Go Back   DIY Go Kart Forum > Building Plans And Advice > Go Kart Discussion

Notices

Reply
 
Thread Tools Display Modes
  #1  
Old 01-02-2020, 05:19 PM
VotbKartting VotbKartting is offline
Junior Member
 
Join Date: Sep 2017
Posts: 5
Thanks: 3
Thanked 0 Times in 0 Posts
Default Right angle drive belt/torque converter

new here
just an idea
please leave feedback
pros and cons to design
thank you

HTML Code:
<a href="https://imgbb.com/"><img src="https://i.ibb.co/MZNHTMN/Screen-Shot-2020-01-02-at-7-11-01-PM.png" alt="Screen-Shot-2020-01-02-at-7-11-01-PM" border="0"></a>
HTML Code:
<a href="https://imgbb.com/"><img src="https://i.ibb.co/TtcPg4f/Screen-Shot-2020-01-02-at-6-07-32-PM.png" alt="Screen-Shot-2020-01-02-at-6-07-32-PM" border="0"></a>
Attached Thumbnails
Screen Shot 2020-01-02 at 7.11.01 PM.png  
Reply With Quote
  #2  
Old 01-02-2020, 06:07 PM
BigWes's Avatar
BigWes BigWes is offline
Senior Member
 
Join Date: Mar 2019
Location: Alabama
Posts: 654
Thanks: 65
Thanked 241 Times in 186 Posts
Default

Uneven sideload on the belt...over time as it stretches it will leave the pulley grooves... probably sooner than later.

This concept will work with something round like steel cable...I don't know how effective or reliable it would be under load.
__________________
This ain't rocket science boys!!!
Reply With Quote
The Following User Says Thank You to BigWes For This Useful Post:
VotbKartting (01-02-2020)
  #3  
Old 01-02-2020, 06:21 PM
VotbKartting VotbKartting is offline
Junior Member
 
Join Date: Sep 2017
Posts: 5
Thanks: 3
Thanked 0 Times in 0 Posts
Default

thanks for getting back to me!

can you explain "sideload" to me?
ive searched google cant find and thing that pertains to it
Reply With Quote
  #4  
Old 01-02-2020, 06:50 PM
itsid's Avatar
itsid itsid is offline
Moderator
 
Join Date: Jul 2013
Location: Ruhrpott [Germany]
Posts: 11,049
Thanks: 1,483
Thanked 4,594 Times in 3,467 Posts
Default

Nah that won't work well with a Torque converter.

The principle of a torque converter is mainly that the effective diameter of the
pulleys change.
In order to do so more often than not the belt will have to move laterally

even asymetric setups (like the series 30) has the "straight" sheave angled and
thus a belt that moves laterally.
And while that belt offset is small it's not really negligible.

And now the worst part:

the belt itself is rather stiff, it would NOT like to get bend around a corner that way.
And while you may be able to force it into that shape of course,
it'll retaliate
TCs have a rather bad efficiency (at best maybe 80%) if you force the belt
into any sort of bend, that will drop dramatically (a pulley offset alone can cause another 20% drop..
and you only have 55-60% of the motor power to your disposal.
AAND the belt itself will fail prematurely because of the additional stress.

the guiding pulley would need to be huge in order to keep the stress (and powerloss) down.

Also that pulley would need to move along it's axle in order to keep up with the belt moving up and down.

A right angle gearbox is far less complicated and far more reliable IYAM

'sid
__________________
Jokes about german sausage are the wurst.
Reply With Quote
The Following User Says Thank You to itsid For This Useful Post:
VotbKartting (01-02-2020)
  #5  
Old 01-02-2020, 07:02 PM
VotbKartting VotbKartting is offline
Junior Member
 
Join Date: Sep 2017
Posts: 5
Thanks: 3
Thanked 0 Times in 0 Posts
Default Quarter Turn Belt Drive

say it was not a torque converter just a quarter-turn v belt drive like so

Quarter Turn Belt Drive : The quarter turn drive always known as right angle belt drive, is used with shafts arranged at right angles and rotating in one definite direction. In order to prevent the belt from leaving the pulley, the width of the face of the pulley should be greater or equal to 1.4 b, where b- is the width of the belt. when the reversible motion is desired, then a quarter turn belt drive with guide pulley.

