Search found 7139 matches

by Drunkskunk
Jul 11 2020 10:52pm
Forum: General Discussion
Topic: Basic Question
Replies: 11
Views: 277

Re: Basic Question

The XT90 is just a superior connector for any hobby grade project. They have been tested to handle up to 270 amps for 10 seconds*, far more than a Powerpole will take. They're also smaller, non-reversible, and I've found they suffer corrosion less. There is also an anti-spark version to combat conta...
by Drunkskunk
Jul 11 2020 6:12am
Forum: E-Bike General Discussion
Topic: Is this a lie?! False Avertising
Replies: 15
Views: 365

Re: Is this a lie?! False Avertising

So do you think this is a 1kwh pack... Are these chinese packs still good for the $$$. Is lithium just lithium in the end??? No. As was pointed out before, this is a 3p pack, meaning it could be a 7.8ah pack, if it was built with proper 3.7v 2.6ah >20c 18650 cells. Amp hours times volts is watt hou...
by Drunkskunk
Jul 09 2020 11:58pm
Forum: E-Bike General Discussion
Topic: Any way to convert a rim brake fork to disc brake?
Replies: 23
Views: 326

Re: Any way to convert a rim brake fork to disc brake?

I have been using a Rock Shocks DHO for a long time on a commuter. That is a 20+ yr old 4 inch travel, double crown fork, through axle with both rim and disc brake mounts. I've forgotten, did the DHO come out before or after the dual crown Judy? I've had a mid 90's 100m travel Judy for so many year...
by Drunkskunk
Jul 09 2020 3:27pm
Forum: E-Bike General Discussion
Topic: Any way to convert a rim brake fork to disc brake?
Replies: 23
Views: 326

Re: Any way to convert a rim brake fork to disc brake?

ever4ything on Sram's website says that model should be disk compatible. Have you contacted Sram/Rockshox to see if they can help identify what you were sent? If it's a compatible model, maybe you can just switch the lowers. Otherwise, sell the fork. Nothing you can do to safely add disk brakes to t...
by Drunkskunk
Jul 09 2020 3:09pm
Forum: General Discussion
Topic: Crash Thread - lucky
Replies: 48
Views: 6243

Re: Crash Thread - lucky

I told this story elsewhere, but I should immortalize it here for humility reasons... I recently had a stupid low speed wreck. 20" front tire found a hole in the dark and stopped dead from like 10mph. The rest of the bike and I didn't. I landed on my head and was knocked out in the street, in the da...
by Drunkskunk
Jul 09 2020 12:07pm
Forum: E-Bike General Discussion
Topic: BBS02 Vs Crystalyte Rear Thru
Replies: 3
Views: 85

Re: BBS02 Vs Crystalyte Rear Thru

On the frame you listed before, I don't think the BBSHD will fit due to the way the downtube is shaped. Also, the seat is set far back due to the bike's geometry, so adding more weight to the rear will more adversely affect handling. Meaning a heavy rear hub motor is a bad idea. The downtube shape a...
by Drunkskunk
Jul 09 2020 11:47am
Forum: E-Bike General Discussion
Topic: Rear Derailleur Compatibilty for 5speed
Replies: 19
Views: 293

Re: Rear Derailleur Compatibilty for 5speed

Thanks, I think that’s the best option. Did anybody already try if 3speed (non-index or converted to non-index :D ) twist grip shifters for front derailleurs would work with a 5speed rear derailleur? I doubt it will as the cable throw won't likely be enough for the 5 speed rear. But you can try it....
by Drunkskunk
Jul 07 2020 7:05pm
Forum: E-Bike General Discussion
Topic: Rear Derailleur Compatibilty for 5speed
Replies: 19
Views: 293

Re: Rear Derailleur Compatibilty for 5speed

Standard 7 speed is 5.0mm spacing. Standard 5 speed is 5.3mm spacing. They aren't comparable, but it's close enough to "work". However, you will only be seated on 1 gear correctly, and all the others will grind. That will eventually lead to sprocket and chain failure, and isn't so healthy for the de...
by Drunkskunk
Jul 06 2020 6:02pm
Forum: E-Bike General Discussion
Topic: Largerr shunt for power?
Replies: 10
Views: 179

Re: Largerr shunt for power?

