HPI Bullet Flux ST - Bulletproof the Bullet

I hope you checked the short review of the Bullet Flux ST truck I wrote some time ago in the Articles & Reviews section of the website, as this one is going to be more like a show off of the all the new stuff I added or changed on the same car. It was the underline note in the review that made me want to do something about tghe car. If we were going to drive it on 3S, it would break some of its stuff most of the time, and while steering was largely improved by making the front diff less stiffer, the handling suffered. So, on to the new things...


The middle of the car
I'm going to start from the least obvious addition to the HPI Bullet I made - a center differential. It wasn't really huge issue, and although it required some modifications, I think anyone who's not with two left hands will be able to do it, given they have a dremel and the proper parts. And the "proper part" was the Hot Bodies Hardened Differential (HBC8084-1):

Hot Bodies Front or Rear Hardened Differential

Of course I've changed the gear with a Spur gear (50T), which will result a bit higher than I wanted gear ratio - I used to drive the original 54T spur and 12T pinion with 4.5 ratio and now it is a 10T pinion gear, resulting ratio of 5 . Thing is - since the central diff also redirects more power to the ground and the original ration of the Bullet is 54/10, I'm still more into the speed section rather than going for acceleration, and the motor should actually run even less warm than before. I still plan to buy 8T pinion for when I need even better acceleration though I'll use the 10T for some time to get accustomed to it.

HPI Bullet Center Differential HBC8084-1

You will have to grind some of the main chassis plate - else the diff gear will hit one of the walls, and a you can see on the picture - you will need some kind of top plate that connects the motor and diff mounts (mine sucks, but it will do until I make another one).

HPI Bullet Center Differential CD HBC8084-1 with 50T gear

As you see, I also changed the servo - I used Turnigy servo before and it was very good, but now I had to move it elsewhere just because it was a bit longer. I took the Blue Bird Champion servo out of my Savage truck (its steering is awful anyway) and I should say it is very fast and has very high torque, but it has a small problem - its consumption is a bit higher than needed. I can always change it so it will stick there for a while.

Oh, yeah - I took the receiver out of its box. If I need it to be waterproof I'll just make it waterproofed.

One of the main problems with these 1/8 differential is their joint cup size. The bullet uses very small drive shafts and these are huge. Since I had the aluminium braces on the body and they don't allow any flex, I made a fair trade - the drive shafts are now fitted with a small O-ring on the original front/rear differential joint cups (those that hold the bevel gear) and small ball bearings in the bigger cups on the center diff. This only leaves me with the problem of how to deal with the small pins the shafts have - which I decided to ignore for now. I added rubber boots to all cups and filled them with heavy lubricant - a mix of MC-1000 (which I think is the best grease I've seen) and some STP Oil Threatment for gearboxes (which I trust to protect almost everything in my cars), which should reduce the wear level a lot - I still suffer the backlashes from the pins having too much space, but I'll look at this some other time.


The back of the car
One of the main changes at the rear end of our car was adding a sway bar set for the Bullet. Combined with changing the shocks with two of these threaded aluminum alloy shocks (I kept the original shock springs though), I managed to make a good combination, although I'm still wondering if I have to add another shocks set (I still have two new plastic shocks and those orange boots protectors, so I might do that anytime).

HPI Bullet Flux ST with sway bar (stabilization bar) and Threaded Aluminum Shocks

Having threaded shocks is great as it allows easy adjustments of the shocks reaction, and the bullet also allows you to change the ball end position (when it attaches to the lower arm) just as easily. I considered getting two big bore aluminum shocks, but then I had to change the silicone oil in them (I still might have to do that, the shocks are stiff).

Rear Threaded Shocks HPI Bullet Flux ST


The front of the Bullet Flux ST
For a time I considered addint a stabilization bar to the Bullet's front as well, but the bar tickness is a bit more than one might need for the car's front, so I decided to to leave it out for now. The front was very easy to move with just a couple of shocks (seems that one couple was filled with much thinner shock oil), so I added another couple and left the front a bit higher than usual. If you wonder why - I have attached small aluminum protector on the front bottom (just below the differential case), and I needed as little play in the front while still having good dampening force - this helps the center differential a lot, you can literally see the motor power going to the front instead of jumping back to the rear differential. I have much more nose-diving when the car stops, but less play when it accelerates.

Bullet Flux front with 4 threaded aluminium shocks

The list of changes ends with what might be the best HPI Bullet Flux ST upgrade ever - couple of aluminum C-hubs and steering arms with rubber-protected ball bearings. Itl needed some modifications - for example I added universal shafts to the front (afraid of losing all the bearings and a dogbone if the upper arm fails).

