Dahon Folding Bicycle Forum: Technical http://www.dahon.com/forum/index.php Fri, 20 Nov 2009 18:05:30 -0700 30 http://www.dahon.com/forum/index.php?showtopic=7832
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]]> Fri, 20 Nov 2009 14:33:26 -0700 http://www.dahon.com/forum/index.php?showtopic=7832 http://www.dahon.com/forum/index.php?showtopic=7831 It's me again. I am having such a hard time trying to get 1/2" folding pedals.
I have tried everywhere. I've checked all the bike shops and on line auctions
I did however find a place that has adapters that convert the pedal from 9/16" to 1/2"
They are very expensive and make the pedals stick out about 20mm ( a little less than an inch)
Anyway if you ever hear or see any folding pedals that are 1/2" please tell me.
Thanks very much,
Phil
]]> Fri, 20 Nov 2009 13:42:34 -0700 http://www.dahon.com/forum/index.php?showtopic=7831 http://www.dahon.com/forum/index.php?showtopic=7829 The main bike im looking at is the dahon speed d7.

Thanks alot guys.]]> Thu, 19 Nov 2009 23:39:22 -0700 http://www.dahon.com/forum/index.php?showtopic=7829 http://www.dahon.com/forum/index.php?showtopic=7825 I am toiling around the idea to have a couple extra Handlebars for sale which would work on Dahons.

No 1: would probably something like the Soma Sparrow .... that is a bend backwards or moustache bar with a 2 inch rise ( or drop ) ... this is a rather narrow bar and not
No 2: a mountain bike handlebar with a nice 2 inch rise ..probably a little too wide , but could be easily cut off at the ends

what you guys and gals think about that .... maybe pics of somebodies success mod? Or also a no if it didnt work for you ....

Thor]]> Thu, 19 Nov 2009 09:12:43 -0700 http://www.dahon.com/forum/index.php?showtopic=7825 http://www.dahon.com/forum/index.php?showtopic=7824
Just about to get my hands on a Mu Uno and already thinking about some additions and upgrades

I was wondering if anyone here has tried fitting either moustache or bull-horn style bars to the Uno?
I would be very grateful to hear of your experiences!

Regards

Spiny]]> Thu, 19 Nov 2009 05:34:11 -0700 http://www.dahon.com/forum/index.php?showtopic=7824 http://www.dahon.com/forum/index.php?showtopic=7823 Have a delightful hammerhead - which seems to be harder to pedal than usual .... and I am pretty sure it is not me - it just doesnt feel right. Can the hubs be serviced ? Thu, 19 Nov 2009 04:04:52 -0700 http://www.dahon.com/forum/index.php?showtopic=7823 http://www.dahon.com/forum/index.php?showtopic=7815
Does anyone know where those parts diagrams are? They were shown by model and were Adobe Acrobat format and were very good. Now I can't find them.

Help!

Louie]]> Tue, 17 Nov 2009 15:11:48 -0700 http://www.dahon.com/forum/index.php?showtopic=7815 http://www.dahon.com/forum/index.php?showtopic=7813
I ride with the post almost all the way out (at the 2 1/2 mark) and am wondering whether a longer post that leaves more in the frame may somehow help.

thanks for any input.]]> Tue, 17 Nov 2009 11:05:02 -0700 http://www.dahon.com/forum/index.php?showtopic=7813 http://www.dahon.com/forum/index.php?showtopic=7809 I can't find replacement pedals for my Dahon Classic 3. The pedals are actually less than the standard
1/2" pedals The one folding pedal is marked "VP-112" the non -folding pedal is marked "VP-877"
I have taken these to the bike shop to confirm the size and they agree the size is not the standard
1/2" or 9/16". I have also gone on the "Victor" web site that should have had info. on the pedals, but they
did not. Please can anybody out there help me. Picture of Bike is attached.
Thanks very much,
Phil]]> Mon, 16 Nov 2009 08:42:16 -0700 http://www.dahon.com/forum/index.php?showtopic=7809 http://www.dahon.com/forum/index.php?showtopic=7808
Is this normal or should I be worried about it? I am afraid that there may be a problem after a while, with the part going apart the rest of the fork. Should I ask for a repair/replacement while this is under warranty?

