J1A1H XXL Torque Monster Buildup........

[Jahay]

New Compilation vid of the truck...
http://www.youtube.com/watch?v=yxET4OFe7mM

Im now seriously looking to carry out a centre diff mod and i am going to try and utilise my current driveshafts.
I think the slipper diff is the way to go as it can take some impact from bad landings etc... plus its smaller and therefore lighter....

I just need to work out a way of getting a decent mount figure out a way of fitting it to the savage....

[suicideneil]

I think a switch to plastic spurs is needed- even with a non-hardend steel spur it will still eat pinions pretty quickly, especially ones that arent hardend ( well ) either; got to bear in mind that the pinion spins twice roughly for everytime the spur spins once, so the pinions will wear out alot quicker. A locked down slipper should help prevent too much spur-melting slippage.

[Jahay]

neil i would be happy to change spurs on a more frequent basis as they are simple and quick to change...

If i use a plastic spur, does that mean my metal pinion shouldnt really experience any wear???
So what are the toughest brand of plastic spurs then???

[suicideneil]

The pinions will pretty much last for years when used against plastic spurs, especially hardend ones- aluminium pinions will wear don faster but still last a long time ( seen a few pics, they end up with teeth that look like a circular saw blade! )

Generally speaking 99% of spurs are made form nylon, pretty tough material that doesnt wear down too quickly unless you set a realy bad mesh or you land on-throttle ( usually chip a few teeth off doing that once too often ). I've ran the same spurs for dozens of sessions and only ever damaged them from a melted slipper or bent motor mount (whole motor swung towards the spur and the pinion ate the teeth off it- 30mph crash into concrete steps will do that... ).

You may get lucky and find some delrin spur gears from somewhere like integy or gpm ( actually one of the few good parts they make ), but otherwise the stock spurs will* be fine.

*more than likely anyway...

[blueb8llz]

awesome truck! hey was the grass wet or something in the video. how come your truck slides around like that in grasss?

[Jahay]

thanks for the help neil... will take that all on board, and look into the delrin gears... If you can help in the slipperential section please do so... Im asking about Mounts and the slipperential... THANKS

Blue - in some parts of the vid, the truck is running just rear wheel drive, where it looks obvious that it is sliding around way to easily. But other times when i am doing donuts, its just gd control. usually the grass grips too much and flips it over. Thanks!

[Jahay]

So a little update on the truck and whats been going on.....
I have been having a lot of problems recently with my steering:
- Getting full throw (motor mount is in the way so needed to relocate the servo
- Stripping 2 alloys servo horns (dont know how)
- Ripped the plastic steering bar that connects to both steering rods and steering posts! (Replaced with a metal one and screws continouslly fall out!)

willl get pics of this up tonight.

Problems with the tranny holding together and pinions stripping:


Tires blowing


I also destroyed one of my HD Axle extenders (will get pics later) i think i overtightened the bolt and it just snapped off were the thread was!

Some pics of the truck at the moment

Too solve my Steering issues, i was going to get the Golden Horizons Steering Bell Crank Servo saver steering assembly... Has anyone got any comments to make on it? and where is the cheapest place to get one as they are quite expensive... ebay???



Also to avoid the problems i am currently having, i am looking into a Centre Diff and mount... Probably going to go with a slipperential. Should change the way the truck handles a little and also get rid of the weak tranny that keeps blowing. If it cant handle the 6s how will it handle 9s!!!!!

Anyway here is a new extremely short vid of the truck at the woods near me. I only got 3 jumps in before the steering assembly broke on me! But the day before i was doing 10-12ft high jumps and experiencing very bad landings and everything was fine on the truck. Its holding up to abuse very very well... The only weakpoints i have found currently are the steering and tranny.

http://www.youtube.com/watch?v=mS9ziX12FaM

[suicideneil]

If your screws keep falling out like that then just use some blue threadloc & apply it the day before hand. Im suprized you're having such bad tranny issues really- I;ve seen a few flux & converted nitro savage trannies have issues, but not quite so bad as yours; centerdiff would be a great durability upgrade, and Mike has the generic version in stock currently, you'd just have to mount it to a custom bottom plate/ skid etc ( the Candyman could help you as he's UK based & a God of custom fabrication for r/c related stuff ). Ebay would be your cheapest option for alloy steering parts, though have a good rummage for other brand parts just incase ( like GPM or some other 'off' brand stuff ).

