help with Reedy 121 vr

Reply

Old 04-24-2011, 03:42 PM
  #1  
Tech Regular
Thread Starter
iTrader: (2)
 
Join Date: Dec 2010
Posts: 367
Trader Rating: 2 (100%+)
Default help with Reedy 121 vr

I recently bought an RC8B used with a reedy motor. I live in the desert in so Cal and it is already in the 90's temp wise. The car came from washington, I richened it up quite a bit. This thing screams, the bottom end is nuts. The problem I am having is it will run upwards of 280 for a while and seems to love it. It will run li,e this for a bit but the ,ast few minutes of the main it will hit 300 degrees. No performance loss, maybe seems a tad lean on the low end, nice blue smoke. It is warmed up for a while, ran hard and maintains temps, but after 8 minutes of straight racing is when it gets super hot

This might be a dumb question, but is this way too hot or will this motor take it? I was told the motor has 3 gallons on it, but it has good compression and was well taken care of. Starts on the first bump, idles fine etc. As soon as I see the high temps I shut it down, but I'm just wondering

This is my first 8th scale nitro, I've only had RC10GT's but its been a while

I dont want to ruin the motor, but it seems to love the high temps. I could hear it ping before we richened it up, ut now that that its been re-tuned it runs perfect
Hemi Killer is offline  
Reply With Quote
Old 04-24-2011, 03:46 PM
  #2  
Tech Addict
 
808gx7r's Avatar
 
Join Date: Jun 2010
Posts: 721
Default

Originally Posted by Hemi Killer View Post
I recently bought an RC8B used with a reedy motor. I live in the desert in so Cal and it is already in the 90's temp wise. The car came from washington, I richened it up quite a bit. This thing screams, the bottom end is nuts. The problem I am having is it will run upwards of 280 for a while and seems to love it. It will run li,e this for a bit but the ,ast few minutes of the main it will hit 300 degrees. No performance loss, maybe seems a tad lean on the low end, nice blue smoke. It is warmed up for a while, ran hard and maintains temps, but after 8 minutes of straight racing is when it gets super hot

This might be a dumb question, but is this way too hot or will this motor take it? I was told the motor has 3 gallons on it, but it has good compression and was well taken care of. Starts on the first bump, idles fine etc. As soon as I see the high temps I shut it down, but I'm just wondering

This is my first 8th scale nitro, I've only had RC10GT's but its been a while

I dont want to ruin the motor, but it seems to love the high temps. I could hear it ping before we richened it up, ut now that that its been re-tuned it runs perfect
richen both needles slightly. hsn by only like 1/36 of a turn.
808gx7r is offline  
Reply With Quote
Old 04-24-2011, 03:46 PM
  #3  
Tech Master
iTrader: (74)
 
ehames005's Avatar
 
Join Date: Nov 2008
Location: Phoenix, Az
Posts: 1,614
Trader Rating: 74 (100%+)
Default

The Reedy likes to run hot. My Reedy's usually ran near 260-280 with great power.
ehames005 is offline  
Reply With Quote
Old 04-24-2011, 03:54 PM
  #4  
Tech Regular
Thread Starter
iTrader: (2)
 
Join Date: Dec 2010
Posts: 367
Trader Rating: 2 (100%+)
Default

Someone at the track suggested something may be binding but this thing is as Smooth as butter

If the clutch shoes are worn could this cause higher temps?

I am going to go through the entire car while our track is closed for a couple weeks, I'm just trying to learn what to watch out for
Hemi Killer is offline  
Reply With Quote
Old 04-24-2011, 03:58 PM
  #5  
Tech Addict
 
808gx7r's Avatar
 
Join Date: Jun 2010
Posts: 721
Default

Originally Posted by Hemi Killer View Post
Someone at the track suggested something may be binding but this thing is as Smooth as butter

If the clutch shoes are worn could this cause higher temps?

I am going to go through the entire car while our track is closed for a couple weeks, I'm just trying to learn what to watch out for
clutch bearings, overtighten'd on the clutch bell end incorrect shimming at end of crank shaft for min play. a bad bearing anywhere in the car can cause temps to rise
808gx7r is offline  
Reply With Quote
Old 04-24-2011, 04:19 PM
  #6  
Tech Regular
Thread Starter
iTrader: (2)
 
Join Date: Dec 2010
Posts: 367
Trader Rating: 2 (100%+)
Default

So basically I need to go through the entire car, make sure its all fresh, then evaluate. My target temp should be 280 or below?
Hemi Killer is offline  
Reply With Quote
Old 04-24-2011, 04:25 PM
  #7  
Tech Addict
 
808gx7r's Avatar
 
Join Date: Jun 2010
Posts: 721
Default

Originally Posted by Hemi Killer View Post
So basically I need to go through the entire car, make sure its all fresh, then evaluate. My target temp should be 280 or below?
hard to say what a target temp should be, but alot of reedys run hot.
808gx7r is offline  
Reply With Quote
Old 04-24-2011, 04:37 PM
  #8  
Tech Regular
Thread Starter
iTrader: (2)
 
Join Date: Dec 2010
Posts: 367
Trader Rating: 2 (100%+)
Default

K, thanks. I'm gonna tear it down and check it out
Hemi Killer is offline  
Reply With Quote
Old 04-24-2011, 08:29 PM
  #9  
Tech Regular
Thread Starter
iTrader: (2)
 
Join Date: Dec 2010
Posts: 367
Trader Rating: 2 (100%+)
Default

found the problem, HA. I have put over 1/2 gallon on the car since I got it. I was expecting to make some repairs, so I thought I'd just drive it for a bit then tear it down. I honestly dont know if it was like this when I got it or if I did this.

im just glad it was easy to find






Hemi Killer is offline  
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service