 PM
  #3  
monsterfather
Member
 
monsterfather's Avatar
 
Join Date: Jan 2022
Location: Hong Kong
Posts: 32

Bikes: Folding Change; road bike LIV

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
Liked 9 Times in 4 Posts
Originally Posted by jfouellette View Post
Have you looked at Litepro brand? I just replaced my Dahon crankset to a Litepro (square bracket).
any photo to share?
monsterfather is offline  
Old 01-24-22, 08:22 PM
  #4  
jfouellette
Senior Member
 
Join Date: Aug 2021
Location: Montreal
Posts: 121

Bikes: Lombardo Power 2000 Minivelo (2014?). Norco Scene 2 (2021), Fuji M1 Minivelo (2015) still in box. Fnhon Blast build (2022)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 51 Post(s)
Liked 55 Times in 40 Posts
jfouellette is offline  
Likes For jfouellette:
Old 01-24-22, 08:30 PM
  #5  
monsterfather
Member
 
monsterfather's Avatar
 
Join Date: Jan 2022
Location: Hong Kong
Posts: 32

Bikes: Folding Change; road bike LIV

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
Liked 9 Times in 4 Posts
Originally Posted by jfouellette View Post
how itís feel compared to stock crankset?
monsterfather is offline  
Old 01-25-22, 02:23 PM
  #6  
tuleggi
Member
 
Join Date: Jul 2020
Posts: 34
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked 8 Times in 5 Posts
I suggest you buy a second hand racing bike crankset, it will be much better and light. For example I used a second hand campagnolo super record, see here: https://www.bikeforums.net/folding-b...#&gid=1&pid=21
tuleggi is offline  
Old 01-25-22, 03:28 PM
  #7  
MTZER
Junior Member
Thread Starter
 
Join Date: Jun 2020
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Liked 0 Times in 0 Posts
Thanks for mentioning Litepro cranks, yes I have considered the options they provide.

Option 1:
Litepro FanShaped Cranks 366g + Square BB Titanium 170g (lightest I have seen) + my chainring and guard = 670g

Option 2:
(Litepro Cranks + Hollowtech BB) 613g + my chainring and guard = 750g

I think if I am considering a LitePro I'll go with the first option as my goal is to only cut the weight
Did I miss something or is there any tweak for a lighter set?
MTZER is offline  
Old 01-25-22, 03:33 PM
  #8  
MTZER
Junior Member
Thread Starter
 
Join Date: Jun 2020
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Liked 0 Times in 0 Posts
Originally Posted by tuleggi View Post
I suggest you buy a second hand racing bike crankset, it will be much better and light. For example I used a second hand campagnolo super record, see here: https://www.bikeforums.net/folding-b...#&gid=1&pid=21
Thanks for sharing this tip, I took a look at your post for your bike and I find it really beautiful.
That's interesting, Did you buy a double chainring and modified it to single?
I would like to ask you if you could also share the difference of weight between the Litepro Crank and the Campagnolo as you said the latter was heavier.
MTZER is offline  
Old 01-29-22, 10:38 AM
  #9  
tuleggi
Member
 
Join Date: Jul 2020
Posts: 34
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked 8 Times in 5 Posts
Originally Posted by MTZER View Post
Thanks for sharing this tip, I took a look at your post for your bike and I find it really beautiful.
That's interesting, Did you buy a double chainring and modified it to single?
I would like to ask you if you could also share the difference of weight between the Litepro Crank and the Campagnolo as you said the latter was heavier.
Thank you.

Yes exactly, the only thing you need to change is the direction of the bolts (you can see in the picture in my other post) so that they have grip also on a single chainring, it works.

In term of weight I do not recall the weight of the litepro+bb but it was maybe 20 grams less than the campagnolo+bb. See below the picture of the weight of the campagnolo cranks with the bearings: 480 grams. if you add the bottom brackets cup it is plus 40 or 50 grams = 530 grams in total.
Honestly those additional 20 grams or so worth so much, much stiffer and enjoyable to cycle:


Last edited by tuleggi; 01-29-22 at 11:08 AM.
tuleggi is offline  
Old 01-29-22, 04:36 PM
  #10  
Jipe
Senior Member
 
Join Date: Feb 2017
Posts: 851
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 395 Post(s)
Likes: 0
Liked 118 Times in 99 Posts
The Campagnolo carbon Super Record crankset of the picture (with "Ultra Torque System" and "11" written in white) is the one with steel axle.

There is another one with a titanium axle that weight less (with "Titanium Ultra Torque" and "11" written in white on a red background).

Steel axle Super Record crankset:

Titanium Axle Super Record:

Jipe is offline  
Old 01-29-22, 04:44 PM
  #11  
tuleggi
Member
 
Join Date: Jul 2020
Posts: 34
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked 8 Times in 5 Posts
yes indeed :-)
tuleggi is offline  
Old 01-30-22, 06:20 AM
  #12  
Jipe
Senior Member
 
Join Date: Feb 2017
Posts: 851
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 395 Post(s)
Likes: 0
Liked 118 Times in 99 Posts
Now that Campagnolo moved to 12s, this gorgeous 11s crankset can be found at discount price.

Chainrings are 5 arms BCD 135.

For two chainrings, the XPSS system of Campagnolo provide excellent shifting.
Jipe is offline  
Old 02-01-22, 03:12 PM
  #13  
MTZER
Junior Member
Thread Starter
 
Join Date: Jun 2020
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Liked 0 Times in 0 Posts
Originally Posted by tuleggi View Post
Thank you.

