Notices
HPI Monster Truck Forum Talk about HPI monster trucks here. The infamous Savage 21, SS, .25 or any other HPI MT. You can optionally discuss HPI in our general MT discussion forum if you prefer.

melted spur gear

Old 05-30-2006, 04:02 PM
  #1  
1970nova
Junior Member
Thread Starter
 
Join Date: May 2006
Location: burlington, NC
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default melted spur gear

sorry if this has been asked but keep melting spur gear on sav x. Gone thru 1/2 doz. mesh checks fine when put back,bearings good on clutch bell,cleaned c/b and clutch shoe,even scuffed both c/b & shoes to help any slippage,but checked c/b temp & it over 200 any advise and help greatly thanked. also would it be wise to upgrade clutch shoe since im running the factory shoes?
Old 05-30-2006, 04:21 PM
  #2  
Gravrober
Senior Member
 
Gravrober's Avatar
 
Join Date: May 2006
Location: West coast, MI
Posts: 344
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

can you tighten your slipper down tight on the X? if you can tighten it down and havent yet, you should try to run one like that just to see.
Old 05-30-2006, 04:42 PM
  #3  
1970nova
Junior Member
Thread Starter
 
Join Date: May 2006
Location: burlington, NC
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

spur gear tightened all the way and have even tried with spur gear nut backed off1/4-1/2 turn as it says in book. still melting spur. Last gear i ran lasted about 5-10 min before melting. wasnt driving hard either. could feel heat coming off c/b that when i temped it and it showed 200 on temp gauge.
Old 05-30-2006, 04:53 PM
  #4  
Gravrober
Senior Member
 
Gravrober's Avatar
 
Join Date: May 2006
Location: West coast, MI
Posts: 344
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

only other thing than good mesh, Id switch to aluminum clutch shoes if you havent yet.
Old 05-30-2006, 04:53 PM
  #5  
Chronic
Senior Member
 
Join Date: Dec 2005
Location: Southeastern, NC
Posts: 2,997
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

Get a set of aluminum clutch shoes. The stockers are slipping and building heat, that in turn warms up the spur gear and softens it enough that the teeth just rip off of it.

Go ahead and get two new sets of clutchbell bearings too. The heat has probably already sent yours on a path to destruction, and you should always keep a spare set on hand.
Old 05-30-2006, 04:57 PM
  #6  
46u
Senior Member
My Feedback: (3)
 
46u's Avatar
 
Join Date: Jan 2005
Location: Macon, GA
Posts: 22,095
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

The only spur gear I ever had a problem with was when I was breaking in my engine and the CB got hotter then my engine and melted the spur do to the sorry stock clutch shoes slipping. I put alloy clutch shoes in and now in about 3 gallons have not had a problem since.
Old 05-30-2006, 05:02 PM
  #7  
Gravrober
Senior Member
 
Gravrober's Avatar
 
Join Date: May 2006
Location: West coast, MI
Posts: 344
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

Is there an echo in here?

excellent point on the bearings.
Old 05-30-2006, 06:22 PM
  #8  
1970nova
Junior Member
Thread Starter
 
Join Date: May 2006
Location: burlington, NC
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

any good suggestions on whether hpi has any or what brand to go with and does anyone know if there are any such thing as carbon or carbon fiber clutch shoes
Old 05-30-2006, 06:52 PM
  #9  
46u
Senior Member
My Feedback: (3)
 
46u's Avatar
 
Join Date: Jan 2005
Location: Macon, GA
Posts: 22,095
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear


ORIGINAL: Graverobber

Is there an echo in here?
Yes there is an echo in here to help confirm what others said.
Old 05-30-2006, 08:56 PM
  #10  
1970nova
Junior Member
Thread Starter
 
Join Date: May 2006
Location: burlington, NC
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

anyone know any good brand of alum clutch shoesor if there r any such thing as carbon or carbon fiber shoes and does the stock c/b need to be changed?
Old 05-30-2006, 09:01 PM
  #11  
Chronic
Senior Member
 
Join Date: Dec 2005
Location: Southeastern, NC
Posts: 2,997
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

The stock shoes are the carbon ones. I'm using Team Losi LST2 shoes and they are fine so far. The shoes, springs, and washers came together for $20 from the LHS and they work with the stock nut.
Old 05-30-2006, 09:03 PM
  #12  
46u
Senior Member
My Feedback: (3)
 
46u's Avatar
 
Join Date: Jan 2005
Location: Macon, GA
Posts: 22,095
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

