86LikesHpi Pro 4
03-21-2006, 05:02 AM
Hey i read somewhere that Hara used to run double one-ways in his car (I think it was the old Pro3??)... double one-ways!
That's crazy... one-way is tough, a double... yikes.
That's crazy... one-way is tough, a double... yikes.
03-21-2006, 05:40 AM
Yeah, that's pretty wild! I know a few guys who ran the TC3 that way. 
03-21-2006, 08:46 AM
Originally Posted by AngryAsian
Hey i read somewhere that Hara used to run double one-ways in his car (I think it was the old Pro3??)... double one-ways!
That's crazy... one-way is tough, a double... yikes.
That's crazy... one-way is tough, a double... yikes.
03-21-2006, 08:55 AM
Originally Posted by kewdawg
On asphalt the car will still oversteer. You said it was awesome. I say - not even close. You'll have a lot more control and better handling, with a diff, on ANY small & tight track.
03-21-2006, 02:13 PM
Originally Posted by cartmen34
It's been discussed at length here, but the posts are buried now and I can't find them either, so here are the best images I have of it. The part of the mod you can't see is that there are shock-seal type o-rings under the inverted purple cone washers bolted to the steering posts, and the holes that are enlarged are done so in the back and the front of the upper deck. This helps the upper deck "flex" and settle back into place without setting into a "tweaked" position.
Hope that helps!
Hope that helps!
03-21-2006, 03:22 PM
Tech Adept
rc car bag
help help i cant find this bag.rc racer unite help me find this bag.
http://www.speedtechrc.com/store/ebp...il.asp?id=5861
New Racer's Edge/TM Formula 8 Bag
http://www.speedtechrc.com/store/ebp...il.asp?id=5861
New Racer's Edge/TM Formula 8 Bag
03-21-2006, 03:48 PM
hey mike..
i came across one of those SQUARE towers and put it next to mine and found that the outer most hole lines up but the other holes are all offset...the pro4 hara tower has holes that are significantly lower than the SQUARE tower. i hope that makes sense
anyways, the tower that comes with the hara edition has lower mounting holes that the SQUARE tower..
i came across one of those SQUARE towers and put it next to mine and found that the outer most hole lines up but the other holes are all offset...the pro4 hara tower has holes that are significantly lower than the SQUARE tower. i hope that makes sense
anyways, the tower that comes with the hara edition has lower mounting holes that the SQUARE tower..
03-21-2006, 04:15 PM
Originally Posted by karlo511
hey mike..
i came across one of those SQUARE towers and put it next to mine and found that the outer most hole lines up but the other holes are all offset...the pro4 hara tower has holes that are significantly lower than the SQUARE tower. i hope that makes sense
anyways, the tower that comes with the hara edition has lower mounting holes that the SQUARE tower..
i came across one of those SQUARE towers and put it next to mine and found that the outer most hole lines up but the other holes are all offset...the pro4 hara tower has holes that are significantly lower than the SQUARE tower. i hope that makes sense
anyways, the tower that comes with the hara edition has lower mounting holes that the SQUARE tower..
03-22-2006, 01:54 PM
I must be losing my mind.... Do you guys have a link to Hara's Pro4 Worlds set up on HPIRACING.COM anywhere? I thought I saw it before...
03-22-2006, 01:59 PM
Originally Posted by MikeR
I must be losing my mind.... Do you guys have a link to Hara's Pro4 Worlds set up on HPIRACING.COM anywhere? I thought I saw it before...
japanese fonts need to be loaded on pdf reader.
you want the ROAR Nats setup too? works great!
03-22-2006, 04:26 PM
Originally Posted by rc-zombies
'04 Worlds? I have...pm me your email. 1.7mb file.
japanese fonts need to be loaded on pdf reader.
you want the ROAR Nats setup too? works great!
japanese fonts need to be loaded on pdf reader.
you want the ROAR Nats setup too? works great!
