R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road

Reply
 
Thread Tools Search this Thread
Old 01-07-2013, 08:02 PM   #1
Tech Rookie
 
Join Date: Jan 2013
Posts: 2
Default Acme cyclone (self build) wheels tight to spin like brake is applied slightly

Hi.

I got an Amce cyclone rc car for Christmas and have finished building it. The wheels should spin freely, I would imagine, but they are tight to spin, to give an example of how I mean, it feels like the brake is being applied slightly.

It is not a brake issue though as the brake disc has sufficient room between the brake pads.

I have tried taking the differentials (front and rear) out and rebuilding them but the 4 wheels are still rather tight to spin by hand. They do turn, but no matter how fast I try to spin any wheel, as soon as I let go the wheel instantly stops spinning.

Any ideas of what the problem could be?

Thanks!
StephenIrwin is offline   Reply With Quote
Old 01-08-2013, 12:14 PM   #2
Tech Rookie
 
Join Date: Jan 2013
Posts: 2
Default

Any help would be appreciated
StephenIrwin is offline   Reply With Quote
Old 01-08-2013, 02:57 PM   #3
Tech Elite
 
blis's Avatar
R/C Tech Elite Subscriber
 
Join Date: May 2008
Location: Brisbane
Posts: 3,434
Default

Quote:
Originally Posted by StephenIrwin View Post
Any help would be appreciated
Remove the side belt.
Check rear versus front.
If front is ok and rear is tight
Check clutch and 2 speed
If 2 speed and clutch are free
Check rear pullleys, belts may be too tight or lay shaft.
If rear is still binding.
Remove diffs and check each hub separately..

NOTE: there will always be some play in the wheel hubs, the wheels will have side movement to be free.
__________________
RC Cars: E4/G4/TCX/LAB-C02/T4'15/MM Engines
WEB: Beachmums Racing - MYRCM Race Registration
Media: Amain - RCRacingTV - RedRC - LiveRC - blisx264
blis is offline   Reply With Quote
Old 01-08-2013, 06:37 PM   #4
Tech Addict
 
scary_jerry's Avatar
 
Join Date: May 2011
Location: Utah
Posts: 514
Smile

I was impressed with 'Blis's' attack on the problem and I watched some 'Youtube' videos because I didn't know what an Acme Cyclone was. Some of the videos didn't lead me to believe that that car is much of a 'free-rolling' animal anyway. I just grabbed my brand-new HPI Sprint (belt-drive electric) and tried rolling it and now feel that the belt-drive cars have an inherent resistance that feels like the brake is dragging. Turning one wheel gets the diff. friction involved and pushing the car on a smooth surface got no 'coast' at all.

Good Luck
scary_jerry is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 08:58 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net