are my dropout too big?

[maggy.apo]

Hi
In the last month I was using a lot of good information from this site
Because that I choose to buy a Ciclotricity Ekit 250W front hub with 36V/7ah
I was fitting this in a bike a got, a clifton real bike, aluminiun frame
while I was waiting for my kit to arrive (it took a month) I was using the bike for commuting, super happy with my sturdy cheap bike
So finally my kit arrived last week, I installed with my husband and everything went suuper good, no filled dropout, everything fit smooth and easy, I took the bike for a small ride, try the throttle and all good
later that day I decided to go for a proper ride so in my way I took a proper main road and in a traffic light my wheel just snap, leaving my fork, nothing bad happened to me, just a bruise on my knee
I figured out that torque arm was necessary
I took my bike to a LBS for a new fork
I asked for a steel fork and this is what i got
first, not sure if its steel
second, the guy of this place guarantee I dont need a torque arm with this fit, I took my bike with the new fork in a ride home of 9 miles in a big main road but I was a bit paranoid to use the motor, finally at home i took the nutz off to have a look and i found this


is this fixable with a C washer and torque arms?
doesnt suppose this must fit all like a shoe in the correct place? the dropout at perfect size fit with the axle of the wheel
of course i am taking the bike back to the LBS but I dont trust this guy anymore....
Please, help

 

[vfr400]

You might be able to fix it by replacing the tab washer with a torque arm, which would be possible as long as the hole of the tab washer sits proud of the motor. In the photo, it looks like it is sunk in..

I think the reason that happened is that you have a slight dimple in your drop-outs, so the nut wasn't tightened against solid metal and came loose. Correctly fitting nuts and washers is essential. You're basically relying on the friction of the but to resist the motor's torque.

 

[Nealh]

The hub motor axle should be a snug tight fit in the drop out and certainly not anything like the d/o in that pic, that d/o is knackered and looks like the one end of the jaw has broken off or it is made of cheese.

 

[maggy.apo]

so maybe align the torque washer to the right side of the dropout and fit a torque arm will be enough? the bike feel safe if I dont use the motor but I am only 65kg
I hope "this guy" change for a different fork
if i change to a aluminium fork again, 2 torque arms (for piece of mind) will be enough with this motor?

 

[vfr400]

The torque arm will only work if you can get it onto the axle flats. If you can't get it on that side, it might fit on the other.

 

[Nealh]

A decent steel fork for front hub will be better then nearly all ali forks, the only ali fork good enough I have found for a front hub is the Suntour XC range. The one I had on my 700c with powerful Bafang BPM had about 8mm thick meaty d/o's with triangulated gusset as part of the design, I was able to make a one pieces TA's for both side and tapped a M5 fixing in to the tri gusset.

 

[maggy.apo]

both dropouts look the same, I think I will try to go back either to a new alu or steel fork, this work dont look good

 

[Nealh]

both dropouts look the same, I think I will try to go back either to a new alu or steel fork, this work dont look good

The fitting is aweful unless damage has been caused by the axle.
I tried the BPM in Rockshok forks with AR washers and TA's they still cracked and broke, they were just not substantial enough to resist the fatigue.

The Suntour fork I used for a front hub were these in the link below.
They are a bit heavy, meaty and sturdy but quite cheap.
You can see the small triangulated gusset to the front of the fork above the d/o, it is of a good size to make a pair of one piece bespoke TA's and to fit them to. I made a pair of 2.5 - 3mm TA's out steel plate up, firstly I drilled /filed the hole shape so that a snug fit over the axle was achieved then I shaped the metal to fit the flat in the tri/gusset area. Once that was achieved I drilled a hole through the TA in to the gusset and used a tap for M5 to thread the hole all the way through.

700c 28" SUNTOUR NEX SUSPENSION FORK 1 1/8” 300mm I.S DISC MOUNT BRAKE GREY | eBay

Find many great new & used options and get the best deals for 700c 28" SUNTOUR NEX SUSPENSION FORK 1 1/8” 300mm I.S DISC MOUNT BRAKE GREY at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

 

[maggy.apo]

that look pretty good! thanks for the advice, it look like I will have a aluminium fork back
I ordered torque arms from ciclotricity I tried so much to them to tell me the size but looks like they just want to sell me
is 48£ a bit much for 2 torque arms right? I will love to know the size do I need for this to see if I can get cheaper and quicker, maybe 12mm?

