R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 05-29-2010, 11:18 PM   #1
Tech Addict
 
Fatam's Avatar
 
Join Date: Apr 2010
Location: Iowa
Posts: 534
Trader Rating: 6 (100%+)
Angry Blitz spur gear help

I have a blitz with a cc 4600kv. I run 7.4 lipo, and I keep melting spurs. I went through 5 this week. I've tried 88 and 82 tooth, I've also tried 14, 18, and 20 tooth pinions. I've also had the tech at the lhs look at all of them and even put some on himself. What is going on? Temps seem to be a little high when I run the 20tooth so I mainly run the 14 or 18. Any help would be great. Anyone else having this problem?
Fatam is offline   Reply With Quote
Old 05-29-2010, 11:45 PM   #2
Tech Apprentice
 
Join Date: May 2010
Location: Australia
Posts: 81
Default

What do you mean by melting spurs?. If your talking about the spur gear it self getting so hot that it softens & then the pinion gear strips it then may
be your slipper clutch needs to be tighter,A loose slipper clutch could cause the spur to over heat, As your running a power full system.

1) Tighten slipper clutch

2) Try largest spur & smallest pinion gear check temps

3) If temps are good fit the next size up pinion gear until you have good speed & good temps, Adjust gearing to suite I mean.

Castle creations have gearing charts aswell. Hope that helped.
laferlita2007 is offline   Reply With Quote
Old 05-30-2010, 12:40 AM   #3
Tech Adept
 
Join Date: Apr 2010
Posts: 202
Default

i have done this twice. both times i set the mesh tighter then i usually do. maybe your having the same issues. my set up was a mamba max pro and a mamba 7700kv
__________________
My Garage:
HPI Blitz
1/16 Mini T Short course conversion
sancho1388 is offline   Reply With Quote
Old 05-30-2010, 03:39 AM   #4
Tech Rookie
 
Join Date: May 2010
Posts: 18
Default

Try tightening the slipper all the way down then gear as low as you can and run it and try that.

Next thing i would check is to see if there is any binding in the drivetrain as this could cause excess friction which will produce heat and could be causing this issue
SgtCuts is offline   Reply With Quote
Old 05-30-2010, 06:16 AM   #5
Tech Adept
 
bllski's Avatar
 
Join Date: Feb 2009
Posts: 169
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by sancho1388 View Post
i have done this twice. both times i set the mesh tighter then i usually do. maybe your having the same issues. my set up was a mamba max pro and a mamba 7700kv
I ran for 2 months with a 12t titan and never had any issues. I put in a old 8.5 turn brushless and went through 3 gears in 2 days. The stock slipper wobbles the spur bad and you have to be so careful to align it correctly. That being said I was careful and still shredded the gears. I have heard that the optional lightweight slipper stops the wobble as it has a different design and and is much easier to change spur gears.http://www.amainhobbies.com/product_...er-Carrier-Set

The tendency for the gears to wobble is the only thing I can think of cause like you my mesh was perfect was not over geared maybe the extra power is causing the spur to flex or twist under the slipper.
__________________
AE RC8e
HPI Blitz
bllski is offline   Reply With Quote
Old 05-30-2010, 06:19 AM   #6
Tech Adept
 
bllski's Avatar
 
Join Date: Feb 2009
Posts: 169
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by SgtCuts View Post
Try tightening the slipper all the way down then gear as low as you can and run it and try that.

Next thing i would check is to see if there is any binding in the drivetrain as this could cause excess friction which will produce heat and could be causing this issue
If you tighten the slipper all the way down you will tear up the outdrive cups on the transmission they are a weak point.
__________________
AE RC8e
HPI Blitz
bllski is offline   Reply With Quote
Old 05-30-2010, 07:06 AM   #7
Tech Master
 
koopesv's Avatar
 
Join Date: Jan 2010
Location: A main
Posts: 1,265
Trader Rating: 18 (95%+)
Default

