Helix Update?
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Note the last picture. Unfinished titanium main frame triangles identical to Helix and smallish looking wheels with Alfine hubs on a rack. In Toronto.
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The Schwalbe Kojak was previously available in ETRTO507. Unfortunately, Schwalbe discontinued the Kojak in this wheel size.
I suppose that the one DigDub found were a new old stock ?
I suppose that the one DigDub found were a new old stock ?
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My ideal tire would be flat resistant, lightweight and suitable for concrete, asphalt and "fire roads (typically dirt and/or gravel) and "comfortable". With the limited selection available for the Helix ETRTO 507 wheels, limited to a maximum diameter of 40mm/1.5", any thoughts? At my age I'm not as interested in speed as once I was; I just want a comfortable, relaxing ride without beating myself up or stopping to fix flats.
#2586
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My ideal tire would be flat resistant, lightweight and suitable for concrete, asphalt and "fire roads (typically dirt and/or gravel) and "comfortable". With the limited selection available for the Helix ETRTO 507 wheels, limited to a maximum diameter of 40mm/1.5", any thoughts? At my age I'm not as interested in speed as once I was; I just want a comfortable, relaxing ride without beating myself up or stopping to fix flats.
Last edited by joey buzzard; 04-24-21 at 04:49 AM.
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Yes, the Marathon Green are good tires. Marathon Mondial folding even better.
The Marathon Mondial doesn't exist in ETRTO507, the Marathon is 47x507 (like Marathon Plus), too wide for Helix.
That's the problem of Helix: most ETRTO507 tires are too wide for him !
The Marathon Mondial doesn't exist in ETRTO507, the Marathon is 47x507 (like Marathon Plus), too wide for Helix.
That's the problem of Helix: most ETRTO507 tires are too wide for him !
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DigDub Where did you find the Kojak tires? I've been looking for a pair but can't seem to find them. Do they inhibit the fold at all? Thanks!
shopee.com.my/amp/SCHWALBE-24-1.50-TIRE-85PSI-40-507-WB12-96-i.218361196.7650389477
Likes For DigDub:
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Helix rear wheel removal & re-installation: My Helix bike is due to be shipped in early June. As I waste time thinking about the problems that i might encounter (e.g., tire replacement, saddle angle adjustment, ...) I started to wonder about the mechanics of inner tube replacement when the inevitable un-patchable flat occurs during a ride (at night, in the rain, to make it worse). Replacing the front tube, of course, does not require wheel removal; the rear, of course, does. Given the use of a solid axle and the component that locks into the front wheel when the bike is folded, how difficult is it to remove the rear wheel? tools required? time required?
(Yes, the easy way would be to "Uber" home...)
(Yes, the easy way would be to "Uber" home...)
#2591
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Helix rear wheel removal & re-installation: My Helix bike is due to be shipped in early June. As I waste time thinking about the problems that i might encounter (e.g., tire replacement, saddle angle adjustment, ...) I started to wonder about the mechanics of inner tube replacement when the inevitable un-patchable flat occurs during a ride (at night, in the rain, to make it worse). Replacing the front tube, of course, does not require wheel removal; the rear, of course, does. Given the use of a solid axle and the component that locks into the front wheel when the bike is folded, how difficult is it to remove the rear wheel? tools required? time required?
(Yes, the easy way would be to "Uber" home...)
(Yes, the easy way would be to "Uber" home...)
Last edited by Jonesandrew; 05-12-21 at 04:07 AM.
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Hi mkatz, I think you've ordered the derailleur version, so with the bike upside down, the rear wheel pops out quite easily once the axle is fully withdrawn. Refitting is more of a challenge, it's tricky to align the disc with the brake caliper, hold back the derailleur and locate the hub ends into the drop outs all at once. My suggestion would be to do a couple of practice runs when you get the bike to get familiar with the task. No special tools are required. Time taken is longer than my Cannondale Topstone Carbon 105 which has a quick removal through axle system which allows wheel removal and refitting without complete removal of the axle. There are grooves in the axle which line up with slots in the drop outs which allow this.
Thank you! I was afraid that the Helix rear had something similar to the indexed spring used by the front wheel.
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Yes, like almost all bikes with disc brakes, its possible to mount smaller wheels.
It will of course have some side effects like placing the bottom bracket closer to the ground.
But moving from ETRTO507 to ETRTO406 should be possible (bottom bracket about 5cm lower with the same tire width, less if wider than 40mm ETRT406 tires fit). Moving to ETRTO451 should have less impact but the choice of tires in ETRTO451 is limited.
The problem with Helix is to find/make wheels that fit.
For the rear wheel, I understood its a standard 135mm wide hub with through axle so there are wheels and if not, its easy to build a rear wheel using standard components, hub, spokes, rim.
For the front wheel, its not easy because Helix uses a proprietary front hub, no wheels available excepted from Helix, no hub available excepted from Helix. If Helix doesn't want to sell separate front hub or front wheel, the only solution is to dismount the original front wheel and re-lace it with a smaller diameter rim.
It will of course have some side effects like placing the bottom bracket closer to the ground.
But moving from ETRTO507 to ETRTO406 should be possible (bottom bracket about 5cm lower with the same tire width, less if wider than 40mm ETRT406 tires fit). Moving to ETRTO451 should have less impact but the choice of tires in ETRTO451 is limited.
The problem with Helix is to find/make wheels that fit.
For the rear wheel, I understood its a standard 135mm wide hub with through axle so there are wheels and if not, its easy to build a rear wheel using standard components, hub, spokes, rim.
For the front wheel, its not easy because Helix uses a proprietary front hub, no wheels available excepted from Helix, no hub available excepted from Helix. If Helix doesn't want to sell separate front hub or front wheel, the only solution is to dismount the original front wheel and re-lace it with a smaller diameter rim.
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ah, thanks for replying. 20in on a helix will be a sure buy for me. Opens up to more aftermarket parts. Also loving the mini velo look,
Does it have a proprietary front hub? That will be a big turn off. What if it needs replacing?
Does it have a proprietary front hub? That will be a big turn off. What if it needs replacing?
Last edited by shi01; 05-13-21 at 08:56 AM.
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The front fork of Helix is a proprietary lefty single arm folding fork, as far as I know, it uses a proprietary front hub.
I do not think that a Cannondale Lefty front hub will be usable on Helix ?
I do not think that a Cannondale Lefty front hub will be usable on Helix ?
#2598
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Confirmed, I have a Cannondale Trigger and the lefty hub and axle will not fit my Helix. AFAIK the helix hub is totally unique, I've never seen anything else like it in 50 years of being around bikes.
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