broken cable help

billyboya

Esteemed Pedelecer
Aug 10, 2016
1,137
90
73
uk
How many links is your Erider 15 supposed to have had originally billyboya? I've been googling for that info, but no joy. I did find a manual for another Erider model, which says there should be a small amount of slack in the chain (page 22), which may or may not be relevant for your bike. Might be worth asking Erider how long the chain is supposed to be, for your model 15?

https://eriderbikes.com/wp-content/uploads/2020/10/V7-Manual.pdf

Adjustment of chain
Loosen the rear axle nut first to adjust the slack of the chain. While adjusting the chain, the front and rear chain wheel must be aligned in a straight line. After adjustment, fix the rear axle nut. Lock the adjusting nut for final inspection to make the loosening distance between the centers of two chain wheels is 10 ~ 15mm.

see diagram
Hi guerney thanks for info, but it don’t mention chain on page 22. I may not need to add more links to chain yet if these torque washers from eBay are ok as like I said to Nealh the ones from ERider are too long that’s why chain is taught as you can’t move wheel back in drop outs
 

guerney

Esteemed Pedelecer
Sep 7, 2021
11,424
3,247
Hi guerney thanks for info, but it don’t mention chain on page 22. I may not need to add more links to chain yet if these torque washers from eBay are ok as like I said to Nealh the ones from ERider are too long that’s why chain is taught as you can’t move wheel back in drop outs
Sorry about that, it's on page 40 - I use the search function on Sumatra PDF on PC and search for words such as "Chain" etc. in manuals. The PDF viewer counts pages differently to those numbered.
 

sjpt

Esteemed Pedelecer
Jun 8, 2018
3,835
2,759
Winchester
@billyboya I'm glad you got it working for spring, well done and enjoy.
And reflecting several other comments, well done the people who helped so much, especially Nealh.
 
  • Agree
Reactions: guerney

billyboya

Esteemed Pedelecer
Aug 10, 2016
1,137
90
73
uk
@billyboya I'm glad you got it working for spring, well done and enjoy.
And reflecting several other comments, well done the people who helped so much, especially Nealh.
Well Like I said earlier, it was 3 months being fixed, took it along a short stretch of road dam axle had twisted a bit so broke cable to motor, also fried 2 sensors on the motor pcb, I did buy 3 more new sensors, but messed up the pcb so had to buy another from china which took 5 weeks, which was a pack of 5 pcbs for just £13.87 but i saw same one on ebay for £22 that's just 1 what a rip off I thought.

I'm just sorting out the torque washers now as instructed by the brilliant Nealh, without his help I wont have had this electric moped working, also with Matthewslack help too.
 

billyboya

Esteemed Pedelecer
Aug 10, 2016
1,137
90
73
uk
Sorry about that, it's on page 40 - I use the search function on Sumatra PDF on PC and search for words such as "Chain" etc. in manuals. The PDF viewer counts pages differently to those numbered.
Oh so you used Sumatra pdf viewer, its ok I will check again. I'm still waiting for these torque washers to arrive from eBay. But feel they wont fit a 14mm axle. I have asked the seller but he didn't seem to know, and the ones Erider provided, which I don't think they are for my model 15, as too long that's why I cant make chain looser as the torque washers are too long, But will see if these from eBay will fit, if not I will have to saw some off the ends of these from Erider.

 

Nealh

Esteemed Pedelecer
Aug 7, 2014
20,917
8,533
61
West Sx RH
Please can we not confuse matters by describing torque arms as torque washers.
If the erider ones are too long grind a bit off the end so they fit, the generic curved bike ones aren't as good as they have a weak point which is the bolted join. A one piece TA is always stronger and better then a two piece item as there is no chance of the arm moving.
 

billyboya

Esteemed Pedelecer
Aug 10, 2016
1,137
90
73
uk
Please can we not confuse matters by describing torque arms as torque washers.
If the erider ones are too long grind a bit off the end so they fit, the generic curved bike ones aren't as good as they have a weak point which is the bolted join. A one piece TA is always stronger and better then a two piece item as there is no chance of the arm moving.
Ok I get confused, ok torque arms, But I have just now received the 1 from ebay, I thought it was a pair for each sides of axle but its just 1 side. but I have taken a image of how it fits. with the arm and jubilee clip. its much better plus chain is not now tight.




But I don't know what's best as if I turn this part on its own opp way round it nearly lines up with that hole marked in yellow, which are for the bike stand which I don't use anyway, but I could drill through that hole so it does line up. would that be much better or use the whole part with jubilee clip.



this is what Erider sent me, but the top torque arm is the original one, and Erider sent 2 of those bottom ones, which I could grind down. But I just thought to save all of doing that use the ones from ebay





this is the part marked in yellow where the other torque arms catch and make chain too tight

 
Last edited:

Nealh

Esteemed Pedelecer
Aug 7, 2014
20,917
8,533
61
West Sx RH
The jubilee clip is useless as a restraint against torque force, it will at some stage fail.
100% reverse the main shaped axle fitting and use it by aligning the fixing hole and bolt it direct. You will still need to use the old original one on the other side.

Once fitted there is no need to use those anti rotation washers with tab on them.
The idea of torque arms is a belt and braces firm fixing that simply sit tight against the drop out, a one piece item is twice as good as a two piece item that could move. A direct bolt fixing is essential.
 