 

[vfr400]

You should use 10 x 12mm torque arms, not 10 x 14mm. Average price is about £12, but if you buy them on their own, postage can be dear. Quality is very variable, so be careful. Try these, which are laser cut from high tensile steel. Avoid cheap stamped ones.

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48V 24AH ~34AH /1152WH ~1632WH fuel tank battery for ebike /e-motorcycle;

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[Raboa]

Hi, that seems a bit expensive to me, you can pick up a pair for cheaper.

Torque Arm for e-bike EXTRA Heavy-Duty 5mm Stainless Steel,14x10mm,electric bike | eBay

Find many great new & used options and get the best deals for Torque Arm for e-bike EXTRA Heavy-Duty 5mm Stainless Steel,14x10mm,electric bike at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

If you live near a hardware store see if you can pick up a 12mm (M12) and 14mm (M14) nut, try each one and this will tell you what size you need. Another option is to phone them up and say you have lost one if your hub axle nuts after taking the wheel off and ask them if you need a 12mm or 14mn nut to replace it. I could send you a 12mm nut, probably cheaper to go to a store, up to you.

 

[vfr400]

Hi, that seems a bit expensive to me, you can pick up a pair for cheaper.

Torque Arm for e-bike EXTRA Heavy-Duty 5mm Stainless Steel,14x10mm,electric bike | eBay

Find many great new & used options and get the best deals for Torque Arm for e-bike EXTRA Heavy-Duty 5mm Stainless Steel,14x10mm,electric bike at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

If you live near a hardware store see if you can pick up a 12mm (M12) and 14mm (M14) nut, try each one and this will tell you what size you need. Another option is to phone them up and say you have lost one if your hub axle nuts after taking the wheel off and ask them if you need a 12mm or 14mn nut to replace it. I could send you a 12mm nut, probably cheaper to go to a store, up to you.

Wrong size. His axle is shown in OP.

 

[Raboa]

My mistake, I dont know if these would be any good.

Arc Torque Arm

The most popular e-bike torque arm in the world! Completely unique by design, engineered to work like no other and built to last a lifetime. Suitable for hub drive conversion kits, this torque arm protects your dropouts by securing in your motor wheel with added rigidity and mechanical...

dillengerelectricbikes.co.uk

 

[Nealh]

It is a 12 x 10 axle.

 

[maggy.apo]

well looks like there is not a huge difference buying from them or a separate seller
I imagine the ones from ciclotricity will be good quality, right?
oh man I just want all this jazz done and get the bike proper to ride safe and have the fun!
thank you guys

 

[maggy.apo]

why I cant find anywhere online cyclezee torque arms to buy? everybody speaks so many good things of them, or doctor bass

 

[Benjahmin]

I have Suntour NVX forks with an Ezee motor fitted. I have theses fitted with no problems.
Cyclezee no longer trades, but these seem to be the same pattern

Torque Arm for e-bike Heavy-Duty 3 or 5mm Stainless Steel,14x10mm, Electric Bike | eBay

Manufactured in the UK from 3mm or 5mm thick stainless steel.

www.ebay.co.uk

 

[vfr400]

My mistake, I dont know if these would be any good.

Arc Torque Arm

The most popular e-bike torque arm in the world! Completely unique by design, engineered to work like no other and built to last a lifetime. Suitable for hub drive conversion kits, this torque arm protects your dropouts by securing in your motor wheel with added rigidity and mechanical...

dillengerelectricbikes.co.uk

Wrong size!
Please only recommend stuff when you know about it, otherwise OP might get confused or waste their money, or, worse still, ruin their motor and forks.

 

[maggy.apo]

I cant find that ebay one in the correct size I need (12x10mm)
Maybe they do just the big ones?

 

[vfr400]

I cant find that ebay one in the correct size I need (12x10mm)
Maybe they do just the big ones?

There are loads on EBay, but they're nearly all the cheap stamped ones. I wouldn't trust those.