Schumacher Mi4
#3586
Tech Elite

iTrader: (101)
Join Date: Dec 2004
Location: Far away from Covid19 but close to 20
Posts: 4,123
Trader Rating: 101 (100%+)

they work fantastic and are quite inexpensive (like $3.00 for 8). The HPI out and inner diameter is slightly bigger than the Schui o-rings.
Tamiya are smaller, Top blues are smaller...X brand are way smaller...
Associated red o-rings may work but haven't sized them up.
I personally would not run the shock without the lower spacer, the spacer is working as a guide. Without it the shaft will sway allowing the piston to rub the inner shock cylinder.
Just my opinion of course. Run'em any way you want to build them.

#3588
Tech Rookie

When I was in a pinch and couldn't get the blue o-rings I used HPI red o-rings
they work fantastic and are quite inexpensive (like $3.00 for 8). The HPI out and inner diameter is slightly bigger than the Schui o-rings.
Tamiya are smaller, Top blues are smaller...X brand are way smaller...
Associated red o-rings may work but haven't sized them up.
I personally would not run the shock without the lower spacer, the spacer is working as a guide. Without it the shaft will sway allowing the piston to rub the inner shock cylinder.
Just my opinion of course. Run'em any way you want to build them.
they work fantastic and are quite inexpensive (like $3.00 for 8). The HPI out and inner diameter is slightly bigger than the Schui o-rings.
Tamiya are smaller, Top blues are smaller...X brand are way smaller...
Associated red o-rings may work but haven't sized them up.
I personally would not run the shock without the lower spacer, the spacer is working as a guide. Without it the shaft will sway allowing the piston to rub the inner shock cylinder.
Just my opinion of course. Run'em any way you want to build them.

Just built two shocks, one with 2 blues, one with 1 clear + spacer, doesn't seem any less sway at piston head with either option. piston still wobbles around and rubs inside of cylinder with either.
#3589
Tech Elite

iTrader: (101)
Join Date: Dec 2004
Location: Far away from Covid19 but close to 20
Posts: 4,123
Trader Rating: 101 (100%+)

I see what you mean about the piston rubbing the cylinder more, but wouldnt it sway and rub anyway even with the spacer as it's not a tight enough fit to keep the piston exactly true when shock is compressed. Not an expert on fluid dynamics but wouldn't there always be oil moving around the sides of the piston to keep it true?
Just built two shocks, one with 2 blues, one with 1 clear + spacer, doesn't seem any less sway at piston head with either option. piston still wobbles around and rubs inside of cylinder with either.
Just built two shocks, one with 2 blues, one with 1 clear + spacer, doesn't seem any less sway at piston head with either option. piston still wobbles around and rubs inside of cylinder with either.
makes a huge difference...you will be surprised.
I have to thank Mike Haynes for that tip.

#3590

I see what you mean about the piston rubbing the cylinder more, but wouldnt it sway and rub anyway even with the spacer as it's not a tight enough fit to keep the piston exactly true when shock is compressed. Not an expert on fluid dynamics but wouldn't there always be oil moving around the sides of the piston to keep it true?
Just built two shocks, one with 2 blues, one with 1 clear + spacer, doesn't seem any less sway at piston head with either option. piston still wobbles around and rubs inside of cylinder with either.
Just built two shocks, one with 2 blues, one with 1 clear + spacer, doesn't seem any less sway at piston head with either option. piston still wobbles around and rubs inside of cylinder with either.
#3592
Tech Rookie
#3593
Tech Elite

iTrader: (101)
Join Date: Dec 2004
Location: Far away from Covid19 but close to 20
Posts: 4,123
Trader Rating: 101 (100%+)

Does not work, not enough room.
If you can go to a LHS take the blues and measure to other stuff. If you're lucky you'll find a slightly larger diameter o-ring.
HPI was the best fit that I found but there may be others.
Mine never leak at this time.
#3594
#3595
Tech Rookie

Just bought some shorty lipos from hk, mainly for my cougar but noticed some people are using them on a TC with esc mounted behind them opposite the motor. Is this possible on a cx? Just wondering about securing the battery, not sure if I want to start dremmeling the chassis. Has anyone done this yet?
I'm just using battery tape and the kit lipo retainer at the moment
I'm just using battery tape and the kit lipo retainer at the moment
#3596

I tried building like that a few weeks ago
Does not work, not enough room.
If you can go to a LHS take the blues and measure to other stuff. If you're lucky you'll find a slightly larger diameter o-ring.
HPI was the best fit that I found but there may be others.
Mine never leak at this time.
Does not work, not enough room.
If you can go to a LHS take the blues and measure to other stuff. If you're lucky you'll find a slightly larger diameter o-ring.
HPI was the best fit that I found but there may be others.
Mine never leak at this time.
#3597

Just install the long top deck conversion and the front belt seems too close to the top deck. I check the front diff and get as much shims i can on the left side but still seems too close. Anybody run in the same problem or did I get the wrong front diff ?
#3598
Tech Master

The main issue there is that the spec - R gear diff isn't designed to fit the front of the Mi4, only the rear. It does "kind of" fit, but as you can see from your picture this causes the belt to run on an angle across the chassis.
#3599

Thanks swap back front spool problem solved.
#3600

Question.
What effects does the twin point steering have over the single point?
http://www.racing-cars.com/pp/New_Ca...CXL/U3774.html
What effects does the twin point steering have over the single point?
http://www.racing-cars.com/pp/New_Ca...CXL/U3774.html