Search found 301 matches

by stan.distortion
Oct 04 2021 10:58am
Forum: General Discussion
Topic: how about a 3d printer section?
Replies: 186
Views: 3357

Re: how about a 3d printer section?

... Yea I really have no idea what is possible, nor what I want at all. I just see things, dont know quality, nor what is value when it comes to the retail market. Thanyou for reminding me this. All I know is tat I want to make cool looking stuff like goatman above. Yeah, your perspective changes a...
by stan.distortion
Oct 04 2021 10:28am
Forum: General Discussion
Topic: how about a 3d printer section?
Replies: 186
Views: 3357

Re: how about a 3d printer section?

... Ya know.. real 3d printers. Not that.. Amazon fodder. I can dream, right? I'll probally end up with the " Used, parts or repair" printer. Lol. From eBay. I know those ^^ printers that which I mentioned.. would require a large mortgage certainly. Don't knock the el-cheapo amazon specia...
by stan.distortion
Oct 04 2021 10:07am
Forum: Battery Technology
Topic: APL's Pressure Contact Battery box
Replies: 44
Views: 1040

Re: APL's V4 Cruiser Build.

I'm glad you mentioned plating, I've been thinking about that. Since I'll be taking the pack apart every year, it wont be too hard to clean the contacts each spring, and it should last at least through the summer. But eventually it will wear things down, so if I plate them with something it will la...
by stan.distortion
Oct 04 2021 9:29am
Forum: Alternative Energy
Topic: World's most efficient wind turbine?
Replies: 27
Views: 532

Re: World's most efficient wind turbine?

Utter bull5hit! Really sophisticated test proceedure !!! Not even a mention of the generator itself ? And a wind turbine like was used on remote properties to pump water 100 yrs ago Not watched the video, so many make similar wild claims flying straight in the face of physics that it's never worth ...
by stan.distortion
Sep 25 2021 6:00am
Forum: Battery Technology
Topic: APL's Pressure Contact Battery box
Replies: 44
Views: 1040

Re: APL's V4 Cruiser Build.

If you're still thinking of plates or strips, lots of cells covered by a single busplate then I'd look into rolling rather than pressing to do indentations. The one I linked is fairly repeatable, a pressed plate will locate on the bolt heads fairly accurately but not accurately enough to trust dimen...
by stan.distortion
Sep 25 2021 5:34am
Forum: Alternative Energy
Topic: Looking into small DIY wind turbines.
Replies: 43
Views: 3599

Re: Looking into small DIY wind turbines.

That will be 74% of the theoretical maximum impeller efficiency which is only about 45% so in reality actual efficiency would only be around 30%. I'm guessing that's total efficiency though, electrical output because they wouldn't be making a big deal about it otherwise seeing as you can get over 40...
by stan.distortion
Sep 24 2021 5:55am
Forum: Battery Technology
Topic: APL's Pressure Contact Battery box
Replies: 44
Views: 1040

Re: APL's V4 Cruiser Build.

3d printed press dies can work well, ideally with the printing just acting as a support for solid metal formers at the load points but using the printing to support metal plates with solid density printed material works ok. The part below has done about 120 plates for 2 poles of 26650 cells from 0.7...
by stan.distortion
Sep 13 2021 3:21am
Forum: EBike Technical
Topic: What to pair a 3000w motor with? Assistance selecting.
Replies: 13
Views: 1140

Re: What to pair a 3000w motor with? Assistance selecting.

Continue studying. While you're studying, maybe build some stuff that doesn't get juiced to its/your maximum potential. That's the best way to figure things out. This is not very helpful lol I am just looking for direct answers to my direct questions so I can make a purchase. That's it. Problem is ...
by stan.distortion
Sep 12 2021 10:15am
Forum: Items Wanted
Topic: Variable regen brake lever
Replies: 7
Views: 299

Re: Variable regen brake lever

ZeroEm wrote:
Sep 12 2021 10:04am
...
like a brake light switch?
Similar, variable rather than switched. Levers with built in load cells would be another option and also work for cables but neither option would be cheap and levers are a vulnerable part.
by stan.distortion
Sep 12 2021 8:30am
Forum: Items Wanted
Topic: Variable regen brake lever
Replies: 7
Views: 299

Re: Variable regen brake lever

Would be nice to have a hydraulic pressure sensor that would plumb straight into hydraulic brake lines. Bleeding and displacement shouldn't be an issue, many car brake light switches are done that way but it would probably need a very non-linear output curve and syncing the point where regen maxes o...
by stan.distortion
Sep 12 2021 5:50am
Forum: General Discussion
Topic: how about a 3d printer section?
Replies: 186
Views: 3357

Re: how about a 3d printer section?

How hot is the interior of your enclosure and what material is the good print in the background? That looks a lot like my first attempts with ABS, layer adhesion reducing to practically nothing as it gets higher and I wouldn't even get layers on cold days, the tip of the nozzle would be too cold to ...
by stan.distortion
Sep 06 2021 7:55am
Forum: Battery Technology
Topic: Mechanical force on Lithium cells
Replies: 5
Views: 282

Re: Mechanical force on Lithium cells

Some manufacturers data would be useful, I'm working on a modular weldless pack at the mo and guestimating terminal loads at about 1.5kg, would also like a clamping load on the cells but don't want to risk going too high with either.
by stan.distortion
Sep 05 2021 10:56am
Forum: EBike General Discussion
Topic: Does this make sense? (no chain or belt, pedal operated generator and wires to the rear hub motor)
Replies: 41
Views: 673

Re: Does this make sense? (no chain or belt, pedal operated generator and wires to the rear hub motor)

If all this accomplished was eliminating chain drive complexity etc, one could drive a hydraulic motor with the cranks and run fluid line in a closed system to a hydro motor at the rear - line running to the back and return to the front....negligible loss and easy placement etc. I think the promise...
by stan.distortion
Sep 03 2021 8:58am
Forum: Bike Mechanical & Structural
Topic: Options for fixing over filed axle dropout?
Replies: 59
Views: 1080

Re: Options for fixing over filed axle dropout?

