Go Back   RCCrawler Forums > Miscellaneous > Chit Chat
Loading

Notices

Thread: Finally went through with it

Reply
 
LinkBack Thread Tools Display Modes
Old 09-08-2007, 01:33 PM   #21
I wanna be Dave
 
Join Date: Sep 2005
Location: USA
Posts: 11,196
Default

HOLY CRAP... Thats sweet... I also didn't know these things were being made... Where is a good place to watch some Videos of these MONSTERS.
run2jeepn is offline   Reply With Quote
Sponsored Links
Old 09-08-2007, 01:37 PM   #22
I wanna be Dave
 
Join Date: May 2006
Location: Arlington, VA
Posts: 3,377
Default

http://www.youtube.com/results?search_query=rc+pullers
Thorsteenster is offline   Reply With Quote
Old 09-08-2007, 01:39 PM   #23
Newbie
 
Join Date: May 2005
Location: Holland
Posts: 21
Default

Some older vids (just click on the pics): http://home.hetnet.nl/~cyril-wichers/video.htm
Micropuller is offline   Reply With Quote
Old 10-01-2007, 04:30 PM   #24
Newbie
 
Join Date: May 2005
Location: Holland
Posts: 21
Default

Well, the first chips have been made!

Normally we use 1:8 scale buggy diffs, with a kind of planetary gear reduction in the rear wheels, but due to the low Rpm of this engine that's not an option. Running a buggy diff without the panetary gears on an engine like this is out of the question, so I needed a bigger diff.

I had a look at a 1:5 scale diff, but I thought that was just too big. Besides, I would have had to modify hat also, because these diffs use straight gears, instead of bevel gears.

So, in the end I decided to make my own diff.

The spider gears are aproximately the same size as those used in bigscale diffs (module 1), only I used 6 instead of 4 of them.
The crown and pignon gears are huge (module 2), with a reduction of 1:1.5.
The gears were bought and modified, everything else is scratch-built. When everything is finished, all the gears are going t be hardened.

Completed diff:


The diff next to a 1:8 scale Ofna diff.


Side cover removed:


Spider gears removed:

Last edited by Micropuller; 12-20-2007 at 05:58 PM.
Micropuller is offline   Reply With Quote
Old 10-01-2007, 04:39 PM   #25
20K Club
 
Harley's Avatar
 
Join Date: Jul 2004
Location: Sending illegals home one Hayabusa at a time.
Posts: 22,981
Default

Freaking crazy!

Really can't wait to see it running!
Harley is offline   Reply With Quote
Old 10-01-2007, 04:47 PM   #26
I wanna be Dave
 
Join Date: May 2006
Location: FOUR 8 OH
Posts: 4,913
Default

Its a mini boxer motor! You guys are completly insane with this stuff!
2JSC is offline   Reply With Quote
Old 10-01-2007, 05:09 PM   #27
Quarry Creeper
 
Join Date: Jul 2007
Location: Kentucky
Posts: 445
Default

http://www.youtube.com/watch?v=mutb7KgA9NM

V-12
GreenRiver is offline   Reply With Quote
Old 10-01-2007, 07:10 PM   #28
Rock Crawler
 
Join Date: Jul 2006
Location: Kelowna BC Canada
Posts: 691
Default

this is better


http://www.youtube.com/watch?v=aWIWxN06t10
fishfever is offline   Reply With Quote
Old 10-01-2007, 08:11 PM   #29
RCC Addict
 
Join Date: Feb 2005
Location: Crawlifornia Uber Alles
Posts: 1,146
Default

holy diff batman! can't wait to see this finished! i have now subscribed to this thread.
gregrocks90046 is offline   Reply With Quote
Old 10-01-2007, 09:23 PM   #30
~THE SCALE SHOP~
 
Join Date: Apr 2006
Location: KILLEEN TX
Posts: 10,056
Default

no turning back now..........
STANG KILLA SS is offline   Reply With Quote
Old 10-03-2007, 02:48 PM   #31
Winner of the '07 RCC dumbass award!
 
Join Date: Nov 2006
Location: Up on a Mountain, out in the Woods
Posts: 661
Default

Quote:
Originally Posted by fishfever View Post
That engine just blew my mind.

All the other V8's and V12s were cool.....

But that 609.... Wow... just wow!

Makes me want to go back to school!



Any updates on your puller?

The engine you selected, what a Hoss...

The diff... Really nice man! I want one!


Isn't there going to be a limit on how much power a given size tire can deliver to the ground?

Do you plan on gearing it for some SERIOUS rpm, or slow and powerful?

Looking at your ring and pinion, I would say your going for insaneo wheel speed. Correct?

Also, will you be handing out safety glasses for all the dirt that is going to be flying?!!
WheelChair is offline   Reply With Quote
Old 10-03-2007, 03:10 PM   #32
Newbie
 
Join Date: May 2005
Location: Holland
Posts: 21
Default

Quote:
Originally Posted by WheelChair View Post
Any updates on your puller?
Come on man, give me a break! Where do you think these parts come from, some kind of kit? Making that diff took me the best part of my weekend

Quote:
Originally Posted by WheelChair View Post
Isn't there going to be a limit on how much power a given size tire can deliver to the ground?
Yeah, our pullers get very hard to control once the wheelspeed exceeds 60MpH, due to the tires balooning.