Flies pretty well for such a big truck, that 'clop' sound as it lands is kinda disconserting though

[_dV]

How are the cheapo alloy big bores holding up? Any leakage?

Shocks mounts also look a bit diff to the stock. Would they be able to be drilled to 4mm?

I've seen that happen before with the axle extenders. Third post down

[Jahay]

Originally Posted by suicideneil

If your screws keep falling out like that then just use some blue threadloc & apply it the day before hand.
centerdiff would be a great durability upgrade, and Mike has the generic version in stock currently, you'd just have to mount it to a custom bottom plate/ skid etc ( the Candyman could help you as he's UK based & a God of custom fabrication for r/c related stuff ). Ebay would be your cheapest option for alloy steering parts, though have a good rummage for other brand parts just incase ( like GPM or some other 'off' brand stuff ).

Flies pretty well for such a big truck, that 'clop' sound as it lands is kinda disconserting though

The screw can not be threadlocked as it goes into plastic. Ill see what i can do. I have now managed to strip 2 aluminium servo horn.
What are the strongest servo horns out there for a futaba fitting?

I have been speaking to candyman and he has agreed to help me out. Havent decided what exactly i am going to do regarding the CD but i have a couple options. Just a little limited by funds currently.

I have my eye on the GH Steering bell crank kit so ill wait for that.

Also regarding the loud bangs and the truck on the jumps...
It is a large truck and i think that when i jump next time i will use my plastic shocks which allow full travel.
I guess it was hitting the ground hard as i was using my lowered shocks set up for handling.
But although it was hitting the ground hard, we all know the savage can take that sort of abuse.

@dv The alu big bores after these jumps (and i have done some big ones) have held up extremely well and i am very very happy with them considering the price i got them for. I am still eventually going to get the titanium shock shafts for them, but none have bent thus far and i am pleased.

Regarding the shock mounts, i know of people drilling them to 4mm and using a thicker screw... But people did that with larger shocks like LST and Baja shocks.
Its not necessary but i will def look into it eventually.

I saw that issue with the axle extenders... i think i may have just tightened it way too much. My wheel came off just driving in a straight line!

The truck is not out of commision for a little bit until i can get my steering sorted out. But my Steering servo arm is restricted and hitting my motor mount. So realistically i have to do my CD and Motor mount installation so i can place the steering servo back in its original location and give me the space needed for the servo arm to move if you catch my drift....

[Jahay]

Got some more pics... And need some help...

Anyway here is the result after overtightening the nut on my axle... Drove 10 seconds and literally fell off.



I have been having bad steering problems recently... Mainly because my motor mount is getting in the way of my servo horn. So i had to move my servo outside of the TVPs... So i had to do a custom temporary job and wondering what else i could use which is stronger and more reliable... Some pics of what i have had to do...



[IMG][/IMG]

I was also experiencing steering throw problems and found out i was being obstructed by my steering bar... So i found where it was hitting and dremeled it to work properly... here is what the after math after one cart wheel



This is why i have decided to go with the GH steering assembly....

But has anyone got any advice one what i can do to replace the temporary screw that goes between my servo saver and my servo? What other things would you use?

I am thinking once i put my centre diff in and mount the motor off the motor plate, then i will be able to return the steering servo back within the tvps and use the stock connecting arm, but for now i need something else.

[Jahay]

A few things just to liven this post up a bit...

Here is my temporary steering assembly. I made it out of combining a GPM Steering assembly and the stock servo saver. I will be using this till i have funds to get the GH Assembly...





My new tyres just for jumping purposes... My smaller wheels do not have the weight to give me good control over the length of the truck in the air... I originally ordered Joes but these MOABS came by accident. I dont really care now and i think the moabs have a thicker side wall for soaking up heavy landings correct?





After a bash on the weekend and after a bad crash (will get the vid up later)

I shredded my pinion if you can see it in the pic below...


And i am not entirely sure, but my rear shock tower shouldnt be bent this far forward correct?



Is it time for a new one?

[Gdot]

haaa my towers did that

[Jahay]

some are saying, that it should be fine for now... some are saying i should change it?
Maybe ill run them for a little longer, when it gets worse, ill change them

[_dV]

I would say change now to avoid possible shock damage. You would be suprised how much further they bend under impact. I'm trying to devise a way to support the back of the tower for my build.