The problem is that the shop of the purchase is rather far away, so is the local distributor.
I tried to find an email for contacting Dahon Support/Service, in order to get an official reply to my question before contacting the locals, but I couldn't locate any...

Thank you in advance for your replies.]]> Mon, 16 Nov 2009 05:24:04 -0700 http://www.dahon.com/forum/index.php?showtopic=7808 http://www.dahon.com/forum/index.php?showtopic=7807 Is it possible to turn a MuP8 into a MuP24 with the simple addition of a 3spd hub assembly? Or must I purchase a dualdrive and refit the entire mechanism, derailleur and all?
What would be required? I find that the 8 speed leaves me feeling like I need another gear in many situations.
Thanks]]> Sun, 15 Nov 2009 19:01:21 -0700 http://www.dahon.com/forum/index.php?showtopic=7807 http://www.dahon.com/forum/index.php?showtopic=7806
But I don't know where to start, I don't know what kind of hub and spokes are suitable.

May you give me some points. Thanks]]> Sun, 15 Nov 2009 12:51:05 -0700 http://www.dahon.com/forum/index.php?showtopic=7806 http://www.dahon.com/forum/index.php?showtopic=7801 Speed, and my mechanic says it's time for a new wheel. I have a Carradice SQR Slim that attaches to the seat post, and when I go shopping I sometimes fill it up with heavy items like cans of beer and bottles of wine. I weigh nearly 200 lbs. myself, so I guess the wheel just wasn't made for that much weight.

Rather than just putting another stock wheel on the bike, I'd like to upgrade to a stronger one. Any suggestions? I know that some of you tour on your Dahons. Have you upgraded?]]> Sat, 14 Nov 2009 14:10:15 -0700 http://www.dahon.com/forum/index.php?showtopic=7801 http://www.dahon.com/forum/index.php?showtopic=7799
Thanks!]]> Fri, 13 Nov 2009 16:44:11 -0700 http://www.dahon.com/forum/index.php?showtopic=7799 http://www.dahon.com/forum/index.php?showtopic=7796
I fold my bike at least once a day, sometimes twice. I had to tighten the latch since it was loose a couple of months ago. It is now noticeably looser again. How often do these types of latches (ViseGrip style), have to be tightened with this kind of usage? Is this normal?

Thanks,
Mike]]> Thu, 12 Nov 2009 10:44:45 -0700 http://www.dahon.com/forum/index.php?showtopic=7796 http://www.dahon.com/forum/index.php?showtopic=7793 Sturmey-Archer.

May be a bit powerful for a 20" wheel, but anyone with the ability to put one into a 20" wheel will no doubt have mastered the art of braking by now.

I have used the single speed version of this brake in a muddy 24 hour race, and there was no obvious wear although other riders were wearing out brake pads on their disk brakes.

They also make gear hub versions.]]> Tue, 10 Nov 2009 17:23:51 -0700 http://www.dahon.com/forum/index.php?showtopic=7793 http://www.dahon.com/forum/index.php?showtopic=7789 I have Dual Chainring 53/39 and because D7 has 11-30 cassette the NEOS isn't able to take the chain (53-39) + (11-30) = 33
It's working only with combination 39 and 30 (39 and 24 - the chain is slack). I need a new rear derailleur.

As TrailX mentioned here - "The Neos mounts on the frame chainstay and on the chro-moly steel Speed D7frame which has steel dropouts, no other derailleur can be used." (see the red cicles on these two images)
http://www.dahon.com/forum/index.php?act=attach&type=post&id=4024 http://www.dahon.com/forum/index.php?act=attach&type=post&id=4025

Do anybody have experience how to change rear derailleur on Speed D7?
It doesn't matter if using a special one (which one please) on the market or inserting special derailleur hanger (which one please) or making this special hanger (do you have picture please) ...
I just need to know the best way how to deal with that.