03-24-2006, 03:09 AM
i recnetly got one of these and have i major question trying to get my gearing right.
is there anywhere i can get a better gearing sheet or can sum1 tell me how to do the equation.
the manual only goes down to 97 i think and one of my spurs is labeled 77
can anyone help
is there anywhere i can get a better gearing sheet or can sum1 tell me how to do the equation.
the manual only goes down to 97 i think and one of my spurs is labeled 77
can anyone help
03-24-2006, 03:16 AM
Tech Regular
If you have a 77 tooth spur it is more than likely 48 pitch the book tells you how to figure you gear ratio it is spur/pinion x 2.4375
03-24-2006, 03:54 AM
http://www.gearchart.com/index.cfm?f...n=chart.create
This is great... will do all your ratio's for you...
This is great... will do all your ratio's for you...
03-27-2006, 07:40 PM
Is there a huge difference between the 2mm and 2.5mm chassis? Our track has low grip so I'm running the purple 2mm + .5mm silver for 2.5mm total for roll centers in the front, and 2mm + 1mm silver 3mm total for roll center in the rear (spacers under the suspension blocks). From what I understand this yields more grip. I had seen this set-up on Thad Garners set up sheet. It seem like the 2mm chassis is being disscontinued, Tower, KT, and speedtech do not list this chassis.
03-27-2006, 08:28 PM
Which one is better shaft drive or belt drive?
03-27-2006, 08:56 PM
Originally Posted by Joe Os
Which one is better shaft drive or belt drive?
shaft= less maintance,faster reaction time thus faster acceleration
belt=more maintance(depending on belt), and higher top end
thats the difference between those....i believe..not sure though
03-27-2006, 09:37 PM
Originally Posted by hobbipro
Is there a huge difference between the 2mm and 2.5mm chassis? Our track has low grip so I'm running the purple 2mm + .5mm silver for 2.5mm total for roll centers in the front, and 2mm + 1mm silver 3mm total for roll center in the rear (spacers under the suspension blocks). From what I understand this yields more grip. I had seen this set-up on Thad Garners set up sheet. It seem like the 2mm chassis is being disscontinued, Tower, KT, and speedtech do not list this chassis.
2mm chassis is the best chassis to use for outdoor asphalt racing. even better when combined with the 2.25mm top deck that is found on the '05 or Hara Edition Pro4's.
Who's Thad.
Try Hara's set-up from the Roar Nats from a few years back.. great base set-up for outdoor.
03-27-2006, 09:43 PM
Shaft:
Pros: Instant acceleration, instant brake, arguably less maintenance. No consumables in drive-train. Easy to pull a diff out - depending on design
Can be argueably more efficient as nothing "gives" in the drive-train.
Cons: Not as balanced as belt as the motor has to be on one side. Can be a hassle pulling diffs out - depending on design. Can suffer from torque steer.
Can be harder on gears if you hit things.
Can be argueably less efficient as the drive has to turn 90degrees at the diff.
Belt:
Pros: Smoother feel, can be more balanced with the motor in the centre of the chassis, More forgiving on gears when crashed, can be argueably more efficient due to motor lining up with belts.
Cons: Belt wear out - require replacement and constant adjustments, are sensitive to dirt and debris, Acceleration suffers in comparison to a shaft car, braking not as strong as a shaft car..
There's very little seperating the top level kits... go for local parts support. Don't worry too much about whether it's a shaftie or a belt drive. Many drivers find a belt easier to drive as they're smoother and more forgiving... you can be rougher with the throttle..
But, then lots of drivers like the instant response of a shaft drive.. instant acceleration is hard to argue with..not to mention being much more resistant to debris (Ie. can run it in the street) and not having to replace belts...
Not so sure about the "Top end" comment above... i'd say it's even or better in a shaft's favour as there's no belt stretch...
Pros: Instant acceleration, instant brake, arguably less maintenance. No consumables in drive-train. Easy to pull a diff out - depending on design
Can be argueably more efficient as nothing "gives" in the drive-train.
Cons: Not as balanced as belt as the motor has to be on one side. Can be a hassle pulling diffs out - depending on design. Can suffer from torque steer.
Can be harder on gears if you hit things.
Can be argueably less efficient as the drive has to turn 90degrees at the diff.
