RCCrawler Forums

Rikpal · 06-29-2005, 04:59 AM

I decided to make Pitbull more realistic and scale.
So I wanna slap a 3 speed tranny inside the puppy.

There are 3 goals I wanna reach to consider the new release a success.
1) The replacement of the juggy tranny with the 3 speed big rig tranny.
2) An increased center ground clearance.
3) The conservation of all the previous features (lights, winch, interior...)

These mean that the structure of the rig will be almost completely rebuilt.
I won't mod the parts I already built. I'll build new parts.
I disassembled the driveline to see how and if the new tranny will fit.
It fits. It's a tight fit, but it seems to fit.

This is a list of the things I think I have to build/change:
• T-case
• Tranny braces
• Frame rails
• Lifted center skidplate.
• Links (cause they attach to the skid now)
• Steering servo position.
• Winch servo and drum position
• Shifting servo position
• Electronics positions
• Lights power source
• Lights wiring

Now some thinking phase pics.
Top view.

Top close up.
I'll probably mount the new tranny with an inclination.
This should give me a more compact (in height) thing under the hood
and more room on one side of the front section of the rig.

Bottom view.
I mounted the body here (before turning the rig ).
I've already lowered the body about 5/7 mm.

Front view.
(That's upside down but it's more clear to see like this)

Opinions?

Rockinrockcrawler · 06-29-2005, 05:17 AM

Very nice but i think bigger tires are good

Rikpal · 06-29-2005, 07:48 AM

No thanks ;)
The idea behind this rig is to be as much scale as I can.
I think these tires are big enough.
They are 100 mm tall that in 1:10 scale meansmore or less 39"

Some pics to show the assembled truck

http://rikpal.golem100.com/rc/images...on_img/001.jpg
http://rikpal.golem100.com/rc/images...on_img/003.jpg
http://rikpal.golem100.com/rc/images...on_img/007.jpg

Frkan · 06-29-2005, 10:24 AM

are those kyosho landmax tires?

Rockinrockcrawler · 06-29-2005, 01:07 PM

oh yeha htose are good i thought they were tamiya xc-01 tires. Nice. Wonder what the imex 2.2 boggers are in scale?

IronOx · 06-29-2005, 01:32 PM

hey whered you get the tranny? and also what are your plans on how to do the t-case? i have a project that me and a couple friends are doing it calles "neo bruiser" so if you could let me know some stuff like were to get the tranny, and how your gonna do the t-case. thanks

ironox

Frkan · 06-29-2005, 03:02 PM

Quote:

Originally Posted by Rockinrockcrawler

oh yeha htose are good i thought they were tamiya xc-01 tires. Nice. Wonder what the imex 2.2 boggers are in scale?

no the xc tires are bfg mudd terrains, these are more like toyo open countrys

as for the boggers imex site says they are 4.75 inches tall making them 47.5 inchers in 1:1 scale but they would be 25 inches wide in 1:1, pretty unscale if you ask me although a crawler sitting on 22s is pretty unscale already

Rikpal · 06-30-2005, 07:53 AM

Thanks for comments guys.
Yes those are landmax tires.
Anyway even with the jero BFG The look was very scale ;)
http://rikpal.golem100.com/rc/images...ech_img/02.jpg
I agree with Frkan. Even if cool any 2.2 rim/tire is unscale in 1:10 family.
Mashers will be more or less as 39 inchers at 1:8 scale.
Landmax wheels has the wrong sidewalls but are the best compromize I could find.

I bought the tranny parts here: http://stores.ebay.com/WalawalaStore...toreviewQQtZkm
All the parts without screws/e-ring/bushings etc etc only the tranny parts.
As for the T-case take a look below ;)

Little update still in the thinking and positioning phase.

I'm playing with some ooooollllllldddddd 32 pitch Tamiya gears I had from old cars.
(I didn't trash anything)
The idea is to build a geared down T-case.
I think I find a couple of gears that could work fine to build the it.
The T-case itself will be integrated in the frame.
I mean the plates that will support the gear will act as cross member even.
T-case gears could be a combo of 20T and 52T, so this will add a 2,6:1 reduction.
So the ratios (using a 10T on the motor) will be 84,24:1 - 45,99:1 - 27,53:1.
Steering servo will be repositioned, but not so far from where it was.
A problem could be the winch.
There's no way to have it between the front frame rails as in the 2.0 release.