The Grin Shunt is a 50A shunt, that can handle 100A peaks. There is no voltage rating as shunt resistors can handle thousands of volts. If you plan to really use the full power of that Q205, I would look for a shunt who's continuous power rating is the same as the Max pow you plan to pull. Peak powe...
by Drunkskunk
Jul 03 2020 9:49pm
Forum: E-Bike General Discussion
Topic: I need some help Wiring up my new controller to my new throttle.(images)
Replies: 8
Views: 133

Re: I need some help Wiring up my new controller to my new throttle.(images)

Likely that's just battery voltage for the panel, however it's slightly possible that's it's a data connector for something like a CANbus data panel. Not likely, but possible. The way to tell is with a volt meter. if it has battery voltage, it's fine for your throttler. If it has 5 volts, then ignor...
by Drunkskunk
Jul 03 2020 9:37pm
Forum: E-Bike General Discussion
Topic: Solar?
Replies: 5
Views: 137

Solar?

I've got a bike project coming up that needs low voltage solar. I don't plan to run the motor or charge the main battery on solar, but I will have a lot of non-optimal surface area and a bunch of low powered things I want to add to the bike. Everything can be run at 5 volts, as most is USB compatibl...
by Drunkskunk
Jul 01 2020 7:48pm
Forum: Battery Technology
Topic: Amp hour question.....
Replies: 3
Views: 87

Re: Amp hour question.....

Your math is right. 58v 12ah converts to 12v 58ah. I'm not familiar with that converter. If Justin/Grin says it's 95% I'd trust that, but there may be caveats to that. DC-DC converters rarely have a set efficiency that's the same over all voltages and loads. Some are rated for a specific conversion ...
by Drunkskunk
Jun 30 2020 1:52pm
Forum: E-Bike General Discussion
Topic: Buy or build...
Replies: 8
Views: 206

Re: Buy or build...

only you can decide if you want to build your own or let someone else do it for you. ... yeah, i am biased.. but consider, there are really only 2 kinds of ebikers: Those who decide their storage room needs shelves, so they go to the store to buy shelves. Those who decide their storage room needs sh...
by Drunkskunk
Jun 29 2020 4:25pm
Forum: E-Bike Technical
Topic: Hub motor under vacuum (in theory)
Replies: 4
Views: 100

Re: Hub motor under vacuum (in theory)

The coil acts on the magnet ring, creating resonance that produces sound from the magnets as well. In things like Drones, where the brushless motor is used as a beeper for locating a downed drone, it's the coil acting on the magnet to vibrate the outer ring, not the coil it's self that produces the ...
by Drunkskunk
Jun 28 2020 4:47pm
Forum: E-Bike Technical
Topic: Increasing top speed by overvolting?
Replies: 10
Views: 345

Re: Increasing top speed by overvolting?

Your speed Unload VS loaded is about right for a 48V kit. You should pick up a bit more speed from a Lithium battery over your lead acid battery, because of less voltage sag under load, but not much. Running both 48 volt batteries in series would get you over 45mph. But 40mph takes roughly 3 times m...
by Drunkskunk
Jun 28 2020 12:46pm
Forum: General Discussion
Topic: Custom frame.
Replies: 9
Views: 274

Re: Custom frame.

