tjet spinning brushes - HobbyTalk
 
LinkBack Thread Tools Search this Thread
post #1 of 13 (permalink) Old 01-20-2010, 10:41 PM Thread Starter
Elder Statesman
 
Join Date: Feb 2008
Location: Narragansett, RI
Posts: 1,725
tjet spinning brushes

hey fellas i just started using a 9 volt battery to stare at the lil motors and saw that on some or most the brush will spin. some fast some not so fast.my question is should i bend the end of the tounge up so so it catches the the slot that i carved in the wizzard brush? or make a sharp crease in the tounge forming a catch for the brush. i just dont what to mess up a tuffy.i likem too much to deflower a virgin.i also realize that i need to increase tongue pressure to get more hp but the spinning thing i,m not so sure i like it.also let me say the 9 volt battery has opened my eyes to these lil cars.thanx for reading this it,s probably asked before too.
joegri is offline  
Sponsored Links
Advertisement
 
post #2 of 13 (permalink) Old 01-20-2010, 11:55 PM
Lifetime Member
 
tjetsgrig's Avatar
 
Join Date: Nov 2009
Location: Lansdale, Pa.
Posts: 805
There has been much debate on this topic. I like mine to spin. My timing system doesn't lie. I've notched the brushes so they won't spin, then ran with the brushes spinning. I've always gotten better e.t.'s out of a spinning brush car. I find that the brushes wear more evenly ( they don't cock over in the hole ) and the comm seems to like it better. These are just my observations during R&D. Others will disagree!!
tjetsgrig is offline  
post #3 of 13 (permalink) Old 01-21-2010, 12:13 AM Thread Starter
Elder Statesman
 
Join Date: Feb 2008
Location: Narragansett, RI
Posts: 1,725
thanx for that grig.i can see where the wearing would be even by spinning.hoping i didnt poke a beehive . think maybe i,ll adjust the tongue pressure accordingly and hope for the best(like a cool running tuffy).the tuning section on ht is my fav for the last few days. always good info/input!!
joegri is offline  
post #4 of 13 (permalink) Old 01-21-2010, 12:44 AM
Elder Statesman
 
SwamperGene's Avatar
 
Join Date: Nov 2003
Location: Lehigh Valley PA
Posts: 1,348
Send a message via AIM to SwamperGene
Quote:
Originally Posted by tjetsgrig View Post
There has been much debate on this topic. I like mine to spin. My timing system doesn't lie. I've notched the brushes so they won't spin, then ran with the brushes spinning. I've always gotten better e.t.'s out of a spinning brush car. I find that the brushes wear more evenly ( they don't cock over in the hole ) and the comm seems to like it better. These are just my observations during R&D. Others will disagree!!
I agree, I think it's mostly because when you notch the brushes you are losing precious contact area...take a Radio Shack or similar pocket microscope and magnify a scored line - it looks like the rocky walls of the Grand Canyon, the brush spring is only gonna touch the peaks. If you start with good flat faces on both sides, spinning isn't going to hurt anything.
SwamperGene is offline  
post #5 of 13 (permalink) Old 01-21-2010, 12:47 PM
Top Dog
 
ParkRNDL's Avatar
 
Join Date: Mar 2002
Location: Southern Central Pennsylvania
Posts: 6,353
Careful with the pressure! On stock tjets, you want as much pressure as possible, but did you mention that this is an original tuffy? I have found that they do NOT respond well to too much pressure. The brush springs on a tuffy are already stiffer because they are silver plated. Too much pressure actually slowed mine down and made them run hotter...

