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Old 04-05-2007, 08:40 AM   #16
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Quote:
Originally Posted by Tabushi
Go for the ACE S1015 servo ... GREAT servo, almost bullet proof and cheaper than others ... look it on amainhobbies.com

cya,
That is a nice servo
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Old 04-05-2007, 08:42 AM   #17
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I like that it has an included tuning guide
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Old 04-05-2007, 10:02 AM   #18
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Quote:
Originally Posted by Illbreakthat
I wont tell her (unless i talk in my sleep).
now why should that statement alone worry Gregg?

anyone?
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Old 04-05-2007, 11:15 AM   #19
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Good luck Gregg, I think it will be a worth while project. And as long as it doesn't turn into a money pit
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Old 04-05-2007, 11:37 AM   #20
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I hope it is not a money pit
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Old 04-05-2007, 11:39 AM   #21
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I dont want to talk about it anymore lol.... my figers feel unclean just typing Hellfire
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Old 04-06-2007, 12:06 AM   #22
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Quote:
Originally Posted by Rosco
now why should that statement alone worry Gregg?

anyone?
LOL... Jay still has a crush on Melanie... obviously...
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Old 04-06-2007, 12:11 AM   #23
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Here's some more build photos...

So far, so good. The chassis plate looks strong, is thick, and has been milled out in the right places to lighten things up and allow for a lower mount for components making the center of gravity as low as possible.

The nubz tires are all glued on very well...

The instruction manual is very well written, easy to understand, pictures are great, and the parts are shown full scale so it's easy to make sure you've got the right stuff...

I noticed the diff pinion gear teeth are slightly curved... Hmmmm, interesting.

The diff ring gear looks nicely machined. So does the pinion, for that matter.
Attached Thumbnails
HPI Hellfire SS Kit Build & Long Term Review-hellfire-build-photos-015.jpg   HPI Hellfire SS Kit Build & Long Term Review-hellfire-build-photos-016.jpg   HPI Hellfire SS Kit Build & Long Term Review-hellfire-build-photos-017.jpg   HPI Hellfire SS Kit Build & Long Term Review-hellfire-build-photos-018.jpg   HPI Hellfire SS Kit Build & Long Term Review-hellfire-build-photos-019.jpg  

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Last edited by MadHacker; 04-07-2007 at 10:26 PM.
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Old 04-06-2007, 12:21 AM   #24
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The first part of the build is to put together the diffs. They went together easy, however, they use a weird aluminum seal instead of the typical paper/fiber ones... Hmmmm... Once together, with oil, the diffs feel smooth. No issues here.

After I assembled the diff inside the case... I noticed the pinion and ring gear mesh are a little rough because they're meshed slightly tight. There really isn't any room for adjustment with these diff cases, they're designed to not allow any slop... I hope the pinion and ring break in and run smoother than they do now.

One thing about the pinion gear... as I noted above (see photo 4 in post 23) it's a slight spiral cut gear and the ring is straight cut. I'm not sure what the deal is with that. Any ideas?

Shouldn't have any issues with the shock towers... thick material!
Attached Thumbnails
HPI Hellfire SS Kit Build & Long Term Review-hellfire-build-photos-020.jpg   HPI Hellfire SS Kit Build & Long Term Review-hellfire-build-photos-021.jpg   HPI Hellfire SS Kit Build & Long Term Review-hellfire-build-photos-022.jpg   HPI Hellfire SS Kit Build & Long Term Review-hellfire-build-photos-023.jpg  
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Old 04-06-2007, 12:26 AM   #25
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Quote:
Originally Posted by T493
Is that enough torque
HPI states in the manual that a servo with a minimum of 160 oz in of torque should be used... I have used servos with under 100 oz in on my big heavy savage, and they turn the wheels just fine!

I'll try the 758... if it isn't enough, then I'll put it on the throttle/brake and will pick another servo for the steering with higher torque. I guess I picked the 758 because I'm addicted to high speed servos! My favorite, the Hitec 5925, is no longer being made... and the replacement from Hitec is slower :-( So... I'll try the Airtronics 758 and see how it goes.
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Old 04-06-2007, 12:30 AM   #26
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Quote:
Originally Posted by Tabushi
Go for the ACE S1015 servo ... GREAT servo, almost bullet proof and cheaper than others ... look it on amainhobbies.com

cya,
Well, the specs are certainly impressive!

.10 sec transit time with over 200 oz in of torque!

I'll try this servo if the Air 758 doesn't work out.
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Old 04-06-2007, 06:24 AM   #27
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From what I can see... once the truck is assembled it would be a pretty major undertaking to get the diff's out for a diff fluid change.
Instead of building the diff/bulkhead parts like a typical 1/8 scale racer, they seem to have put the diffs inside what looks to me like a Revo inner diff housing.
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Old 04-06-2007, 07:14 AM   #28
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Quote:
Originally Posted by DiscoDan
From what I can see... once the truck is assembled it would be a pretty major undertaking to get the diff's out for a diff fluid change.
Instead of building the diff/bulkhead parts like a typical 1/8 scale racer, they seem to have put the diffs inside what looks to me like a Revo inner diff housing.
But it is fully sealed and you can lubricate them
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Old 04-06-2007, 10:32 AM   #29
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I still like the looks of the hellfire.
I noticed that as soon as Gregg gets one and we see it being build it is an OK looking truck but when I wanted to get one it was the worst looking thing on earth.

Last edited by T493; 02-02-2008 at 07:24 PM.
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Old 04-06-2007, 11:54 AM   #30
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Hahaha... I still would not buy one for myself ... nor would I recommend one for racing.

In my opinion the biggest factor on deciding what brand of race machine to buy IN ANY CLASS is what everyone else is running.
If you go with a machine that lots of people at your track are running you will have an easy time getting setup tips, spare parts, and repair help.
Adversely... if you get a machine that few or no people run at your track these advantages simply aren't there for you, you are on your own.
This more than anything is how I determine what I race.
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