Quote:
Originally Posted by WheelChair View Post
Do you plan on gearing it for some SERIOUS rpm, or slow and powerful?
Looking at your ring and pinion, I would say your going for insaneo wheel speed. Correct?
Total gear reduction (just the diff) is 1:1.5 Estimated max. RpM of the engine with this gearing (according to the engine manufacturer) will be 7000-7500, giving a wheelspeed of 90-95MpH
But seriously, gearing it any lower will probably cause the engine to overrev, something these big guys don't particularly like to do. I don't expect this puller to be a winner, because if I ever get it running well, it's going to be just rediculously overpowered. It's going to be more for show then go.

Quote:
Originally Posted by WheelChair View Post
Also, will you be handing out safety glasses for all the dirt that is going to be flying?!!
Nah, if they just stand to the side and keep their distance, everything will probably be Ok (I hope )

Last edited by Micropuller; 10-03-2007 at 04:21 PM.
Micropuller is offline   Reply With Quote
Old 10-03-2007, 07:20 PM   #33
Winner of the '07 RCC dumbass award!
 
Join Date: Nov 2006
Location: Up on a Mountain, out in the Woods
Posts: 661
Default

Quote:
Originally Posted by Micropuller View Post
Come on man, give me a break! Where do you think these parts come from, some kind of kit? Making that diff took me the best part of my weekend
Didn't mean to bust your balls man, that diff is sawheet!

...Guess I should have looked at the post date...

Lookin killer man
WheelChair is offline   Reply With Quote
Old 12-20-2007, 04:25 PM   #34
Newbie
 
Join Date: May 2005
Location: Holland
Posts: 21
Default

Well, it's been a while, but finally here's an update on the project.

The first thing that had to be done was to fire up the engine, and see what we're dealing with.
So I started out with making a solid stand for it:


Clamp it down and hold on tight...


To say we weren't disappointed by the sound would be the understatement of the century. We were standing in a riding stable, and the next day the owner told me that the horses that were standing in another stable nearby started panicking when we started the engine!

So, let's continue with the rear-axle.
The first thing that had to be done was to make the pinion and drive axles and connect them to the gears. The pinion wasn't too hard to do, because the gear was big enough to simply screw it to a flange.


The drive axles were harder to connect, because the diff gears are a lot smaller. At first I thought of simply welding the axles to the gears, but in the end I decided to put a pin through the axles and mill a slot in the gears.


Then I made the axle-housing. The diff and the axles run on seperate ball bearings. On the outside the axles are held in place by a circlip, so they can't move in or out.




I made a couple of flanges to fit the drive axles. The rims will be mounted to these.




And this is what it looks like with the tires mounted:


Now that's finished, I can start on the hardest part of this project, the clutch.
Micropuller is offline   Reply With Quote
Old 12-20-2007, 06:04 PM   #35
Quarry Creeper
 
Join Date: Jun 2004
Location: aurora, CO
Posts: 472
Default

pure and simple, its a work of art!!
extreme is offline   Reply With Quote
Old 12-20-2007, 07:30 PM   #36
Quarry Creeper
 
Join Date: Oct 2007
Location: Pennsyltucky
Posts: 265
Default

Super nice work mang!
F250 is offline   Reply With Quote
Old 12-20-2007, 08:28 PM   #37
Pebble Pounder
 
Join Date: Feb 2007
Location: Gloucester
Posts: 105
Default

These things are bad a** !
A guy down the road from me has a clod based puller , with 40lbs of ballast on the front . constantly breaks things . I thought his was cool , but this ... can't wait to see it in action
Frank3 is offline   Reply With Quote
Old 12-20-2007, 09:00 PM   #38
I wanna be Dave
 
FrankyRizzo's Avatar
 
Join Date: Apr 2005
Location: Vegas
Posts: 7,172
Default

Quote:
Originally Posted by Usmc8541 View Post
Im a power hungry SOB, Id run it off of 30% Nitro. I did it to my weedeater when I was a kid, worked great. I could cut down some pretty thick shrubbery.
We did that to my buddies go ped when they first came out and it wouldn't shut off.
FrankyRizzo is offline   Reply With Quote
Old 12-20-2007, 09:01 PM   #39
I wanna be Dave
 
Join Date: Dec 2005
Location: Orlando
Posts: 7,420
Default

You're crazy.
ColquittCustom405 is offline   Reply With Quote
Old 12-21-2007, 03:35 PM   #40
Newbie
 
Join Date: May 2005
Location: Holland
Posts: 21
Default

Quote:
Originally Posted by ColquittCustom405 View Post
You're crazy.
Don't know if that was directed at me, but if it was, I'll take that as a compliment!

Last edited by Micropuller; 12-21-2007 at 03:37 PM.
Micropuller is offline   Reply With Quote
Reply



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 02:59 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.
Copyright 2004-2014 RCCrawler.com