Rim brakes and high speeds (on folding bikes)
08-10-15, 06:47 AM
#51
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I've had two blow outs on 20" (406) tires coming down long mountain descents. It's not fun 'cause you're going pretty fast on downhills. On one blowout coming down a 2,000 ft descent with a recumbent bike, the front tire blew, dragged on the ground, rear end came over the top and I was thrown over the handlebars. Good thing I had the presence of mind to tuck and roll. I was going about 22mph and didn't get any injuries even though the bike landed on top of me.
I'm only riding down big hills with disc brakes now. Lesson learned....
I'm only riding down big hills with disc brakes now. Lesson learned....
Yan
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Designer of Downtube Folding Bike
Ph.D. Temple University ( Math )
Biked across the USA twice
Semi-active chess player ( two time Bahamas National Champion )
Sivananda ( Bahamas ) Trained Yoga instructor ( 2013 ) and ThetaHealer since 2013
Bicycle delivery worker for Jimmy John's. Delivering is the best workout I have ever had.
08-10-15, 08:21 AM
#52
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I've had two blow outs on 20" (406) tires coming down long mountain descents. It's not fun 'cause you're going pretty fast on downhills. On one blowout coming down a 2,000 ft descent with a recumbent bike, the front tire blew, dragged on the ground, rear end came over the top and I was thrown over the handlebars. Good thing I had the presence of mind to tuck and roll. I was going about 22mph and didn't get any injuries even though the bike landed on top of me.
I'm only riding down big hills with disc brakes now. Lesson learned....
I'm only riding down big hills with disc brakes now. Lesson learned....
As for the rim brakes, if Tektro is good, then I'll try to fix them after reading the above linked learning resources.
08-10-15, 09:08 AM
#53
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I currently have a 500W 48V e-hub on a folder that Yan would recognize:
I can go up to 23 mph with this setup. No braking issues on city roads.
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Last edited by SesameCrunch; 08-10-15 at 09:18 AM.
08-10-15, 10:24 AM
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For what it's worth, the arms shouldn't be so far apart .. first place I'd start is getting the tops of the arms closer together by taking shims out from behind the pads .. note the angle that the pads address the rim... the pads should be pushing straight in on the rim as much as possible.. yours are pointing up.. I'd also look to see what the pad wear looks like..
08-10-15, 10:38 AM
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Two additional photos that show the pads:
The pads wear is fine, btw. The grooves are still rather deep.
The pads wear is fine, btw. The grooves are still rather deep.
08-10-15, 11:02 AM
#57
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Yeah, but my commentary is about coming down long descents. I don't think you'll be taking your ebike up 2-3K ft. climbs. For general, around town riding, I'm sure you're good with V-brakes.
I currently have a 500W 48V e-hub on a folder that Yan would recognize:
I can go up to 23 mph with this setup. No braking issues on city roads.
I currently have a 500W 48V e-hub on a folder that Yan would recognize:
I can go up to 23 mph with this setup. No braking issues on city roads.
I think I'll stick to the Tektros and try to fix them. They felt pretty good when the bike was new.
08-10-15, 11:07 AM
#58
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+1, replace the Pads , Kool Stop or Swiss Stop are better compound than the generic ones that you show.
You should not have been riding faster than you can see by your lights at night,
dont ride faster than your stopping distance either..
A brake booster arch may also improve the front brake function. such as :
https://www.nashbar.com/images/nashba...BBA-BK-TOP.JPG
More:
https://www.google.com/search?q=brak...C9j4qdCoWuE%3D
You should not have been riding faster than you can see by your lights at night,
dont ride faster than your stopping distance either..
A brake booster arch may also improve the front brake function. such as :
https://www.nashbar.com/images/nashba...BBA-BK-TOP.JPG
More:
https://www.google.com/search?q=brak...C9j4qdCoWuE%3D
Last edited by fietsbob; 08-10-15 at 11:19 AM.
08-10-15, 01:30 PM
#60
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08-10-15, 01:36 PM
#61
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Appears So , they have to have a pad of some sort, to ship the part to be ready to fit, so they low ball cost..
Tektro is Huge , supplies hundreds of brands in OEM factories numbering in the dozens.
Tektro is Huge , supplies hundreds of brands in OEM factories numbering in the dozens.
08-10-15, 01:48 PM
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I see... Well guess I'll be getting new pads after all. I can't find the electric ones by kool stop, though. Not for a good price anyway. So it's either black, salmon, or dual compound. I only ride in dry conditions. In this case I should get the black, right?
08-10-15, 01:53 PM
#64
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black is a general condition , salmon is for wet all weather, IDK if they have a speeding electric powered bike pad at all
the company has an eMail address to ask directly, your self.
the company has an eMail address to ask directly, your self.
08-10-15, 02:00 PM
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08-10-15, 02:08 PM
#67
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Kool Stop International - High Performance Bicycle Brake Pads Since 1977 & Kool Stop International - High Performance Bicycle Brake Pads Since 1977
& NB:
they say "Electric- Our E-Electric compound is formulated specifically for the higher speeds and weights of electric bicycles."
Now you have to find a vendor that stocks them ..
& NB:
they say "Electric- Our E-Electric compound is formulated specifically for the higher speeds and weights of electric bicycles."
Now you have to find a vendor that stocks them ..
08-10-15, 02:12 PM
#68
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I have sent the local shop an email. They're not too local, so I'm not gonna drive there just to see what's in stock. I don't know what brands are good anyway, in case they don't have Kool Stop.
08-11-15, 12:13 AM
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Kool Stop International - High Performance Bicycle Brake Pads Since 1977 & Kool Stop International - High Performance Bicycle Brake Pads Since 1977
& NB:
they say "Electric- Our E-Electric compound is formulated specifically for the higher speeds and weights of electric bicycles."
Now you have to find a vendor that stocks them ..
& NB:
they say "Electric- Our E-Electric compound is formulated specifically for the higher speeds and weights of electric bicycles."
Now you have to find a vendor that stocks them ..
10-02-15, 07:57 AM
#70
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Hello again,
It's been a while. Summer was very hot so I didn't even touch the bike, but the weather is decent now. I wanna buy these pads but the description says they're for mountain bike. Does it matter?
Kool Stop Dual Compound Brake Pads for Mountain Bikes | eBay
By the way, does it make sense to replace the front brake pads only, or should I replace the rear one's as well?
It's been a while. Summer was very hot so I didn't even touch the bike, but the weather is decent now. I wanna buy these pads but the description says they're for mountain bike. Does it matter?
Kool Stop Dual Compound Brake Pads for Mountain Bikes | eBay
By the way, does it make sense to replace the front brake pads only, or should I replace the rear one's as well?
Last edited by YonathanZ; 10-02-15 at 10:44 AM. Reason: typo
10-02-15, 01:07 PM
#71
Banned
Long tail brake shoes that extend back in-between the fork blades make wheel removal more difficult unless you let the Air Out of the tire.
Then the Cross Brake shoes get used , a MTB type mounting , but shorter like Road brake shoes.
Then the Cross Brake shoes get used , a MTB type mounting , but shorter like Road brake shoes.
10-02-15, 02:30 PM
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I never had punctures riding on the roads. Had 3 off-road (in succession, no less), but I'm done with that.
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