I am running Nova alloy shoes with the stock CB but have been told you need to run a harden CB. I have around 3 gallons on mine since I put the alloy shoes in it and I probably need to check the shoes and CB which I have a harden one to put on it now.
Here is a link to Nova.
http://www.novarcproducts.com/products.html
Old 05-31-2006, 06:29 AM
  #13  
Cyberfyn
Senior Member
 
Cyberfyn's Avatar
 
Join Date: Feb 2003
Location: Nottingham, UNITED KINGDOM
Posts: 1,009
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

I melted my first spur on my 4.6. But after tightening the slipper right up and drilling 6 2mm cooling hols in the end on the clutch bell I've had no problems in 2 gallons.

Ian F.
Old 05-31-2006, 12:06 PM
  #14  
HeadRush ROB.21
Banned
 
Join Date: Mar 2006
Location: pasadena, ME
Posts: 310
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear


ORIGINAL: 1970nova

sorry if this has been asked but keep melting spur gear on sav x. Gone thru 1/2 doz. mesh checks fine when put back,bearings good on clutch bell,cleaned c/b and clutch shoe,even scuffed both c/b & shoes to help any slippage,but checked c/b temp & it over 200 any advise and help greatly thanked. also would it be wise to upgrade clutch shoe since im running the factory shoes?
the only thing i can think of is the gear mesh was a little to tight and u where running it hard cause when i very first got my 4.6 i wanted to try some rock crawling before i did my race hop-ups and i was running it hard and i knew my gear mesh was already a lil to ttight and by the end of the 2nd tank the gear was melted as can be
Old 06-03-2006, 09:33 PM
  #15  
1970nova
Junior Member
Thread Starter
 
Join Date: May 2006
Location: burlington, NC
Posts: 7
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

hey, just wanted to thank yall for the melted spur gear issue. went to my lhs in archdale and got some aluminum clutch shoes. Ran almost a gal thru. No melted spur gear yet and hope no more any time so or ever. thanks again for the help
Old 06-03-2006, 10:43 PM
  #16  
46u
Senior Member
My Feedback: (3)
 
46u's Avatar
 
Join Date: Jan 2005
Location: Macon, GA
Posts: 22,095
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

Good to hear it and you are welcome
Old 06-05-2006, 01:21 PM
  #17  
HeadRush ROB.21
Banned
 
Join Date: Mar 2006
Location: pasadena, ME
Posts: 310
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

glad its working and your welcome[8D]
Old 06-05-2006, 06:13 PM
  #18  
mt2DirtMan
Member
 
Join Date: Dec 2005
Location: Rochester, IN
Posts: 78
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

Heres one for you guys. I just upgraded my Savage 21 from the 2 shoe clutch to the 3 shoe clutch and Im still melting spurs. is there such a thing as a bad or worn cb? Heck, these BRAND new shoes should not be slipping. my plan is a vented clutchbell and some new bearings. Then if that dont work, I'll go alum. shoes. Sound good? the only reason I dont wqanna do aluminum shoes yet is bc I JUST put these on and not even a tank thourgh it.
Old 06-05-2006, 11:20 PM
  #19  
46u
Senior Member
My Feedback: (3)
 
46u's Avatar
 
Join Date: Jan 2005
Location: Macon, GA
Posts: 22,095
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear


ORIGINAL: mt2DirtMan

Heres one for you guys. I just upgraded my Savage 21 from the 2 shoe clutch to the 3 shoe clutch and Im still melting spurs. is there such a thing as a bad or worn cb? Heck, these BRAND new shoes should not be slipping. my plan is a vented clutchbell and some new bearings. Then if that dont work, I'll go alum. shoes. Sound good? the only reason I dont wqanna do aluminum shoes yet is bc I JUST put these on and not even a tank thourgh it.
Read my above post to see that the stock ones are not very good! Mine where all so new but had problems untill I got aluminum!
Old 06-11-2006, 08:37 PM
  #20  
SmoothInc
Senior Member
 
Join Date: Aug 2005
Location: Palmdale, CA
Posts: 212
Likes: 0
Received 0 Likes on 0 Posts
Default RE: melted spur gear

I put an STS. 28 in my savage and had a little bit of slippage issues with the stock clutch shoes switched umm over to mugen aluminum three shoe and no problems so far by the way im still running stock clutrch bell and springs.

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


Thread Tools
Search this Thread

Contact Us - Manage Preferences Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.