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 Folding Bicycles v4 - Not only Folding Bikes, Folding bicycle discussion

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PaulKong
post Sep 17 2015, 08:37 AM

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QUOTE(etigge @ Sep 17 2015, 12:14 AM)
I think the Deore brakes are single piston. Both mine and wife's MTBs are using it. The only double piston brake calipers  by Shimano is the Saint which are mainly used in downhill bikes. Double pistons means 4 pistons, two on each side. Once you take out the brake pads, you can see more clearly. Double pistons works such a way the the 2 smaller pistons will touch the rotors first before the 2 main pistons clamps in for better modulation.

How's the folding of the brake hydraulic hose? Better be cautious when you fold as the hose don't bend as much as the conventional cable type housing.  Happy riding with your new possession. The Dahon Dash is a fine workhorse.  icon_rolleyes.gif
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Thanks for your explanation on the hydraulic brake. I thought when two caliper moves, it's called twin piston. As for java fit, only one side of the caliper moves.
I've pay attention to the way the hydraulic cables fold, it looks OK. Hopefully it can last.
The rd cable is the one worry me, it pull long after fold and when unfold, the cable doesn't go back in place, have to push it back in position.
I've see the new dahon dash routing for the rd cable goes thru top tube instead of bottom tube. Maybe they realise the problem.
kllam
post Sep 17 2015, 09:11 AM

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QUOTE(PaulKong @ Sep 17 2015, 08:37 AM)
Thanks for your explanation on the hydraulic brake. I thought when two caliper moves, it's called twin piston. As for java fit, only one side of the caliper moves.
I've pay attention to the way the hydraulic cables fold, it looks OK. Hopefully it can last.
The rd cable is the one worry me, it pull long after fold and when unfold, the cable doesn't go back in place, have to push it back in position.
I've see the new dahon dash routing for the rd cable goes thru top tube instead of bottom tube. Maybe they realise the problem.
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i saw the bike on sale too, but current got other things to mod. i did try the new Dash D18 and it feel smaller the Dash P18

for hydraulic brake, it's not advisable to fold the brake hose, the same is with cars and motorcycle, the bent cause by the fold will effect the brakes in long run and the folded area might crack
PaulKong
post Sep 17 2015, 10:56 AM

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QUOTE(kllam @ Sep 17 2015, 09:11 AM)
i saw the bike on sale too, but current got other things to mod. i did try the new Dash D18 and it feel smaller the Dash P18

for hydraulic brake, it's not advisable to fold the brake hose, the same is with cars and motorcycle, the bent cause by the fold will effect the brakes in long run and the folded area might crack
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The front brake should have no problem cause it doesn't fold, it just the back brakes cable. Will pay attention to the folding area.
Thanks for the advice
berzerk
post Sep 17 2015, 11:49 AM

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Hi does anyone know what I would expect to pay for a 20 inch tyre tube with presta valve?
etigge
post Sep 17 2015, 12:01 PM

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QUOTE(berzerk @ Sep 17 2015, 11:49 AM)
Hi does anyone know what I would expect to pay for a 20 inch tyre tube with presta valve?
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Inner tubes is one item that is not standardized. They marked the price in the event they need to provide services to change the tubes too so usually they charge RM15 regardless. If you know a LBS or familiarize with them, they can sell you for RM12 or even RM10 each. Also they depend on the brands and also the material it is made of, mainly butyl rubber or normal. Butyl rubber holds air longer than the usual but the usual is cheaper in price. Off course branding also makes them cheaper or more expensive. Maxxis and Schwalbe is more expensive because they are made thinner , hence lighter. Vee rubbers are actually very good inner tubes and cheap too but not many LBS stocks them. They are thicker and a tad heavier but they really hold air long. icon_rolleyes.gif

Schwalbes sell inner tubes at RM29 rclxub.gif What advantage over Maxxis which are sold at RM16, I can't see the difference except the valve cap is transparent. laugh.gif
etigge
post Sep 17 2015, 12:09 PM

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QUOTE(PaulKong @ Sep 17 2015, 08:37 AM)
Thanks for your explanation on the hydraulic brake. I thought when two caliper moves, it's called twin piston. As for java fit, only one side of the caliper moves.
I've pay attention to the way the hydraulic cables fold, it looks OK. Hopefully it can last.
The rd cable is the one worry me, it pull long after fold and when unfold, the cable doesn't go back in place, have to push it back in position.
I've see the new dahon dash routing for the rd cable goes thru top tube instead of bottom tube. Maybe they realise the problem.
*
Most welcome ! thumbup.gif