This is the tranny position at 95%. The pinion is a cut old gear that fit perfectly on the shaft.
I'll replace it with a drilled pinion.

Playing with the spur gear and the drive shafts.
The spur gear will be there. The inclination of the tranny allow me to raise a lot the output yokes.

Comparison between the new (left) and the old (right).
Note that the spur is almost completely between the rails. Of course there will be a skid to protect it.
The old skid was as high as it could be. There was a portion of the tranny inside the skid even.
You can see I have a lot of increased cleareance.

View of the old skid onto the new spur.
There's a lot of room between them that won't be with the new skid.
Thinking phase is satisfying me
Can't wait to have some more time to work

What do you think?

Frkan · 06-30-2005, 12:09 PM

goood!!! itll look more like a 1:1 with everything tucked further up.

IronOx · 06-30-2005, 12:37 PM

could you tell me the part numbers? gears and all. please and thank you.

ironox

Rikpal · 07-01-2005, 01:38 AM

I think you refers to the tranny, here you are man.

Tamiya*"B"*Parts for*56301
Item# 0005468
Plastic case

Tamiya*Gear Shaft*Bag for*56313
Item# 9400029
Shafts, Metal gears and so on...

Tamiya*Gear Bag for*56301
Item# 9335128
Plastic gears

Tamiya*"J"*Parts for*56301
Item# 9115047
Engaging wheels, bearings holder, spacers...

I have no idea about the parts I'm gonna use for the T-case,
they are very old and I have them laying around.

Hope this could help ;)

Rikpal · 07-04-2005, 04:50 AM

I'm still thinking and finding place for all the stuff, but I reserved a night for the puppy and built some things.

First a couple of body-on pics. The body sits lower and looks better.
The rear is still a bit high, but there's a lot of things removed, so the final weight will be different.
All the driveline parts are in place tho.

Note the center clearance.

Compared to the old.

Frame and tranny (tranny mounting brackets still to be done)

Rear suspension. I replaced the links and changed the geometry.
New top axle links mounts (nothing difficult

)

Close up of the T-case

Bottom view. Even the fron suspension has a new geometry.
There's no room to triangulate the upper link on top of axle.
I don't mind cause a panhard bar will be scaler

This could be the winch position if the pack will be so kind to let it fit

Front panhard bar study. it will be a tight fit with the steering servo.

Opinions, suggestion and comments are, as usual, welcome

ILoveRCRockCrawlin · 07-04-2005, 09:20 AM

looking good

who here gets that feeling he enjoys posting pics

XCUTIONER · 07-04-2005, 09:56 AM

how much did the complete tranny run you
is it beefy enough to handle a mag mayhem without blowing the plastic gears

oh yeah looks damn good to me

nd4spdbh · 07-04-2005, 10:27 AM

SWEET that this looks so scale in some of thoes pics man what a piece of work... also why would you use the panhard bar when you could just do a clasic 4 link set up? like you could move the upper link chassis mounthing positions in a little so you wont have axle slop. n e ways just a thought NICE TRUCK

Rikpal · 07-06-2005, 08:44 AM

Thanks all ;)

Xcutioner: What do you mean?
I know a guy that slapped it into a three axled Juggy/TXT with a BL system. He said it is very strong.

nd4spdbh: Pitbull had the classic 4link geometry when there was a juggy tranny inside it. Now there's no way to triangulate the upper links on the axle. I'm searching the more scaleness that I can and TJs have panhard bars.

I'm taking the inspiration from the Full tractio long arm suspension.

Now the update:
Well talking about "Tight fit" is an understatement here

There's so little room for the thing I'm going crazy thinking where to place all the parts.
Lowering the body reduced the room even more

The body has been lowered around 7 mm at the front and around 10 mm at the rear.

The winch won't be there. I'd love that place, but I have to place the battery somewhere

Talking about battery I copied an idea and I modded a juggy battery tray to fit.
Winch will prolly go near the motor right behind the front grill of the body.

The top axle rear link don't work. I mean they hit the battery tray at compression. The 3rd gear should be enough fast to give the rig the needing of a suspension travel to absorbe impacts, and not only to make the axles pivoting.
I have to shorten those links and build a new mount that increase the room between the axle and the tray.
I have an idea, but I'm not sure it will work.

