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Old 12-30-2012, 01:44 PM   #241
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hey Marv, what kind of shocks or springs do you use on your sprint? thank you.
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Old 12-30-2012, 03:16 PM   #242
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where it is most needed upgrade at sprint?
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Old 12-30-2012, 04:40 PM   #243
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Quote:
Originally Posted by cheehtae View Post
hey Marv, what kind of shocks or springs do you use on your sprint? thank you.
I am running the OEM shocks that came with the S2.
I use HPI shock spacers to preload.
I currently have one spring set up for carpet.
I'm working on a different one for vinyl flooring because my current spring combination exhibits excessive body roll (on the vinyl floor).

I am using Solaris S-TSHGM4W pre-mounted asphalt tires on vinyl flooring in a local TC Class and they hook up quite nicely so far.

Current USVTA Setup Sheet Voodoo =



HPI SPRING CHART




Last edited by Marv; 12-31-2012 at 09:42 AM.
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Old 12-30-2012, 04:54 PM   #244
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Quote:
Originally Posted by SNIPER95 View Post
where it is most needed upgrade at sprint?


IMO - in order of importance =

1) Tighten the steering = RPM Ball Cups & the center link spring fix in post #169, 170 or 179
2) Hex nut fix & axle shims
3) Rear belt tensioner
4) Kevlar belts


With that done you can enjoy your Sprint 2 on a continuing basis.

If you intend to race your Sprint 2 at a track, then you have more work to do.



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Old 12-30-2012, 11:29 PM   #245
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Thanks Marv,

sorry for my bad English
Quote:
Okay, got it now = thanks JK!


rodi =

Yes the Sprint 1 parts work, but you have to modify the parts slightly.

I have not done a conversion, but bobbyb323 did do it =

Read post #137 = HPI Sprint 2 Mods - Making a silk purse from a sow's ear.
try another this mod?
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Old 12-31-2012, 06:01 AM   #246
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Default Rear belt tensioner

Has anyone else noticed that the Sprint 2 has a rear belt tensioner built in? On either end of the shaft that your spur gear is attached to are black plastic bushings that are on both ends of that shaft that mount it to the Aluminum uprights. Those bushings are keyed and you can change positions on that shaft tightening the rear belt. Of coarse I didn't figure this out until I had already bought the extra tensioner.
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Old 12-31-2012, 06:06 AM   #247
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Quote:
Originally Posted by Marv View Post
I am running the OEM shocks that came with the S2.
I use HPI shock spacers to preload.
I currently have one spring set up for carpet.
I'm working on a different one for vinyl flooring because my current spring combination exhibits excessive body roll (on the vinyl floor).

I am using Solaris S-TSHGM4W pre-mounted asphalt tires on vinyl flooring in a local TC Class and they hook up quite nicely so far.

Current USVTA Setup Sheet Voodoo =


HPI SPRING CHART


Marv I can't get your pics to enlarge on this post. Are you running stock springs on your shocks? What oil are you running in the shocks. This is kinda weird I don't know many Marvs but that's my name too. Marv 2 with the Sprint 2
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Old 12-31-2012, 06:54 AM   #248
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Marv great work on the thread
I got a question for u i have been building my s2 as a racer basher
But racing 17.5 carpet now wat gearing is good for this setup can i get it down to the 3.8 to 4.1 fdr range or am i to low
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Old 12-31-2012, 07:07 AM   #249
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Quote:
Originally Posted by Scionara05 View Post
Marv great work on the thread
I got a question for u i have been building my s2 as a racer basher
But racing 17.5 carpet now wat gearing is good for this setup can i get it down to the 3.8 to 4.1 fdr range or am i to low
I'm interested in Marv's gearing too. I have my sprint 2 set up for 17.5 also. I went with 64 pitch gears, real smooth. I have a 45 pinion and a 100 spur. My motor stays cool and I can run with the other rookies in my class.
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Old 12-31-2012, 07:32 AM   #250
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Aught six wat class are u runing
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Old 12-31-2012, 09:36 AM   #251
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Quote:
Originally Posted by Aught-Six View Post
Has anyone else noticed that the Sprint 2 has a rear belt tensioner built in? On either end of the shaft that your spur gear is attached to are black plastic bushings that are on both ends of that shaft that mount it to the Aluminum uprights. Those bushings are keyed and you can change positions on that shaft tightening the rear belt. Of coarse I didn't figure this out until I had already bought the extra tensioner.

Yeah, those are a gem =
If you go one way to tighten the rear belt it loosens the front belt.
And if you go to tighten the front it loosens the rear.


Last edited by Marv; 01-01-2013 at 01:29 PM.
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Old 12-31-2012, 09:43 AM   #252
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Quote:
Originally Posted by Aught-Six View Post
Marv I can't get your pics to enlarge on this post. Are you running stock springs on your shocks? What oil are you running in the shocks. This is kinda weird I don't know many Marvs but that's my name too. Marv 2 with the Sprint 2

Photobucket made some changes that I didn't catch =
Sorry.

Quote:
Originally Posted by Marv View Post
I am running the OEM shocks that came with the S2.
I use HPI shock spacers to preload.
I currently have one spring set up for carpet.
I'm working on a different one for vinyl flooring because my current spring combination exhibits excessive body roll (on the vinyl floor).

I am using Solaris S-TSHGM4W pre-mounted asphalt tires on vinyl flooring in a local TC Class and they hook up quite nicely so far.

Current USVTA Setup Sheet Voodoo =



HPI SPRING CHART




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Old 12-31-2012, 01:23 PM   #253
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Quote:
Originally Posted by Scionara05 View Post
Aught six wat class are u runing
We have a class called Sportsman that is for our new drivers, it is run what ya brung so the new guys can buy RTR such as the sprint to get started. I plan on moving into 17.5 Sedan so I have set my car up to their specs as best I can. Once your lap count gets up in Sportsman you are asked to move into one of the other classes such as VTA or 17.5 Sedan. Our classes have good car counts and we've found that having the Sportsman class keeps new guys coming in.
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Old 01-01-2013, 07:16 AM   #254
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which servo is good for drift?
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Old 01-01-2013, 10:41 AM   #255
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Any servo is not bad for drift, but i would go with a high speed one, that way you can always counter steer pretty quickly.

Aught-Six - i didn't know that was there! No mention if it in the manual! I tightened my rear belt, and with my front tensioner, i re-tightened my front one!
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