Last edited:

billyboya

Esteemed Pedelecer
Aug 10, 2016
1,137
90
73
uk
The jubilee clip is useless as a restraint against torque force, it will at some stage fail.
100% reverse the main shaped axle fitting and use it by aligning the fixing hole and bolt it direct. You will still need to use the old original one on the other side.

Once fitted there is no need to use those anti rotation washers with tab on them.
The idea of torque arms is a belt and braces firm fixing that simply sit tight against the drop out, a one piece item is twice as good as a two piece item that could move. A direct bolt fixing is essential.
Nealh I really appreciate your advice on those jubilee clip torque arms, Glad you mentioned they will be useless, But I have now managed to cut a piece off of each torque arms which Erider sent and grinded them shorter so hopefully I can now fix bolts where they should go, and make sure chain is now as it should be.

so what about those big washers I have 1 on insides of drop outs , then on outside a torque arm which obviously I am placing a bolt through hole to secure them, then another big washer, then the nut then will also seal over threads with that Loctite 243 glue will that be ok now

 

Nealh

Esteemed Pedelecer
Aug 7, 2014
20,917
8,533
61
West Sx RH
The washers have tow uses if needed. On the inside as a spacer between the hub and inside face of the drop out, usually to prevent one causing friction/ rubbing against the other. Often the outer washer will have serrations on the face so the nut can't simply loosen via vibrations.
 

billyboya

Esteemed Pedelecer
Aug 10, 2016
1,137
90
73
uk
The washers have tow uses if needed. On the inside as a spacer between the hub and inside face of the drop out, usually to prevent one causing friction/ rubbing against the other. Often the outer washer will have serrations on the face so the nut can't simply loosen via vibrations.

Whats tow uses if needed mean. so am I ok now to go what I have on the axles.
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
20,917
8,533
61
West Sx RH
My pc seems to use auto correct and often what I type comes out very different.
Tow should read two.
 

billyboya

Esteemed Pedelecer
Aug 10, 2016
1,137
90
73
uk
My pc seems to use auto correct and often what I type comes out very different.
Tow should read two.
Its ok makes sense now yeah I know what you mean. Well I have gone back to the original method I said about in #127 the 1st image showing yellow circles on image. I am just going to use the piece below I have drilled a hole so it lines up ok. I just couldn't get those by Erider to fit right, they wasn't for this model anyway. I've just ordered another 1 for opp side. as I thought they came in a pair but obviously what I ordered was just 1.



so then after I have secured those each side with bolts. its just a matter of fitting a few more parts back like seat etc dash. wing mirrors. then Im all good to go I think these torque arm parts will be much better just using the part above only
 

Nealh

Esteemed Pedelecer
Aug 7, 2014
20,917
8,533
61
West Sx RH
What was wrong with using the Black one in #127 ?
Was it because the chain was too tight ?
 

billyboya

Esteemed Pedelecer
Aug 10, 2016
1,137
90
73
uk
What was wrong with using the Black one in #127 ?
Was it because the chain was too tight ?

Well somehow I had lost the original black one, And Erider sent me this one, but again that must have been for a smaller axle width as it didn't fit my 14mm axle. I think they just had a few old torque arms but not for my model

This is what I have done to 1 side just got to fit a bolt in that hole marked with blue line then do same other side but got to wait now for other one to arrive as I thought it was a pair I ordered but it was just 1

 
Last edited:

billyboya

Esteemed Pedelecer
Aug 10, 2016
1,137
90
73
uk
At last again moped is all done, Its been 4 months. well it was 3 months, really, but after a short ride cable snapped, that was because I didn't have correct washers and 2 torque arms. plus it had fried 2 hall sensors. plus the pcb was messed up too, so had to order more which took 5 weeks to arrive. but all I have to do now is fit back box, fit 2 handle bar grips. and will do a test on Sunday on a short road a few times back and forwards. then if all fine well back on long trips

Nealh just a quick ? whats a 48V battery on full charge now is it 53v or 54v



 

matthewslack

Esteemed Pedelecer
Nov 26, 2021
1,862
1,346
At last again moped is all done, Its been 4 months. well it was 3 months, really, but after a short ride cable snapped, that was because I didn't have correct washers and 2 torque arms. plus it had fried 2 hall sensors. plus the pcb was messed up too, so had to order more which took 5 weeks to arrive. but all I have to do now is fit back box, fit 2 handle bar grips. and will do a test on Sunday on a short road a few times back and forwards. then if all fine well back on long trips

Nealh just a quick ? whats a 48V battery on full charge now is it 53v or 54v



WELL DONE THAT MAN!!

13 x 4.2 = 54.6V.
 
  • Like
Reactions: guerney

egroover

Esteemed Pedelecer
Aug 12, 2016
1,038
622
57
UK
Well Done !
A bit of rust inhibitor and some Hammerite satin black on the rusty bits and you're done. Now get out and ride !
God Like Genius Award goes to Nealh on this one
 

billyboya

Esteemed Pedelecer
Aug 10, 2016
1,137
90
73
uk
Well Done !
A bit of rust inhibitor and some Hammerite satin black on the rusty bits and you're done. Now get out and ride !
God Like Genius Award goes to Nealh on this one
Yes didn't think about that will do that another time, but thanks for advice. fingers crossed for Sunday testing day