Birdy thread
#2426
Newbie
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#2427
Rider. Wanderer. Creator.
Join Date: May 2007
Location: New Jersey
Posts: 1,312
Bikes: Bike Friday All-Packa & Pocket Rocket, Cinelli Hobootleg, Zizzo Liberte, Ozark Trail G.1 Explorer
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The long dimension 63.00 mm. Depth of flange ring support 11.11 MM. This is off my Zizzo with H&H for Birdy 3. I don't know what is in the pics with the squares. I don't have that. I had to shim a little bit due to slight diameter difference. I would think that the flanges could be rotated and the piece that holds the block could be rotated.,
Back to Birdy talk - I've always admired the look and engineering of those bikes and would love to try one someday...
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Rider. Wanderer. Creator.
JohnMFlores.com | YouTube: JohnMFlores
Insta: JohnMichaelFlores | TikTok: @johnnymotoflores
#2428
Schwinnasaur
Off topic but what pig nose adapter is that on your Zizzo? I have the Zizzo branded version on my Liberté and it has only 1 attachment point at the bottom of the head tube, limiting me to about 5# carrying limit. How much can you carry? Thanks.
Back to Birdy talk - I've always admired the look and engineering of those bikes and would love to try one someday...
Back to Birdy talk - I've always admired the look and engineering of those bikes and would love to try one someday...
You could mount your Zizzo at the top of the head tube. I think that would be better. Not sure why Zizzo shows it mounted below. If you were going to make a funky one legged support, you might as well take advantage of the fact it has only one leg.
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#2429
Just come across this thread while searching for all things Birdy related. I've recently converted a Mk1 Birdy to a Nexus 8 speed IGH. I was finding the chain prone to slipping off the cassette when folding with the previous derailleur as well as it being more prone to picking up dirt (my intention is to convert it to belt drive at some point.
I used a Brompton chain tensioner which, with some judicious fettling, mounts to the back of the derailleur hanger and lines up perfectly with the rear sprocket. I'm tempted to drill the underside the swing arm so I can route the gear cable up the inside. Also to come are some lights to wire into a dynohub up front.
On that note, what are the preferred mounting points for a front light? It feels like options are limited with the fold.
I would post some pics but currently not up to the 10 post threshold
I used a Brompton chain tensioner which, with some judicious fettling, mounts to the back of the derailleur hanger and lines up perfectly with the rear sprocket. I'm tempted to drill the underside the swing arm so I can route the gear cable up the inside. Also to come are some lights to wire into a dynohub up front.
On that note, what are the preferred mounting points for a front light? It feels like options are limited with the fold.
I would post some pics but currently not up to the 10 post threshold
Last edited by Lomaxfairchild; 08-02-24 at 04:25 AM.
#2430
Just come across this thread while searching for all things Birdy related. I've recently converted a Mk1 Birdy to a Nexus 8 speed IGH. I was finding the chain prone to slipping off the cassette when folding with the previous derailleur as well as it being more prone to picking up dirt (my intention is to convert it to belt drive at some point.
I used a Brompton chain tensioner which, with some judicious fettling, mounts to the back of the derailleur hanger and lines up perfectly with the rear sprocket. I'm tempted to drill the underside the swing arm so I can route the gear cable up the inside. Also to come are some lights to wire into a dynohub up front.
On that note, what are the preferred mounting points for a front light? It feels like options are limited with the fold.
I would post some pics but currently not up to the 10 post threshold
I used a Brompton chain tensioner which, with some judicious fettling, mounts to the back of the derailleur hanger and lines up perfectly with the rear sprocket. I'm tempted to drill the underside the swing arm so I can route the gear cable up the inside. Also to come are some lights to wire into a dynohub up front.
On that note, what are the preferred mounting points for a front light? It feels like options are limited with the fold.
I would post some pics but currently not up to the 10 post threshold
I'm already looking forward to you making your 10 posts, so you can post photos of your bike and details. I'm planning to do the same with an Alfine 11, plus a front engine.
#2431
Senior Member
The factory front light mounting is on the left side of the fork with a special plate attached to the inner side of the fork threaded hole (the same threaded hole used for the pin that holds the front wheel folded on the right side of the fork).
