Torque arms - where can I buy them?

[piotrmacheta]

I have nearly concluded my ebike project and now have an eZee hub with ecrazyman 48v controller working on my Specialized Epic full sus mountain bike and home-made 43cell NiMH battery pack on Topeak rack in bag - pics soon. Thanks to aaannndddyyy and flecc for all their advice.

I tested it this afternoon and max flat speed is 21mph with very slight pedalling so I'm happy with that.

I am concerned that the Fox aluminium fork drop-outs may become damaged (as reported elswhere) and so wish to get some stainless steel torque arms. Any idea's where I can get them? Alternatively I might be able to get some made but it's quite a difficult shape.
Thanks,
Peter

 

[mapman]

Torque arms

Hi Piotrmacheta

I have seen a post about torque arms on this site, when I find it I will post the info.
I also have a specialized full sus and am looking to put electric kit on it so I am very interested in what you have used especially how you did the battery pack - any info & pictures would be much appreciated.

Thanks
Mapman

 

[piotrmacheta]

I'm particularly pleased with my battery pack. I'll get pics soon. I decided to use a Topeak bag and rack system as the bag clips into the rack and is easily removable for charging and looks very neat and is versatile enough for different battery choices. I went for the RX rack (V type which has a drop down) and RX EX bag because it was the smallest one they make. I worked out that 4/5ths sub C (2000mAhr) batteries fit perfectly in 3 packs of 40 cells (48V) and there was a bit more room for a 3 cell pack to give 43 cells in series (59volts) - it's all really snug and made to measure! This all comes to a total of 6.5kg, just below the rack weight limit of 7kg. It is a bit heavy but for my 6 mile journey to work I could use just 2 packs weighing 4.5kg total. In fact I found that I used 1.7Ahr worth of capacity for the 6 mile ride with minimal pedalling.
I've only tested it once and kept 18 to 21 mph easily.
Peter

 

[flecc]

I had two links for torque arms which appeared in earlier posts, one an ebay one and one a US supplier. Both product links are no longer valid, but if you contact the US company or search their site, I'm quite sure they still sell them:

AmpedBikes.com - High Quality E-bike Conversion Kits
.

 

[daniel.weck]

I like the quality of these (German supplier but ships to European countries):

ElfKW torque arms

 

[mechaniker]

Hi Peter and all the others who are looking for good torque arms.

the best torque arms I know come from www.ebikes.ca Homepage of the revolution this arm are not cheap but professional.

regards
frank

 

[daniel.weck]

DIY wins !

 

[daniel.weck]

Ouch !

 

[daniel.weck]

universal torque arm for electric bikes

"Based on design from The Renaissance Bicycle Company, www.ebikes.ca Homepage of the revolution (direct link to SHOP) "

 

[Sir_Bob]

oudie

Thats a good advice. Can anybody fit this stuff. I have an old postman bike in my shed could i add kit to this.

thx

Bob