Means the Java FIT is fitted with a cheap disc brake mechanical calipers. When only one side moves, it means the piston on one side is pushing the rotors outwards , also bending the rotors. If it gets hot, the rotors may stay in that shape after cooling and then you have a warped rotor. If mechanical brakes are concerned, only the Avid gets my thumbs up. It's ball bearing assisted but the price per set, you can get a Shimano Deore set and even those 4 series Shimano hydraulic sets are better which is even more cheaper.

I have another fellow rider who use the Dash 2010 model (same as mine) and every time she folds, she crimps the gear cable , rendering it unusable. I don't understand it as she didn't let me see the bike. I don't know why, everytime I go see the new Dash, they look so small rclxub.gif And this is the only size this shipment. Jimmy told me I was lucky to actually get an 'L' size Dash. rclxms.gif

This post has been edited by etigge: Sep 17 2015, 12:10 PM
berzerk
post Sep 17 2015, 12:36 PM

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QUOTE(etigge @ Sep 17 2015, 12:01 PM)
Inner tubes is one item that is not standardized. They marked the price in the event they need to provide services to change the tubes too so usually they charge RM15 regardless. If you know a LBS or familiarize with them, they can sell you for RM12 or even RM10 each. Also they depend on the brands and also the material it is made of, mainly butyl rubber or normal. Butyl rubber holds air longer than the usual but the usual is cheaper in price. Off course branding also makes them cheaper or more expensive. Maxxis and Schwalbe is more expensive because they are made thinner , hence lighter. Vee rubbers are actually very good inner tubes and cheap too but not many LBS stocks them. They are thicker and a tad heavier but they really hold air long.  icon_rolleyes.gif

Schwalbes sell inner tubes at RM29  rclxub.gif What advantage over Maxxis which are sold at RM16, I can't see the difference except the valve cap is transparent.  laugh.gif
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Thanks. Like that I'll bring the rim & tyre to the shop then.
o.d
post Sep 17 2015, 01:05 PM

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QUOTE(H2D @ Sep 16 2015, 01:23 PM)
yes indeed.
but in japang, there is 'market' it seems,  biggrin.gif
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I like this kind of look bike. Like oldies. What type of bike is this call? Commuter bike? I want to look for one but not Tern lah. ha ha.
PaulKong
post Sep 17 2015, 04:05 PM

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Etigge,
May I know where can I find machineering shop that can fabricate this aluminium clip. It fell off my fender 😥😥😥


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kllam
post Sep 17 2015, 05:21 PM

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QUOTE(etigge @ Sep 17 2015, 12:09 PM)
Most welcome ! thumbup.gif

Means the Java FIT is fitted with a cheap disc brake mechanical calipers. When only one side moves, it means the piston on one side is pushing the rotors outwards , also bending the rotors. If it gets hot, the rotors may stay in that shape after cooling and then you have a warped rotor. If mechanical brakes are concerned, only the Avid gets my thumbs up. It's ball bearing assisted but the price per set, you can get a Shimano Deore set and even those 4 series Shimano hydraulic sets are better which is even more cheaper.

I have another fellow rider who use the Dash 2010 model (same as mine) and every time she folds, she crimps the gear cable , rendering it unusable. I don't understand it as she didn't let me see the bike. I don't know why, everytime I go see the new Dash, they look so small  rclxub.gif And this is the only size this shipment. Jimmy told me I was lucky to actually get an 'L' size Dash. rclxms.gif
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Java foldie and mini velo is using Avid BB5 disc brake set.

TSH2D
post Sep 17 2015, 05:53 PM

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QUOTE(o.d @ Sep 17 2015, 01:05 PM)
I like this kind of look bike. Like oldies. What type of bike is this call? Commuter bike? I want to look for one but not Tern lah. ha ha.
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city bike, commuter bike, hybrid bike... macam macam .... biggrin.gif

to get the same function u can jz get a cheap mtb n change tyres....


http://www.raleigh.my/raleigh/700c-Sprint.html


etigge
post Sep 17 2015, 06:25 PM

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QUOTE(PaulKong @ Sep 17 2015, 04:05 PM)
Etigge,
May I know where can I find machineering shop that can fabricate this aluminium clip. It fell off my fender 😥😥😥
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Our CNC foundries are not really fond of doing small jobs like this. There's a Malay guy, Zalee is his name. He is always around My Bike Shop in Bandar Utama. If you can locate him, maybe he can help you out. He used to dabble in model helicopters and have lots of contacts regarding powder coating, CNC stuffs and metal anodizing. Maybe he can help you.