Thank you]]> Tue, 10 Nov 2009 03:51:21 -0700 http://www.dahon.com/forum/index.php?showtopic=7789 http://www.dahon.com/forum/index.php?showtopic=7785
Second time out, it broke out about 4" of the perimeter of the outside diameter. I think my heel may have caught it a little, but very lightly, and certainly shouldn't have broken it.

Anybody else had this happen?

Sad to read in the other thread that Thor doesn't have the gaurds, although maybe he can get the stock one like I need. I have an e-mail into him to find out.

Any other suggestions?]]> Mon, 09 Nov 2009 19:25:15 -0700 http://www.dahon.com/forum/index.php?showtopic=7785 http://www.dahon.com/forum/index.php?showtopic=7782
I realize that Dahon apparently sourced the original brakes from a less-than-well-known manufacturer, but is there a really valid reason (like safety?) for specifying the shorter arms?

If I do switch to the Avid V-brakes, will I then have "too much power" due to the longer arms?

All opinions welcome, but unless someone provides an answer that makes sense, I will likely change the brakes simply to see what the difference is. What the heck?]]> Sun, 08 Nov 2009 09:39:01 -0700 http://www.dahon.com/forum/index.php?showtopic=7782 http://www.dahon.com/forum/index.php?showtopic=7775
When I googled the above, there was a link to an old thread on this forum that stated the axle is 113mm JIS taper and the shell is 73mm ISO oversized.
These measurements do not tally with my own. I make the axle to be 103.7mm and the shell 68.8mm.

I would really like the correct dimensions so that I can order a new bottom bracket, either a Phil wood or a sugino (the only manufacturer besides Phill Wood who seem to make a 103mm BB). But I need to be sure so that I can obtain the correct chain line for the Alfine hub.



]]> Thu, 05 Nov 2009 08:37:45 -0700 http://www.dahon.com/forum/index.php?showtopic=7775 http://www.dahon.com/forum/index.php?showtopic=7774 Geoff Adams]]> Thu, 05 Nov 2009 05:26:55 -0700 http://www.dahon.com/forum/index.php?showtopic=7774 http://www.dahon.com/forum/index.php?showtopic=7773
When I tried to screw it back in, it won`t tension which tells me that my installer probably stripped it during assembly (if that was even part of assembly). Or it`s a factory defect.

What are my options? How important are the 2 small screws that hold the main hinge bolt in place? Can I possibly drill out the hold a fraction larger and use a slightly larger machine bolt?

I`m worried because I love my new bike but now I feel the main frame hinge is permanently damaged.

HELP!


Tim]]> Thu, 05 Nov 2009 04:30:19 -0700 http://www.dahon.com/forum/index.php?showtopic=7773 http://www.dahon.com/forum/index.php?showtopic=7771 Where on the Dahon web site are descriptions of the various frame series? The Speed D7 is a K series but how does that differ from an R series? Wed, 04 Nov 2009 17:42:01 -0700 http://www.dahon.com/forum/index.php?showtopic=7771 http://www.dahon.com/forum/index.php?showtopic=7770
The Dahon manual states that the Dahon V-clamp hinge should be tightened so that "the hinge opens and closes with the correct amount of force which is 39~88 N for aluminum frames". (Owner's Manual, page 19-21). I assume that the manual means "Nm", and if so is this correct? Should it instead be 39-88 in/lbs? It seems that 39-88 Nm is a lot of force.

The same question applies to the handlepost hinge where the manual states "Adjust the latch bolt until the latch opens and closes with 29~49 N of force." (Owner's Manual, page 16).

Assuming that is correct, is that approximately the same force as is used to tighten QR levers?

Thanks.

--william

Edit: Assuming that the units are incorrect then 39-88 in/lbs = 4.4-9.9 Nm and 29-49 in/bls = 3.3-5.5 Nm. These seem more reasonable -- possible typo in the Owner's Manual?]]> Wed, 04 Nov 2009 14:45:38 -0700 http://www.dahon.com/forum/index.php?showtopic=7770 http://www.dahon.com/forum/index.php?showtopic=7769
Thanks!