#2432
There is an option to put the light on the front fork in a support sold on Aliexpress, but I don't think that is such a good solution, I would put it directly on the handlebar.
I'm already looking forward to you making your 10 posts, so you can post photos of your bike and details. I'm planning to do the same with an Alfine 11, plus a front engine.
I'm already looking forward to you making your 10 posts, so you can post photos of your bike and details. I'm planning to do the same with an Alfine 11, plus a front engine.
Last edited by Lomaxfairchild; 08-06-24 at 03:53 AM.
#2433
#2434
Senior Member
Yes, they do, I bought one for my Birdy Titanium that wasn't factory equipped with lights.
Now, the fork of the several Birdy models, Birdy 1, Birdy 2 and Birdy 3 are different, there is a different one for Birdy <2016 but is it usable for a Birdy 1 (before 2016 there were the Birdy 1, Birdy 2 hydroformed frame and Birdy 2 World with frame made of tubes like for the Birdy 1 but a different one) ?
The one for Birdy <2016 (sorry, its a Dutch webshop).
The one for Birdy from 2016 = Birdy 3 (same Dutch webshop).
Now, the fork of the several Birdy models, Birdy 1, Birdy 2 and Birdy 3 are different, there is a different one for Birdy <2016 but is it usable for a Birdy 1 (before 2016 there were the Birdy 1, Birdy 2 hydroformed frame and Birdy 2 World with frame made of tubes like for the Birdy 1 but a different one) ?
The one for Birdy <2016 (sorry, its a Dutch webshop).
The one for Birdy from 2016 = Birdy 3 (same Dutch webshop).
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#2435
Yes, they do, I bought one for my Birdy Titanium that wasn't factory equipped with lights.
Now, the fork of the several Birdy models, Birdy 1, Birdy 2 and Birdy 3 are different, there is a different one for Birdy <2016 but is it usable for a Birdy 1 (before 2016 there were the Birdy 1, Birdy 2 hydroformed frame and Birdy 2 World with frame made of tubes like for the Birdy 1 but a different one) ?
Now, the fork of the several Birdy models, Birdy 1, Birdy 2 and Birdy 3 are different, there is a different one for Birdy <2016 but is it usable for a Birdy 1 (before 2016 there were the Birdy 1, Birdy 2 hydroformed frame and Birdy 2 World with frame made of tubes like for the Birdy 1 but a different one) ?
#2436
There is an option to put the light on the front fork in a support sold on Aliexpress, but I don't think that is such a good solution, I would put it directly on the handlebar.
I'm already looking forward to you making your 10 posts, so you can post photos of your bike and details. I'm planning to do the same with an Alfine 11, plus a front engine.
I'm already looking forward to you making your 10 posts, so you can post photos of your bike and details. I'm planning to do the same with an Alfine 11, plus a front engine.
Notes about the conversion:
- Buying the vertical dropout kit (blue and green) and swapping them over puts the cassette arm at the right angle.
- The cassette arm needs bending out slightly to avoid snagging the chain but is fine once this is done.
- The Brompton tensioner works really well and, IMO, looks better than the one R&M use on their IGH models. However, mounting it requires a bit of hacking about:
- You need to cut the shape of the hanger into the ring on the front of the tensioner (see third pic) and then bolt to the back of the hanger with an allen bolt and large washer. I used a hacksaw and file but a Dremel would be better.
- In order to bolt the tensioner to the hanger, the wheel needs to be in place, which then blocks access to the bolt. I solved this by drilling out the rest to make a hollow bolt I could run an allen key through from the front (you'll see from the third pic again that my drilling was slightly off centre).
- There's a lug on the leading edge of the tensioner mount which also needs filing off as it snags with the selector in top gear (this will be apparent when you try to mount it).
Last edited by Lomaxfairchild; 08-06-24 at 09:09 AM.
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#2437
Senior Member
Yes, I know, they only ship to The Netherlands and Belgium but any Riese & Müller dealer (even if they sell only R&M ebikes and do not sell the Birdy) can order these parts for you and any Birdy spare part if you tell them what part you need.
