Converting to Ebike- Drum brake upgrade?
12-31-21, 08:51 AM
#1
Pain in the backside
Thread Starter
Join Date: Dec 2021
Location: Newport, South wales, UK
Posts: 1
Bikes: Giant 1000w Ebike self conversion, A collection of pashley prontos
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Converting to Ebike- Drum brake upgrade?
Hi all,
1st post, so be kind.
I have a Pashley pronto, In fair condition. I am going to convert it to an E-bike.
I have converted mountain bikes to Ebikes in the past, so I have experience with the electronics and all the bits and pieces to go with it.
BUT-
Being the first Pashley I have got that's in reasonable nick, It has 70mm drum brakes on it.
I intend on upgrading the front to dynamo hubs for a commuter bike, Should I go 90mm drums all around? or will 70mm suffice?
I want to install a bafang crank driven motor on it, Mounting the battery on the rear pannier. I know from past experience brake upgrades are a must.
My daily in work is a Pronto (Orange, ex whistl), Rides like a dream, with 70mm drums, stops on the button, as a Pashley should.
This one? The brakes are a little vague, They do stop, but not as sharp. Should I bite the bullet and 90mm upgrade them?
1st post, so be kind.
I have a Pashley pronto, In fair condition. I am going to convert it to an E-bike.
I have converted mountain bikes to Ebikes in the past, so I have experience with the electronics and all the bits and pieces to go with it.
BUT-
Being the first Pashley I have got that's in reasonable nick, It has 70mm drum brakes on it.
I intend on upgrading the front to dynamo hubs for a commuter bike, Should I go 90mm drums all around? or will 70mm suffice?
I want to install a bafang crank driven motor on it, Mounting the battery on the rear pannier. I know from past experience brake upgrades are a must.
My daily in work is a Pronto (Orange, ex whistl), Rides like a dream, with 70mm drums, stops on the button, as a Pashley should.
This one? The brakes are a little vague, They do stop, but not as sharp. Should I bite the bullet and 90mm upgrade them?
12-31-21, 03:49 PM
#3
Senior Member
Join Date: Apr 2010
Location: Elevation 666m Edmonton Canada
Posts: 2,482
Bikes: 2013 Custom SA5w / Rohloff Tourster
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 1237 Post(s)
Liked 321 Times
in
248 Posts
For sure go 90 mm if you are changing to a dyno anyway. That fork is plenty stong.
Mine has 28,000 miles in 9 years, including 2 tours with the GVW at 290+ lbs. I just built a second front wheel the same and put the old one on a new Simcoe roadster.
I also have a SA X-RD3, that just isn't the same stopping as my SA XL-RD5w. The 3 is still great on the highway, very easy going.
Mine has 28,000 miles in 9 years, including 2 tours with the GVW at 290+ lbs. I just built a second front wheel the same and put the old one on a new Simcoe roadster.
I also have a SA X-RD3, that just isn't the same stopping as my SA XL-RD5w. The 3 is still great on the highway, very easy going.
12-31-21, 04:04 PM
#4
Senior Member
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Posts: 27,547
Mentioned: 217 Post(s)
Tagged: 0 Thread(s)
Quoted: 18376 Post(s)
Liked 4,511 Times
in
3,353 Posts
I'd go by whatever you can find. Sturmey Archer makes a drum brake dynamo, I think. Maybe others too.
If you aren't changing the rear wheel, I'd probably leave it alone.
If you aren't changing the rear wheel, I'd probably leave it alone.
