STOCK motor forum
#1771
Tech Master
Oops, my fault. His signature mentioned Yokomo.
#1772
Tech Champion
iTrader: (31)
Originally posted by DOMOisCOOL
To figure out FDR (Final Drive Ratio), find out the internal gear ratio of the car first. I believe you are driving a Yokomo SD? If so, the internal gear ratio is 2.35. Then find out the spur/pinion size.
Ex:
Spur/Pinion= ??? x 2.35 = FDR
72/21= ~3.4 x 2.35 = 8.0.
Hope this helps.
To figure out FDR (Final Drive Ratio), find out the internal gear ratio of the car first. I believe you are driving a Yokomo SD? If so, the internal gear ratio is 2.35. Then find out the spur/pinion size.
Ex:
Spur/Pinion= ??? x 2.35 = FDR
72/21= ~3.4 x 2.35 = 8.0.
Hope this helps.
You guys are great, thanks 4 all the help & keep it coming .
-JayBee
#1773
Monster stock - 24-30 rollout depending on the track. I run a 25-27 rollout on a medium sized track.
Q? - Is the BRCA Binary 2 magnets?
Q? - Is the BRCA Binary 2 magnets?
Last edited by fatdoggy; 07-27-2004 at 12:02 AM.
#1774
I run the Orion Core Stock motor.
When a local expert at the track tested it, he said it was a very slow turning motor. He said it must be a torque motor. I have no clue. I am running my TC3 with stock pinion and 25T spur. I can't figure out if I'm getting outrun in the straights due to cheap batteries(Reedy BlackLabel 3300), cheap ESC (Duratrax AutoSport), or wrong gearing.
So, is the Trinity Monster a better motor for a beginner? Dang I dunno about all this stuff.
When a local expert at the track tested it, he said it was a very slow turning motor. He said it must be a torque motor. I have no clue. I am running my TC3 with stock pinion and 25T spur. I can't figure out if I'm getting outrun in the straights due to cheap batteries(Reedy BlackLabel 3300), cheap ESC (Duratrax AutoSport), or wrong gearing.
So, is the Trinity Monster a better motor for a beginner? Dang I dunno about all this stuff.
#1775
The Core Stock, Reedy MVP and Peak Hellfire are basically the same motor...based on the Reedy/Yokomo can I think!? They are torquier motors and would require a larger pinion. Based on your gearing, you're around 7.2 final drive ratio. I run my Cores around 6.25. A good tuning tip is to run them with narrowed brushes (0.140"). This is a "Big Jim" tuning tip and it's always worked for great me.
#1777
The Mvp uses a yok can and endbell. The orion and peak use a Top can and endbell.
#1778
How many of you guys own your own mini-lathe's to cut the comm's? I'm new to this hobby and was wondering if I needed to pick one up. I'm just racing stock, anyways.
#1779
Tech Master
Originally posted by donoman
How many of you guys own your own mini-lathe's to cut the comm's? I'm new to this hobby and was wondering if I needed to pick one up. I'm just racing stock, anyways.
How many of you guys own your own mini-lathe's to cut the comm's? I'm new to this hobby and was wondering if I needed to pick one up. I'm just racing stock, anyways.
#1780
I've got a lathe. My best two investments in this hobby were a decient charger and a lathe. I'd say get one if you intend on racing every week. I cut after 4-5 runs and it's really much easier then asking others to cut your comm. If you'd rather not buy one just yet, offer someone a bottle of soft drink or a few bucks and they'll cut your comm for you.
Just a note, it's very annoying when you cut someones comm and it takes alot of passes to clean it up. At least have your comm cut every 8-10 runs if your racing.
Just a note, it's very annoying when you cut someones comm and it takes alot of passes to clean it up. At least have your comm cut every 8-10 runs if your racing.
#1781
Tech Rookie
I have a P2K2 that should be in next week. Lemme know what you guys think!
#1782
Originally posted by donoman
How many of you guys own your own mini-lathe's to cut the comm's? I'm new to this hobby and was wondering if I needed to pick one up. I'm just racing stock, anyways.
How many of you guys own your own mini-lathe's to cut the comm's? I'm new to this hobby and was wondering if I needed to pick one up. I'm just racing stock, anyways.
See www.rctechonline.com for their race schedule.
Might need about $3 to buy replacement brushes to go with the comm cut.
After seeing some racing and talking with the locals, you should be able to decide about buying a lathe for yourself.
#1783
I have one but right now Im at the point that I do more harm than good when i use the thing.
Not good at it at all. And are more about cleaning them instead of cutting them.
Not good at it at all. And are more about cleaning them instead of cutting them.
#1784
Tech Master
Originally posted by XXX-S Bill
Just show up for the racing at RC Tech in Daly City and someone can cut the commutator for you. I did three other racer's motors this past Sunday. You don't even have to be a "racer" for us to help you out.
See www.rctechonline.com for their race schedule.
Might need about $3 to buy replacement brushes to go with the comm cut.
After seeing some racing and talking with the locals, you should be able to decide about buying a lathe for yourself.
Just show up for the racing at RC Tech in Daly City and someone can cut the commutator for you. I did three other racer's motors this past Sunday. You don't even have to be a "racer" for us to help you out.
See www.rctechonline.com for their race schedule.
Might need about $3 to buy replacement brushes to go with the comm cut.
After seeing some racing and talking with the locals, you should be able to decide about buying a lathe for yourself.
#1785
Tech Regular
i have a rtr tc3 and i plan to upgrade to a reedy spec 19t quad magnent motor, and i was wondering if i should just use the stock spur and pinnon gears with it or get better ones?
also is their so way to figure out a motors mph?
also is their so way to figure out a motors mph?