Raman

iTrader: (94)

Fyrstormer do you use a shock air removal pump?

https://www.amainhobbies.com/tamiya-shock-oil-air-removal-tool-super-long-tam54152/p208367

SerpentCT4S

iTrader: (95)

I've heard mixed things about using a pump. Some say it's ok to use. I'm very into rc drifting and some top drifters in the world say the pump causes the o-rings in the shocks to swell and make them leak. I've heard of some people putting their thumb on top of the shock and pushing the piston up and down to remove bubbles. Similar to the pump, but less strain on the o-rings.

SerpentCT4S

iTrader: (95)

I have a slipper clutch for the XV-01. Is anyone interested in buying it? I have no use for it.

Raman

iTrader: (94)

Some interesting myths there.

It removes surface air, and is not that powerful to cause o-rings to swell. To do what the drifters are saying, the suction would have to work its way through the oil, through the piston and piston shaft to put pressure on the o-ring.

O-ring swell due to the silicon oil. Open up your diff and take a look at the o-ring, you will see the same thing.

Every professional RC racer uses the pump. Its the best method for creating consistent shocks.

Tom1977

NEVER heard of that the air removal pump causes swelling of o-rings.

And if o-rings swell, they mostly cause more friction as long as they sit correctly in their recess in the damper.

O-rings leak, when they have the wrong inner diameter. But this can be adjusted with shims. Or they are damaged. Then use new ones.

moistAF

iTrader: (2)

I've heard some drifters say the pump puts more air in the oil via the lower seal. lol. Pumping will remove air out of the whole system, so how would it pull air through the lower seal and keep the air in the oil? Drifters say some stupid things.

LJH

iTrader: (2)

Stance....YO.....

SerpentCT4S

iTrader: (95)

Ok, just forwarding what I've heard from several professional drifters from different parts of the globe. I myself use the pump occasionally, but may try a few builds without it.

Raman

iTrader: (94)

Professional and drifter = oxymoron

Yes I know I'm mean

moistAF

iTrader: (2)

I wouldn't go that far. There are skilled Japanese drivers. I was only taking a jab at the hivemind that just follows what the next guy is doing, without thinking it through.

4roller

Here is the xv-01tc-rally in Lancia Delta form.

The body came on my second xv-01 with a horrible cut and paint job devoid of any of the decals or livery. I added some decals from various leftover sheets I had lying around. I think it adds a bit of racing air don't you think?

Before and after.






It's not the prettiest model as you'll see, I know. But since adding the race style decals, adjusting my ESC settings, and adding 75mm tires, it is even more fun to drive. It begs to be driven rally style. I traction roll it once in a while. The inner rear tires lifts on hard turns. I think it's because of the high ride height and extra gushy tires. Below you can see the size difference between a HPI x-pattern and the oversized tire (75x30 on a 26mm rim)




I added a metal kick plate to the front to handle offroad and curb transitions. I get the occasional metal scraping sound when launching off curbs.




With the plate, larger tires it can handle more rough terrain.

Except when you crash into the sidewalk gaps. I cracked the front of the chassis where the transmission screws are set. The car drive in at full speed over grass and smashed into sidewalk and bounced backwards about 4 feet.



I loosened the screws and popped the chassis back I to place. Its all good. For now. I was back outside in minutes. The geometry seems fine.

The car really drives well in this lifted large tire configuration. I set up the 17.5 and the ESC to have full punch, turbo 20degree timing after 11000RPMs. Because of this, it feels like a fast acceleration rally car. The car is extremely zippy throughout the throttle range it has very little lag and has decent top speed and the motor and ESC don't get too hot.

I really am enjoying this car in rally style. By setting this car up to be offroad capable, your whole street, driveway, lawn, curb become the course!

fyrstormer

iTrader: (1)

No, I don't use an air-removal pump. I compress the shock, wait a few seconds for air bubbles to start to float up from the bottom, and then extend the shock very firmly to drive fluid into the seals and flush the air bubbles to the top side of the piston where they can float to the surface and pop. I repeat as necessary every few minutes until I don't see any new air bubbles appear in the fluid after extending the piston. Needless to say this takes a while, so I do it while playing a videogame or paying bills or whatever, so I'm not just sitting around with my thumb up my...well, you get the idea.

fyrstormer

iTrader: (1)

4roller, are those 2.2" wheels?

4roller

75mm OD, but the same 52mm touring rim (1.9”) Inside Diameter. I made the Lancia body wheel wells a lot larger to handle the extra size.

Colbynobo

iTrader: (21)

4roller, where did you get those tires? I want a set for my XV-01. Did they come mounted? If so, what offset would you say they are? The tread reminds me of the stock tires that come on a lot of the Team Associated shortcourse trucks - though shrunken down to a smaller wheel.