Notices
Like Tree8Likes

New wheels that are like motors

Old 02-22-2019, 09:37 PM
  #21  
Senior Member
 
crazybeard's Avatar
 
Join Date: Aug 2013
Location: Tropico
Posts: 5,954
Default

Originally Posted by alfnator View Post
Also would be a lot easier to change out over a standard engine.
IIRC the SEMA video said about 3-4 hours for the average joe to replace the hub assemblies on both sides. That's not including installing the battery pack and wiring it up though.
crazybeard is offline  
Old 02-23-2019, 12:41 AM
  #22  
Senior Member
 
Join Date: May 2011
Posts: 1,384
Default

Originally Posted by crazybeard View Post


because what they remove is the same or heavier than what they add.
when i look at my car, the unsprung weight is already as light as they can make it within the confines of price and performance and durability. and they are adding a powerful electric motor, ring gears, seals and magic, whatever magic weighs. i guess they must be using the motor as a brake when they can.

edit - sorry motors are not in the wheel assembly. carry on.

Last edited by puppy; 02-23-2019 at 12:51 AM.
puppy is offline  
Old 02-23-2019, 02:25 PM
  #23  
Senior Member
 
crazybeard's Avatar
 
Join Date: Aug 2013
Location: Tropico
Posts: 5,954
Default

Originally Posted by puppy View Post
when i look at my car, the unsprung weight is already as light as they can make it within the confines of price and performance and durability. and they are adding a powerful electric motor, ring gears, seals and magic, whatever magic weighs. i guess they must be using the motor as a brake when they can.

edit - sorry motors are not in the wheel assembly. carry on.
im not sure but your edit makes it sound like you think the unspurng weight is just the wheel. If so, that's not the case, it also includes the hubs, a arms, brake rotors, calipers, pads, and basically anything connected to them that isn't lifted by the springs, from a simple description.

so when you reduce their weight or eliminate a component you have some lbs to play with. They reduced the wheel weight quite a bit, and their brakes are way lighter than traditional rotors and calipers.

There is a video that explains this. Just look for their name an SEMA in YouTube and they describe it all.
crazybeard is offline  
Old 02-24-2019, 03:46 AM
  #24  
Senior Member
 
Join Date: May 2011
Posts: 1,384
Default

they are claiming 'no unsprung weight penalty' in the opening salvo.
im just trying to reconcile
'They reduced the wheel weight quite a bit, and their brakes are way lighter than traditional rotors and calipers'
with existing wheel /suspension engineering that is already built with a low 'unsprung weight' design brief, and wondering what fat they found to trim.
puppy is offline  
Old 02-24-2019, 05:26 AM
  #25  
Senior Member
 
crazybeard's Avatar
 
Join Date: Aug 2013
Location: Tropico
Posts: 5,954
Default

Well I guess you didn't watch the video I mentioned. Here you go
SOSC likes this.
crazybeard is offline  
Old 02-24-2019, 05:59 AM
  #26  
Admirals Club Admiral's Club Member
 
Join Date: Feb 2013
Posts: 996
Default

Originally Posted by crazybeard View Post
Well I guess you didn't watch the video I mentioned. Here you go https://youtu.be/iQ4lTPVR3qc
i saw this online a few days ago. If they can make this work reliably, they may have something. AWD gas/electric hybrid sounds good to me. Other than it being a Chevy and being ugly as sin, I had hoped that the Volt would have made more of an impact than it did.
captwill_80 is offline  
Old 02-24-2019, 07:43 AM
  #27  
Senior Member
 
crazybeard's Avatar
 
Join Date: Aug 2013
Location: Tropico
Posts: 5,954
Default

Originally Posted by captwill_80 View Post


i saw this online a few days ago. If they can make this work reliably, they may have something. AWD gas/electric hybrid sounds good to me. Other than it being a Chevy and being ugly as sin, I had hoped that the Volt would have made more of an impact than it did.
watch "who killed the electric car" on Netflix it's an interesting show.

I dont have much interest in a bolt on like this. It makes sense for some applications where the 15k cost will be offset by mileage, such as last mile delivery vehicles and such. But for adding on to a normal car, I don't see a consumer demand for it. Too expensive, most don't want to hack their car for a battery pack and you loose space because it wasn't designed for it.

But the tech is cool
crazybeard is offline  
Old 02-24-2019, 08:02 AM
  #28  
Senior MemberCaptains Club Member
 
Join Date: Jan 2003
Location: Charleston, SC
Posts: 3,092
Default

I worked on a project with Honeywell many years ago to develop a wheel motor for aircraft. The idea was justified by the fuel savings by not using the turbofans to taxi the aircraft, so when you left the terminal to depart, you'd be propelled by the nose wheel motor and wouldn't fire up the turbofans until just prior to takeoff. Same strategy would be used during taxiing after landing.
The final design ended up being hydraulic, since there was already existing systems to draw from/modify etc.
The fuel savings were enormous, but I'm not aware that the effort ever gained traction, for whatever reason.
coastboater is offline  
Old 02-24-2019, 08:14 AM
  #29  
Member
 
Join Date: Mar 2018
Location: Mid Atlantic
Posts: 79
Default

I like the idea, but the ring gear looks kinda rinky-dink. Seems like gravel and dirt would chew that thing to pieces in short order.
SOSC is offline  
Old 02-24-2019, 01:18 PM
  #30  
Senior MemberCaptains Club Member
 
Join Date: Feb 2005
Posts: 1,089
Default

We used these on/as conveyor head (drive end) pulleys to eliminate external gear box/motor/chain/belts etc. This was 15/20 years ago. Somewhat limited in horse power, gear ratios etc. but very compact.
lodel is offline  
Old 02-24-2019, 01:43 PM
  #31  
Senior Member
 
Join Date: Feb 2017
Location: cape cod
Posts: 892
Default

Wait a minute haven't we always been told, "Not to reinvent the wheel?"
cman55 is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.