Yes exactly, the only thing you need to change is the direction of the bolts (you can see in the picture in my other post) so that they have grip also on a single chainring, it works.

In term of weight I do not recall the weight of the litepro+bb but it was maybe 20 grams less than the campagnolo+bb. See below the picture of the weight of the campagnolo cranks with the bearings: 480 grams. if you add the bottom brackets cup it is plus 40 or 50 grams = 530 grams in total.
Honestly those additional 20 grams or so worth so much, much stiffer and enjoyable to cycle:

Thanks a lot for the pictures, they are really making a point
Which bottom bracket have you used with your bike ?
MTZER is offline  
Old 02-02-22, 05:52 AM
  #14  
Fentuz
Senior Member
 
Join Date: Aug 2014
Location: UK
Posts: 389

Bikes: Dahon Jetstream p8, customized Dahon Helios P18, customized Dahon Smooth Hound P9 & Plant X Free Ranger (modded of course)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 121 Post(s)
Liked 108 Times in 83 Posts
litepro stuff are descently light and cheap. I have on the folding/low maintenance bike.
on the gravel, I switched to Sram force 1 carbon 165mm fitted with direct mount chainring and GXP cups at this is pretty light (~450g) compared to the original sram rival crankset (~800g).
Fentuz is offline  
Old 02-02-22, 01:10 PM
  #15  
tuleggi
Member
 
Join Date: Jul 2020
Posts: 34
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked 8 Times in 5 Posts
Originally Posted by MTZER View Post
Thanks a lot for the pictures, they are really making a point
Which bottom bracket have you used with your bike ?
these: https://www.mantel.com/uk/campagnolo...tratorque-cups
tuleggi is offline  
Old 02-04-22, 10:51 PM
  #16  
MTZER
Junior Member
Thread Starter
 
Join Date: Jun 2020
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Liked 0 Times in 0 Posts
I found Sram RED to be light and it comes in two versions, GXP and BB30. Does anyone know which would fit a Dahon ?
MTZER is offline  
Old 02-07-22, 04:15 AM
  #17  
Fentuz
Senior Member
 
Join Date: Aug 2014
Location: UK
Posts: 389

Bikes: Dahon Jetstream p8, customized Dahon Helios P18, customized Dahon Smooth Hound P9 & Plant X Free Ranger (modded of course)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 121 Post(s)
Liked 108 Times in 83 Posts
Originally Posted by MTZER View Post
I found Sram RED to be light and it comes in two versions, GXP and BB30. Does anyone know which would fit a Dahon ?
yes, you need 68mm GXP BB. both direct mount red1 and force1 are pretty much the same weight, the direct mount can be used with DM chainring or spider or powermeter. There is a rare version or red with integrated spider which is a little lighter (not much) but it seems to be phased out.
The red AXS cranks is lighter (~150g lighter) but is much more expensive



Fentuz is offline  
Old 02-09-22, 03:36 AM
  #18  
50PlusCycling
Senior Member
 
50PlusCycling's Avatar
 
Join Date: Mar 2018
Posts: 609
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 285 Post(s)
Liked 235 Times in 139 Posts
Square taper cranksets can easily be replaced by newer types, like “Hollowtech” or “Ultra Torque” versions. I replaced the square taper crankset in my Birdy with Dura Ace 7800 parts, it was a bolt-on upgrade which didn’t require any fabrication. The Dura Ace parts weighed half what the originals did.
50PlusCycling is offline  
Old 02-13-22, 05:36 AM
  #19  
MTZER
Junior Member
Thread Starter
 
Join Date: Jun 2020
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Liked 0 Times in 0 Posts
Originally Posted by Fentuz View Post
yes, you need 68mm GXP BB. both direct mount red1 and force1 are pretty much the same weight, the direct mount can be used with DM chainring or spider or powermeter. There is a rare version or red with integrated spider which is a little lighter (not much) but it seems to be phased out.
The red AXS cranks is lighter (~150g lighter) but is much more expensive


Sorry for my limited knowledge here. I have seen some bottom brackets which act as converters from BB30 to BSA, Would it still be possible to use the BB30 version of the SRAM Red with these converters ?
MTZER is offline  
Old 02-13-22, 05:53 AM
  #20  
MTZER
Junior Member
Thread Starter
 
Join Date: Jun 2020
Posts: 23
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Liked 0 Times in 0 Posts
Originally Posted by Fentuz View Post
litepro stuff are descently light and cheap. I have on the folding/low maintenance bike.
on the gravel, I switched to Sram force 1 carbon 165mm fitted with direct mount chainring and GXP cups at this is pretty light (~450g) compared to the original sram rival crankset (~800g).
450g for the crankset including the chainring and GXP cups?!
I would love to know more about that please
MTZER is offline  
Old 02-13-22, 08:46 AM
  #21  
Fentuz
Senior Member
 
Join Date: Aug 2014
Location: UK
Posts: 389

Bikes: Dahon Jetstream p8, customized Dahon Helios P18, customized Dahon Smooth Hound P9 & Plant X Free Ranger (modded of course)

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 121 Post(s)
Liked 108 Times in 83 Posts
Originally Posted by MTZER View Post
450g for the crankset including the chainring and GXP cups?!
I would love to know more about that please
No crankset only.

650-720g depending direct mount or spider ring. Same as red dm for power meter
Fentuz is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.