R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 06-14-2004, 10:19 AM   #1
Tech Apprentice
 
Join Date: Apr 2004
Location: Oklahoma City
Posts: 55
Send a message via AIM to b4racer
Default Gearing on FT TC3

I got a FT TC3 about a week ago. I raced it this saturday at my local track with a stock motor and it got real hot. Does anyone have some reccomandations on gearing? I ran a Fantom Stock motor (the p2k2 version) with a 28 tooth and it got pretty hot. I got a 27 tooth and it still ran pretty hot. Does anyone else run this motor? If so please let me know what you run. I also need to know what pinon to run for a Fantom 13x2, MHP Pro and a Green Machine 3. Thanks!
b4racer is offline   Reply With Quote
Old 06-14-2004, 10:47 AM   #2
Tech Apprentice
 
Join Date: Dec 2002
Location: The Great White North
Posts: 87
Default

well .. you didnt give any info about the track, size, your setup, spur gear, tire used, or anything like that .. so this is only a guess .. but the p2k2 is a torque based motor .. so your ratio should be a little higher .. and depending on the track it could come off toasty warm .. get a temp gun .. ( they are cheap at Radio Shack Ir Temp Guage like $25 ) and look at teh temps .. indoors I try not to go over 140-150 degrees outdoors .. it really depends on the track temp .. I have pulled off motors that were 180+ and they were still ok.... as far as your gearings for all the motors listed .. I only use the MHS pro .. and I gear that for a roll out of .97 to 1.0 which is about 38/100 with small (2.17") foams ... I am looking for My calculator to give you the formula for roll out and I cant seem to locate it ... but I will post it as soon as I find it ... or somebody else might have it ... for your mod ... start with the TC3 gearing suggestion and then adjust to top out just before the breaking zone of the longest straight at your track .. and try not to go above 15* of timing ...

have fun racing ..

E
roddude65 is offline   Reply With Quote
Old 06-14-2004, 10:55 AM   #3
Suspended
 
Join Date: May 2004
Posts: 90
Default

i would go down to a 25 or 24 and with the mod run like a 20 or 21. the book is way off on gearing unless you are runnin small foams and i mean small like almost to the rim
offroadgod is offline   Reply With Quote
Old 06-14-2004, 11:13 AM   #4
Tech Master
 
Join Date: Nov 2003
Location: Florida
Posts: 1,154
Trader Rating: 1 (100%+)
Default

I run my p2k2's between 28 and 30 depending on the track ....they also get super hot but as long as the lap times are there it's not very important (I've yet to damage one from heat).....make sure the armature is spaced correctly in the magnetic field otherwise it will run hot no matter how you gear it...The limited team fantom motor I have was nearly locked up when I opened it up.......Joe B
__________________
1/8 Scale: Tekno EB-48.2... Tekin RX-8 GEN-2 W/2050kv... Airtronix M11-X Radio... HiTec HS-7954SH Servo...

1/10 Scale: Associated B-5(rear motor)...Tekin RSX Gen-2 W/8.5t... Savox SC-1258-TG Servo
Joe B is offline   Reply With Quote
Old 06-14-2004, 11:16 AM   #5
Tech Master
 
Join Date: Nov 2003
Location: Florida
Posts: 1,154
Trader Rating: 1 (100%+)
Default

Just wanted to say my pinion sizes were for rubber tires
__________________
1/8 Scale: Tekno EB-48.2... Tekin RX-8 GEN-2 W/2050kv... Airtronix M11-X Radio... HiTec HS-7954SH Servo...

1/10 Scale: Associated B-5(rear motor)...Tekin RSX Gen-2 W/8.5t... Savox SC-1258-TG Servo
Joe B is offline   Reply With Quote
Old 06-14-2004, 11:30 AM   #6
Tech Elite
 
kufman's Avatar
 
Join Date: Feb 2004
Location: Elburn, IL
Posts: 3,428
Trader Rating: 6 (100%+)
Default

I run my TC3 with pit shimazu tires on a medium sized carpet track. 48 pitch gears I use around a 72/27 or 72/28 for a p2k and 72/23 or 72/24 for a monster (spur/pinion). The only outdoor track around here is huge and I haven't tried running a stock motor on it, but I would guess I would have to use something like a 72/32 or 72/33 or more for a p2k. For my 19 turn, I use a 72/26 on that track and I am still undergeared. Rubber tires outdoors too, HPI Advan 33r's with Red HPI inserts. I have usually found the that pinion sizes in the manual are a good starting point for larger tracks. Good Luck
kufman is offline   Reply With Quote
Old 06-14-2004, 02:01 PM   #7
Tech Addict
 
crACkeD ChaSsiS's Avatar
 
Join Date: Feb 2002
Location: Getting practice 1/10 stock onroad
Posts: 632
Trader Rating: 4 (100%+)
Send a message via AIM to crACkeD ChaSsiS Send a message via Yahoo to crACkeD ChaSsiS
Default p2k2

hey man i run a p2k2 at my local track and i run the stock spur gear and a 28 pinion. but im gearing down to 27 so maybe my lap times will be quicker. my motor gets hot but at the right temp hot. and its fast man, i pass guys on the straight and in teh corner, but liek i said im gearin down to 27/and i ran a tc3 . my2 cents

Steven
crACkeD ChaSsiS is offline   Reply With Quote
Old 06-14-2004, 03:53 PM   #8
Tech Apprentice
 
Join Date: Apr 2004
Location: Oklahoma City
Posts: 55
Send a message via AIM to b4racer
Default

Sorry about not giving enough info. So here it is

Track Size- Small ( about a 50 foot straight away)
Track Conditions - Outside - Asphalt - Usally Hot
Spur Gear - Stock (which I belive is 72)
Rims - Proline 6 Spoke
Tires - Proline V rage
Batteries (not sure if this matters) 3300 GP sxs (all)
ESC - MTRONICS SV15 (soon to be a GT7 when it comes in the mail)


If thats not enough please post it up here. Everything else on the car (shocks droop etc) is box stock. Thanks!
b4racer is offline   Reply With Quote
Old 06-14-2004, 05:24 PM   #9
Tech Master
 
Join Date: Nov 2003
Location: Florida
Posts: 1,154
Trader Rating: 1 (100%+)
Default

I think Your pretty close B4racer.....the rest is really trial and error......also if you cut and rebuild the motor over time, the ideal pinion size for a given track will sometimes change......a comm with more cuts will yield higher rpm and a big or new comm will lend itself to having more torque....as you mentioned batterys can have a effect also....a very good pack will sometimes allow you to gear up...something also that might help that alot of people don't get the concept of ,is that you dont nesessarialy gear down for torque and up for top end.....its not like a gas motor, an electric motor has a near instant powerband....and that changes everything.....hope this helps some
__________________
1/8 Scale: Tekno EB-48.2... Tekin RX-8 GEN-2 W/2050kv... Airtronix M11-X Radio... HiTec HS-7954SH Servo...

1/10 Scale: Associated B-5(rear motor)...Tekin RSX Gen-2 W/8.5t... Savox SC-1258-TG Servo
Joe B is offline   Reply With Quote
Old 06-14-2004, 06:55 PM   #10
Tech Elite
 
Mike Haynes's Avatar
 
Join Date: Sep 2003
Location: Area 51
Posts: 3,699
Trader Rating: 2 (100%+)
Default

My expirience would say that for a motor and track situation such as yours, a 26 would probably be close to what you want.

If the layout is technical, you will likely benfit from gearing with a smaller pinion to have more accel. out of the corners.
__________________
Team Associated - Reedy Power - Sweep - Protoform - TQ Wire - Lacher paint
Mike Haynes is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Gearing lickashotblaow Electric On-Road 0 07-29-2007 05:47 PM
NeeD Help with gearing please daver1 Electric On-Road 4 07-20-2007 09:12 AM
Gearing for TT-01 tl-01-jhb Rookie Zone 0 11-10-2004 05:35 AM
Need help gearing a TC3 fasda1 Electric On-Road 10 11-06-2004 11:51 AM
Gearing??? mike m Monster Trucks 3 01-24-2004 07:54 PM



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 11:08 PM.


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