I switched my slipper to the slipper from my e-firestorm and I use AE spurs and pads. The spur need a little modding but no wobble. I prefer the e-firestorm slipper better, ive had no problem since i changed it.
__________________
Durango - Speed Passion - Trinity
Gforce Hobbies Raceway
Urban Heat Racing
koopesv is offline   Reply With Quote
Old 05-30-2010, 07:14 AM   #8
Tech Fanatic
 
tmaxx26power's Avatar
 
Join Date: May 2005
Location: Nebraska
Posts: 754
Trader Rating: 39 (100%+)
Default

The "floating" spur won't cause the spur to melt if the mesh is set correctly. However a loose slipper adjustment will. All the friction from a slipper set to loose causes major friction which turns into heat, melting the spur gear. I ran a Blitz with a MMPro 5700KV combo for the whole winter indoor season and never had to replace the stock spur. In fact I have had 4 Blitz trucks and never had a spur go bad no matter what power combo I use. It all comes down to proper adjustment.
__________________
Kyosho RB6 Stock Buggy
Kyosho ZX6 Mod 4wd Buggy
Kyosho SC6 Pro2
tmaxx26power is offline   Reply With Quote
Old 05-30-2010, 03:38 PM   #9
Tech Addict
 
Fatam's Avatar
 
Join Date: Apr 2010
Location: Iowa
Posts: 534
Trader Rating: 6 (100%+)
Default

I do have a wobble issue. I ordered the firestorm one and hope that helps.
Fatam is offline   Reply With Quote
Old 05-30-2010, 07:04 PM   #10
Tech Adept
 
bllski's Avatar
 
Join Date: Feb 2009
Posts: 169
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by tmaxx26power View Post
The "floating" spur won't cause the spur to melt if the mesh is set correctly. However a loose slipper adjustment will. All the friction from a slipper set to loose causes major friction which turns into heat, melting the spur gear.
think I might have had a heat issue the pinion cut through my spur like it was butter, guess the slipper could have heated it up. I ran that motor in an SC10 all last year same amount of slip and never had an issue. I guess the Blitz slipper pad sends too much heat into the plastic spur.
__________________
AE RC8e
HPI Blitz
bllski is offline   Reply With Quote
Old 06-01-2010, 06:25 AM   #11
Tech Champion
 
Join Date: Sep 2002
Location: Stokes, NC
Posts: 6,495
Trader Rating: 74 (100%+)
Default

Quote:
Originally Posted by Fatam View Post
I have a blitz with a cc 4600kv. I run 7.4 lipo, and I keep melting spurs. I went through 5 this week. I've tried 88 and 82 tooth, I've also tried 14, 18, and 20 tooth pinions. I've also had the tech at the lhs look at all of them and even put some on himself. What is going on? Temps seem to be a little high when I run the 20tooth so I mainly run the 14 or 18. Any help would be great. Anyone else having this problem?
You could always try this for a permanent solution.
FS: Custom Blitz layshaft
__________________
Team and Sales Manager for USRC Imports, home of Sworkz! Looking for drivers for 2017-2018, KingMax Servos www.kingmaxhobby.com Gens Ace www.gensace.com, MIP www.miponline.com,Schelle , WWW. Schelleracing.com, Slavich Designs, GARCIA GRAPHIX

CHECK OUT GARCIA GRAPHIX ON FACEBOOK -LOOKING FOR 2017 TEAM DRIVER'S!
Raul Garcia is offline   Reply With Quote
Old 06-01-2010, 08:25 PM   #12
Tech Master
 
RC-Crazy's Avatar
 
Join Date: Apr 2009
Location: Bellevue, WA.
Posts: 1,463
Trader Rating: 55 (100%+)
Default

you might have a damaged pinion gear.... check it out.
__________________
Go Fast or Go Home.
RC-Crazy is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
HPI Blitz Thread RCZILLA Electric Off-Road 5369 10-19-2016 10:51 AM
The kinder, gentler broken Blitz ESE thread chiro972 Electric Off-Road 56 06-16-2010 04:43 AM
slash help bearman71 Electric Off-Road 11 03-18-2010 02:43 PM


Tags
blitz, spur


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 01:53 AM.


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