--rick
ParkRNDL is offline  
post #6 of 13 (permalink) Old 01-21-2010, 05:02 PM
Member
 
Join Date: Dec 2009
Location: Alabam
Posts: 103
Right-on about the stiffer brush springs on TO's. Totally different animal than the solid coppers.
WooffWooff is offline  
post #7 of 13 (permalink) Old 01-21-2010, 07:07 PM
HobbyTalk Pro
 
Join Date: Jan 2006
Posts: 2,519
Quote:
Originally Posted by ParkRNDL View Post
On stock tjets, you want as much pressure as possible...
I haven't found this to be true. Adjusting brush tension, from the little I've done, seems to be a balancing act between too much and too little pressure. Too much and the car runs tight and hot. Too little and you don't get good electrical flow.

I remember the good old days on the DL when the subject of spinning brushes came up. Guys were pulling out physics books to prove their point. It was quite a show. I don't think either side of the argument ever gave in.

Joe
Grandcheapskate is offline  
post #8 of 13 (permalink) Old 01-21-2010, 08:13 PM Thread Starter
Elder Statesman
 
Join Date: Feb 2008
Location: Narragansett, RI
Posts: 1,725
thanx for comming back with your experience fellas. i went with some wizzard hockey puck type brushes and with adjustment to relieve some of the pressure i was able to get this tuffy to excelerate nicely with a nice coasting attitude.but what means the most to me is to have this bad boy running cool as the other side of the pillow!! now i just gotta deciede on a body. just got a 67 chevelle blk(modelmotoring type)its gonna need some serious choppin to make it look respectable to me.its back to the bench for a carving session tonite.
joegri is offline  
post #9 of 13 (permalink) Old 01-22-2010, 12:29 AM
Lifetime Member
 
tjetsgrig's Avatar
 
Join Date: Nov 2009
Location: Lansdale, Pa.
Posts: 805
Quote:
Originally Posted by Grandcheapskate View Post
Guys were pulling out physics books to prove their point. It was quite a show. I don't think either side of the argument ever gave in.

Joe
I don't need any physics books to know how to set my brushes up, my timing system told me everything I needed to know!

You're right Joe, I was witness to quite a few of those debates! It was very entertaining, to say the least!!

Jim Sgrig
tjetsgrig is offline  
post #10 of 13 (permalink) Old 01-23-2010, 06:58 PM
HobbyTalk Pro
 
Join Date: Aug 2003
Posts: 4,512
Quote:
my timing system told me everything I needed to know!
Hallelujah! Better words were never written. If my podium placement percentage was as simple as making the right choice between spinning brushes versus non spinning brushes I'd be one happy racer!

The first thing I'd do with an original Tuff One would be to put in JL or Dash magnets and JBs or Wizzard copper compound brushes. I've never met a silver TJet brush I liked for anything other than drag racing. I even prefer the JL domed copper brushes to the domed silver Aurora ones.
AfxToo is offline  
post #11 of 13 (permalink) Old 02-07-2010, 04:05 PM
Member
 
BrentCorvette's Avatar
 
Join Date: Jun 2008
Location: Daves HO Raceway
Posts: 16
Just bend the toungue a little bit at a time until you get the brush tension just right.
I personally dont think it makes a difference if the brushes don't spin, as long as they aren't hung up they should be fine.
BrentCorvette is offline  
post #12 of 13 (permalink) Old 02-10-2010, 09:08 PM
Elder Statesman
 
slotnewbie69's Avatar
 
Join Date: Dec 2008
Location: victoria bc canada
Posts: 1,652
i use notched and bevelled brushes. but i don't compete,so i can tune as i like.i don't think most clubs would allow them.i have heard of putting an x in the brush,to prevent it from spinning,as the guy who posted the technique thought spinning brushes were slower.
slotnewbie69 is offline  
post #13 of 13 (permalink) Old 02-10-2010, 10:58 PM
Elder Statesman
 
Join Date: Nov 1999
Location: Beatrice, Nebraska, USA
Posts: 587
Spinning brushes: They are best for road racing when not spinning. But it takes a good break-in period to get them to their maximum performance. For top flight drag racing, you don't have time to break them in so a spinning brush is better than a non broken-in stationary brush. IMHO...
LDThomas is offline  
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the HobbyTalk forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search



Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome