Sunday, September 22, 2013

Turnigy Power Systems 5000 , Think You've got a Quick RC car Prove it ! ( HobbyKing Speed competition.

Well I have been thinking about this competition a lot since it was announced and despite me making my mind up early on that I would not be competing  I still had several thoughts as to what I would build.

Now most people are going to go after the 2S class simply because most people have chassis and power systems that will put them there. I do think lots of people will want to run in the unlimited class but most will not officially enter as it takes a unbelievable amount of power to push a car to 150+ mph and the bigger and heavier it is the more you need . So I really feel those that actually enter the Unlimited class will primarily be made up of people who really have experience in this and already have a purpose built high speed car.I can say I could be completely wrong  though . So if you have plans to run in the unlimited class more power to you but don't get your hopes too high.

If you need inspiration on the power needed the current high speed champ is Nick Case . He used a  NEU 1521 motor with a 1577kv rating running on 12S or roughly 50 volts .

Now I would like to point out    Has a lot of calculators that will greatly help a person with there fighures if they want to do speed runs .

So what would I build for the unlimited class. well so far I decided I would need a chassis that is cheap and has the flexibility to be geared really high and that could be set up with lots of room for a high voltage system .  At this point i think I would be looking at the Sakura D3 CS drift. In stock form it would need lots of modifications just like any other chassis but I feel the front mounted motor provides a lot of advantages . Since its mounted in front of the front wheels it opens up the center of the chassis to allow more space for batteries.  The fact that with a simple front diff gear and center gear swap using essentially stock  parts will give it a 1.36 diff ratio makes it look even better. Basically that means you could have up to a 4.77 rollout with common parts and that equals a lot of wheel speed.

So what would be my main fear with this chassis?

The belts .They have several advantages over a shaft drive chassis but can they handle the load that would be put on them powering a car at triple digit speeds? I have no Idea .

 Wait what about 2S? Well thats pretty simple You want a mixture of the minimum and maximum you can get. You want the minimum chassis  in other words you want it light weight and the most powerful motor you can get your hands on a small front profile helps also. Since this is so much simpler I actually have a parts list containing most of what would be nice for someone on a budget to buy .

5: Turnigy TGY-4409MD metal gear servo    $12.84
6: Bearings (4) 1/8 x 5/16 flanged and (2) 1/4 x 3/8 flanger (Avid brand: standard $6.00)
7: Transmitter and receiver of your choice .

Theoretically using the included 20 tooth pinion and spur gear and the motor listed above the car should theoretically top out over 100 mph . Another option if you can wait would be the Turnigy Trackstar SCT 4T 550 motor as its rated at 960 watts and it has a theoretical top speed of 140 mph with proper gearing.   Of course these speed are not actually as far as things could be pushed as this is going off of motor specs for a one shot run they could be pushed much further. The main problems at these speeds would be maintaining control and finding a proper area to run .

Tuesday, September 17, 2013

Redcat Earthquake 8E to Turnigy Trailblazer and BSD Racing BS808T part number interchange list.

Well if you have owned one of these Trucks for a while you may now they are all brothers and sisters . If not now you know . If you live outside the US HobbyKing and BSD may be a faster and cheaper parts source for you if you live in the US Redcat Racing will Probably be the fasted way to get parts but HobbyKIng will be the cheapest if you buy in bulk. This list has a few upgrade parts scattered throughout and there are a few parts missing here or there I'm Sure.

I have added links to some of the part #s to places where they can be bought .( Not responsible for dead links or links to the wrong product ) verify what your ordering before you order. I have not included part numbers for screws and bearings due to there universal nature or any electronic items..

BDS and Redcat part number all seem to be the same so a additional column was not added for BDS.

Common name Redcat / BDS part # Turnigy part #
/product ID #
Lower Suspension Mount Block, 
Front/Rear ~
BS903-028 292000044
Antenna mount 3PCS ~ BS903-107 292000062
Steering Servo Mount A/B ~ BS803-005
Anti Roll Bar Linkage Set
(Qty 1, 2 are needed to 
mount 1 roll bar) ~
BS903-029 292000045
Center Diff Mount ~ BS803-020 292000086
Center Diff Upper Plate ~ BS803-021 292000087
Wiring Mount ~ BS803-018 292000084
Rear Suspension Arm Pin-Short(?3*34.5mm) ~ BS903-061 292000047
Front/Rear Upper Deck Mount ~ BS803-016 292000083
Front Upper Deck ~ BS803-011
Differential Drive Cup with Pin
BS903-109 292000063
Differential Gearbox ~ BS903-097 292000059
Diff. Outdrive C Set Screw ~ BS903-083 292000051
Diff Drive Cup B/Pin(2*10) ~ BS903-110 292000064
Suspension Arm Pin-Long
(?3*56mm) 4 PCS ~
BS903-025 292000042
Bumper chassis-Fr ~ BS904-005 292000114
Bumper brace 2PCS ~ BS904-004 292000113
Motor Pinon Gear 12T BS808-007 292000130
Motor pinion 15T NA


Motor Pinion Gear 15T w/M3 Grub Screw - Turnigy Trailblazer 1/8, XB and XT 1/5
Receiver Case Top and Bottom ~ BS803-015 292000082
Stub Axle w/pin ~ BS808-001 292000115
Shock Tower ~ BS903-005 292000034
Bumper Chassis, Rear ~ BS904-006 292000115
Front Suspension Arm Pin-Short(?3*37.5mm) 4PCS ~ BS903-024 292000041
Front Chassis ~ BS903-026 292000043
Fr/Rr body post ~ BS801-008 292000112
Double Way Ball end 6 PCS ~ BS903-094 292000057
Upper Suspension Arm Mount (F/R) BS903-011 292000038
Diff. Gearbox Bulkhead-Upper/Lower ~ BS903-098 292000060
Front Lower Suspension Arm (L/R) ~ BS903-018 292000099
Hub Rear Carrier ~ BS903-058 292000046
Side Guard Left/Right ~ BS803-002 292000120
Front Center Diff Drive Shaft (1pcs) BS803-012
Center Diff Drive Shaft Rear 1pcs ~ BS803-013
SPUR GEAR (49T) ~ BS808-005 292000071
Wheel Hex with Pin 2*10 4PCS ~ BS808-002 292000126
Suspension Arm Mount Block 2 PCS ~ BS903-010 292000037
Left/Right Battery Strap 2pcs ~ BS803-009 292000078
Left Battery Tray ~ BS803-007 292000076
Right Battery Tray ~l BS803-008 292000077
Steering Linkage Set 2 SETS ~ BS903-030
Rear Lower Suspension Arms (L/R) BS903-059 292000102
Rear anti-roll bar set ~ BS905-009
Upper Suspension Arm Set ~ BS903-008 292000097
Front Suspension Mount ~ MPO-06
Rear Front Suspension ~ MPO-07
Diff Ring gear and Spider Gears
 1 Set ~
BS803-027 292000122
Drive Shaft Set (4*87.5mm) 2PCS ~ BS903-019
Aluminum Motor Mount ~ BS803-022 292000088
Bumper 2 PCS ~ BS904-003
Shock Absorber Unit(Plastic),2 PCS BS903-003-b
Servo Saver and Bell Crank 
with Aluminum Ackerman ~
BS803-010 292000079
Center Differential  ~ BS808-006 292000129
Steel Spur Gear 49T ~ MPO-019
Front/Rear Complete Diff 1 Unit ~ BS803-026
Front/Rear Complete Diff 1 Unit Hardened ~ BS803-026A
Aluminum Front/Rear Upper Deck ~ BS803-017 292000121
Front/Rear Complete Diff and 
Bulk Head 1 Unit hardened ~
BS803-025A 292000090
Steering Linkage ~ MPO-11
Center Differential Unit ~ BS808-004 292000128
Cast Aluminum Steering Knuckle L/R BS502-021 292000065
6065 Blue Aluminum Chassis ~ BS803-001 292000119
Shock Stay Mount ~ MPO-05
Steering Knuckle Set, Aluminum Upgrade Qty 2 ~ MPO-03
Rear Hub Set ~ MPO-04
C Hub Assembly, Aluminum Upgrade ~ MPO-02