I started to seriously think about the front suspension. Links position seems to work fine, but as I said there's no triangulation,
so I need a panhard bar. This is a real pain in the a** not only for the geometry issue, but (again) for the little room available.
I came up with a solution that seems OK.
Everything is in a semi mock up phase, but it seems to work fine.

Let's speak the pics. ;)

nd4spdbh · 07-06-2005, 11:30 AM

WOW REALLY TIGHT fit and i todally understand the need for scalness ... is that a word... that thing is sweet.

Artstu · 07-06-2005, 11:53 AM

wow very nice i lke it a lot

Rikpal · 07-13-2005, 02:40 AM

HEHEHEHEHEHE

Quarter elliptical rear suspension

Still thinking phase, but seems to work

Help me decide guys. I like it a lot, it's different and scale, but does it have sense?
I mean from what do you know about real rigs do you ever see a combo like this with coil over shocks at front end and quarter elliptical at rear?

fullmodtxt · 07-13-2005, 03:17 AM

Rikpal, great little truck! Leafs and a 4-link have been done succesfully. I think there was actually an article about it in one of the stateside 4WD magazines. I can't see exactly how the springs mount to the frame, but it looks like there is no shackles anywhere. The springs might swing on a different arc than the 4-link and could bind if there are no shackles. That's about the only thing I can see that you might want to look into, but it appears to function fine in the pics. You might even be able to eliminate the upper 2 links of the 4-link. The springs and lower links might be enough to solidly locate the axle.

06-29-2005, 04:59 AM	#1
Rikpal Quarry Creeper Join Date: Jan 2005 Location: Milan, Italy Posts: 323	Pitbull 3.0 (a new release LOL) I decided to make Pitbull more realistic and scale. So I wanna slap a 3 speed tranny inside the puppy. There are 3 goals I wanna reach to consider the new release a success. 1) The replacement of the juggy tranny with the 3 speed big rig tranny. 2) An increased center ground clearance. 3) The conservation of all the previous features (lights, winch, interior...) These mean that the structure of the rig will be almost completely rebuilt. I won't mod the parts I already built. I'll build new parts. I disassembled the driveline to see how and if the new tranny will fit. It fits. It's a tight fit, but it seems to fit. This is a list of the things I think I have to build/change: • T-case • Tranny braces • Frame rails • Lifted center skidplate. • Links (cause they attach to the skid now) • Steering servo position. • Winch servo and drum position • Shifting servo position • Electronics positions • Lights power source • Lights wiring Now some thinking phase pics. Top view. Top close up. I'll probably mount the new tranny with an inclination. This should give me a more compact (in height) thing under the hood and more room on one side of the front section of the rig. Bottom view. I mounted the body here (before turning the rig ). I've already lowered the body about 5/7 mm. Front view. (That's upside down but it's more clear to see like this) Opinions?

07-04-2005, 09:56 AM	#14
XCUTIONER Rock Stacker Join Date: Apr 2005 Location: Hebron Posts: 81	how much did the complete tranny run you is it beefy enough to handle a mag mayhem without blowing the plastic gears oh yeah looks damn good to me Last edited by XCUTIONER; 07-04-2005 at 10:05 AM.

06-29-2005, 05:17 AM	#2
Rockinrockcrawler Quarry Creeper Join Date: May 2005 Location: lost in vintage tamiya land. Posts: 305	Very nice but i think bigger tires are good

06-29-2005, 07:48 AM	#3
Rikpal Quarry Creeper Join Date: Jan 2005 Location: Milan, Italy Posts: 323	No thanks ;) The idea behind this rig is to be as much scale as I can. I think these tires are big enough. They are 100 mm tall that in 1:10 scale meansmore or less 39" Some pics to show the assembled truck http://rikpal.golem100.com/rc/images...on_img/001.jpg http://rikpal.golem100.com/rc/images...on_img/003.jpg http://rikpal.golem100.com/rc/images...on_img/007.jpg

06-29-2005, 10:24 AM	#4
Frkan Quarry Creeper Join Date: Jan 2005 Location: Crafty mexicans and your glass candy... Posts: 216	are those kyosho landmax tires?

