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OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

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Old 09-13-2011, 02:03 PM
  #1201
paba60
 
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

serpent's got it. Thats what my car looks like.

No problems to report after that mod....

Otherwise, pebbles can get stuck between the housing and the belt....shred time!
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Old 09-13-2011, 02:08 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

im not sure but i think the new sprint 2 ( the orange one) has the cut outs from factory and if you have the purple one you have to do the cut outs and if you look back in this thread you will see lots of pics post on cutting the chassis as well. if you look at xray tc6 most tc have them as well


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Old 09-13-2011, 04:25 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

Quote:
So I would need to cut the rear bulkhead and ope it so that the peebles and such don't get lodged in there.
If you go to page 45 there are a few clear photos that shows what it will look like once your done cutting
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Old 09-13-2011, 06:06 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

vinnie did you ever try to balance this car? 
did you ever  race it against other tc cars? if so how did you do?
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Old 09-14-2011, 04:06 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

I haven't tried to balance yet...waiting on a set of sway bars, to see if I can install them.
However it runs so much more stable, steering if perfectly straight.

Once I get the sway bars I will post more pics, plus I got the upper/lower graphite deck installed now.
I will post pics once i'm done
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Old 09-14-2011, 05:28 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

What is balance? and where can I get sway bars?
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Old 09-15-2011, 03:16 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

Balancing the car is when you have the same weight all around in each wheel....you want to have the same weight on each wheel so the suspension does it's job the same all around.
I'll let you know where to get the sway bars once I figure out a way to install them.
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Old 09-17-2011, 11:11 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

Anybody got any leads on saddle packs that fit with the graphite chassis? ThunderbirdJunkie can't find anything, and the two saddle setups he's got are way too tall. Does anybody still make a saddle with the little sub-C shaped humps on the bottoms? Itching to get this car up and running for VTA next year, but at this point ThunderbirdJunkie may consider just snagging a used TC4.

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Old 09-17-2011, 11:35 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

Sprint 2 Sport - newbie.
Hey guys,
I brought a hopped up HPI sprint 2 sport after reading on here that they are good for beginners, its got heaps of alloy parts, its the first model Sprint 2 sport i believe, its not the new camaro one and doesn't have the 2.4ghz controller.
Anyway the biggest problem I'm having is that it will oversteer really easy when i turn right, but when i turn left it just seems to understeer really bad, the shocks appear to be setup the same and the front wheels seem to turn the same angles both left and right, anyone have any idea what may cause this?
also this is likely related - when i go full throttle the car veers off to the side, i tried adjusting the steering trim but this doesn't work, at low speed i can get it tracking straight but under heavy acceleration it just veers off to the side still.
There is a bit of slop in the steering.
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Old 09-18-2011, 01:36 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)


Quote:
ORIGINAL: ThunderbirdJunkie

Anybody got any leads on saddle packs that fit with the graphite chassis? ThunderbirdJunkie can't find anything, and the two saddle setups he's got are way too tall. Does anybody still make a saddle with the little sub-C shaped humps on the bottoms? Itching to get this car up and running for VTA next year, but at this point ThunderbirdJunkie may consider just snagging a used TC4.

I have the same chassis and I run a lipo stick pack, not a saddle. You need to put something so the battery doesnt move though. I used a few battery posts attached to the purple piece.

Here is what I did, hope you can make out what I did.

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Old 09-18-2011, 01:57 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

Velcro....

I'll post photos of mine once completed, probably by next weekend.
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Old 09-18-2011, 02:07 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)


Quote:
ORIGINAL: SerpentCT4S

I have the same chassis and I run a lipo stick pack, not a saddle. You need to put something so the battery doesnt move though. I used a few battery posts attached to the purple piece.

Here is what I did, hope you can make out what I did.

Rock on. ThunderbirdJunkie has also considered using one of the Losi short 3800 packs for the 22. Trying to keep a low polar moment...saddles seem to be the answer. Tons of stick packs, though, so, it helps not having to spend $100.
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Old 09-18-2011, 02:30 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

Hey, is that a Savage hingepin brace?
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Old 09-20-2011, 05:22 PM
  #1214
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

How is the weight balencing done?
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Old 09-21-2011, 05:28 AM
  #1215
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

yea Tower usually has great customer service
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Old 09-21-2011, 05:43 AM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)


Quote:
ORIGINAL: ThunderbirdJunkie

Hey, is that a Savage hingepin brace?
Yes it is.
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Old 09-21-2011, 09:16 AM
  #1217
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

Hey guys. Ive been researching and i think instead of getting a tt-01, im going to get the sprint 2 drift. I want to have another set of normal rubber or foam tires as well. Which would work best for like stone and concrete? rubber or foam? i was thinking these ties for rubber. [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXUDL2&P=0]clicky for tires[/link]
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Old 09-21-2011, 09:18 AM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

Maybe even [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXLST4&P=0]these?[/link]
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Old 09-21-2011, 07:32 PM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)


Quote:
ORIGINAL: sunco1

Maybe even [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXLST4&P=0]these?[/link]

thats what i use, those are great for roads/parking lots. If you are looking for drift tires, these work good
http://www3.towerhobbies.com/cgi-bin...?&I=LXMRD5&P=Z
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Old 09-23-2011, 08:03 AM
  #1220
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

I used a standard 5X11 I found laying in my box, two shims slightly larger, one on each side act to guide the belt. One of my first mods because of the obvious lack of interest HPI took in designing this car.
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Old 09-23-2011, 09:00 AM
  #1221
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

Uncle Vinnie

Thanks for the info on how to fix the steering slop. I just received my order from Asiatees, after a month of waiting! So far it looks like good quality pieces and have no doubt it will make a world of difference. I do have a issue though. Right away I noticed the treaded holes on both aluminum arms are standard thread! Just something for everyone else thinking of doing the same upgrade to keep in mind when they go to start installation. So one more trip to the lhs and I will be in business, hopefully.
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Old 09-24-2011, 07:55 AM
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

Here it is guys a few photos of the Sprint with the lower/top deck Woven Graphite, AND BALANCED the way it showed be balanced.
I will explain, and post photos how to get it balanced the proper way, within a few minutes

Scale setup, all 4 scales are perfectly level with one another





Left side of the Sprint 2





Right side of the Sprint 2




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Old 09-24-2011, 08:21 AM
  #1223
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

ok why has no one post pics of the new sprint 2 with the orange bling? i would like to see the the under side of the chassis and bulk ends

uncle post more pics of your car......do you race?
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Old 09-24-2011, 09:06 AM
  #1224
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

Nice
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Old 09-24-2011, 09:26 AM
  #1225
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Default RE: OFFICIAL HPI Sprint 2 Thread (Sport and Flux)

Uncle Vinnie,

Just a little observation I noticed. I like your steering setup, however, you may want to take some measurements. I'll attach a picture to give you some clarity on what I'm describing.

Basically, the measurment you get for A1 should be equal to the measurment you get for A2. Now this distance looks to be very close from your picture, but I can't tell 100%. The one that would concern me is the the measurment of B1 and B2, they need to be equal as well and just looking at the picture I can tell they are not. What you are causing is the left wheel to travel farther in both directions than the right wheel. That could be useful if you were running an oval car, but if your running any kind of road course you'll have a car with different steering characteristics when turing left and right. Generally something you do not want.

Just trying to be helpful.

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