If you were going with a traditional lugged style frame, then brazing makes sense. If you're going with something more modern, MIG or TIG makes far more sense. 4130 is easily welded. You aren't going to find a "drop-in" suspension worth using. there are far too many variables in suspension design fo...
by Drunkskunk
Jun 28 2020 11:54am
Forum: E-Bike General Discussion
Topic: Forward exiting vs rear exiting horizontal drop outs
Replies: 6
Views: 140

Re: Forward exiting vs rear exiting horizontal drop outs

While it's really a non-issue, as both dropouts are fine, the Straggler's dropouts are going to be slightly stronger against motor axle twist than the Ogre. Of course, you need to use torque arms with either, so the slight advantage is moot. The rear opening dropout would make it easier to run a sin...
by Drunkskunk
Jun 22 2020 9:29pm
Forum: E-Bike Technical
Topic: Advanced Mode Blix eBike?
Replies: 5
Views: 303

Re: Advanced Mode Blix eBike?

Cool. Glad it worked out.
by Drunkskunk
Jun 22 2020 2:37am
Forum: E-Bike Technical
Topic: LYEN 18FET Max Amps?
Replies: 8
Views: 118

Re: LYEN 18FET Max Amps?

As the others have said, it really depends on the motor, how it's being used, and a bunch of other things, like does it have the buss bar mod, does it get good airflow, are you laboring it at part throttle, or at full throttle.. I used an Lyen 18 FET on my Monster bike. I slowly upped the power over...
by Drunkskunk
Jun 20 2020 9:09pm
Forum: E-Bike Technical
Topic: Advanced Mode Blix eBike?
Replies: 5
Views: 303

Re: Advanced Mode Blix eBike?

Welcome to the forum.

On page 10 of this manual it explains how to get into advanced settings. page 12, #12 tells you how to set the max speed.
http://www.shinga.nl/wp-content/uploads ... -V1-EN.pdf
by Drunkskunk
Jun 20 2020 8:54pm
Forum: E-Bike General Discussion
Topic: Large front/small back wheel
Replies: 22
Views: 510

Re: Large front/small back wheel

You can take things to the extreme, but it's not likely to be something you would enjoy. While a small 12" wheel will give more torque, it will also suck at rolling over even the smallest of crack. you and any cargo you have on the back will feel every bottlecap in the road with a tiny 12" wheel. 20...
by Drunkskunk
Jun 20 2020 7:50pm
Forum: E-Bike General Discussion
Topic: fixing flats..which brand?
Replies: 18
Views: 349

Re: fixing flats..which brand?

Rema Tip Top are the best of the best in my experience, but most glue on patches are fine. In a pinch, you can use the cement and a piece of old tube to patch a hole, as long as you aren't using an undersized tube in the tire. The peel-N-stick patches will often get you home, but rarely seal complet...
by Drunkskunk
Jun 19 2020 9:30pm
Forum: General Discussion
Topic: Can someone tell me if this diagram I made is correct ?
Replies: 4
Views: 244

Re: Can someone tell me if this diagram I made is correct ?

That will work. However, it will be better for balancing your cells if you wire them up parallel first, then wire in series. Right now, you have 4 10s2p packs wired in parallel. the optimum way would be 1 pack of 10s8p. Unless you have a balancer for each of the 10s2p packs, then balancing them all ...
by Drunkskunk
Jun 19 2020 7:48pm
Forum: E-Bike Technical
Topic: Advise Please: Fitting MAC hub motor to thru axel ends
Replies: 5
Views: 126

Re: Advise Please: Fitting MAC hub motor to thru axel ends

You can't. First, unless there's been a design change, the threads are 14mm. a through axle is 12mm. No amount of lube is going to make a 14mm shaft go into a 12mm hole without wrecking it. Second, you can't get it in there without cutting one hole off anyway. Third, there wouldn't be a way to safel...
by Drunkskunk
Jun 19 2020 5:50pm
Forum: E-Bike General Discussion
Topic: new and here for help and knowledge
Replies: 2
Views: 84

Re: new and here for help and knowledge

Welcome to the forum. 27mph uses about 750 watts of power to maintain on flat ground. If gearing isn't your issue, I would bet you have current limiting of some kind holding you back. 37mph will take around 2000 watts.