sperera's baja experience begins

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had a fruistrating night with the baja. put the new shocks on, they come with this little bit of hose that goes on the bolt, takes up the slack between bolt and shocker cap, rear ones didnt fit, lucking I had some nitro hosing left over from way back that I managed to stretch over the rear bolts as they are bigger and got them on, gave it a quick squirt in my garage and lightly tapped the beetle, steering horn slipped again (happened when I had a head on with a mates FS) on weekend. Must have stripped the splines, now im trying to get a servo horn today so I can be right for the long weekend! Blardy hell! >:( why couldnt I discover this during the week when I had more time to organise parts! The servo is a hitec 805bb so im hoping the output gear that the horn goes onto aint buggered as well! I cant afford a 5755 right now after spending up on the parts above!
 
That is SOOOO frustrating. I have been right there with you. Think you have it all ready and BAM something simple tears. Have you had a look at the servo, is it ok? Hope its just the horn.
 
Couldnt tell you how furstrated I was last night, it was real late and I wanted to go to bed, just put it all back together and it lets go. now ive got to rip out the radio tray and take the servo out.
i think the output gear is also cactus but I cant confirm yet. its a plastic gear so logic is telling me that if the horn is slipping both the horn and the gear are rooted. just confirmed my local hobby shop don't have any 1/4 scale servo's in stock, or horns or gear sets. Fan-farking-tastic. One more hobby shop to try but I don't like using them, but im desperate and want this running for the long weekend starting tommorow!
 
got another 805bb and installed it sat, still working well. had my first part failure yeasterday at the track, looks like it might have been my fault anyway. pinion gear came loose and destroyed the spur gear. i didnt put a c clip on which may have been the cause but the bearing has also come out of the gear carrier, not sure how or why.

heres a couple of pics of the baja after a fifteen min run at the track yeasterday.
 
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LOL nice one.

its all clean again, well except the radio tray.

anyone know if I can drown my radio tray (servo's and radio box attached) in wd40 to clean it up a bit? will it do any damage to the elec's?
 
i take out the radio tray every time I give the baja a wash but the servo's radio box and radio tray are filty, other than cleaning it with a rag bit by bit I was wondering if I could just spray the whole thing with WD40 and let it air dry.
 
heres a couple of quick vids of my baja @ hampton park BMX track.

there's more to come but my modem died last night.



 
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guys i need your advise please. yeasterday i won an auction on ebay from a set of front desperado rims and tires, i think the tires are bowtie (look kinda like badlands). im going to get a set of wheel adaptors so I can run HPI style rims and tyres on my baja.

what i didnt think about was my baja is 4wd belt driven, what happens if the rolling diameter front and rear arnt the same, will this cause premature wear on the belt or drivetrain?

I don't plan on running the hpi rims and tyres until I have a complete set of four.

Am i worrying about nothing here?
 
I'm interested to read what people say.
I reckon that bigger fronts, smaller rears will induce understeer; bigger rears, smaller fronts will induce oversteer.
I suppose if the terrain you're on is dusty / slippery enough then it won't make much difference anyway !! :D:D
 
yeah slippery conditions should make it all slip together which is fine, plus im thinking there would be bugger all difference in diameter front to rear anyway.
 
Well if its down to rotation lets put it this way. If your spur and rear wheels rotate at 1-1 and you have smaller tyres on the front they (lets say) will rotate at 1.5-1,thus tyre wear and strain on all drive train parts.
Its like if you had a 44T spur and a 44T pinion for example both would turn @ 1-1.If you had a 44T spur and a 22T pinion the pinion would turn @ 1.5-1 thus making the pinion turn faster than the spur.The same as in different size tyres on a 4 X 4 creating drive stress and uneven tyre wear.
Do you see what I mean or am I not making sense?
J.
 
As the FG doesn't have a central Diff, then what Atom says if true, i.e. there might be a few ocasions where it's a good thing to have different diameters.

thinking abot the drivetrain layout, the rear gets the drive first, with a belt take off to the front, so if you are going to have different diameters, you want the bigger on the front so that they spin slightly (if it was smaller fronts it would act like a drag brake and skid slightly).

But on the whole I'm with Voo, I think that you want identical diameteres front and back, otherwise the tyres will allways be fighting each other and putting strain on the drive components, which you may come to regret in a months time.
 
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