Another option is to fabricate using nylon which can be sanded, cut and modelled using normal tools, even glued. I think it is not hard to actually fabricate. Take a picture of the actual component that has dropped off. You still have another sample right, either front or back. Only after looking , I can give an opinion.

PS/Looking at the enlarged picture, I don't think it is hard to make one. Maybe you can bring the sample to me and I can do it.

This post has been edited by etigge: Sep 17 2015, 06:27 PM
desastar
post Sep 17 2015, 06:33 PM

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QUOTE(PaulKong @ Sep 17 2015, 04:05 PM)
Etigge,
May I know where can I find machineering shop that can fabricate this aluminium clip. It fell off my fender 😥😥😥
*
Paul

What about using this sort of stay? I'm sure a slight mod will fit. Much easier than fabricating?




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PaulKong
post Sep 17 2015, 06:33 PM

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QUOTE(etigge @ Sep 17 2015, 06:25 PM)
Our CNC foundries are not really fond of doing small jobs like this. There's a Malay guy, Zalee is his name. He is always around My Bike Shop in Bandar Utama. If you can locate him, maybe he can help you out. He used to dabble in model helicopters and have lots of contacts regarding powder coating, CNC stuffs and metal anodizing. Maybe he can help you.

Another option is to fabricate using nylon which can be sanded, cut and modelled using normal tools, even glued. I think it is not hard to actually fabricate. Take a picture of the actual component that has dropped off. You still have another sample right, either front or back. Only after looking , I can give an opinion.

PS/Looking at the enlarged picture, I don't think it is hard to make one. Maybe you can bring the sample to me and I can do it.
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Here's a few pictures to show how it looks like. Thanks for your help. Really appreciate it.


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PaulKong
post Sep 17 2015, 06:36 PM

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QUOTE(desastar @ Sep 17 2015, 06:33 PM)
Paul

What about using this sort of stay? I'm sure a slight mod will fit. Much easier than fabricating?
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Where to get this?
desastar
post Sep 17 2015, 06:42 PM

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Search for it on the web, should be very easy to find. Would be much neater for your fenders too.
etigge
post Sep 17 2015, 07:39 PM

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QUOTE(PaulKong @ Sep 17 2015, 06:33 PM)
Here's a few pictures to show how it looks like. Thanks for your help. Really appreciate it.
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Surely not the whole block is lost, right? Just the small outermost block only. It should be easy to file the small piece and drill a hole. In fact if you look hard enough in Ace Hardware, at the screws section, there will be some aluminum parts that just need a small modification and filing to suit the contraption.
etigge
post Sep 17 2015, 07:53 PM

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QUOTE(kllam @ Sep 17 2015, 05:21 PM)
Java foldie and mini velo is using Avid BB5 disc brake set.
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It seems the Avid BB5 brake pads are too small and don't work well in the rain. Darn dangerous too as a review said. It is also reviewed that the BB5s needs constant adjustments, sometimes twice on one ride. Most of the reviewers who are also users of the BB5s recommended that it is safer to change to hydraulics but off course in the case of foldies, this is a bit hard. The next best thing is to change the calipers to BB7s which has bigger brake pads ( sadly more expensive too but you don't change pads often ) and also in addition the BB7s can adjust both pads distance. Avid BB7s are the best mechanical disc brakes in the market now and BB5s as reviewed, said the Avids V-brakes stops even better.

Look at the size difference shocking.gif

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rkhairulrijal
post Sep 18 2015, 02:01 AM

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They see me rollin, they hatin
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o.d
post Sep 18 2015, 10:21 AM

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QUOTE(H2D @ Sep 17 2015, 05:53 PM)
city bike, commuter bike, hybrid bike... macam macam ....  biggrin.gif

to get the same function u can jz get a cheap mtb  n change tyres....
http://www.raleigh.my/raleigh/700c-Sprint.html
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thanks H2D, yeah i like this raleigh too, I have interest in it before buying my folding raleigh, but cannot find who sell it.

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