Search found 453 matches

by RTLSHIP
May 06 2021 2:49pm
Forum: EBike Troubleshooting
Topic: My hubmotor studders when starting.
Replies: 3
Views: 106

Re: My hubmotor studders when starting.

I get stutters on my bike but when hitting top speed. It feels like the controller can not keep up with what the motor/throttle is demanding. But it only happens at that top extreme. Check for any frayed wires/contacts as Chalo implies. Made in China or USA is not necessarily the issue. I get the sa...
by RTLSHIP
May 06 2021 5:28am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

In reality, buying a decent $1000 . integrated bike will eliminate these problems. Are you talking about an ebike? Yes, I want to get a rear wheel drive about 1000W. Decent could be more than $1000. I'm assuming an integrated bike has an integrated torque system. and want to go rear wheel. I want s...
by RTLSHIP
May 06 2021 5:26am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

In reality, buying a decent $1000 . integrated bike will eliminate these problems. Are you talking about an ebike? Yes, I want to get a rear wheel drive about 1000W. I'm assuming an integrated bike as an integrated torque system. I want something that will be compatible with my current battery pack...
by RTLSHIP
May 05 2021 11:21am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

The forks are strong. They are Chromoly. The tips are solid 5 mm or 1/4" as you can see. No squashed tips. Well, either they're smashed into shape from the tube ends (like an old Huffy), or they're styled to look as if they were. I have never seen a chromoly fork with that treatment, but in pr...
by RTLSHIP
May 05 2021 6:49am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

In reality, buying a decent $1000. integrated bike will eliminate these problems. I attend to do this one day, but at this point I want to use the materials I have. I will eventually not fool with conversion kits.
by RTLSHIP
May 05 2021 4:18am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

Here are a few more pics. Dude. Those forks are janky AF. Would you use them as a wrench? No you would not. That makes them unsuitable for restraining axle torque. In the USA, squashed-tube fork tips like that are common only on department store bikes from the 20th century. Is that what you're usin...
by RTLSHIP
May 04 2021 5:28pm
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

Regen makes practically no sense anyways as it makes tiny trickle charges. I can't believe someone is still posting these kinds of anti-regen falsehoods in 2021. -Regen adds range, it's like getting 5% or more of free battery. -Reduces maintenance time and cost (I haven't changed a brake pad or fid...
by RTLSHIP
May 04 2021 5:26pm
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

Regen makes practically no sense anyways as it makes tiny trickle charges. I can't believe someone is still posting these kinds of anti-regen falsehoods in 2021. -Regen adds range, it's like getting 5% or more of free battery. -Reduces maintenance time and cost (I haven't changed a brake pad or fid...
by RTLSHIP
May 04 2021 12:33pm
Forum: EBike Technical
Topic: Do some motors have more/less torque with the same power levels?
Replies: 24
Views: 582

Re: Do some motors have more/less torque with the same power levels?

A smaller wheel diameter should give you more torque and less top speed than a bigger wheel. It depends on where you live or what you want to do. For hills, a smaller wheel is preferred. So each motor could be identical, yet power is delivered differently due to physics/leverages.
by RTLSHIP
May 04 2021 7:38am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

FWIW, with a clamping torque arm (that is thoroughly attached to the frame), you wouldn't need axle nuts/washers (except whatever is used to mate the axle shoulders to the frame). What's your view on the regen controller? As John CR and Grin Tech suggest : the axle goes to an fro and is fighting ag...
by RTLSHIP
May 04 2021 6:20am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

I think the culprit here is likely the regen. I may not need to weld anything. I want to do everything else I mentioned (fix axle, wiring etc) and either use the small 18 amp controller or disconnect the regen on the Aotema stock. The small controller works great and doesn't have regen but is only g...
by RTLSHIP
May 03 2021 10:55am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

I even use a torque arm with filled in steel strapping and no luck.1 or 2 pcs of strap. troque arm.JPG If you use shims, they should be placed on the flats, not the curved sections. I use a shim with my Grin torque arm to make it a near press fit. I use a piece of razor blade broken off to be the s...
by RTLSHIP
May 03 2021 9:05am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