Belt:
Pros: Smoother feel, can be more balanced with the motor in the centre of the chassis, More forgiving on gears when crashed, can be argueably more efficient due to motor lining up with belts.
Cons: Belt wear out - require replacement and constant adjustments, are sensitive to dirt and debris, Acceleration suffers in comparison to a shaft car, braking not as strong as a shaft car..
There's very little seperating the top level kits... go for local parts support. Don't worry too much about whether it's a shaftie or a belt drive. Many drivers find a belt easier to drive as they're smoother and more forgiving... you can be rougher with the throttle..
But, then lots of drivers like the instant response of a shaft drive.. instant acceleration is hard to argue with..not to mention being much more resistant to debris (Ie. can run it in the street) and not having to replace belts...
Not so sure about the "Top end" comment above... i'd say it's even or better in a shaft's favour as there's no belt stretch...
03-28-2006, 10:45 AM
Pro 4 bodies
Last edited by coastaltony; 10-13-2007 at 05:28 AM.
03-28-2006, 07:34 PM
I scored a 2mm chassis off of stormer. They were the only ones listing it, not even HPI's site lists it. Wonder if its beind discontinued? Heck even tower has the 2.5 as being discontinued. Has there been any rumors of a pro5? I know the pro4 was released in 04, My hara is only a few months old, wonder whats going on.
03-28-2006, 08:30 PM
Originally Posted by hobbipro
I scored a 2mm chassis off of stormer. They were the only ones listing it, not even HPI's site lists it. Wonder if its beind discontinued? Heck even tower has the 2.5 as being discontinued. Has there been any rumors of a pro5? I know the pro4 was released in 04, My hara is only a few months old, wonder whats going on.
Only the stock 2.5mm chassis is discontinued.
03-28-2006, 09:19 PM
Hey Q, good running this past weekend. Looking forward to running this summer. What's it going to take to get you guys to run some rubber tire races?
03-28-2006, 09:26 PM
Originally Posted by Bob Barry
Hey Q, good running this past weekend. Looking forward to running this summer. What's it going to take to get you guys to run some rubber tire races?
03-28-2006, 09:55 PM
Originally Posted by hobbipro
I scored a 2mm chassis off of stormer. They were the only ones listing it, not even HPI's site lists it. Wonder if its beind discontinued? Heck even tower has the 2.5 as being discontinued. Has there been any rumors of a pro5? I know the pro4 was released in 04, My hara is only a few months old, wonder whats going on.
Spring/Summer 2007
03-28-2006, 11:07 PM
Tech Master
Originally Posted by hobbipro
I scored a 2mm chassis off of stormer. They were the only ones listing it, not even HPI's site lists it. Wonder if its beind discontinued? Heck even tower has the 2.5 as being discontinued. Has there been any rumors of a pro5? I know the pro4 was released in 04, My hara is only a few months old, wonder whats going on.
03-29-2006, 02:51 AM
Tech Adept
futaba
futaba new radio http://www2.towerhobbies.com/cgi-bin...?&I=LNLXS4&P=G
new reciever :Futaba R303FHS Synthesized 3-Channel Receiver 75MHz
http://www2.towerhobbies.com/cgi-bin...?&I=LXGCY6&P=V
a little to late for futaba to put out a new reciever with spectrum out now.
new reciever :Futaba R303FHS Synthesized 3-Channel Receiver 75MHz
http://www2.towerhobbies.com/cgi-bin...?&I=LXGCY6&P=V
a little to late for futaba to put out a new reciever with spectrum out now.
03-29-2006, 03:55 AM
Nice radio, I agree a little too late. I just bought my 1st ko propo Helios without a module for $179 at Ko's site. Added a spektrum and drop down wheel for the same price as this Futaba.
So Summer 07 for a new car? Wonder if it will remain a shaft, or will they follow their brother car and go back to belts? I just hope they dont follow the market and price this new car in the $400+ range, its getting to be rediculas, rc use to be affordable.
So Summer 07 for a new car? Wonder if it will remain a shaft, or will they follow their brother car and go back to belts? I just hope they dont follow the market and price this new car in the $400+ range, its getting to be rediculas, rc use to be affordable.
