125 Quad not going into top gear

[Rayjan]

Gday all,
I hoping to get a bit of advice on a couple of quads i bought of ebay for my to daughters. i got two 125 quads, Torque is the brand name and they had Loncin?? motors from memory. Did the recommended thing and backed them of until the girls got used to them and now have wound the throttle right out so they(and me) can have some fun. The thing is they both won't change into top gear, as their newish do they need to loosen up more before they change up properly or do i need to look at the gearbox or is it a carby problem? It hasn't been an issue as yet because they still learning but when i get on and want to give it a bit of stick to go into top gear would be good.
Anyway any thoughts would be appreciated.
Cheers
Ray

 

[DvDRip]

how many gears do they have? what's the pattern 1N234 or N1234? semi auto?

 

[Rayjan]

Sorry semi auto. At first I just thought thats the way they were cause both were doing the same thing but when i took them out on the weekend one of them changed into top for most of the day but the next day it was back to the way it was before.This sorta made me think that maybe as the box loosens up it will change up easier if not i'm unsure whether I need to look at the box or whether it has something to do with the throttle settings in the carby or if its something else completely different. I dont mind getting dirty and want to get more familiar with the bikes but just need to figure out where to start with this one.

 

[headsmess]

mmm, the shift selectors probably just wearing in....

or the clutch isnt fully disengaging? gotta back off with a semi auto..

theyre standard all up? with no reverse? most quads ive met are 3Forward 1Reverse

 

[Rayjan]

Both quads are the same down for forward gears, middle is neutral and up is reverse. It goes in and out of the first couple gears no probs. Had a little trouble changing into gears initailly when we first started because the idle was to high and I backed it off which sorted that but no appearance of top gear until the weekend but that was on the quad which has received the most "fun" from my eldest daughter

 

[thump*140]

Hmm... they might loosen up with a few more hours on them, but it is a bit odd... a new box *should* shift seamlessly...
Have you changed the original engine oil as part of your initial set-up?
Might be a long shot, but also worth a try...
when you go for top gear, is the shifter moving, but not translating into third gear, or is it just not moving any further... ie: when you go for third, the lever wont move at all??
if it's not moving, it may be a case of the selector dogs not being installed properly when the motor was assembled, but then you did say one of them was getting top occasionally...
odd... perhaps put a few more hours on the motors, and keep an eye on the shifting... if there is no improvement, i'd be heading back towards the seller pretty rapidly...

 

[headsmess]

ok, ok, they ARE 3 speeds! just sorta assuming top meant 4th... are you 100% sure of this? ive seen a 3F1R pattern, and a 1F1R pattern... and you said neutral is in the middle... meaning you have F N R. and you also say theyre fine in the first few gears... meaning you have 321 N R... could there be a 2 speed perhaps? either way, im slightly confused

biggest problem is we're dealing with two of them...

so one may have just 1F and 1R, the other has 3F1R....just a thought...

otherwise, just keep using them, i think its mainly just some rough edges/ burrs on the shifter drums that need wearing in.
the reverse selectors are a slightly different design to the standard 4 speeds... they have the idler gear for reverse to deal with...

can you get top gear if you try changing gear without the engine running? rocking them back and forth? if so, try doing that a couple of times, or 200...

otherwise it could well be bad design/assembly...with no easy fix over a keyboard...

 

[Rayjan]

Seems I may be confusing people. The quads are semi auto so when its in neutral you whack it once forwards and your off it changes in full auto up and down. When you stop back one for neutral and back one for reverse. When I was riding them before it always felt like it needed to up one gear but I just thought thats the way they were as they are just one change forward, no more gears, until the weekend when one of them actually went up the next gear and straight away you could tell the difference, much higher top speed up around 60 odd where before they were struggling to hit 40. I've been trying to scan a picture of the clutch set up to give a bit more info but its playing up atm will attach asap

 

[Rayjan]

Got them scanned...finally...hope that clears things up a bit

 

[thump*140]

ah, now we're getting somewhere...
I have a 110 mini chopper which runs a similar type of gearbox... it's a bit of a weird one, two-speed gearbox, that is literally twist and go...
Oil will play a vital role in getting these boxes to shift properly, so put some half decent mineral four stroke oil in it...
Carby setting *will* have an effect on whether these things shift properly, basically they need to be running clean in the top end for top gear to select...
Took me ages, and lots of phone calls to the original seller of my chopper, and a bit of coaxing from him, to convince me that 1st gear (second on your girls quads) needs to be thrashed and wound out before it would select top gear.... and like you said, the difference is immediately noticeable when it does click top...
keep at em, and experiment with different oils as the motors get a few more hours on them... but yeah, i still reckon engine oil is going to make the difference here.

Hope that helps.

 

[Rayjan]

No worries, thanks for that. I will drop the oil and put some new stuff in to start of with and I guess I will just have to keep thrashing around a bitThanks for the assistance everyone

 

[headsmess]

ah, now we're getting somewhere...
I have a 110 mini chopper which runs a similar type of gearbox... it's a bit of a weird one, two-speed gearbox, that is literally twist and go...

Hope that helps.

this thing happen to have a gear shift or not? cus i got a "chopper" engine without one... and never started it up...

 

[thump*140]

nah Headsmess, no shifter at all. just twist n go... kinda like a lot of the 50cc pitties you see for lil kids on fleabay, difference being, this one is a 2-spd "powerglide"... heh heh...
gearbox/cases are wiiiiiide though... might put some pics up later..

 

[headsmess]

besides they dont make all the noise of a badly piped 2 stroke with a dodgy clutch and a starter thats always dying...

but interesting, nonetheless!.... makes me really wanna do this chopper build now....

cactus also has one...or two? id love to see his shed

we was of the opinion they was just single speeds...

right, i need a blank sprocket...

 

[thump*140]

not sure how many cogs your motors have... but for a two speed full auto, behind stock 110 with a 19mm carby, running an 8" lawnmower rim on a turf tyre... it moves reasonably well.. top speed unconfirmed, but around 100... definately does over 90, that i can confirm... 90+kph with ur ass 8" off the ground, with a rigid frame is a tad sketchy. but worth it...
pics to come, this one of mine is a pretty well though out little bike, might give you some ideas for your chopper...

 

[thump*140]

The auto chop-chop...