R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 11-07-2011, 01:37 PM   #1
Tech Addict
 
Join Date: Apr 2009
Posts: 703
Trader Rating: 9 (100%+)
Default 17.5 2wd buggy blinky gearing

I am going to run blinky 17.5 for the first time and have no idea where to start with gearing or the timing in the motor. I know everyone seems to be going back to blinky but I have only raced in the tekin days so this is new to me. I have a duo 3 and a tekin speedo with a b4.1.

Any help is appreciated!
gguertin145 is offline   Reply With Quote
Old 11-07-2011, 01:54 PM   #2
Super Moderator
 
Cpt.America's Avatar
 
Join Date: Mar 2009
Location: NW Washington State
Posts: 9,315
Trader Rating: 51 (100%+)
Default

Quote:
Originally Posted by gguertin145 View Post
I am going to run blinky 17.5 for the first time and have no idea where to start with gearing or the timing in the motor. I know everyone seems to be going back to blinky but I have only raced in the tekin days so this is new to me. I have a duo 3 and a tekin speedo with a b4.1.

Any help is appreciated!
Piece of cake! This is the sweet spot for blinky mode with the D3

78 spur
30 pinion (or 31)
max endbell timing
__________________
- Brandon Collins -

A big thanks to my sponsors:
- Fantom Racing - www.fantomracing.com -
- RCSpecialties - www.rcspeedshop.net -
- Fusion Graphix - www.fusiongraphixx.com -
Cpt.America is offline   Reply With Quote
Old 11-07-2011, 02:14 PM   #3
Tech Addict
 
Join Date: Apr 2009
Posts: 703
Trader Rating: 9 (100%+)
Default

Nice! I was hearing a 35/72 and thought that seemed high for a gearing.

Thanks for the help! I will have to test this weekend and see how it goes.
gguertin145 is offline   Reply With Quote
Old 11-07-2011, 02:19 PM   #4
Super Moderator
 
Cpt.America's Avatar
 
Join Date: Mar 2009
Location: NW Washington State
Posts: 9,315
Trader Rating: 51 (100%+)
Default

Quote:
Originally Posted by gguertin145 View Post
Nice! I was hearing a 35/72 and thought that seemed high for a gearing.

Thanks for the help! I will have to test this weekend and see how it goes.
That is closer to what you would run if you were running 0 endbell timing, but we have found that the D3s run REALLY strong geared a bit lower, with the endbell timing turned up. It's my opinion that most people over-gear their 17.5s... usually the buggy is still increasing in speed before the car hits the end of the straight, which means the gearing is too tall. You want to gear the car so it reaches max RPM before the spot on the straight where you would brake or let-off.

(start with the 31 pinion, and keep an eye on temps... the D3s should run really cool, somewhere around 110-120 after 10 minutes)
__________________
- Brandon Collins -

A big thanks to my sponsors:
- Fantom Racing - www.fantomracing.com -
- RCSpecialties - www.rcspeedshop.net -
- Fusion Graphix - www.fusiongraphixx.com -
Cpt.America is offline   Reply With Quote
Old 11-07-2011, 02:23 PM   #5
Tech Addict
 
Join Date: Apr 2009
Posts: 703
Trader Rating: 9 (100%+)
Default

I have someone I race with running a duo2 would it change much for him? I thought I remember the duo 2 should be geared a tooth lower is that right?
gguertin145 is offline   Reply With Quote
Old 11-07-2011, 02:45 PM   #6
Tech Champion
 
Davidka's Avatar
 
Join Date: Oct 2004
Posts: 8,464
Trader Rating: 63 (100%+)
Default

Two things to consider: 1. Don't use temp as a measure of performance. This is where the super high gearing trend comes from. Because of motor heat fade the cars run like they did back in the 1400mah battery days. 2. To Capt.'s point, straightaway speed is usually not very important to a good lap time, acceleration is more so, as is the ability to clear jumps if there are any difficult ones.
__________________
"I have no idea what you're talking about, so here's a bunny with a pancake on it's head."

In mind and body, we're all heading towards old age. It is slower to go by bike.
Davidka is offline   Reply With Quote
Old 11-07-2011, 02:49 PM   #7
Super Moderator
 
Cpt.America's Avatar
 
Join Date: Mar 2009
Location: NW Washington State
Posts: 9,315
Trader Rating: 51 (100%+)
Default

Quote:
Originally Posted by gguertin145 View Post
I have someone I race with running a duo2 would it change much for him? I thought I remember the duo 2 should be geared a tooth lower is that right?
Id start him in the same place. It's just a starting place... you will want to see how the motor "feels" on all the various places around the track to see if you need to gear up a tad, or down a tad with the motor.
__________________
- Brandon Collins -

A big thanks to my sponsors:
- Fantom Racing - www.fantomracing.com -
- RCSpecialties - www.rcspeedshop.net -
- Fusion Graphix - www.fusiongraphixx.com -
Cpt.America is offline   Reply With Quote
Old 11-07-2011, 02:52 PM   #8
Tech Addict
 
Join Date: Apr 2009
Posts: 703
Trader Rating: 9 (100%+)
Default

Thanks for the help guys! I think you have me going in a direction I will like better. The little bit I played with the higher gearing the car felt very sluggish and had 0 punch.
gguertin145 is offline   Reply With Quote
Sponsored Links
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Viper RC Solutions Thread - A New Line of Innovative Power systems! mini-dub Electric Off-Road 10294 Yesterday 11:51 AM
Ryde it like you stole it: the Ryde Drivers thread. old_skoolie Australian Racing 20923 04-16-2014 11:36 PM
RC10B4.1 FT/WC Wildcat1971 Electric Off-Road 28705 03-27-2014 03:07 PM


All times are GMT -8. It is currently 10:52 PM.



SEO by vBSEO 3.5.0