03-29-2006, 05:01 AM
Tech Adept
your right car getting to high in price.
03-29-2006, 08:57 AM
It's never too late...especaially when it's better than the competition.
I guess you guys haven't seen Futaba's 3PKS 2.4ghz system yet.. to be released in May. check out the reciever.. tiny and no antenna wires...
The 2.4 GHz module features a short aerial, and is installed in the recess in the transmitter in place of the conventional RF module.
The long telescopic aerial is no longer required to transmit the RF signal.
The Futaba SS system is significantly faster in its response time than existing systems, and offers no less than three times faster HRS FM modulation for fast digital servos, in spite of the 2.4 GHz SS system technology.
The RF module can be set to operate using standard FM modulation or the HRS FM modulation process.
Specification::
more Specification:
The PK-FSM 2.4 G RF module can be used in any of the following transmitters:
# Megatech T3PK
# Megatech T3PK(B)
# Megatech T3PKS(B)
# FF-3 (T3VC)
# FF-3 (T3VCS
he ultra-compact 2.4 GHz receiver does not feature an external flexible wire aerial. Instead it is fitted with a pair of special aerials inside the case, offset to each other by 90°; these supersede the conventional aerial.
The new system offers two major advantages: on the one hand, the aerials, offset to each other by 90°, are much less attitude-dependent than any conventional whip or flexible wire aerial. This diversity system also considerably reduces what are known as reception "dead points".
On the other hand the receiver is much easier to install and handle, and it is no longer possible to tread on the aerial accidentally and rip it out.
The receiver automatically detects the type of modulation in use, and can switch between standard FM and HRS-FM modulation.
One special feature offered by the R 603 FF receiver is its integral RS232 port.
This output is intended for use with a frequency scanner program, which can display the frequencies in use on the screen of a PC.
This interface can also be used to carry out detailed fail-safe settings.
Specification:
Channel spacing: 3.00 Weight: 14 g
Channel spacing: 1024 kHz Dimensions: 40x26x14 mm
Voltage: 4.8...6 Volts current: 80 mA
current: 80 mA
I guess you guys haven't seen Futaba's 3PKS 2.4ghz system yet.. to be released in May. check out the reciever.. tiny and no antenna wires...
The 2.4 GHz module features a short aerial, and is installed in the recess in the transmitter in place of the conventional RF module.
The long telescopic aerial is no longer required to transmit the RF signal.
The Futaba SS system is significantly faster in its response time than existing systems, and offers no less than three times faster HRS FM modulation for fast digital servos, in spite of the 2.4 GHz SS system technology.
The RF module can be set to operate using standard FM modulation or the HRS FM modulation process.
Specification::
more Specification:
The PK-FSM 2.4 G RF module can be used in any of the following transmitters:
# Megatech T3PK
# Megatech T3PK(B)
# Megatech T3PKS(B)
# FF-3 (T3VC)
# FF-3 (T3VCS
he ultra-compact 2.4 GHz receiver does not feature an external flexible wire aerial. Instead it is fitted with a pair of special aerials inside the case, offset to each other by 90°; these supersede the conventional aerial.
The new system offers two major advantages: on the one hand, the aerials, offset to each other by 90°, are much less attitude-dependent than any conventional whip or flexible wire aerial. This diversity system also considerably reduces what are known as reception "dead points".
On the other hand the receiver is much easier to install and handle, and it is no longer possible to tread on the aerial accidentally and rip it out.
The receiver automatically detects the type of modulation in use, and can switch between standard FM and HRS-FM modulation.
One special feature offered by the R 603 FF receiver is its integral RS232 port.
This output is intended for use with a frequency scanner program, which can display the frequencies in use on the screen of a PC.
This interface can also be used to carry out detailed fail-safe settings.
Specification:
Channel spacing: 3.00 Weight: 14 g
Channel spacing: 1024 kHz Dimensions: 40x26x14 mm
Voltage: 4.8...6 Volts current: 80 mA
current: 80 mA