torque arm

[29a]

Hi guys
anyone got any info/advice/links on front torque arm design.
48v/408/35amp/MTB

[Lessss]

When all else failstake it to a highschool metal working shop.

[knoxie]

Front or Rear?

I have made front ones and Team Hybrid stocks them also Kenny does make them as well (you will need a good one) the puma motor will bend 4 sheets of 3mm mild steel at the axle so it needs to be very strong.

Cheers

Knoxie

[29a]

Its the front torque arm and any sort of heavy duty axle retainer im interested in,
anyone got any pics/links/schematics

All i could find was this http://www.users.bigpond.com/solarbbq/t ... ashers.htm
but it doesn't look strong enougth

Knoxie plz post link to team hybrib (or other) torque arms i couldn't find em.

[knightmb]

Yeah, a website to torque arms would be great. I've already gone through about 3 forks on my e-bike. Mainly just because I was experimenting with too much power and bent the steel forks I was using, destroyed one motor that way

I've been tempted to visit a few machine shops here in town to see how much it would cost to fabricate one of these, can't imagine it being too expensive if they make it from steel. Heck Knoxie, you could prefab some of these and sell them in an online store

[Lessss]

Cost me 91.20 CDN to have one made see My XPe Chinese Sailing ship thread.

[knightmb]

Cost me 91.20 CDN to have one made see My XPe Chinese Sailing ship thread.

**Breaks out currency calculator** Yeah, maybe cheap is not the right word then at $77.54.

Seems like I could just take some torque arms they use for children's pedal brakes on bicycles to save some $$$. Hmm, I think I need to make a quick trip to Wal-mart

[knightmb]

Cheap tools to the rescue. Here we go, 1/2 inch wrench, solid steel, can take about 200 lbs (how much torque do you think a high power motor will put on the front?)

Plus, it's easy to strap it to the front frame now and you can even screw back over top of it with a washer behind it for a perfect fit.

It may not be pretty, but if you put one on each side, I bet this will go a long way to keeping your motor from spinning out of the front fork if it has a lot of power going to it?

What do you think?

[TylerDurden]

Lifetime supply of torque arms?

Maybe use Sears Craftsman wrenches... if they crack or round-out, you can get free replacements.

[Rustler]

ElectricRider is selling replacement torque arms for the Phoenix (X-5). Bottom of the page, $14.95

http://www.electricrider.com/crystalyte/parts.htm

[knightmb]

ElectricRider is selling replacement torque arms for the Phoenix (X-5). Bottom of the page, $14.95

http://www.electricrider.com/crystalyte/parts.htm

Awesome, just wish they had a picture of it. Anyone have a picture one they can post up?

[29a]

thanks guys

ElectricRider is selling replacement torque arms for the Phoenix (X-5). Bottom of the page, $14.95

It would be nice if they showed a pic + it doesn't say front or rear, or give axle size.

I really like the wrench idea (TY knightmb)
I was thinking of using the ring side of the wrench as this would allso retain the axle incase of drop out failure and prevent easy theft (if i use torque screws 4 fixing).I see u used the original threaded screw holes, would it weaken the forks too much to drill holes through them 4 fixing wrench along its full length.

[fechter]

If you put the wrench in a vise and heat it red hot with a propane torch, you could bend it so the box end is parallel to the fork. If you look hard, you can find wrenches that are extra thin.

[knightmb]

I really like the wrench idea (TY knightmb)
I was thinking of using the ring side of the wrench as this would allso retain the axle incase of drop out failure and prevent easy theft (if i use torque screws 4 fixing).I see u used the original threaded screw holes, would it weaken the forks too much to drill holes through them 4 fixing wrench along its full length.

I tried ring side, it wouldn't fit around it I have other sizes I can try, but that's a good point. That way the wheel won't going flying off somewhere should something bad happen.

[knightmb]

If you put the wrench in a vise and heat it red hot with a propane torch, you could bend it so the box end is parallel to the fork. If you look hard, you can find wrenches that are extra thin.

You have a lot more wisdom than I, would a wrench that size even be useful in your opinion? I know it's just steel and not very long, but surely the motor would break the frame before it would break the wrench? It's easy to get steel a wrench like that for cheap at the hardware store, maybe a $1.00 USD tops.