R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 01-15-2007, 01:07 AM   #1
Tech Addict
 
32819toon's Avatar
 
Join Date: Mar 2006
Location: North of England
Posts: 580
Trader Rating: 1 (100%+)
Default installing 2 speed gear box

Hi,
I've just installed a new 2 speed gearbox into my car. I haven't finished re-building the car as I may have a problem. When I turn the rear wheels together, they are very tight and difficult to turn. When I put the car down and try to push it along, there is quite a bit of resistance. This isn't normal is it ? What could be wrong ?
Thanks for your help.
Regards,
32819toon
32819toon is offline   Reply With Quote
Old 01-15-2007, 01:19 AM   #2
Tech Elite
 
rcabj's Avatar
 
Join Date: Feb 2004
Location: johor, west malaysia
Posts: 4,682
Trader Rating: 1 (100%+)
Default

what car is this? and u meant the rear gear diff right?
__________________
BLacK cRoW RaCiNg TeaM
JBRCC
TEAM ORANGE
RCCUTM
pemandu upahan ;)
rcabj is offline   Reply With Quote
Old 01-15-2007, 03:05 AM   #3
Tech Addict
 
32819toon's Avatar
 
Join Date: Mar 2006
Location: North of England
Posts: 580
Trader Rating: 1 (100%+)
Default

Hi,
Yes I mean the rear diff, sorry if I confused. The car is a kyosho Alpha GP 3.
Regards,
32819toon
32819toon is offline   Reply With Quote
Old 01-17-2007, 08:07 AM   #4
Tech Addict
 
32819toon's Avatar
 
Join Date: Mar 2006
Location: North of England
Posts: 580
Trader Rating: 1 (100%+)
Default

Hi again,
Another observation I've made. When I turn the wheels at the rear, should the spur gears also rotate, and as the engine is in place, also turn the gears on the clutch bell ? They are not moving. WHen I move the spur gears, the wheels sort of rotate, but not much. I've stripped everything down again and I can't see that anything is wrong with the assembly. Can anyone shed any light on to this ?
32819toon is offline   Reply With Quote
Old 01-22-2007, 06:02 AM   #5
Tech Addict
 
32819toon's Avatar
 
Join Date: Mar 2006
Location: North of England
Posts: 580
Trader Rating: 1 (100%+)
Default

Anyone ????
32819toon is offline   Reply With Quote
Old 01-22-2007, 06:17 AM   #6
Tech Apprentice
 
caggers's Avatar
 
Join Date: Apr 2005
Location: Sydney
Posts: 92
Default

Is the brake locking?
caggers is offline   Reply With Quote
Old 01-22-2007, 06:29 AM   #7
Tech Addict
 
32819toon's Avatar
 
Join Date: Mar 2006
Location: North of England
Posts: 580
Trader Rating: 1 (100%+)
Default

Hi caggers, thanks for the reply. I suspect it could be the brakes, but how can I confirm this. As you've probably guessed, I'm quite new to this. I also suspect the one way bearing which was pre-installed in the kit may be in the wrong way round as the wheels rotate in the reverse direction. What do you think ? I'm worried that as soon as I start the engine I'm going to strip the gears.
Regards,
32819toon
32819toon is offline   Reply With Quote
Old 01-23-2007, 05:12 AM   #8
Tech Adept
 
Join Date: Jul 2006
Location: Singapore
Posts: 137
Default

Quote:
Originally Posted by 32819toon
Hi caggers, thanks for the reply. I suspect it could be the brakes, but how can I confirm this. As you've probably guessed, I'm quite new to this. I also suspect the one way bearing which was pre-installed in the kit may be in the wrong way round as the wheels rotate in the reverse direction. What do you think ? I'm worried that as soon as I start the engine I'm going to strip the gears.
Regards,
32819toon
You shld be able to remove the spur gears and possible remove the clutch bell and check the 1 way bearings.

Facing the spur gears (rear on ur left and front wheel on ur right) turning the spur gears anit-clockwise (wif engine mounted) should be smooth and when you spin it clockwise, they shld engage. Correct me someone if my interpretation is wrong. Is your engine new? as some new engine are hard to spin in beginning however when it fire off it shld be easy to turn again.

Check your 2 speed changer ensure they got smooth edge or flushed on the surface before the smaller spur gear are inserted.
Black_Widow is offline   Reply With Quote
Old 01-23-2007, 05:30 AM   #9
Tech Addict
 
32819toon's Avatar
 
Join Date: Mar 2006
Location: North of England
Posts: 580
Trader Rating: 1 (100%+)
Default

Hi,
Thanks Black Widow.
I stripped it down again last night. It's rotating now, but does stop. I suspect it could be something to do with the brakes. I can't tell though as they are within the diff casing. How will I know ?
32819toon is offline   Reply With Quote
Old 01-25-2007, 08:26 AM   #10
Tech Adept
 
Join Date: Jul 2006
Location: Singapore
Posts: 137
Default

Quote:
Originally Posted by 32819toon
Hi,
Thanks Black Widow.
I stripped it down again last night. It's rotating now, but does stop. I suspect it could be something to do with the brakes. I can't tell though as they are within the diff casing. How will I know ?

Check your linkage. when u throttle, does the car move smoother? or when u release the throttle you feel the restrain?

if so, u might require a self-made spring to recoil or release the rod to free the brade pad just incase it really caught jammed or readjust the linkage rod setting again.
Black_Widow is offline   Reply With Quote
Old 01-25-2007, 08:44 AM   #11
Tech Addict
 
32819toon's Avatar
 
Join Date: Mar 2006
Location: North of England
Posts: 580
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Black_Widow
Check your linkage. when u throttle, does the car move smoother? or when u release the throttle you feel the restrain?

if so, u might require a self-made spring to recoil or release the rod to free the brade pad just incase it really caught jammed or readjust the linkage rod setting again.
Thanks for the reply Black Widow. I haven't even built the car up again yet. I have put a new engine in aswell so I think I'll do the run in on the engine before I do that. The wheels are rotating now which is the main thing, it's just that it jerks a bit. The spur gear turns fine and it also turns freely when I turn the clutch bell. The jerking only occurs when I turn the rear wheels together.
Thanks,
32819toon
32819toon is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
what gear combo for top speed in my rc18 slowpokeRRR Micro and Mini Scales 0 01-28-2007 10:01 PM
installing 2 speed gearbox 32819toon Rookie Zone 8 01-20-2007 05:27 PM
Spur Gear on RS4 3 2 Speed not turning BeBop Nitro On-Road 3 06-24-2005 10:00 AM
need help..what kinda 2nd speed gear is this cressTT Malaysian R/C Racers 19 11-12-2003 07:14 PM
What other gear ratios can I put into the HPI ss 2 speed racinZrooky Nitro On-Road 1 12-03-2002 11:11 AM



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 10:53 AM.


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