Search found 27 matches

by Pentti M Reku
Dec 18 2020 4:16pm
Forum: Stand-up EScooter/ESkateboards
Topic: 10kW stand-up scooter with air suspension
Replies: 280
Views: 74541

Re: 10kW stand-up scooter with air suspension

Wow, what a thread. Please post a llnk if you publish anything from your CNC project elsewhere!
by Pentti M Reku
Dec 08 2020 4:34pm
Forum: EBike Build Threads
Topic: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive
Replies: 84
Views: 5040

Re: Neppy's Maxarya Ray 2 Semi Recumbent

Raising the crown race worked mechanically fine, even with the flimsy alu can shims for centering. I was planning on welding the crown race to spacer, but I ended up modifying my frame to get the chainline I needed. Problem was I used 30mm longer fork + 30mm spacer, which ruined the geometry and mad...
by Pentti M Reku
Dec 08 2020 1:28pm
Forum: EBike Build Threads
Topic: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive
Replies: 84
Views: 5040

Re: Neppy's Maxarya Ray 2 Semi Recumbent

There are also crown races which are up to 10mm tall. I could actually buy a few crown races, grind the top off, and metal epoxy the current crown race to these spacers to make a tall crown race.. the SR Suntour XCT JR L has a bulged section that's 10mm tall.. so this would actually work. For extra...
by Pentti M Reku
Dec 06 2020 4:08pm
Forum: EBike General Discussion
Topic: can a 194mm steerer tube replace a 170mm one?
Replies: 9
Views: 344

Re: can a 194mm steerer tube replace a 170mm one?

You could use a spacer between the top nut and upper bearing race, though you need likely something better than a modern threadless spacer. This was just about the nicest new rim brake fork I could find: https://www.ebay.com/itm/RockShox-Recon-Silver-TK-Fork-26-100mm-Travel-Solo-Air-9mm-QR-Disc-V-Br...
by Pentti M Reku
Dec 05 2020 6:19pm
Forum: EBike Build Threads
Topic: Maxarya Ray 2 Semi Recumbent w/high efficiency mid drive
Replies: 84
Views: 5040

Re: Neppy's Maxarya Ray 2 Semi Recumbent

Ah, so close. I chose 120mm length cranks for comfort mostly, no need for maximal power output anyways as long as you have an electric motor to assist. Good news is that those square taper bottom brackets are available up to 140mm width on ebay.
by Pentti M Reku
Dec 03 2020 11:39am
Forum: E-Vehicles General Discussion
Topic: A Good Threaded 1 1/8" suspension fork????
Replies: 11
Views: 783

Re: A Good Threaded 1 1/8" suspension fork????

Get a threadless fork, you only need to change your upper headset bearing or grind the threads out of the old one and get an ahead style stem. Rock shox with an air spring gives a nice ride, but coils work too. I looked at ebay and you can still get a silver tk 32 with canti mounts for 26" whee...
by Pentti M Reku
Dec 02 2020 4:02am
Forum: General Discussion
Topic: YOUTUBE RECOMMENDS :
Replies: 985
Views: 103949

Re: YOUTUBE RECOMMENDS :

https://www.youtube.com/watch?v=msSio5M-G9k

I wonder who would have comparable skills and creativity in 2020 as JT had in 1970´s..
by Pentti M Reku
Dec 01 2020 2:43pm
Forum: EScooter/EMotorcycle Build Threads
Topic: Aprilia 125 rs conversion
Replies: 18
Views: 1835

Re: Aprilia 125 rs conversion

You can find batteries with decent performance in some hybrid vehicles. They are not most energy dense in wh/kg sense, but will put out plenty of power for a price thats hard to beat. BMW hybrid packs with Samsung cells come to mind. 5-6 modules of 16s in a pack, 1,5kwh rated capacity (2kwh in later...
by Pentti M Reku
Nov 29 2020 4:09am
Forum: General Discussion
Topic: Bryan Lunduke ( linux nerd ) argues against commercial electric cars
Replies: 21
Views: 1858

Re: Bryan Lunduke ( linux nerd ) argues against commercial electric cars

I hope we will have a lot more people in the future hacking and opening this proprietary EV technology for recycling parts for conversions and possibly circumventing Tesla style attempts to block the right to repair our own stuff. Damien Maguire is one of those rare people that work towards open sol...
by Pentti M Reku
Nov 27 2020 5:25am
Forum: EBike Build Threads
Topic: Another full suspension build
Replies: 274
Views: 7262

Re: Another full suspension build

Hey, just a friendly reminder for anyone getting into these Nissan cells. Factor in the degradation in your wh/$ estimates! Unless sure, buy capacity tested modules from a reputable seller.
by Pentti M Reku
Nov 26 2020 5:19am
Forum: EScooter/EMotorcycle Build Threads
Topic: Electric Roadster
Replies: 146
Views: 11684

Re: Electric Roadster Motorbike

Free project motorcycle? 300$ A123 batteries? Oh dear, that will make some jealous people, including me. Can´t wait to see what will you come up with your mad maker skills!
by Pentti M Reku
Nov 26 2020 5:15am
Forum: General Discussion
Topic: YOUTUBE RECOMMENDS :
Replies: 985
Views: 103949

Re: YOUTUBE RECOMMENDS :

Warning: Esk8 advertising, but a cool vid tho.

https://www.youtube.com/watch?v=x8n-n8baYb4
by Pentti M Reku
Nov 24 2020 5:47am
Forum: General Discussion
Topic: YOUTUBE RECOMMENDS :
Replies: 985
Views: 103949

Re: YOUTUBE RECOMMENDS :

https://www.youtube.com/watch?v=ZjLAl1Pix_0 Tucker Neary races the Alta Redshift MX against gas dirt bikes in the Expert Short Course Class in the Texas State Championship Enduro Circuit. Wow, those things are faaast in the right hands. https://www.youtube.com/watch?v=_KAuOZgx3v0 Tucker Neary from E...
by Pentti M Reku
Nov 22 2020 8:53am
Forum: General Discussion
Topic: Re: How often should the rechargeable battery of an electric car be replaced?
Replies: 15
Views: 1208

Re: How often should the rechargeable battery of an electric car be replaced?