https://ibb.co/JqdYTJL

---------- Post added at 09:02 PM ---------- Previous post was at 08:58 PM ----------

also can you suggest a good 1:1 right angle gearbox

Last edited by VotbKartting; 01-02-2020 at 07:09 PM. Reason: More information on topic
Reply With Quote
  #6  
Old 01-02-2020, 08:14 PM
itsid's Avatar
itsid itsid is offline
Moderator
 
Join Date: Jul 2013
Location: Ruhrpott [Germany]
Posts: 11,049
Thanks: 1,483
Thanked 4,594 Times in 3,467 Posts
Default

All quarter turn belts I remember have been flat belts (no v belt.. more a leather strip really)

the thickness of the belt will always be an issue,
it just doesn't like to get bent or twisted.
And forcing it will cause heat (aka powerloss, thus premature wear)

'sid

PS just take a look at industrial RAGBs and I'm sure you'll eventually find one rated for your required hp and speed.
__________________
Jokes about german sausage are the wurst.
Reply With Quote
  #7  
Old 01-03-2020, 06:55 AM
BigWes's Avatar
BigWes BigWes is offline
Senior Member
 
Join Date: Mar 2019
Location: Alabama
Posts: 654
Thanks: 65
Thanked 241 Times in 186 Posts
Default

Right angle gearbox is a better option. You can probably source one at a reasonable price at a farm store. If it can handle the demands of a piece of heavy equipment a lightweight kart shouldn't be an issue. Just take into account any ratios or RPM requirements.
__________________
This ain't rocket science boys!!!
Reply With Quote
  #8  
Old 01-03-2020, 07:12 AM
JTSpeedDemon's Avatar
JTSpeedDemon JTSpeedDemon is online now
2019 Build Off Winner!
 
Join Date: Jan 2019
Location: Texas
Posts: 3,543
Thanks: 796
Thanked 551 Times in 499 Posts
Default

Some vertical shaft engine-edgers utilize a twisted belt setup, I saw one just yesterday. NOT like the one in the picture, it's just the best I could find with an image search. The setup I see on edgers has less twist so the power is transmitted from the vertical to horizontal plane, with both turning the same direction(pulleys at 90 degrees in relation to each other).

It might kind of work for your purposes, I don't know.

BTW - What are you doing that needs that kind of setup???
Attached Thumbnails
external-content.jpg  
__________________
Currently Flathead-Crazed
Reply With Quote
  #9  
Old 01-03-2020, 09:12 AM
anickode's Avatar
anickode anickode is online now
Senior Member
 
Join Date: Apr 2010
Location: S.E. Michigan
Posts: 2,186
Thanks: 87
Thanked 949 Times in 666 Posts
Default

That setup is called a Mule Drive, and can be done with a long V belt, but it will not work with a short, stiff torque converter belt. There is on on nearly every lawn tractor in some form or another.

Mule drives are also big time power-suckers. I run one on my rat wagon and there's so much friction loss in the driveline that the back wheels don't want to roll when you push it.
__________________
"Well that would be a bomb."
Reply With Quote
The Following 2 Users Say Thank You to anickode For This Useful Post:
JTSpeedDemon (01-03-2020), VotbKartting (01-13-2020)
  #10  
Old 01-13-2020, 03:28 PM
VotbKartting VotbKartting is offline
Junior Member
 
Join Date: Sep 2017
Posts: 5
Thanks: 3
Thanked 0 Times in 0 Posts
Default

thinking about mounting a predator vtwin on the front of a go kart
but the want the v to be parallel to the back axle
Reply With Quote
  #11  
Old 01-13-2020, 03:52 PM
JTSpeedDemon's Avatar
JTSpeedDemon JTSpeedDemon is online now
2019 Build Off Winner!
 
Join Date: Jan 2019
Location: Texas
Posts: 3,543
Thanks: 796
Thanked 551 Times in 499 Posts
Default

Your best bet will probably be a driveshaft of some sort running under the driver. Seems a little ambitious. Does it have to be in the front? Is it some kind of hot rod theme go kart?
__________________
Currently Flathead-Crazed
Reply With Quote
Reply

Thread Tools
Display Modes

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



All times are GMT -6. The time now is 12:41 PM.