Gearing for 17.5 blinky will vary by motor but ideally you want the biggest pinion you can find. Keep your temp between 130-150 after a 6 minute run. If you are running 10 min mains, then you will need to do a test run of 10 min and check temp then too. Also don't practice for more than 4 or 5 min at a time just to extend life of the magnets.

temps below 130 and you probably won't be fast. Temps above 150 and you'll fade through the run. I don't know much about that motor, but you want to run as much timing in the can as possible with MOST motors. Read up on that one and see if it's the same, but it probably is. I ran my 4.1 at 36-72. Keep in mind that anything over 34 tooth pinions needs button head motor screws for clearance. I was running 35-72 and when I went up to 36, my temps actually went down because I was more in the motor's power band.

double post

I've got a question about rear tires. I've broken out my stash of offroad cars and they're ready for the season, but some of my rear tires are acting funny.

I don't run a lot of camber on the rear, -1 to -2 typically, but some of my rear tire sets are coming off of the track coned in overall profile after a 6-10 minute run. As in, the outer diameter is smaller than the inner diameter, like you see with onroad foam tires. Smashing the insert around some brings the tire carcas back to it's expected profile.

Is this an indication that my open cell foam inserts are needing to be replaced?

Got a big sweeper at the track you normally race at? Cuz i had the same problem and it came from there, the sweeper. Tried stiffer foam but i lost my car on other parts of the track, so i stuck with soft foam and coned tires.
If it works, just ignore it.

Just replace all of your tires with new closed cell foams and be done with it.

Open cell foams would work best and provide consistent traction for yalls track. It sounds like you may need to go to using a larger profile foam and trim (scissors) to fit (commonly called overstuffing). It isnt uncommon to use 1/10 truck foams in buggy rears to help maintain tire carcass profile. For your track, a soft white Proline truck foam would work well.

In high bite situations you can even rubber cement the insert to the rim... but that doesnt apply in this case... and doesnt have a long life expectancy (foam deterioration).

Closed cells have more side bite even on junk tracks...you have to know how to tune them in with the good ol hole punch.

Do share... you have piqued my interest...

This is from RED RC coverage of Cactus Classic. http://events.redrc.net/event-galler...ic/?nggpage=13

Essentially your softening the foam more by removing material and since it's closed cell, it won't break down.

Interesting. Now all a person needs is a way to remove glued tires from wheels so they could actually tune it without buying a new set of tires/wheels and trying something different on the next set.

Hi,

Is there anyone that runs a LRP SXX Stock Spec v2 with a X12 17.5t motor and timing/boost?

I'm waiting for my motor to arrive and I was just wondering if there was someone who could give me some advise with the settings on this esc, what gearing I should run and other tips

I should be as fast as a good/pro 27t brushed motor, something like a Trinity Co27 or so

So cuold anyone help me with this?

Thanks

Nah, it cones no matter what, even just bashing in the back yard.

I'll have to see, we're redoing the track and getting some new dirt

Thanks, Dave. These are regular ProLine inserts. I might try some of the truck inserts and see where it goes.

A glass eyedropper and some acetone and some patience.

Use a sharp exacto knife and cut along the inside sidewall just above the rim, take out the old foam, put in the new and glue the tire back together...works like a champ beings you are gluing rubber to rubber back together. We do it all the time when the tread outlasts the foam.

i run on a med to high traction smaller indoor track what gear diff oil weight do you think would work best

Hmm... interesting. I would be inclined to think that would have an impact on a tires air gap/functionality as well...