R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 07-13-2012, 05:24 PM   #1
Tech Rookie
 
Join Date: Jul 2012
Posts: 6
Default HPI Sport 2 Flux - Belt Sag

So I spun the little gears that the belt drive gears are on so I could get some slack out of the back belt (wore off all the teeth from slipping), but now I can't get the front belt tight enough even with the belt tension.

What next?
SpecialTest is offline   Reply With Quote
Old 07-14-2012, 10:21 AM   #2
Tech Addict
 
Marv's Avatar
 
Join Date: Jul 2011
Location: ORD
Posts: 701
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by SpecialTest View Post
So I spun the little gears that the belt drive gears are on so I could get some slack out of the back belt (wore off all the teeth from slipping), but now I can't get the front belt tight enough even with the belt tension. What next?


The 3 notches in the motor mounts is the HPI provision for 'adjusting/setting' rear belt tension and front belt pretension.

HPI Sport 2 Flux - Belt Sag-belt-eccentrics-copy.jpgHPI Sport 2 Flux - Belt Sag-motor-mounts.jpgHPI Sport 2 Flux - Belt Sag-motor-mounts-copy.jpg

If you relocate the eccentrics to tighten the rear belt it causes slack in the front = the front belt tensioner is virtually useless.

If you relocate the eccentrics to loosen the rear belt it tightens the front belt.

The fix for this is to do some belt tensioner mods.

If you rounded off the teeth on the main shaft pulleys they have to be replaced and check that the teeth on the gear diff pulleys are still intact.

If these are buggered you'll have to replace them as well.

You will need to replace the belts, too.

Proper belt tensions are important - from a wear standpoint and a perfomance stand point.


http://www.youtube.com/watch?v=VHrH9...yer_detailpage

Marv 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 10:35 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