H3t (WIP)

[Jeka Jackson]

Hi,

I've started my new H3t model, it has 4 speed gearbox - servo motor, double reduction after differentials (12:24, 8:24), 2 buggy motors, m-motor for steering & it also has pneumo diff-lock system controlled by RC block servo.

I like how it rides)))

Here's the first test-drive video:

Edited July 31, 2013 by Jeka Jackson

[Doc_Brown]

Hey that's looking really good! got any pics? :D

im interested in gears using the servo.

[Jeka Jackson]

Hey that's looking really good! got any pics? :D

im interested in gears using the servo.

About the gearbox - you can find here: http://www.doublebrick.ru/blogs/jackson/4-h-stupenchataya

[Doc_Brown]

WOW, that's an awesome gearbox! Great job, can't wait to see it finished.

[Jeka Jackson]

WOW, that's an awesome gearbox! Great job, can't wait to see it finished.

Thanks)

[Meatman]

I wonder how much the weight of a body will affect it?

[Jeka Jackson]

I wonder how much the weight of a body will affect it?

It'll not affect too much) cause the chassis has a great torque moment (always lower reduction) I've tried + 1,5 kg on it - rides the same way)

[allanp]

Fantastic work so far!

[legomuppet9]

Great work with the chassis so far

[rm8]

Hold on Defender, hold on Sheepo! H3 is coming! Boo!

:)

Great work Jeka!

It aso remind me AndyCW's works. Also with Gearbox and difflocks.

[AndyCW]

It aso remind me AndyCW's works. Also with Gearbox and difflocks.

I'm tickled that people think of me when I am absent

[piterx]

It'll not affect too much) cause the chassis has a great torque moment (always lower reduction) I've tried + 1,5 kg on it - rides the same way)

i was about to say "this chassis is great" then i read this and i'd say "this chassis is greater"

[Jeka Jackson]

Thanks! It was just its first test-drive, I have a lot to do...)

[Jeka Jackson]

... Here's the small "TT test" of my mostly complete H3t chassis

Oh, I forgot to tell that it was on its 2-nd gear

[efferman]

h3t stands for? hummer H3 maybe?

[legomuppet9]

Nice performing chassis

h3t stands for? hummer H3 maybe?

Yep

[Jeka Jackson]

h3t stands for? hummer H3 maybe?

H3t ))) it'll be pickup) its wheelbase is longer than H3's

I've got drawings & made calculations

Edited July 26, 2013 by Jeka Jackson

[efferman]

this one?

source

[Jeka Jackson]

Yes, this one!

[piterx]

wow man! that's amazing :)

could you tell me some things?

i'd like to know what ratio the 4th gear has, and how much what you have now weighs just to know the capabilities of rc buggy motors

[Jeka Jackson]

wow man! that's amazing :)

could you tell me some things?

i'd like to know what ratio the 4th gear has, and how much what you have now weighs just to know the capabilities of rc buggy motors

The gearbox rations:

1 - 1:5

2 - 1:3

3 - 3:5

4 - 1:1

(About the gearbox - there was the link at the beginning of this topic.)

I've used "slow buggys exits". After gearbox - transmission comes to blocking differentials, after diffs it has reduction 12:24, then 8:24, such reduction allows motors rotate 96 wheels easily.

Now the complete weight (with charged 2 battery boxes & 5 motors) - is ~ 1,4 kg.

I'll ask my mate to add some photo - now I don't have such ability(((

Edited July 26, 2013 by Jeka Jackson

[Doc_Brown]

That's awesome man! Thanks for the video, does the RC unit do the steering?

[Jeka Jackson]

That's awesome man! Thanks for the video, does the RC unit do the steering?

Thanks!

Yes & no))), rc unit servo is used to control pneumatic switch (diff lock/unlock), cause it has only 45 degree turn angles & it's not enough. For steering I've used M-motor, it is also connected to rc unit (additional grey channel)

Also, I don't like to use servo for steering in "slow" models, cause using another schemes allow to fix selected directions.

[Doc_Brown]

Thanks!

Yes & no))), rc unit servo is used to control pneumatic switch (diff lock/unlock), cause it has only 45 degree turn angles & it's not enough. For steering I've used M-motor, it is also connected to rc unit (additional grey channel)

Also, I don't like to use servo for steering in "slow" models, cause using another schemes allow to fix selected directions.

Cool thanks for that! I understand the problem with selecting direction using the RC servo. My next project will be "real" RC. hehe

Keep up the good work.

[rm8]