--william

(BTW, just purchased this bike from Thor after talking to him for his advice. He was knowledgeable and the bike arrived without damage in under a week).

]]> Wed, 04 Nov 2009 10:19:33 -0700 http://www.dahon.com/forum/index.php?showtopic=7769 http://www.dahon.com/forum/index.php?showtopic=7760
There was no obvious damage to the rim before the repair, just two vaguely opposite spokes had broken just inside the nipple.

The repaired wheel now runs very straight across the rim, but has a noticeable bulge of maybe 2mm when viewed side-on using the brake blocks as a reference point. I haven't yet replaced the tire and ridden the bike but I'm concerned there would be significant vibration at speed, and I can't imagine it will roll all that efficiently!

Is this as good as I can expect, or should it be possible to get the wheel closer to truly round?

Also, the bike shop was unable to source matching replacement spokes so has used "regular" ones (and painted them black so they don't stand out...!!) - Is this OK or would you expect them perhaps not to last long?

Many thanks for any advice...

Chris.]]> Tue, 03 Nov 2009 04:37:39 -0700 http://www.dahon.com/forum/index.php?showtopic=7760 http://www.dahon.com/forum/index.php?showtopic=7758
I'd don't see the problem as unsolvable or as the fault of the dealer selling via the Internet. Dahon just needs to attend to how its Chinese manufactures box their products up. Now I have to wait at least a week more to ride the Mu P24, but, of course, I have the delightful Speed in the meanwhile, which presumably I will not be able to justify keeping once the P24 is operational. Thus regretfully I shall have to condemn it craigslist. Anyway, to those getting their Dahons shipped to them, a word of warning.

Terry ]]> Mon, 02 Nov 2009 09:55:58 -0700 http://www.dahon.com/forum/index.php?showtopic=7758 http://www.dahon.com/forum/index.php?showtopic=7754 I have just bought a 2008 speed pro tt; the front wheel with internal nipples needs truing. Can anyone tell me what kind of nipple driver do I need to adjust the wheel? I have tried Rolf Prima 3/16 without any successes. And where can I get this tool? Any suggestions would be appreciated.

Joe Bui]]> Sun, 01 Nov 2009 00:13:32 -0600 http://www.dahon.com/forum/index.php?showtopic=7754 http://www.dahon.com/forum/index.php?showtopic=7751 , I would like to ask:

1)Will the Magura HS33 Firm-tech brake will fit my 2008 Speed P8?

Their website states: "FIRM-tech is a featherlight high-tech package consisting of a slimline HS 33 rim brake fully integrated into a state-of-art MAGURA suspension fork"

My guess is, that means it doesn't? It mentions that it requires no boosters, or adapters, which sounds quite sexy.

2) If it doesn't, is the installation of the "regular" HS33 really as easy as the instructions seem to suggest? At least for someone who is mildly technically gifted?

3) Finally, most websites selling these brake state the following: "Includes: 1350mm-front and/or 1350mm-rear pre-bled (cut-to-fit) tubing" I haven't measured the existing cables, but won't they be too long for my Dahon? Does cut to fit in this case mean you can cut it to fit it, or does it mean, it is cut already, to fit xyz?

Any input, greatly appreciated.

]]> Fri, 30 Oct 2009 12:33:10 -0600 http://www.dahon.com/forum/index.php?showtopic=7751 http://www.dahon.com/forum/index.php?showtopic=7748 http://www.thorusa.com/dahon/technical/rearshock.htm

somebody was asking me the other day but with all the orders on my desk ( I am kidding)
I cant find his address
thats why I post it here for him to find ( hopefully)

good info from our friends at Dahon
Thanks Thor]]> Thu, 29 Oct 2009 11:48:17 -0600 http://www.dahon.com/forum/index.php?showtopic=7748