Go Back  R/C Tech Forums > General Forums > Rookie Zone
Need Advice for my Cat K1 >

Need Advice for my Cat K1

Like Tree2Likes
  • 1 Post By Mahjik
  • 1 Post By Sir 51D3WAYS

Need Advice for my Cat K1

Old 05-31-2020, 01:21 AM
  #1  
Tech Rookie
Thread Starter
 
Join Date: Apr 2020
Posts: 11
Default Need Advice for my Cat K1

Recently bought a second hand Cat K1 with most of the upgrades to K1 Aero done. I have 2 problems :

1. A lot of the time when going over jumps it drops the rear end and spins 180 degrees and usually lands on its roof.

2. What is the result of turning my motor degrees from 30deg to 25deg its a Zombies 13,5T.

Any help would be greatly appreciated as I m returning to the sport after a 25 year absence.
Johnnymac1965 is offline  
Old 05-31-2020, 03:38 AM
  #2  
Tech Elite
 
Sir 51D3WAYS's Avatar
 
Join Date: Jun 2011
Location: Stuck in urban hell
Posts: 3,188
Default

1. Your question is unclear.... How does it spin 180? How does it land on its roof by the rear end dropping?!

When jumping, you should accelerate up the face of the jump and maintain a fixed throttle position, (whatever you left the jump with) and try and land with the same throttle position. Resist the temptation to lift off the throttle, only doing so gently to bring the nose down if at all necessary.

2. Reducing motor timing will reduce speed and temperatures. Increasing motor timing will increase speed and temperatures. A reduction of 5 degrees will only generally be small effect however. 30 deg should be fine though.
Sir 51D3WAYS is offline  
Old 05-31-2020, 08:27 AM
  #3  
Tech Regular
iTrader: (2)
 
Join Date: Jan 2018
Location: Kansas City, MO
Posts: 441
Trader Rating: 2 (100%+)
Default

This isn't the most technical article, but scroll down to where it talks about "Techniques for jumping and landing":

https://racingrccar.com/how-to-jump/

Basically, you need to learn how to use the throttle to control the car in the air.
Johnnymac1965 likes this.
Mahjik is offline  
Old 05-31-2020, 09:08 AM
  #4  
Tech Rookie
Thread Starter
 
Join Date: Apr 2020
Posts: 11
Default

Thanks for the help, I tend to take the throttle off once the car starts the jump, you have given me something to practice.
Johnnymac1965 is offline  
Old 05-31-2020, 09:09 AM
  #5  
Tech Rookie
Thread Starter
 
Join Date: Apr 2020
Posts: 11
Default

Thanks for me the article has been helpful, I guess a lot of practice is in order
Johnnymac1965 is offline  
Old 05-31-2020, 10:05 AM
  #6  
Tech Elite
 
Sir 51D3WAYS's Avatar
 
Join Date: Jun 2011
Location: Stuck in urban hell
Posts: 3,188
Default

Originally Posted by Johnnymac1965 View Post
Thanks for the help, I tend to take the throttle off once the car starts the jump, you have given me something to practice.
Don't worry, it took me a couple of years and loads of broken parts to get the hang of it.....
Johnnymac1965 likes this.
Sir 51D3WAYS is offline  
Old 05-31-2020, 12:53 PM
  #7  
Tech Elite
 
the rc guy's Avatar
 
Join Date: Aug 2016
Location: Detroit
Posts: 2,411
Default

a 4 wd when driven correctly. you should be able to make a jump then hit brakes and drop your car almost strength down on any jump.
the rc guy is offline  
Old 05-31-2020, 05:01 PM
  #8  
Tech Rookie
Thread Starter
 
Join Date: Apr 2020
Posts: 11
Default

Originally Posted by Sir 51D3WAYS View Post
Don't worry, it took me a couple of years and loads of broken parts to get the hang of it.....
Yep I have to agree, there will be quite a few broken parts. Thanks for the reply.
Johnnymac1965 is offline  
Old 05-31-2020, 07:07 PM
  #9  
Tech Regular
iTrader: (2)
 
Join Date: Jan 2018
Location: Kansas City, MO
Posts: 441
Trader Rating: 2 (100%+)
Default

You can also look at VRC Pro:

https://store.steampowered.com/app/335070/VRC_PRO/

It can help a bit. However, air control is a little easier in the sim than real life but it does help.
Mahjik is offline  

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 - Do Not Sell My Personal Information -

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.