06-29-2005, 01:07 PM	#5
Rockinrockcrawler Quarry Creeper Join Date: May 2005 Location: lost in vintage tamiya land. Posts: 305	oh yeha htose are good i thought they were tamiya xc-01 tires. Nice. Wonder what the imex 2.2 boggers are in scale?

06-29-2005, 01:32 PM	#6
IronOx Quarry Creeper Join Date: Jun 2005 Location: Northern CaliFOOLya Posts: 380	hey whered you get the tranny? and also what are your plans on how to do the t-case? i have a project that me and a couple friends are doing it calles "neo bruiser" so if you could let me know some stuff like were to get the tranny, and how your gonna do the t-case. thanks ironox

06-30-2005, 07:53 AM	#8
Rikpal Quarry Creeper Join Date: Jan 2005 Location: Milan, Italy Posts: 323	Thanks for comments guys. Yes those are landmax tires. Anyway even with the jero BFG The look was very scale ;) http://rikpal.golem100.com/rc/images...ech_img/02.jpg I agree with Frkan. Even if cool any 2.2 rim/tire is unscale in 1:10 family. Mashers will be more or less as 39 inchers at 1:8 scale. Landmax wheels has the wrong sidewalls but are the best compromize I could find. I bought the tranny parts here: http://stores.ebay.com/WalawalaStore...toreviewQQtZkm All the parts without screws/e-ring/bushings etc etc only the tranny parts. As for the T-case take a look below ;) Little update still in the thinking and positioning phase. I'm playing with some ooooollllllldddddd 32 pitch Tamiya gears I had from old cars. (I didn't trash anything) The idea is to build a geared down T-case. I think I find a couple of gears that could work fine to build the it. The T-case itself will be integrated in the frame. I mean the plates that will support the gear will act as cross member even. T-case gears could be a combo of 20T and 52T, so this will add a 2,6:1 reduction. So the ratios (using a 10T on the motor) will be 84,24:1 - 45,99:1 - 27,53:1. Steering servo will be repositioned, but not so far from where it was. A problem could be the winch. There's no way to have it between the front frame rails as in the 2.0 release. This is the tranny position at 95%. The pinion is a cut old gear that fit perfectly on the shaft. I'll replace it with a drilled pinion. Playing with the spur gear and the drive shafts. The spur gear will be there. The inclination of the tranny allow me to raise a lot the output yokes. Comparison between the new (left) and the old (right). Note that the spur is almost completely between the rails. Of course there will be a skid to protect it. The old skid was as high as it could be. There was a portion of the tranny inside the skid even. You can see I have a lot of increased cleareance. View of the old skid onto the new spur. There's a lot of room between them that won't be with the new skid. Thinking phase is satisfying me Can't wait to have some more time to work What do you think?

06-30-2005, 12:09 PM	#9
Frkan Quarry Creeper Join Date: Jan 2005 Location: Crafty mexicans and your glass candy... Posts: 216	goood!!! itll look more like a 1:1 with everything tucked further up.

06-30-2005, 12:37 PM	#10
IronOx Quarry Creeper Join Date: Jun 2005 Location: Northern CaliFOOLya Posts: 380	could you tell me the part numbers? gears and all. please and thank you. ironox

07-01-2005, 01:38 AM	#11
Rikpal Quarry Creeper Join Date: Jan 2005 Location: Milan, Italy Posts: 323	I think you refers to the tranny, here you are man. Tamiya"B"Parts for56301 Item# 0005468 Plastic case TamiyaGear ShaftBag for56313 Item# 9400029 Shafts, Metal gears and so on... TamiyaGear Bag for56301 Item# 9335128 Plastic gears Tamiya"J"Parts for*56301 Item# 9115047 Engaging wheels, bearings holder, spacers... I have no idea about the parts I'm gonna use for the T-case, they are very old and I have them laying around. Hope this could help ;)

07-04-2005, 04:50 AM	#12
Rikpal Quarry Creeper Join Date: Jan 2005 Location: Milan, Italy Posts: 323	I'm still thinking and finding place for all the stuff, but I reserved a night for the puppy and built some things. First a couple of body-on pics. The body sits lower and looks better. The rear is still a bit high, but there's a lot of things removed, so the final weight will be different. All the driveline parts are in place tho. Note the center clearance. Compared to the old. Frame and tranny (tranny mounting brackets still to be done) Rear suspension. I replaced the links and changed the geometry. New top axle links mounts (nothing difficult ) Close up of the T-case Bottom view. Even the fron suspension has a new geometry. There's no room to triangulate the upper link on top of axle. I don't mind cause a panhard bar will be scaler This could be the winch position if the pack will be so kind to let it fit Front panhard bar study. it will be a tight fit with the steering servo. Opinions, suggestion and comments are, as usual, welcome

