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Old 10-26-17, 10:51 AM   #1
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Dahon Mu vs Mariner

Folks, it's time to upgrade my commuter. PUtting my Boardwalk S1 for sale on Craigslist. It has served well...but time to broaden my horizon. And the SS just don't give the same kick anymore.

Replacement...systematically narrowed down many candidates down to Dahon Mu 10 Tour...was about to pull the trigger...then noticed the Mariner 8.

To my surprise, the Mariner (26#) is 2.5 pounds lighter and $400 cheaper than Mu (28.5#)! What? Please explain to me why the better component bike (Mu) is heavier, on two identically accessorized bikes?

Mu should definitely have higher quality components...so I thought that usually means lighter weight...what am I missing? Is it due to the funky curved frame on the Mu? The two extra speeds on the Mu couldn't weight 2 pounds more...can it?


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Old 10-26-17, 12:04 PM   #2
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Okay answering my own question...I found out the Mu comes with a pump in the seat post. That could possibly explain the increase weight. Mu also has newer hinge clamp...might be beefier? Mu also has a beefier looking tires. Starting to make sense.

New question: how does the seat post pump work? Good? Durable?
I already have a expensive Topeak mini pump. But an integrated (invisible) pump would be awesome.

Last edited by mtb_addict; 10-26-17 at 12:08 PM.
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Old 10-26-17, 12:21 PM   #3
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New question: how does the seat post pump work? Good? Durable?
I already have a expensive Topeak mini pump. But an integrated (invisible) pump would be awesome.
They are fine for pumping (at least mine is) but the older ones had the habit of falling down every once in a while, scrubbing the road. I think they changed the design a bit so better now.
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Old 10-26-17, 02:01 PM   #4
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The Mu D10 Tour is a very nice bike and despite the comparison to the Mariner D8, it is good value for the money.

In the spirit of the "1 by" fashion that is popular in Mountain bikes, Gravel Bikes etc, the D10's 10 Speed Tiagra Transmission has a very wide range on the cassette (see the cassette picture). It is a fast bike but also a good platform for Touring with such a wide range of gears.

Some of the unseen, but important details, include the Mu's use double wall wheels and have sealed bearings both in the Hubs. Quick Release Skewers. Very important is the sealed Bottom Bracket that is standard in the D10. I often upgrade BB's on Mariners and Vitesse as it really makes for a nicer bike.

The Handlebar Clamp on the D10 is also really nice. Wider and very ergonomic.
Internally routed Cables.
The Mu Frame Clamp itself is mostly just very beautiful and functional.

The Post Pump is worth $60 on the Mu D10 tour (prior Mu D10s did not have rack, fenders or post pump - which are all included in this bike)

On the Flip side, the Mariner has a good price $350 less. 8 Speeds now instead of 7 as prior. It also has a frame clamp and hinge which I like, in that I can modify somewhat to make the bike a "take a part" and fit it into a 62" suitcase.

Arguably Nutted hubs mean your wheels are less likely to be stolen. The Mariner is in general the same bike as the Vitesse I7 but it uses a Shimano Acera 8 Speed Derailleur instead of the Shimano I7 Nexus.

One nice upgrade for the Mariner to consider is putting a 2 speed front Patterson Crank in it. 16 Speeds then.

I try to keep all these in stock. These pictures are of the D10 I have been keeping in the front window.

They are both good bikes. (Don't overlook the 18 Speed Visc D18 Tour for $50 more). Most features are similar to the Mu.
Attached Images
File Type: jpg 2017-10-26 13.26.40 compressed.jpg (83.6 KB, 108 views)
File Type: jpg 2017-10-26 13.26.31 compressed.jpg (68.8 KB, 109 views)
File Type: jpg 2017-10-26 13.27.04 compressed.jpg (32.3 KB, 108 views)
File Type: jpg 2017-10-26 13.47.03 compressed.jpg (52.3 KB, 108 views)
File Type: jpg mud10t.jpg (56.9 KB, 108 views)

Last edited by L Arnold; 10-26-17 at 02:08 PM.
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Old 10-26-17, 03:02 PM   #5
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... The Mariner is in general the same bike as the Vitesse I7 but it uses a Shimano Acera 8 Speed Derailleur instead of the Shimano I7 Nexus. ...
Does the current Mariner D8 have a luggage block?

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Old 10-26-17, 03:19 PM   #6
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Does the current Mariner D8 have a luggage block?

-HANK RYAN-
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Hi Hank,
Yes, all of the Mariner D8's do have the luggage block. Dahon also has the Luggage Truss and related accessories now that work well.
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Old 10-26-17, 03:25 PM   #7
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On the picture of the Tiagra Derailleur 3 posts above there is a second threaded 10mm hole in the frame. Does anyone know what these are for? I have been unable to find explanation.

I can conjure a way to carry a separate derailleur while on tour or perhaps a place to mount the derailleur should the hanger break or get bent into an unusable way. Conceivably it might allow a longer throw derailleur.. Just not clear.

These are also on the Visc D18's that I have. Mu SL11 also.
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Old 10-26-17, 03:38 PM   #8
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My Walmart mtb has a guard over the derailor.

