noisy tranny?

[duval003]

Just bought a Highlift and noticed when running the truck the tranny is a little loud. Doesnt sound bad just noisy. is this common?

[Larrio]

How much grease did you add to the gears (or did you add any at all)?

Usually that will quiet things down a bit. Although noisy is somewhat subjective towards the individual user.

[duval003]

I used grease on all the tranny gears. I have touring cars, stadium trucks, and a crawler. When you let off on the throttle with these they tend to keep rolling for a bit. With the highlift as soon as you let off on the throttle it almost stops immediatly. It drives fine but seems like alot of work for the motor to turn everything.

[mcovalsk]

I used grease on all the tranny gears. I have touring cars, stadium trucks, and a crawler. When you let off on the throttle with these they tend to keep rolling for a bit. With the highlift as soon as you let off on the throttle it almost stops immediatly. It drives fine but seems like alot of work for the motor to turn everything.

Obviously the motor has to push on a lot of gears. I used in my two trucks the ceramic grease Tamiya recommend, I apply by steps letting the grease go deep in the gears and not overcharging them which would do an extra work for the motor. The best is the old solution, oil, but this proved not to works fine (a lot of leaks).
The noise looks to be normal, although is subjetive as Larrio told.

[shodog]

As others have said, they will quiet down a bit with use.

[Larrio]

If you've driven Tamiya TL-01, M-03/04, TA-01/02 cars that feature lots of giant gears, you'll find that they are rather noisy. So in the case of the hi-lift with the 3-speed transmission and plethora of gears & countergears, the noise is normal. I'm sure you know how grinding and slipping gears sounds like so I'm sure your truck is fine.

[monster_beetle]

In the beginning I thought my truckk was very noisy too. But as already told it is because of the many gears, mine has become more and more quiet by the time. But it will never be as quiet as a top force or so.

So nothing to worry about ;)

[Mouton]

Another reason for the lower noise over time is partly because you get used to it.

Regarding the hard breaking effect when letting off the throttle. That only shows that you have a high reduction in the transmission. It only forces the motor to rev higher to reach the same speed, not work harder. On the contrary it has to work less hard, thus having enough torque to act as a brake when you let go of the throttle. Your touring cars will have more "motor brake" if you installed a higher torque motor.

My F-350 has started to make more noise when going backwards than forwards, it is thus time to service it and perhaps change some worn gears.

[duval003]

Thanks for the input guys.

[trailqeen]

ya mine makes alot of noise to

[neilf22]

just a thought, i havent yet built a high-lift, just ordered one today, but i do have 3 trucks. on the first one of these i built i found it was very noisey, knocking sort of noise.
so i stripped the case off to have a look and found the pinion gear on the motor shaft was just a little to far forward and the grubscrew end was hitting the gear as it turned round. slid it back half a mil and it reduced the noise alot. also it makes more noise if the gear is too tight down onto the next. i dont find them that noisey just keep them greases and they are fine.

hope this helps
neil

[DHC6-300]

One thing I noticed was after I installed a bearing set it got a little quieter and of course much smother. it also seemed to roll much more once you are off the throttle.

[piepie31]

My F-350 has started to make more noise when going backwards than forwards, it is thus time to service it and perhaps change some worn gears.

Mouton how long would you say before a new build needs a gearbox over haul :Tamiya1:

[Mogster]

Just a thing I found on the HL tranny - the plastic selectors ( where the selector forks engage ) they have burs from the moulding . Take a knife and make sure they are very smooth - it seems to quiten down the box somewhat

[Mouton]

neilf22 brings up a good point. The mesh is important and has a huge impact on the noise. If your truck sounds like a rock crushing mill you might want to look into that.

piepie31, that would be difficult to estimate as I have not counted the hours of service the truck has seen. What I can say is that I have driven this truck harder than any other I have owned. It has seen a lot of use in the mud. When it starts to sound much more than before, or in my case, when it sounds more going in direction you should service it.

If you, like I do, regularly drive it in mud, puddles and water you should be aware that it rinses away the grease from the gearbox, thus needing more frequent service.

[piepie31]

Thanks for that Mouton I'll keep my ears peeled and keep a regular service going on the gearbox

[fireball v8]

:LOL: I thought my f-350 was soooo quiet , copared to the high milage Hilux 4x4.... maybe i should try a quiet model out to see what "quiet" is.....

[scalenut]

The lower turn motor you use will give you more tranny noise. I have alot with an old 27t twister motor.
[ Rember them]

[Nightmare]

Same here.. More in first gear than anything else..

-Derick