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.

3 speed tranny, need some help.

Old 12-27-2005, 02:11 PM
  #1  
PSG-1
Senior Member
Thread Starter
 
Join Date: Oct 2005
Location: , CA
Posts: 186
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default 3 speed tranny, need some help.

I've got a 3 speed tranny and sometimes it shifts almost directly from 1st to 3rd. I can tell it's hitting second but it's shifting right through to third. Instead of having 3 difinitive gears it sometimes just sounds like a 2 speed tranny. Any suggestions?
PSG-1 is offline  
Old 12-27-2005, 02:41 PM
  #2  
bam.bam
Senior Member
 
Join Date: Jun 2005
Location: Anywhere
Posts: 507
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 3 speed tranny, need some help.

If you think that's the case and assuming your enginge is tune correctly then delay the shift points.
The external port on the tranny case is for the 2 to 3 gear shift adj.
The 1 to 2 shift ajd is internally and have to take the tranny apart.
Screw adj direction is clockwise for more delay. 1/4 turn at a time is recommended.
Also try to stick with one spurgear/clutchbell combo when doing tranny shift point adj.
Switching sg/cb combo during tranny shift point adj. will throw off the shift points.
Hope this help.
bam.bam is offline  
Old 12-27-2005, 06:09 PM
  #3  
PSG-1
Senior Member
Thread Starter
 
Join Date: Oct 2005
Location: , CA
Posts: 186
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 3 speed tranny, need some help.

It doesn't always do it, just sometimes... i wonder if it's the dirt that i'm in causing the tires to spin so fast that it's just shifting through to third?
PSG-1 is offline  
Old 12-28-2005, 12:06 PM
  #4  
Neil E
Senior Member
 
Neil E's Avatar
 
Join Date: Jun 2005
Location: Sachse, TX
Posts: 430
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 3 speed tranny, need some help.

In dirt I find that it is hard to sometimes tell (hear) when the three speed shifts from 1st to 2nd. I go to a parking lot and run my truck on dry pavement. I drive it at different speeds to determine when my tranny shifts. When all is working well on pavement what happens in dirt happens. Wheel spin will definatly change the shift points. It's all about RPM's
Neil E is offline  
Old 12-28-2005, 05:22 PM
  #5  
spareanychange
Senior Member
 
Join Date: Aug 2004
Location: warwickshire, UNITED KINGDOM
Posts: 108
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 3 speed tranny, need some help.

yer, set it in a big car park or somit, and then take it to dirt and itll usually run good, you cant hear shifting, especially if its that smaller change in tone as it is in dirt, especially if you have a 4.6 which has alot of power, as soon as it shifts the wheels spin up n e way.
spareanychange is offline  
Old 12-29-2005, 08:01 PM
  #6  
rounder540
Member
 
Join Date: Mar 2005
Location: Mt. Pleasant, MI
Posts: 31
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 3 speed tranny, need some help.

has any one thought about making there allen wrench fit the two speed clutch holder ? i was thinking of grinding down an allen wrench to do this adjustment without having to take apart the whole thing havent done it yet but i will once i get all my stuff which brings me to my next question (sry to bug but i gotta find out ) have reverse mod and *** gear shaft can anyone put something on here showing if these are compadable or not ? and what to do step by step part 87035c has that piece on the end of it and wont slide on to the *** shaft did i just waste 30 bucks or is there some way to put the *** gear shaft on the reverse mod lost paper that had thing on it came with 3 speed instruc so can anyone plz help
rounder540 is offline  
Old 12-29-2005, 10:09 PM
  #7  
the dog
Senior Member
 
Join Date: Nov 2005
Location: wasilla, AK
Posts: 360
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 3 speed tranny, need some help.

im new to 3 speed but when i run mine on snowy conditions it shifts from 1st to second so fast that you really have to lay off the gas to hear it good. i like mine to shift early though. also if your using a 47tooth spur or smaller it is really fast. i have been using 49tooth for no good reason. they work ok. i cant hardly get mine to third because the wheels are spinning so fast that it starts to spin outta control so i cant hardly keep it ina straight line. theres no pavement to be seen for about another 3 months up here so i have to wait till spring. try a lowere spur gear.
the dog is offline  
Old 12-30-2005, 09:26 PM
  #8  
BlakeBlake1234
Junior Member
 
Join Date: Dec 2005
Location: Toms River , NJ
Posts: 1
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: 3 speed tranny, need some help.

yea i got a question..my savage 3 speed tranny shifts fine from 1st to 3rd gear but when i slow up it wont shift back to 1st. it stays in 2nd ..anyone got any suggestions or help ?
BlakeBlake1234 is offline  

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 - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

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