R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 06-15-2007, 06:45 PM   #1
Tech Rookie
 
Join Date: Dec 2005
Posts: 1
T2 '007 - Brushless 13.5 - Not enough gear

Running a 13.5 in Pro-Stock Rubber Tire asphalt at out track requires a rollout of about 42mm-43mm , maybe even 44mm.

The difficulty with the Xray T2 '007 is that I can't find a small enough spur gear (with larger holes around the outside to access motor screw) to get geared any higher than 38.6mm. With a 112 and a 38, the motor can't move any farther. Thus the need for a smaller spur! I don't think a 108 will even cut it!

Does anyone, preferably someone experiencing this same problem, know of any manufacturer that makes spurs around 96 with the holes all around the outside that will fit the '007?
Sponse is offline   Reply With Quote
Old 06-15-2007, 06:57 PM   #2
Tech Champion
 
Join Date: Oct 2005
Location: Cincinnati, OH
Posts: 5,360
Trader Rating: 38 (100%+)
Default

Will these work?

http://www.robinsonracing.com/catalo...pur.html#super
or8ital is offline   Reply With Quote
Old 06-15-2007, 07:16 PM   #3
Tech Elite
 
ottoman's Avatar
R/C Tech Charter Subscriber
 
Join Date: Oct 2001
Location: wisconsin
Posts: 2,761
Trader Rating: 13 (100%+)
Default

I run a PRS 100 tooth spur with no problem
ottoman is offline   Reply With Quote
Old 06-16-2007, 08:26 AM   #4
Tech Addict
 
Join Date: Dec 2004
Location: MI
Posts: 574
Trader Rating: 2 (100%+)
Default

The problem with using too small spur is adjusting the gearmesh wont be possible because the spur will cover the inside motor mount screw on the 007. That is why not every type of spurs would do the job. I tried an older type of 96 tooth kimbrough and it was a nightmare.

Try Robinson or RW's Supalite spurs they work fine. They have the holes which allows to access to the mount screw just like the xray ones. I'm not sure that you can go as low as 96 teeth though...

Try this: http://www.ampdraw.com/browse.php?ty...obinson%20spur
cvt01 is offline   Reply With Quote
Old 06-16-2007, 11:11 PM   #5
Tech Addict
 
Join Date: Apr 2005
Location: north-west Indiana
Posts: 746
Trader Rating: 18 (100%+)
Default

I run a 104t 64p prs spur gear with a 40t pinion. If you use socket screws for the motor, you can get a ball end tip in there to adjust. Yes it is a pain.

The other thing you can do: take the top decks off, and take the layshaft off. Guess where you need the motor then put it there, tighten the screws so it won't move on its own, but will with a little help from you. Put the layshaft back in and adjust the gear mesh, then take it back out and tighten the motor screws completely, then reassemble.

Yes, it is a pain, but where there is a will there is a way.
trilerian is offline   Reply With Quote
Old 06-17-2007, 02:48 AM   #6
Tech Apprentice
 
Join Date: May 2005
Location: Schiedam/Netherlands
Posts: 80
Default

Quote:
Originally Posted by trilerian View Post
I run a 104t 64p prs spur gear with a 40t pinion. If you use socket screws for the motor, you can get a ball end tip in there to adjust. Yes it is a pain.

The other thing you can do: take the top decks off, and take the layshaft off. Guess where you need the motor then put it there, tighten the screws so it won't move on its own, but will with a little help from you. Put the layshaft back in and adjust the gear mesh, then take it back out and tighten the motor screws completely, then reassemble.

Yes, it is a pain, but where there is a will there is a way.
simpler to put the motor in and tighten one screw when it's meshed with the spur. Then take the layshaft off and tighten the other screw.

In Holland with the 5 cell rule in 19 turn class we all race gearratio's like 3.5. We use 48 pitch without these problems. ( 34 or 35 x 72 )
Frans H is offline   Reply With Quote
Old 06-17-2007, 05:32 AM   #7
Tech Initiate
 
Ztrezz's Avatar
 
Join Date: May 2004
Location: The Netherlands
Posts: 47
Default

I am a racer in the standard class in Holland (with Team Orion 19T V2 motor), and I am on a gear ratio of 3.6 - 3.8. And I use spurs from Robitronic (eg Delrin), because I can mount the motor and still be able to adjust it through the holes of this spur. (spur 75 and pinion 34 , which is almost the biggest pinion you can use, because of the upperdeck).
Ztrezz is offline   Reply With Quote
Old 06-17-2007, 07:31 AM   #8
Tech Addict
 
Join Date: Dec 2004
Location: MI
Posts: 574
Trader Rating: 2 (100%+)
Default

The RW Supalite has very similar design to the robitronic. Also the robinsons have the holes in the right place. These two is available in the US (tower, nexus, ampdraw) the robitronic would be a special order in a good hobby shop I guess...
cvt01 is offline   Reply With Quote
Old 06-17-2007, 11:39 AM   #9
Shop Owner
 
nnick's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2001
Location: Cheapest prices in Europe ;)
Posts: 1,342
Trader Rating: 1 (100%+)
Send a message via ICQ to nnick Send a message via MSN to nnick Send a message via Yahoo to nnick Send a message via Skype™ to nnick
Default

Actually the RW is Robitronic since RW builts them Same goes with pinions
__________________
Nikolakopoulos Nick
RC RING

The #1 source for all your electric needs www.rcring.eu

Enjoy RCing....
R/C Tech #82
IRT #123

Don't practice until you get it right. Practice until you can't get it wrong

Team Xray T4'17, Team Xray X10'18, TOP Racing Rebel
nnick is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
10.5 brushless optimal gear ratio shadowless Electric On-Road 1 07-15-2008 09:06 PM
6.5t brushless gear ratio LOSI123 Electric On-Road 3 11-09-2007 01:41 PM
New to brushless need gear ratio Got Xray? Rookie Zone 2 02-04-2006 03:41 AM
Schulze brushless, radio gear & bateries Longbeach Super Australia For Sale/Trade 0 01-31-2006 03:53 AM
schulze brushless @ radio gear Longbeach Super Australia For Sale/Trade 0 01-04-2006 03:15 AM



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 01:25 AM.


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