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Forum » Three Weehler EVs » TWIKE / TW4XP

New USA Twike owner (TW 434)

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Author	Message
Written on: 30 January 2009 [11:16]
Yardonn registered since: 22.08.2007 Posts: 156	Congratulations... I didn'T do this because i condidered it to be to much work... Sadly you don't work for FineMobile as developer... But if they would have to pay your hours, it would have been an expensive development, or? Greeting Alleweder 4 http://www.akkurad.com allmost full weather protection for one person at 0 - 1.5 kWh / 100 km CityEl as secondary E-Car
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Written on: 24 March 2009 [12:02]
Franko30 Moderator registered since: 08.09.2007 Posts: 79	Hi, it's been a long time since I was online in this forum. Good to hear your project isn't canceled. If everything works out fine, I bet a lot of people might be interested to use your solution. Any plans for publishing your specs online. webfootguy wrote: I have learned a tremendous amount of technical information about the vehicle (including disassembly of the 68HC11 based BMS code, fully decoding the BMS protocol itself, battery service program 3.6 patched for English, etc). What Fun! I wish I had the energy to to that. Instead I now have two Twikes: One for me (TW 891, a Twike Easy, as my doctor told me not to pedal anymore because of my knees) and the TW 808 is now used by my partner, as her (still) husband needed his car for himself. Cheers Frank Twike 891 easy: 24 Ah Li-Ion-Mn batteries, 360 V, about 7 kWh/100 km (336 US-miles per Gallon) | Citysax 002: 160 Ah Li-iron phosphate batteries, 83 V, about 13 kWh/100 km (180.93 US-Miles per Gallon)
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Written on: 01 April 2009 [07:27]
webfootguy Topic creator registered since: 22.07.2008 Posts: 9	Hi folks, I drove TW 434 last night for 5.1 miles! I have 5 working BMS boards and currently 2 working batteries (working on the third from several other packs). Great fun last night for 2 plus hours as I kept giving folks rides. Next, to get it properly titled and insured and finish the conversion to lithium (A123 M1 cells). It will take me several more months to complete that conversion but the increased range will be worth it. Does anyone know what is required to properly mount the third battery? My twike did not come with any brackets or hardware for mounting the third battery but I know from pictures that it lives just behind the passenger seat on its side. I assume some strong mounting is required due to the weight of the battery. Can I order this from the factory?
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Written on: 02 April 2009 [03:16]
childress Administrator registered since: 14.08.2007 Posts: 131	I'll go take pictures of 433's extra battery tonight. I do know that they normally do some sort of "axle strengthening" and there is some sort of ethical/technical debate about adding the weight of the third battery (NiCad) due to the risk of breaking the Axel. I'm pretty sure that 433 had some sort of Axle strengthening by Stephan when he was here in 2005, but I didn't own her at that time so I'm unsure of the process. Do you have Stephan's contact info? His english is very good and he's pretty free with the information (when he can be). Fine Mobile can be very protective of their intellectual property though... if you drop me an e-mail at childrss(at)illinois[dot]edu we can discuss some of the intracacies I've also had warnings from Walt B (one of the oldest and highest-mileage Twike pilots in the US) to be sure to keep any water/dampness/crumbs from falling down the back shelf -- and especially to be watchful for leaks in the rear window as they will go right down to this compartment. I think the original plastic rear shelf in 433-era should be replaced with something stronger -- yet fireproof. The 10-year-old electrical connections to the charging cable to the internal wiring were "spade" connectors, and the insulation covering them vibrated/jarred loose causing a charring/scortching of the underside of the plastic bench during a fast charge (16-20A). So waterproof yet easily cooled, strong but fireproof & light Commute suck? Twike it; You'll like it! http://www.uiuc.edu/goto/twike
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Written on: 02 April 2009 [06:44]
webfootguy Topic creator registered since: 22.07.2008 Posts: 9	Thanks Matt. I have seen hints of upgrades/fixes during the 2005 USA Tour which of course my vehicle missed. If I can get some details on what is needed, maybe I can order the necessary upgrades and do it myself. I agree on keeping the back shelf area clean and dry. All the high voltage and high current stuff is exposed when the back shelf is removed and not sealed against moisture. If you look at the mods that were done to fit in the D NiCad cells (see earlier thread I posted in today), they turned the back shelf on its side with a cover which appears to do a good job of protecting it. I wonder if this is worth considering? Maybe just adding a clear plastic cover bent from platic with a heat gun would work just a well. I'll be very careful to evaluate the "seal" of the back area before I venture out in rain. And we get a lot of days of rain here in Portland, Oregon. I my redo the connection to power to avoid the "melted" effect I see you experienced.
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Written on: 02 April 2009 [14:41]
childress Administrator registered since: 14.08.2007 Posts: 131	Ok, all of these were shot with the same perspective (or rotated to match) -- I'm standing shooting from the front of the Twike. Essentially it's just a 3-sided metal cover (it appears to be a box, but it's not -- it's open on the rear, front and I believe the bottom), and it appears that it's "strapped/belted" in. In the front it's attached to the passenger side seat rail (pretty easily seen in the photos, I believe) and in the rear it's attached to the horizontal rail that goes between the front lip of the bench and the TB Woods Inverter? This is much more difficult to see in the photos. Commute suck? Twike it; You'll like it! http://www.uiuc.edu/goto/twike Attachment IMG_1192.jpg (File type: image/jpeg, Size: 31.67 kilobytes) — 40 downloads IMG_1194.jpg (File type: image/jpeg, Size: 40.72 kilobytes) — 34 downloads IMG_1191.jpg (File type: image/jpeg, Size: 42.8 kilobytes) — 33 downloads IMG_1175.jpg (File type: image/jpeg, Size: 32.3 kilobytes) — 41 downloads
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