Bolt on`s Berg Superjuice

[Bolt on]

Setup: From what I have read on rccrawler
Axles: Rcbros lightweight Berg locker
Berg axles with homemade tubes and servo Mount
Knuckle weights and link monts from D-lux
Motors: Team Brood Apocalypse 45T HHK
ESC's: 2x Holmes Hobbies BR-XL
BEC's: 2x Castle Creations BEC 10A
Servo's: 2x Hitec HS7980TH
Battery: Thunder Power 850 Mah 65C
Transmitter: Futaba 4PKS
Chassis: Team Y-Town Crawlers Delrin Superjuice
Wheels: HPI Homemade rims
Tires: Hot Bodies Sedona 7,5" Homemade
Shocks: Traxxas Big Bore 4" Axial rod ends
Links: Made by moses670

This is the first super that I have built, need good advice for improvements.

Thanking jeremyH for help and advice.

Will be testing this when the snow is gone and some komps in Norway before I run superCrawler in Germany.

Stein

[fritzthefly]

Rig and Knuckle Weight System Looks very good. See you at the Supercrawl

[Bolt on]

Originally Posted by fritzthefly

Rig and Knuckle Weight System Looks very good. See you at the Supercrawl

Thank you fritzthefly, looking forward to coming to Germany this summer.

Stein

[JeremyH]

That turned out nicely! You are gonna LOVE driving these big trucks!

[Bolt on]

Originally Posted by JeremyH

That turned out nicely! You are gonna LOVE driving these big trucks!

Thanks Jeremy, will be fun to test this as soon as the snow is gone.

I adjusted the drag break, but there is sound in a motor.
Adjusted it down to 30%, but heard a weak sounds from the motor.
Removes Holms hold and the sound disappears.
Motor and ecs are new, do I need to check this more?

Adjusted both at 60%.

Stein

[fritzthefly]

Thats the normal sound of Holmes Hold, .I have mine set at 40% with 45T Holmes Motors.

fritz

[Bolt on]

Originally Posted by fritzthefly

Thats the normal sound of Holmes Hold, .I have mine set at 40% with 45T Holmes Motors.

fritz

Yes, know that there is sound from the motor.
But the sound was gone by 60% on one and had to go down to 30% on the second.

Stein

[JeremyH]

I have mine set pretty low as well (IIRC, 40%). Are you checking the motor buzzing at idle on a flat surface with no transmitter input? That Holmes Hold will cause the motors to buzz under load, but should be silent at idle.

[Bolt on]

Originally Posted by JeremyH

I have mine set pretty low as well (IIRC, 40%). Are you checking the motor buzzing at idle on a flat surface with no transmitter input? That Holmes Hold will cause the motors to buzz under load, but should be silent at idle.

Yes, I do.
The motor is quiet when I start to throttle.

Is quite weak, well maybe it is ok.
But it is not completely silent, you see the armature go back and forth

[JeremyH]

That is strange....that's not how it works on my truck. I believe the way the Holmes Hold works is to reverse the direction of the motor just a slight amount. Perhaps your throttle trim is not set exactly at zero?

[Bolt on]

If not idle throttle is at zero, would not this problem been on both motors?

[ittybitty]

The Holmes Hold is an "active hold" so it will pulse the motor in both directions at a very high frequency if I remember correctly. It will cause a buzz and what you are describing sounds fine.

[Bolt on]

Originally Posted by ittybitty

The Holmes Hold is an "active hold" so it will pulse the motor in both directions at a very high frequency if I remember correctly. It will cause a buzz and what you are describing sounds fine.

Thanks for the reply.
Were just afraid that electronics would be damaged as the motors did not behave in the same way.

Stein

[RcBro]

Any chance you can snap a picture of how the rear of the servo is mounted? Looking for ideas lol. Thanks

[filotr14lsdude]

Originally Posted by RcBro

Any chance you can snap a picture of how the rear of the servo is mounted? Looking for ideas lol. Thanks

That picture that shows the servo mount is of the rear.

[RcBro]

The "rear" of the servo, not the "rear" of the rig ;)

[Bolt on]

Rear edge of servo is attached to a bracket that is attached by a screw into housing of the gearbox.

Drilled and threaded hole in the gearbox and cut screw so it does not touch the gears.

Hope that was how you meant by your question.

[RcBro]

Thank you, I appreciate it!

[racer_zh]

Nice Driving at the Supercrawl Stein

congrats 3rd is awesome result for your first big Comp

[Bolt on]

Originally Posted by racer_zh

Nice Driving at the Supercrawl Stein

congrats 3rd is awesome result for your first big Comp

Thank you Manu, it was totally unexpected that it would be so good.
Thought breaking competition after all 4 wheels parted, but thanks to Samuli that helped me repair them ..

Stein