I even use a torque arm with filled in steel strapping and no luck.1 or 2 pcs of strap. troque arm.JPG If you use shims, they should be placed on the flats, not the curved sections. I use a shim with my Grin torque arm to make it a near press fit. I use a piece of razor blade broken off to be the s...
by RTLSHIP
May 03 2021 6:51am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

Those types of torque arms are terrible and always deform. No name Chinese versions, yes. They have soft metal and loose fit, in my observation so far. Grin TAs and carefully handmade ones seem to work just fine. Just make a good torque arm that is both thick and has a bolt for a clamp tight fit on...
by RTLSHIP
May 03 2021 6:08am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

Even cheap torque arms typically work fine as long as axle nuts are nice and tight. Once regen is introduced all through hole torque arms are proven inadequate in the long run unless you go with a ridiculously expensive solution like Nord Lock nuts that prevent axle movement more than the torque ar...
by RTLSHIP
May 03 2021 6:02am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

E-HP wrote:
May 03 2021 12:55am
RTLSHIP wrote:
May 02 2021 3:52pm
can you show me a pic of that?
Can you post a pic of your frame's dropouts?
yes, but but it will take a day or so, as camera is at work and bike is at home. By the way the fork drop outs are 1/8" thickness not 1/4" I misspoke.
by RTLSHIP
May 02 2021 3:52pm
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

I have a steel bike frame but prefer to weld torque arm right on axle itself. If you have a steel frame, then why not just beef up your dropouts with 1/4" steel plates? No torque arm required. can you show me a pic of that? I do have steel dropouts and filed it to fit the axle, but once I rode...
by RTLSHIP
May 02 2021 7:20am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

Since you don't want to weld on your bike, fabricate a nice thick .25" or thicker clamping type torque arm. Almost none of my builds have the axle nuts installed on the hubmotor axle. My clamping dropouts hold the motor wheel on running power from 11kw-32kw peak input with regen braking on eve...
by RTLSHIP
Apr 29 2021 2:31pm
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

Why mess up the axle of the hub motor? I just take an angle grinder to some 1.5-2" x 5" x 1/4" flat bar steel to try and get a snug fit on the axle, figure out which way the dropout slot is going, make the axle notch. Then where the hose clamps would go I notch it the width of hose c...
by RTLSHIP
Apr 29 2021 9:20am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

I have a steel bike frame but prefer to weld torque arm right on axle itself.
by RTLSHIP
Apr 29 2021 7:21am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Re: Welding down a torque arm

spinningmagnets wrote:
Apr 29 2021 6:59am
I've seen some bonded with 3M's DP-420
Is that an epoxy? True welding would work to the point of having to break the torque arm parts. I know that the stripped threading side can be re-threaded but the axle (on that side) will have less overall volume and a new, smaller bolt.
by RTLSHIP
Apr 29 2021 6:56am
Forum: Bike Mechanical & Structural
Topic: Welding down a torque arm
Replies: 42
Views: 745

Welding down a torque arm

I'm wondering if anybody has tried spot welding down a torque arm to the axle of a front hub motor. I have a motor that still works but has some striped threads. There are a few concerns: 2 different kinds of steel and the high heat applied to axle could melt insulation. Yet it makes more sense than...
by RTLSHIP
Apr 22 2021 11:19am
Forum: Large EV General Discussion
Topic: Nobe 3-wheel EV car
Replies: 19
Views: 669

Re: Nobe 3-wheel EV car

3 wheel steering seems a little excessive for a simple car.. Especially when it could be NO wheels steering.. CjcyHicm3NA I couldn't hear in video whether it turns from front/ rear, but my guess is that the rear wheel, at minimum does the turning. All 3 wheel drive is stated here in article. The vi...
by RTLSHIP
Apr 21 2021 11:27am
Forum: Large EV General Discussion
Topic: Nobe 3-wheel EV car
Replies: 19
Views: 669

Re: Nobe 3-wheel EV car

It appears that all 3 wheels steer to turn. Many electric forklifts have 3 wheels but only the single back wheel can steer. The 2 front wheels only power the lift forward and backwards, so turning is done with "reverse" steering.
by RTLSHIP
Apr 19 2021 11:25am
Forum: EBike Technical
Topic: best shock type for rear hubs?
Replies: 12
Views: 299

Re: best shock type for rear hubs?

jimmy, did you consider a seat post with spring or shock to absorb some of the bounce?