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Old 10-26-17, 03:38 PM   #9
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I have an old Mu XL (~2006 vintage). It has an IGH and over 12,000 miles on it. It's my dedicated "winter" bike now.
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Old 10-27-17, 08:37 AM   #10
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I just realize the Mu comes with BMX-like very beefier 1.95" tires. Much unnecessarily tuff for me. Will I be able to fit some lower friction tires, like for riding a century on smooth roads to maximize speed?
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Old 10-27-17, 09:44 AM   #11
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I just realize the Mu comes with BMX-like very beefier 1.95" tires. Much unnecessarily tuff for me. Will I be able to fit some lower friction tires, like for riding a century on smooth roads to maximize speed?
Sure.... take all the fenders, carrier etc off, put some narrow light tires on it and its a light rocket
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Old 10-27-17, 11:02 AM   #12
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On the picture of the Tiagra Derailleur 3 posts above there is a second threaded 10mm hole in the frame. Does anyone know what these are for?
Fitting a Dahon Neos derailleur. Dahon frames are outfitted with different components to create different models at multiple price points for various markets.

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Old 10-27-17, 01:14 PM   #13
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I like the look of the Neo derailor. Like more tucked away for safety.
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Old 10-27-17, 01:29 PM   #14
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I wouldn't be in any hurry to "upgrade" to a Neos RD. One such experience here:

https://www.bikeforums.net/folding-b...erailleur.html
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Old 10-27-17, 01:58 PM   #15
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Mu is the proper response to one Zen Buddhist, Koan , but I don't remember the Question.
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Old 10-27-17, 02:21 PM   #16
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I wouldn't be in any hurry to "upgrade" to a Neos RD.
Neos on wife's Mu has worked perfectly & unobtrusively for past nine years. I'm not overly fond of derailleur placement ahead of the axle (top end builder Klein used to do this) but it's okay.
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Old 10-27-17, 02:38 PM   #17
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Neos on wife's Mu has worked perfectly & unobtrusively for past nine years. I'm not overly fond of derailleur placement ahead of the axle (top end builder Klein used to do this) but it's okay.
Does the Neos prevent bendage?

Like last week, I leaned my bike road bike against the wall, but it started rolling and fell over...and bent the derailor.

Would the design of the Neos have prevented that?
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Old 10-27-17, 03:25 PM   #18
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Did the fall bend the derailleur, or the derailleur hanger? The derailleur hanger can be realigned...the derailleur, not so much.

Where I have a problem with the Neos is with the proprietary nature of the system. If you had purchased a Dahon or Tern frame that was designed around the Neos and it fails, your only options are to get another Neos, or to get the RD hanger adapter that allows use of a conventional RD. The Neos ain't cheap, the hanger ain't cheap. I like more options, not less, in my folders, and would never buy into a Dahon or Tern that featured the Neos for this reason. The usual disclaimers: Your mileage may vary, ask your doctor or pharmacist, etc.
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Old 10-27-17, 03:32 PM   #19
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Did the fall bend the derailleur, or the derailleur hanger? The derailleur hanger can be realigned...the derailleur, not so much.
I don't know...I didn't have time to look closely, but the chain kept rubbing after dropping it...so I just grabbed the cage plate near the lower idler pulley, and pulled it a few times to bent it until the chain rubbing went away.
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Old 10-27-17, 03:37 PM   #20
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You really need a RD hanger alignment tool like the Park DAG-1 or 2 to realign the RD hanger properly. Doing it "by hand" may not cut it. You'll know if it's even the slightest bit of out alignment because it won't index and shift properly across the entire range.
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Old 10-27-17, 03:53 PM   #21
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Neos Derailleur on a Mu P8. The Neos was lower profile but difficult to make adjustments too. At least in the US it was let go after 2014 in my understanding. Some bikes were sold on closeout after that (like the Mu P8). I understand there was a second manufacturer. Not sure if that changes things. It works fine on the two bikes I have been around but I do prefer the Tiagra for sure.

If you need a new Nexus Dahon does have them available still. Not sure where else you will find them. Perhaps Tern as link to them started this part of the discussion.
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Old 10-28-17, 08:40 AM   #22
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...your only options are to get another Neos, or to get the RD hanger adapter that allows use of a conventional RD. The Neos ain't cheap, the hanger ain't cheap.
ThorUSA lists a Dahon replacement hanger for a conventional rear derailleur @ $20USD.
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Old 10-28-17, 09:43 AM   #23
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I think you missed my point. I was talking about the hanger adapter from Neos to conventional, not the replacement Dahon Mu Dropout Hanger for $20 which is what you need if you bend or break your conventional hanger.

In that same link, there is the Tern conversion hanger for $30, but that's only for Tern. Not sure that Thor even sells an adapter for Dahon Neos to conventional.
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Old 10-28-17, 03:49 PM   #24
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I think you missed my point. I was talking about the hanger adapter from Neos to conventional, not the replacement Dahon Mu Dropout Hanger for $20 which is what you need if you bend or break your conventional hanger.
It's the same thing.
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Old 10-28-17, 04:20 PM   #25
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It's the same thing.
I assume you're talking about the Tern Conversion Hanger, because you're not specific about whether you mean the conversion hanger or the replacement hanger is the same thing. The Tern conversion hanger doesn't have the right profile to fit the Dahon Mu P8 pictured above. Thor lists the Tern conversion hanger as Tern Specific on his website and lists the Tern models it fits, doesn't say anything about it fitting Dahons. So not sure where you're coming from.
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