this is really a big problem. The electric motor touches the brake. Please advise.

joelectric

Pedelecer
Feb 22, 2019
85
52
Motherwell
this will work just not with the caliper you have becose of the bolt spacing.


problem is i can not find it for sale cheap in any bike shop in stock and only on ebay at near £30 and is the only way to fix this problem.

cable caliper also seem to be a lot wider than hydraulic ones but again modern ones wont match the bolt spacing on the frame so you will need that frame adaptor one way or another.

or take a Dremel to the caliper you have to make the space and grind it down to fit if you only need a few more mm.
This looks the same one here ?(soundwave?) for £8.99 and only £3 shipping
 

soundwave

Esteemed Pedelecer
May 23, 2015
11,202
4,644
the bolt spacing is not the same as it wont fit to the frame he has only the tektro one will work as 40mm vs normal 74mm spacing to fixit to the frame.
 

dzhem

Pedelecer
May 13, 2021
39
3
this will work just not with the caliper you have becose of the bolt spacing.


problem is i can not find it for sale cheap in any bike shop in stock and only on ebay at near £30 and is the only way to fix this problem.

cable caliper also seem to be a lot wider than hydraulic ones but again modern ones wont match the bolt spacing on the frame so you will need that frame adaptor one way or another.

or take a Dremel to the caliper you have to make the space and grind it down to fit if you only need a few more mm.
As you said, we solved the problem with dremel, but I still think it makes sense to buy this adapter. And I'll have to buy an adapter that fits that width, right?
 

soundwave

Esteemed Pedelecer
May 23, 2015
11,202
4,644
yes the adaptor must match the spacing on the frame problem is as that is a very old standard most modern calipers have a bolt spacing of 74mm. so the one you have wont fit on top of it.

a lbs might be able to order it in cheaper direct from tektro if your not in any rush.
 
  • Like
Reactions: dzhem

dzhem

Pedelecer
May 13, 2021
39
3
yes the adaptor must match the spacing on the frame problem is as that is a very old standard most modern calipers have a bolt spacing of 74mm. so the one you have wont fit on top of it.

a lbs might be able to order it in cheaper direct from tektro if your not in any rush.
understood. thank you again. Yes, I'm in no hurry. I will check tektro's website from time to time to see if it's in stock. so how do you know this adapter is compatible with 40mm gap? How can I know this? Where can I find these codes if they have any meaning?
 

soundwave

Esteemed Pedelecer
May 23, 2015
11,202
4,644
well if that does not fit then i do not know what does as i can nothing else with bolt spacing smaller than 74mm.

the codes dont mean anything bar a product number that a shop can order as most bike part manufactures wont sell to the public so need a lbs to order them in for you but postage is a rip off atm if it has to come from Europe.
 
  • Like
Reactions: dzhem

dzhem

Pedelecer
May 13, 2021
39
3
well if that does not fit then i do not know what does as i can nothing else with bolt spacing smaller than 74mm.

the codes dont mean anything bar a product number that a shop can order as most bike part manufactures wont sell to the public so need a lbs to order them in for you but postage is a rip off atm if it has to come from Europe.
so this is not the same as what you suggested on ebay, is it?
 

Attachments

soundwave

Esteemed Pedelecer
May 23, 2015
11,202
4,644
so this is not the same as what you suggested on ebay, is it?
yes that is the one if it is in stock and as you can see the bolt spacing for it to attach to the frame is much closer to what you have.
 
  • Like
Reactions: dzhem

dzhem

Pedelecer
May 13, 2021
39
3
yes that is the one if it is in stock and as you can see the bolt spacing for it to attach to the frame is much closer to what you have.
yes it is in stock now. I live in Dublin. I hope they send it to me. Thanks a lot for your help. The first bike mechanic I went to broke one of the caliper screws while trying to fix it. the other bike mechanic somehow fixed it and created a gap with the dremel but I don't think it's very sturdy so it would make sense for me to buy this adapter and a new caliper-rotor.
 
  • Agree
Reactions: soundwave

soundwave

Esteemed Pedelecer
May 23, 2015
11,202
4,644

when i broke that i rang every bike shop and no one would touch it as at the time that wheel cost 500 quid but did not have the tools to remove it but found one that would take a look at it.

hammer comes straight out and started to try smash the axle out the wrong way and had to step in and basically use there tools and help to lever the fkn thing off the axle as the bearings was a gray mush and took a fkn hour.

i had a new one and was on in 5 mins ;) never been to a lbs since pay peanuts get monkeys
 
  • Like
Reactions: dzhem

dzhem

Pedelecer
May 13, 2021
39
3

when i broke that i rang every bike shop and no one would touch it as at the time that wheel cost 500 quid but did not have the tools to remove it but found one that would take a look at it.

hammer comes straight out and started to try smash the axle out the wrong way and had to step in and basically use there tools and help to lever the fkn thing off the axle as the bearings was a gray mush and took a fkn hour.

i had a new one and was on in 5 mins ;) never been to a lbs since pay peanuts get monkeys
Although I can't fully understand you because my English is bad, it's true that these things are a bottomless pit. We don't know who we can trust and who we can't. I am an immigrant living in Ireland. maybe that's why it's hard to find something by trial and error and constantly spend money like you. But if I want it, I have to. It is really enjoyable to benefit from your experience and learn something. I hope I don't experience the treatment that the first bike mechanic I went to treated me and another fraud story that I can't tell here. :D

In the meantime, was it a mistake to think that buying a giant brand bike would help me a bit, be of better quality and meet the standards? I can't understand why I'm having trouble. I just wanted to have a good electric bike.
 
  • :D
Reactions: soundwave

vfr400

Esteemed Pedelecer
Jun 12, 2011
9,012
3,576
Basildon
Although I can't fully understand you because my English is bad, it's true that these things are a bottomless pit. We don't know who we can trust and who we can't. I am an immigrant living in Ireland. maybe that's why it's hard to find something by trial and error and constantly spend money like you. But if I want it, I have to. It is really enjoyable to benefit from your experience and learn something. I hope I don't experience the treatment that the first bike mechanic I went to treated me and another fraud story that I can't tell here. :D

In the meantime, was it a mistake to think that buying a giant brand bike would help me a bit, be of better quality and meet the standards? I can't understand why I'm having trouble. I just wanted to have a good electric bike.
You're making the problem much bigger than it is. A 160mm disc will have it's outer edge 10mm further out, so you need to lift the caliper about 12mm from it's present position. The simplest and cheapest solution is to buy a packed of M6 washers and put a load of them between the caliper and the frame until the caliper is in the right position. M6 washers are normally 1.6mm thick, so you'll need 7 or 8 on each bolt. A packet of 20 should sort it.


Obviously, you'll need longer bolts to suit. If you want them quick, you can get the washers and bolts from your local Screwfix or whatever equivalent you have where you live.
 
Last edited:

Related Articles

Advertisers