R/C Tech Forums

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

Thread Tools Search this Thread
Old 02-01-2009, 12:22 AM   #16
Tech Regular
MattWebb's Avatar
Join Date: Jan 2006
Location: Perth, Western Australia
Posts: 320
Trader Rating: 3 (100%+)

A frustrating thread to read.

Its gone from no sensor wire and smoke, to a pinion and spur problem.
www.teamadrenaline.net - your home for West Australia r/c race results and gossip
MattWebb is offline   Reply With Quote
Old 02-11-2009, 05:49 PM   #17
Tech Regular
fasteddie2's Avatar
Join Date: Feb 2007
Posts: 446
Trader Rating: 30 (100%+)

ok jake i had the same problem. I installed a gtb with a 17.5 in my bk2 and went up 5 on my pinion(22) with the stock spur gear(78). It was the slowest buggy ever! I call my lhs and the told me that i needed an 76 spur with an 39 pinion and alot of people are running with 43 pinion! WOW so for me to install this combo i had to make the slots for the motor a little longer so it would fit.
fasteddie2 is offline   Reply With Quote
Old 02-11-2009, 07:37 PM   #18
Tech Master
JeromeK99's Avatar
Join Date: Jun 2008
Location: Loma Linda, CA - USA
Posts: 1,137
Trader Rating: 3 (100%+)

Sounds like it turned out to be a gearing issue... The 17.5 and stock 27t brushed motors are geared very very differently..

With a 27t off-road you typically gear from a 9 FDR to maybe 10ish... with a 17.5 you are looking at 5 to 6ish FDR depending on the track...

Brushless motors have to get up to speed before the power-band kicks in..

Have fun!

JeromeK99 is offline   Reply With Quote

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 04:56 PM.

Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net