gimp chump

Just broke in my Axial .28 spec1
I leaned it out till my temps got to between 220-240
any more then that and i can notice a drop in performance but my savage wont wheelie.
I read a lot about all the low end the axial has so i got 46/20 gearing to try and tame it a bit
Is that gearing too tall for wheelies or should i start looking for problems somewhere else?

mazdab2600

20/46
wow that thing must go like stink.once it get going.

spur divided by cb = gearing
46/20=2.3:1
so try a
18t cb
46/18=2.56:1

my lrp spec3 i got
49/17=2.88:1
and i can still lift big joe's and a total of 15lbs(custom rollcage/skid/etc) of truck no problem.

rowdie15

That's a 2.3:1 gear ratio. I would think that is pretty tall. With the k4.6 motor from HPI and stock gearing 47/17 (ratio 2.76:1) the truck wheelies just fine. You should try to be closer to 3:1. With low end grunt you shouldn't have to go that low.

SAVAGEJIM

Yep, your gear ratio is way too high. You will want at least a 15T/49T combo or a 16T/49T combo if you want wheelies on command. Also, your Axial might have a ways to go before being fully broken in and leand for performance. That too will give you some wheelies even on 20T/46T combo.

mazdab2600

read up
jim know's nitro.
he's been here longer.

gimp chump

cool thx guys i think i will try 46/16 i got the savagex slipper and my 46 spur is the only one thatll work

and it does go like stink lol! It does lift up a little too just no wheelies

munro300

Im pullin wheelies with a 18/49 gear set up on my old axial .28 no problem, get rid of the 46 tooth spur.

lauderboy

i have the same problem and i have tried lots but still no joy "i miss my k 4.6" luv a wheelllllllllllllllllllllllllie

go-to

My Feedback: (2)

Agreed...my Axial .28 and Savage X SS with 3-speed flips over backwards with NO effort on the 18/49 combo. I'm gonna try a 20T clutch bell and see if it tames the wheelies some.

SAVAGEJIM

If the 46T Robinson Racing steel spur is the only spur that will fit, then tri to get a 14T CB. This will get more torque to the wheels and should give your Spec1S the gear ratio to get wheelies on demand torque at the rear wheels.

By the way, can you post a sound with vid of you engine running? I want to hear what it sounds like at idle, while your are doing dead-stop full trigger pulls and some mid-RPM range sounds. I still think you Axial either might not be fully broken in and/or you have your needles still set too rich.

lauderboy

so is 48/14 a good move then?

go-to

My Feedback: (2)

You can really tell from the sound? I can do that with cars...maybe I should try the same ear with my Savage. If I posted a sound of mine would you be kind enough to offer the same advise?

rcnitrohead

Tuning by sound is the PRO way to do it, no offense but temp guages are kind of for noobs. All you need to do is listen to the engine and you can get it tuned right. I have never owned a temp guage and dont plan to buy one, all of my engines have run spectacular without them. (Except for my first, TRX 2.5, two reasons for that. 1: Its a Traxxas engine[:'(] 2: I was a nub and it was my first engine) Learn to tune by sound, its much more usefull than any temp guage, unless you memorize the optimum operating temp and just set it from there....[8D]

lauderboy

can sum1 please tell me if 48/14 is a good idea cos i wanna swap em out now

rcnitrohead

Thats really low unless you are running less than a .26 engine.. What engine r u running?

black mamba

My Axial 28 will easily wheelie with 17/47 and even taller 19/47 gearing. It even popped wheelies during break in.

SportsFans

Same with the .32 Axial with 19/47, still wheelied until I added the reverse module and additional servo, man what a load, but cool. Added that load to already worn aluminum clutch shoes so really no wheelies and caused the the shoes to wear even faster. So I have new Nova shoes and waiting on Mugen 1.0m springsto come in. I will be changing gearing to 17/49. Hopefully by tomorrow I will have wheelies again when my springs get in. Man that tall gearing really puts a wearing to your drive train (alot of stress) specially when driven off road.

lauderboy

so 17/47 is the best ? should i order some and get ready for my wheelies oh and i take it that my idea of 48/14 is not a good 1 and if not why not [8D]

HerrSavage

18/47:

http://s166.photobucket.com/albums/u...inandWh.07.flv

ps Same engine, HPI pipe, Mugen alu clutch shoes, Chronic front extended TVP's..

black mamba

17/47 should be the minimum gear ratio used with a Axial engine, whether it be any of the 28s or the 32.[8D]

gimp chump

hey guys

well i lied my savage does wheelie with 46/20 gearing
i adjusted my 2 speed to shift later and i turned my low speed needle back to flush started it up and the thing just about jumped around like a frog i wouldnt call it wheelies on command but i almost fliped it once or twice
thats good enough for me

HerrSavage

20/46 still seems way overgeared.. Won't that just overstress your clutch??

MiamizFinest

hell find out when the shoes muchroom over weld on to each other and stop working

lauderboy

right i'am gonna order a 14/52 or a 17/47 but what would do but i'am thinking maybe i will go for a good top speed so whats the best combo for that without any problems like haveing to take a dremel to my engine plate

gimp chump

[quote]ORIGINAL: MiamizFinest



hell find out when the shoes muchroom over weld on to each other and stop working
[/quot

Id be surprised if my shoes welded toghther i hope they dont but oh well if they do
I like my 20/46 combo so far wheelies very easy to cantrol but theyre still there and tons of top speed
wait till i add the new savage x 3 speed [>:]