Your solution that use a Brompton chain tensionner on a Birdy is very nice. Its only drawback is that it works only on a bike without rear derailleur.
Your solution that use a Brompton chain tensionner on a Birdy is very nice. Its only drawback is that it works only on a bike without rear derailleur.
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#2440
#2442
It's great to see your modifications and fixes, they are very creative.
The only thing I'm a bit hesitant about are the holes in the frame. Aren't you worried about possible cracks? Can you think of a solution to reinforce the hole area?
My project is an electric birdy with a front engine and an IGH at the back and a belt drive.
(photos coming soon)
The only thing I'm a bit hesitant about are the holes in the frame. Aren't you worried about possible cracks? Can you think of a solution to reinforce the hole area?
My project is an electric birdy with a front engine and an IGH at the back and a belt drive.
(photos coming soon)
#2443
It's great to see your modifications and fixes, they are very creative.
The only thing I'm a bit hesitant about are the holes in the frame. Aren't you worried about possible cracks? Can you think of a solution to reinforce the hole area?
My project is an electric birdy with a front engine and an IGH at the back and a belt drive.
(photos coming soon)
The only thing I'm a bit hesitant about are the holes in the frame. Aren't you worried about possible cracks? Can you think of a solution to reinforce the hole area?
My project is an electric birdy with a front engine and an IGH at the back and a belt drive.
(photos coming soon)
Looking forward to seeing pics of yours
#2444
Senior Member
It's great to see your modifications and fixes, they are very creative.
The only thing I'm a bit hesitant about are the holes in the frame. Aren't you worried about possible cracks? Can you think of a solution to reinforce the hole area?
My project is an electric birdy with a front engine and an IGH at the back and a belt drive.
(photos coming soon)
The only thing I'm a bit hesitant about are the holes in the frame. Aren't you worried about possible cracks? Can you think of a solution to reinforce the hole area?
My project is an electric birdy with a front engine and an IGH at the back and a belt drive.
(photos coming soon)
#2445
It seems to me that the front fork with its parallelogram structure is more solid than the rear fork with a single fat arm without structural support and it is easier to put an anti-torsion arm on the front.
The problem I found is that only two motors fit in it.
The 4.5 kg crystalyte 406 and the motor of the Xiaomi QiCYCLE EF1 bike, only 1.5 kg.
First I am going to try with the crystalyte because they sold it to me with the rim already installed
The other one I have to assemble myself and it will take me a few weeks when I have everything ready and if I am not mistaken when taking the measurements of the spokes
The problem I found is that only two motors fit in it.
The 4.5 kg crystalyte 406 and the motor of the Xiaomi QiCYCLE EF1 bike, only 1.5 kg.
First I am going to try with the crystalyte because they sold it to me with the rim already installed
The other one I have to assemble myself and it will take me a few weeks when I have everything ready and if I am not mistaken when taking the measurements of the spokes
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#2448
#2449
For optimal weight distribution I have a 10ah battery that will hang under the tube, pulled backwards.
And I was thinking of a second battery of another 10ah, but I don't know if it will hang from the seat backwards or if I will use the rear rack.
I have to see how it feels when I ride it and if I really need a second battery.
and surely the weights will vary with the second much lighter engine
And I was thinking of a second battery of another 10ah, but I don't know if it will hang from the seat backwards or if I will use the rear rack.
I have to see how it feels when I ride it and if I really need a second battery.
and surely the weights will vary with the second much lighter engine
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#2450
For optimal weight distribution I have a 10ah battery that will hang under the tube, pulled backwards.
And I was thinking of a second battery of another 10ah, but I don't know if it will hang from the seat backwards or if I will use the rear rack.
I have to see how it feels when I ride it and if I really need a second battery.
and surely the weights will vary with the second much lighter engine
And I was thinking of a second battery of another 10ah, but I don't know if it will hang from the seat backwards or if I will use the rear rack.
I have to see how it feels when I ride it and if I really need a second battery.
and surely the weights will vary with the second much lighter engine
Have you tried folding it with the 4.5kg motor in place? I'd imagine it makes it quite hard?