In a tweet last week Tesla CEO, Elon Musk, indicated the cost of replacing battery modules in the companies Model 3 will cost about $3000 – $7000 USD. Not a bad price considering the current batteries are designed to last 300,000 to 500,000 miles, which is the equivalent of 1,500 cycles. Poorly dea...
by Pentti M Reku
Nov 20 2020 8:04am
Forum: EBike General Discussion
Topic: Your thoughts on frames and riding positions?
Replies: 39
Views: 1948

Re: Your thoughts on frames and riding positions?

Cost is an issue, most recumbents cost as much as a full suspension good quality mtb, for something special you are looking at new DH bike equivalent prices. One thing that makes recumbent riding position great for ebikes is that you don´t have the usual saddle problem. The less power you put down f...
by Pentti M Reku
Nov 18 2020 4:43pm
Forum: General Discussion
Topic: YOUTUBE RECOMMENDS :
Replies: 985
Views: 103949

Re: YOUTUBE RECOMMENDS :

https://www.youtube.com/c/WhyNotCycles/videos

Such a cool guy, seems to run a small bike shop maybe somewhere in Greece, builds his own washing machine BLDC powered bike. Halbach array of neodymium magnets in 3D printed carriers, VESC, etc.
by Pentti M Reku
Nov 18 2020 9:30am
Forum: EBike General Discussion
Topic: Your thoughts on frames and riding positions?
Replies: 39
Views: 1948

Re: Your thoughts on frames and riding positions?

Best bike is the bike that suits the riding you do and your abilities and limitations. I used to ride 40+ km round trips every day in semi urban environment, so I ended up choosing a high racer style recumbent with 26" wheels. Due to poor roads and need for carrying loaded panniers it evolved i...
by Pentti M Reku
Nov 18 2020 8:47am
Forum: Bike Mechanical & Structural
Topic: DNM USD 8 vs USD 8s for QULBIX 140r Moto frame?
Replies: 12
Views: 769

Re: DNM USD 8 vs USD 8s for QULBIX 140r Moto frame?

If you are on a strict budget and don´t mind a bit of additional weight, going for a moped front end might be a cheap solution. Steerer should be the same diameter and parts are super affordable.
by Pentti M Reku
Nov 16 2020 2:25pm
Forum: EBike General Discussion
Topic: Upgrading Magnets in Hub Motors
Replies: 24
Views: 3813

Re: Upgrading Magnets in Hub Motors

https://sc02.alicdn.com/kf/HTB1CmOHegZC2uNjSZFn761xZpXau/231914185/HTB1CmOHegZC2uNjSZFn761xZpXau.png_.webp I bought this older 17" QS hubmotor that was advertised as 1500W continuous and 3000W peak with a kv of 9,3. Different casting but might be similarly wound and with crappy magnets as in t...
by Pentti M Reku
Nov 15 2020 3:08pm
Forum: General Discussion
Topic: What is happening with the forum this week?
Replies: 33
Views: 1372

Re: What is happening with the forum this week?

So thats what it was. FYI you can use a free proxy service to read the board in similar situations. I wouldn´t log in through one though.
by Pentti M Reku
Nov 15 2020 4:47am
Forum: EScooter/EMotorcycle Build Threads
Topic: KTM 200 exc goes electric
Replies: 252
Views: 46944

Re: KTM 200 exc goes electric

Hi, this video editor is free and pretty easy to use, so we dont need to look at that stupid announcement next time: https://www.openshot.org

Cool bike, I have been following you for a while!
by Pentti M Reku
Nov 14 2020 5:20am
Forum: EBike Build Threads
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 350
Views: 40760

Re: High performance & durability Cannondale Semi Recumbent

So i figured.. before fixing the cannondale frame, i should convert the cannondale's front to a 20" wheel with a stiff fork so that i can run a moto tire on the front...however, there is no way in hell in can find the KP058 headset conversion kit to do that. I'm quite frustrated overall. Hey, ...
by Pentti M Reku
Nov 13 2020 4:18am
Forum: EScooters/EMotorcycles
Topic: Ezuki for Berlin
Replies: 4
Views: 594

Re: Ezuki for Berlin

De-airing might be trickier? Super nice looking machining and build quality.
by Pentti M Reku
Nov 12 2020 10:32am
Forum: EScooter/EMotorcycle Build Threads
Topic: Streetfighter/Sportbike build
Replies: 40
Views: 3275

Re: Streetfighter/Sportbike build

Looks like a cool project. Any weight estimates? What is your plan for EMC testing?
by Pentti M Reku
Nov 08 2020 7:56am
Forum: E-Vehicles General Discussion
Topic: BMW E "i5" conversion by Matija
Replies: 55
Views: 9197

Re: BMW E "i5" conversion by Matija

600€ is a cheap solution If you can avoid EMC testing. Congrats for the cool conversion!