Sponsored Links

07-04-2005, 09:20 AM	#13
ILoveRCRockCrawlin RCC Addict Join Date: Dec 2004 Location: Central NY Posts: 1,980	looking good who here gets that feeling he enjoys posting pics

07-04-2005, 10:27 AM	#15
nd4spdbh Rock Crawler Join Date: Mar 2005 Location: Dude on my dirt bike in SoCal!!! Posts: 949	SWEET that this looks so scale in some of thoes pics man what a piece of work... also why would you use the panhard bar when you could just do a clasic 4 link set up? like you could move the upper link chassis mounthing positions in a little so you wont have axle slop. n e ways just a thought NICE TRUCK

07-06-2005, 08:44 AM	#16
Rikpal Quarry Creeper Join Date: Jan 2005 Location: Milan, Italy Posts: 323	Thanks all ;) Xcutioner: What do you mean? I know a guy that slapped it into a three axled Juggy/TXT with a BL system. He said it is very strong. nd4spdbh: Pitbull had the classic 4link geometry when there was a juggy tranny inside it. Now there's no way to triangulate the upper links on the axle. I'm searching the more scaleness that I can and TJs have panhard bars. I'm taking the inspiration from the Full tractio long arm suspension. Now the update: Well talking about "Tight fit" is an understatement here There's so little room for the thing I'm going crazy thinking where to place all the parts. Lowering the body reduced the room even more The body has been lowered around 7 mm at the front and around 10 mm at the rear. The winch won't be there. I'd love that place, but I have to place the battery somewhere Talking about battery I copied an idea and I modded a juggy battery tray to fit. Winch will prolly go near the motor right behind the front grill of the body. The top axle rear link don't work. I mean they hit the battery tray at compression. The 3rd gear should be enough fast to give the rig the needing of a suspension travel to absorbe impacts, and not only to make the axles pivoting. I have to shorten those links and build a new mount that increase the room between the axle and the tray. I have an idea, but I'm not sure it will work. I started to seriously think about the front suspension. Links position seems to work fine, but as I said there's no triangulation, so I need a panhard bar. This is a real pain in the a** not only for the geometry issue, but (again) for the little room available. I came up with a solution that seems OK. Everything is in a semi mock up phase, but it seems to work fine. Let's speak the pics. ;)

07-06-2005, 11:30 AM	#17
nd4spdbh Rock Crawler Join Date: Mar 2005 Location: Dude on my dirt bike in SoCal!!! Posts: 949	WOW REALLY TIGHT fit and i todally understand the need for scalness ... is that a word... that thing is sweet.

07-06-2005, 11:53 AM	#18
Artstu Rock Stacker Join Date: Jan 2005 Location: Abbotsford, BC, Canada. Posts: 62	wow very nice i lke it a lot

07-13-2005, 02:40 AM	#19
Rikpal Quarry Creeper Join Date: Jan 2005 Location: Milan, Italy Posts: 323	HEHEHEHEHEHE Quarter elliptical rear suspension Still thinking phase, but seems to work Help me decide guys. I like it a lot, it's different and scale, but does it have sense? I mean from what do you know about real rigs do you ever see a combo like this with coil over shocks at front end and quarter elliptical at rear?

07-13-2005, 03:17 AM	#20
fullmodtxt Quarry Creeper Join Date: May 2004 Location: Hartford, Connecticut Posts: 355	Rikpal, great little truck! Leafs and a 4-link have been done succesfully. I think there was actually an article about it in one of the stateside 4WD magazines. I can't see exactly how the springs mount to the frame, but it looks like there is no shackles anywhere. The springs might swing on a different arc than the 4-link and could bind if there are no shackles. That's about the only thing I can see that you might want to look into, but it appears to function fine in the pics. You might even be able to eliminate the upper 2 links of the 4-link. The springs and lower links might be enough to solidly locate the axle.

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