You're still planning on adding an additional plate to re-enforce the dropout, right? If not and you're just planning on filling in where you've filed too deep then you're definitely going to need torque arms imo, welding will improve the situation but it won't be as strong as the original dropout n...
by stan.distortion
Sep 03 2021 8:06am
Forum: Bike Mechanical & Structural
Topic: Options for fixing over filed axle dropout?
Replies: 59
Views: 1080

Re: Options for fixing over filed axle dropout?

Imagine an open ended spanner, you're trying to more or less the same thing here, something that's resisting being spread apart. If you took a length of bar and welded two lugs to it to do the same job you'd need a lot of bracing, the lugs are being pushed apart and the weld would be at the weakest ...
by stan.distortion
Sep 03 2021 7:07am
Forum: Bike Mechanical & Structural
Topic: Options for fixing over filed axle dropout?
Replies: 59
Views: 1080

Re: Options for fixing over filed axle dropout?

Can he braze it instead? MIG would be ok, no worse than TIG if regular filler rods are used. TIG generally gives a better finish but a good welder with a MIG can do a nice, clean weld on there. Seems like the alloy is a significant concern so brazing would be the best option if he can do it imo but...
by stan.distortion
Sep 03 2021 5:59am
Forum: EScooters/EMotorcycles
Topic: Controller to Radiator Thermal Paste
Replies: 5
Views: 341

Re: Controller to Radiator Thermal Paste

+1 to ditching the radiator, practically no thermal mass unless filled and it's just something else to go wrong, a leak could result in a flash-fried controller. Tidy mounting spot though and a slab of finned aluminium would serve you better and be even tidier.
by stan.distortion
Sep 03 2021 5:41am
Forum: Bike Mechanical & Structural
Topic: Options for fixing over filed axle dropout?
Replies: 59
Views: 1080

Re: Options for fixing over filed axle dropout?

Can he braze it instead? MIG would be ok, no worse than TIG if regular filler rods are used. TIG generally gives a better finish but a good welder with a MIG can do a nice, clean weld on there. Seems like the alloy is a significant concern so brazing would be the best option if he can do it imo but ...
by stan.distortion
Sep 03 2021 5:11am
Forum: Bike Mechanical & Structural
Topic: Options for fixing over filed axle dropout?
Replies: 59
Views: 1080

Re: Options for fixing over filed axle dropout?

No matter what the steel alloy is, if it is forged (?) any serious heat, like welding, can alter the micro structure and grain allignments that give forging their strength. Must be why they do not weld them to the tubes to begin with. Take a closer look, a well designed forging or casting will have...
by stan.distortion
Sep 02 2021 8:21am
Forum: EBike General Discussion
Topic: Parts for pair of steerable wheels?
Replies: 22
Views: 293

Re: Parts for pair of steerable wheels?

That 250w rule... obviously the law should be obeyed but some laws are just plain stupid. When was the last time you saw a bail of hay in a taxi? UK law requires they carry one at all times for the horse (may have been dropped now, they had a clearout of those kind of laws a few years back). A 250w ...
by stan.distortion
Sep 02 2021 6:09am
Forum: General Discussion
Topic: how about a 3d printer section?
Replies: 186
Views: 3357

Re: how about a 3d printer section?

downloaded autocad inventor for a 30 day free trial but they are a little too nosey about my life :lol: so deleted it from the laptop going to try free cad, the hardware guy on youtube explains it well and it looks easy :thumb: https://www.youtube.com/watch?v=uh5aN_Di8J0 Ymmv with freecad, lots of ...
by stan.distortion
Sep 01 2021 8:02am
Forum: Bike Mechanical & Structural
Topic: Options for fixing over filed axle dropout?
Replies: 59
Views: 1080

Re: Options for fixing over filed axle dropout?

As above, maybe some extra bracing up the frame tubes but I've no doubt that would be as strong as original. Fwiw, there are plenty of cheap and good quality hole saw sets available now and they're ideal for making a heavy disk that would work ok, I often use the cheap aldi sets on 6mm or more steel...
by stan.distortion
Aug 31 2021 11:43am
Forum: EBike General Discussion
Topic: Parts for pair of steerable wheels?
Replies: 22
Views: 293

Re: Parts for pair of steerable wheels?

I've no experience with them but QS do their popular 205 50H in a single sided mounting variant. All the ones I've come across so far are for a stud mounted (regular car type) wheel but I'd be surprised if they don't do a spoked model and even more surprised if they wouldn't build a couple for you t...
by stan.distortion
Aug 31 2021 9:28am
Forum: Bike Mechanical & Structural
Topic: Options for fixing over filed axle dropout?
Replies: 59
Views: 1080

Re: Options for fixing over filed axle dropout?

.... Cheers, that's super helpful. The frame is steel. I've never done anything like this before. Would you recommend going to a specialist frame builder or should any welding shop be ok? Any but I'd try car exhaust places first as they're more likely to be using TIG than MIG, either would do but T...
by stan.distortion
Aug 31 2021 7:51am
Forum: Bike Mechanical & Structural
Topic: Options for fixing over filed axle dropout?
Replies: 59
Views: 1080

Re: Options for fixing over filed axle dropout?

... Thanks. All I've got is a file, which I'm clearly not very good with. Does the cutting require something more industrial? It shouldn't, a vice, hacksaw and file is all you should need. Not a big job, just a fiddly one and a junior hacksaw (the small ones, about 6" blade length) would be fi...