zapmike

iTrader: (11)

whats a good pinion starting point on a b4 with a lrp 7.5, thanks in advance (indoor track, dirt, not clay)

Thanks in advance

GroffBall

iTrader: (10)

I'm running a 21 pinion with the stock spur on my B4 with an orion 7.5. I would start with a 18 and go up from there since the LRP doesnt use a sintered rotor.

tuffthegamer

iTrader: (3)

Going from novaks suggestions on gearing, it should have a FDR of 9.5 . Using their formula, and using stock spur, they suggest 22 pinion. What has worked for me is starting at the point they suggest and then go up and down from their testing different ones. But, I have found sometimes the formula is pretty close to what I actually go with.

good luck.

tuffthegamer

iTrader: (3)

Whoops, forgot to mention also, alot of racers at my track go by the rule, go up on the pinion until your motor gets hot. I dont' know how true it is, but, another suggestion.

zapmike

iTrader: (11)

so the rotors in the vector motors arent sintered? on the back it says " New military spec neodymium magnet" i had problems with the neos' last year b/c they kept gettin warm on me, hope these are better...thanks for the replys

JamesnMeyer

iTrader: (41)

No they are not sintered. I was running a 22 tooth on my RB5 with the 7.5 LRP motor with a sintered rotor and the same gearing with the 7.5 Novak Velocity.

zapmike

iTrader: (11)

Ok, thanks for the info, i checked around and looks like u can buy a sintered rotor for em, though i only found it at stormerhobbies, and it looked like they were on order...part number is LRP 50610 is this a new item or do you know of a place online that stocks them? Thanks in advance!

JamesnMeyer

iTrader: (41)

I have a new one I'll sell ya

hyperguy

iTrader: (22)

it all depends on how big or small ur track is really on the gearing. at my local track i run a b4 with the lrp 6.5 and gear it at 20, one of the pther guys run the 7.5 and he runs his at 21 or 22 depending on what track we built for that month. with mine geared at a 20 its just over room temp after a 6 min race.

AxiomJacob

iTrader: (27)

At the race I was at last weekend guys were running from a 19 to a 22/81 ratio with novak 7.5Rs.

hyperguy

iTrader: (22)

any of those would be good all around choices cuz your not starving for power by any meens.

glassdoctor

iTrader: (4)

I've run 18/81 on a small high bite track... up to 21/81 on other tracks. I have the original Reedy 7.5... if you gear it on the high side you will lose a lot of hte drag brake. So if you drive with drag, and can't get enough.. gear down.

zapmike

iTrader: (11)

thanks for all the info guys, really appreciated!

Mike

Nitronut3

iTrader: (6)

one more reason you should ditch the LRP motor and get a Novak one.
And sell the buggy and get a truck like the rest of us.
BTW, happy b-day bro.

Nate

zapmike

iTrader: (11)

I dont think ill ditch the motor, ill give it a try, and i hate trucks, u know this thx for the happy bday!

Mike