Go Back   oOple.com Forums > Car Talk > X-Factory

Reply
 
Thread Tools Display Modes
  #1  
Old 14-07-2011
leelar's Avatar
leelar leelar is offline
Senior Member
 
Join Date: Feb 2007
Posts: 317
Default HPI 7.5

i have just got 1 of these and i am not sure what gear ratio to run at. i had an lrp vector 6.5 in my X6 on 23/78 and it was getting very very hot i am not sure if this caused my speedo to blow (lrp sphere 2007) but now have a hobbywing 120a just not sure were to start any help please
Reply With Quote
  #2  
Old 14-07-2011
markwilliamson2001's Avatar
markwilliamson2001 markwilliamson2001 is offline
Mad Member
 
Join Date: Apr 2006
Location: Ledbury, Herefordshire
Posts: 1,889
Send a message via MSN to markwilliamson2001
Default

i would run it at 22/78 outside.
If your running indoors drop 2 teeth to start, but keep an eye on temps.

Make sure you open up some vent holes on the bodyshell around the motor, as this really helped lower my temps.

:-)
__________________
:: AE B5MCE - SP 7.5 v3.0 Brushless Motor - Reedy Shorty Lipo - Savox Servo - Spektrum Rx ::
:: Paint By Turnip Paint ::
Reply With Quote
  #3  
Old 14-07-2011
Darren Boyle Darren Boyle is offline
oOple Advertiser
 
Join Date: Jan 2008
Location: Watford, Herts
Posts: 4,501
Default

To be honest none of the team drivers use HPI motors in the car, Ellis runs for Orion and most of the other lads use either Vampire, Viper or Trinity motors. Your best bet may be to ask one of the HPI sponsored drivers what "ratio" they use in their car, then simply apply that to the X6 with closest you can if that helps......
__________________
ORCA - LC RACING - RUDDOG PRODUCTS - JCONCEPTS - ALPHA PLUS - TEKIN RACING - ULTRAPOWER
AVID R/C - VAMPIRE RACING - EXOTEK RACING - LUNSFORD RACING - X-FACTORY - TUNING HAUS - WTF
AME - RAGE R/C - REVOLUTION DESIGN RACING PRODUCTS - McKUNE DESIGN - TEAM AZARASHI
X-PARTZ - PHAT BODIES - RACERS EDGE - RM2 - DIRT RACING PRODUCTS - DMS INSERTZ
TKR GRAPHICS - BF MATERIALS - BATAN - DMS PARTZ - TEAM AJ
Tel : (01923) 816636
Reply With Quote
  #4  
Old 14-07-2011
KJR KJR is offline
Member
 
Join Date: Sep 2010
Posts: 121
Default

I run a HPI 8.5 in my x6 and I set the FDR at the recommended in the manual that came with the motor and it was spot on at a relatively large outdoor track. Motor temp has been coming off at just over 50 degrees with no cooling holes in the shell.
Reply With Quote
  #5  
Old 15-07-2011
YoungChazz's Avatar
YoungChazz YoungChazz is offline
Mad Member
 
Join Date: Mar 2006
Posts: 1,073
Default

We also suggest the E-Speed heatsink & fan mount. New stocks of this great part went out to X Factory UK a few days ago -- they'll have them soon. The fan is included, and it can lower motor temps as much as 10 degrees F.
__________________


Engineering Without Fear
www.XFactoryRC.com
www.facebook.com/XFactoryRC
Reply With Quote
  #6  
Old 15-07-2011
Darren Boyle Darren Boyle is offline
oOple Advertiser
 
Join Date: Jan 2008
Location: Watford, Herts
Posts: 4,501
Default

Quote:
Originally Posted by YoungChazz View Post
We also suggest the E-Speed heatsink & fan mount. New stocks of this great part went out to X Factory UK a few days ago -- they'll have them soon. The fan is included, and it can lower motor temps as much as 10 degrees F.
We already have them in stock Chazz That was just a "top up" order..........
__________________
ORCA - LC RACING - RUDDOG PRODUCTS - JCONCEPTS - ALPHA PLUS - TEKIN RACING - ULTRAPOWER
AVID R/C - VAMPIRE RACING - EXOTEK RACING - LUNSFORD RACING - X-FACTORY - TUNING HAUS - WTF
AME - RAGE R/C - REVOLUTION DESIGN RACING PRODUCTS - McKUNE DESIGN - TEAM AZARASHI
X-PARTZ - PHAT BODIES - RACERS EDGE - RM2 - DIRT RACING PRODUCTS - DMS INSERTZ
TKR GRAPHICS - BF MATERIALS - BATAN - DMS PARTZ - TEAM AJ
Tel : (01923) 816636
Reply With Quote
  #7  
Old 15-07-2011
YoungChazz's Avatar
YoungChazz YoungChazz is offline
Mad Member
 
Join Date: Mar 2006
Posts: 1,073
Default

Darren certainly keeps "on top" of things...
__________________


Engineering Without Fear
www.XFactoryRC.com
www.facebook.com/XFactoryRC
Reply With Quote
  #8  
Old 15-07-2011
leelar's Avatar
leelar leelar is offline
Senior Member
 
Join Date: Feb 2007
Posts: 317
Default

got one last week nice bit of kit
Reply With Quote
  #9  
Old 15-07-2011
Southwell Southwell is offline
*SuPeRsTaR mEmBeR*
 
Join Date: Nov 2005
Location: Basingstoke
Posts: 4,123
Send a message via MSN to Southwell
Default

Start off somewhere around 23/78 and dial in from there. Brushless motors are really sensitive to gearing, just make sure to check temps.
I was running a 6.5 Losi on 24/78, it was getting pretty hot, i dropped it down to 23 and it was quicker and cooler. I tend to find they feel 'soft' after 3-4 mins if you are running too hot. My laptimes never dropped more than a couple of tenths, but you can definately tell it was overheating.
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

Forum Jump


All times are GMT. The time now is 07:41 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
oOple.com