RC Truck and Construction  

Go Back   RC Truck and Construction > RC Tech section. > Mechanical tech

Mechanical tech This is for the mechanical parts of a model. Gear reductions, Axles, Transmissions, General drive line


Reply
 
Thread Tools Display Modes
  #1  
Old 12-08-2010, 10:39 AM
SuperDutyScaler SuperDutyScaler is offline
Green Horn
 
Join Date: Nov 2010
Location: South Jersey
Posts: 219
SuperDutyScaler is on a distinguished road
Default three speed gear ratio

i was reading a few post where it reads that the semi gearbox has lower ratio's than the F-350 gearbox? im turning my F-350 into a pulling truck and since my big rig isnt done yet i was going to see if i can put the semi gears into my F-350 and try some motor setups. is this true and can they fit into each others gearboxes??
Reply With Quote
  #2  
Old 12-08-2010, 07:48 PM
Tamiya Cowboy's Avatar
Tamiya Cowboy Tamiya Cowboy is offline
Big Dawg On The Bone
 
Join Date: Aug 2010
Location: South Dakota
Posts: 2,981
Tamiya Cowboy has a spectacular aura aboutTamiya Cowboy has a spectacular aura aboutTamiya Cowboy has a spectacular aura about
Default Re: three speed gear ratio

All the grears are the same I am pretty sure as I have a set of each here and they look the same. I have not head the semis are lower geared..
__________________
Paul W. "Tamiya Cowboy"

HI.. My name is Paul.. And.. I.. Have a Cabover Addiction.

RIP FreddyGearDrive 2-12-59/12-19-11 "LET IT EAT"
Like Us on Facebook "Corn Field Mafia"



To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #3  
Old 12-09-2010, 08:24 AM
Stepside's Avatar
Stepside Stepside is offline
Super Moderator
 
Join Date: Aug 2010
Location: Pittsburgh, PA
Posts: 668
Stepside will become famous soon enough
Default Re: three speed gear ratio

I think it may be quite the opposite. I think the highlifts are geared down due to the large spur gear that the engine meshs with.

I believe Paul is right, the internal gears are identical on the three speeds. I think the only difference is the large spur gear on the front of the highlift trans.
__________________
"If you build it, they will come"
East Coast Mini Truckers


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #4  
Old 12-09-2010, 01:12 PM
tc1cat's Avatar
tc1cat tc1cat is offline
Super Moderator
 
Join Date: Aug 2010
Location: Northern Indiana
Posts: 1,318
tc1cat is on a distinguished road
Default Re: three speed gear ratio

I agree with Stepside. My Studebaker build had an F350 tranny in it for 4WD and was much slower than any of my semis with the same motor in them in the same gear.
Reply With Quote
  #5  
Old 12-09-2010, 01:28 PM
Espeefan's Avatar
Espeefan Espeefan is offline
Big Dawg On The Bone
 
Join Date: Aug 2010
Location: Wisconsin
Posts: 2,888
Espeefan has a spectacular aura aboutEspeefan has a spectacular aura aboutEspeefan has a spectacular aura about
Default Re: three speed gear ratio

The big rig and Highlift transmissions both use identical internal gear sets for 1st, 2nd, and 3rd gear. It wouldn't make sense for Tamiya to tool up special gears for the Highlift, so the parts carry over. What is different about the transmissions though, is that Highlift has an added transfer case to the rear, and the gears used in the transfer case portion provide an extra reduction that the rig transmissions lack. There could also be a difference in spur gears or pinion gears as well, but internally, excluding the transfer case of the Highlift transmission, they are identical in design.
__________________
Nathan
Reply With Quote
Reply


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

Forum Jump


All times are GMT -4. The time now is 07:30 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.