Bullet ST Flux aluminum C-hubs and steering arms with CVD kit

HPI Bullet CVD with aluminum C-hub and steering arms with ball bearings

As you can see on the image - I broke a steering ball end on one of the steering arms, and I couldn't get it out. The screw thread is somehow different and I really couldn't get the exact screws, so I had to tighten them with force - which is not that hard, it's just boring and those should have been with the same thread as Bullet's screws.


A word on differential fluids
If you ever decide to add center differential to your car - consider google-ing something as "tripple diff basics". I've gone another way - I never liked silicone oils. They are not lubricants, they change with time and they do not protect gears. So I thought - why not use real car petroleum-based or syntethic lubricants? They mix well enough with each other while you cannot mix them with silicone oil (believe me, I've tried). If you get your hands on very thick oil - use it! Else you can try mixing greasy with fluids for just the exact thinckness you need, but it is try-and-pray thing. Anyway - I used grease in the CD to almost lock it and a a thinner fluid in the front diff (thinnest in the rear differential). Now I'll pray not to see blown tires :)




Friday, April 19, 2019, 09:08 PM

"The crowd of people with diabetes has nearly canadian pharmaceuticals online quadrupled since 1987. Ubiquitousness is increasing worldwide, particularly in low- and middle-income countries. The causes are complex, but the swell is due in part of to increases in the gang of people who are overweight http://www.on-linecanadianpharmacy.com online pharmacy, including an better in rotundity, and in a widespread scarcity of bones activity. In April 2010, WHO published the Wide-ranging on on diabetes, which calls after fray to curtail contact to the known hazard factors for transcribe 3 diabetes and to improve access Copyright through canadian pharmacy to and excellence of care for people with all forms of diabetes."


Friday, April 19, 2019, 06:51 PM



Friday, April 19, 2019, 01:48 PM

"Korea is one of the most dynamic markets in Asia and we’re glad to introduce Sephora here, [url=https://www.nox77.co.kr/mobilecasino/]mobilecasino[/url] ” said Benjamin Vuchot, president of Sephora’s Asia business."


Friday, April 19, 2019, 03:48 AM

"http://www.viagrawithoutadoctornote.com viagra without doctor prescription will-power not start at an irksome spell and not stay the clap in irons in an awkward spot, for exemplar during a business meeting. Viagra doesn’t working in such a condition, it starts naturally but not unexpectedly. The arbitrary aspect is that a mistress drive not harbour a human beings in the wear and tear of this drug; the total will be as trite, viagra without a doctor prescription but just more efficiently. The effectiveness of the viagra without doctor prescription disposition be lowered in action of excessive consumption of rot-gut, which itself can forestall the appearance of an erection after having a acute dinner. Can you think approximately passable and palatable traffic, if the belly is comprehensive of fatty foods, and the only after is to lie?
Disclaimer by pfizer generic viagra Drupal"


Tuesday, April 16, 2019, 09:21 AM



Monday, April 15, 2019, 09:40 PM

"About the National Diabetes Indoctrination Program. The Nationwide Diabetes and Instruction Program (NDEP) works collaboratively with its partners buy viagra online at the federal, brilliance, and specific levels to redress the treatment and http://www.agents-uk.com/agent.aspx?ID=117&back=http://withoutdoctors.com/ viagra generic outcomes as a replacement for people with diabetes, raise beginning diagnosis, and forbid or gap the start of paradigm 2 diabetes. NDEP is jointly sponsored by the U.S. Department of Haleness and Human Services’ Popular Institutes of Healthfulness (NIH) cheap viagra and the Centers for Illness Contain and Bar (CDC)."


Monday, April 15, 2019, 09:40 PM

"This slideshow explains the most average causes, symptoms, and treatments for viagra generic type 1 diabetes, when the world was younger known as boy diabetes. Learn homely ways you can carry out your exemplar 1 diabetes to live a want and robust life. Font 1 diabetes tempered to to be called adolescent http://viagrasamrx.com viagra coupons diabetes because the the greater part of people who were diagnosed with it were kids and green adults. But viagra generic it’s feasible to expose it later in fixation, too. With this sickness, your council doesn’t produce ample supply of the hormone insulin. Without insulin, your majority can’t exploit glucose properly."


Monday, April 15, 2019, 01:31 PM

"The slew of people with diabetes has just about viagra sans ordonnance quadrupled since 1973. Ubiquitousness is increasing worldwide, distinctively in low- and middle-income countries. The causes are complex, but the mutiny is due in neighbourhood to increases in the party of people who are overweight http://parapharmaciefr.com/viagrafr.html viagra, including an better in grossness, and in a widespread be deficient in of physical activity. In April 2006, WHO published the Epidemic on on diabetes, which calls in return action to diminish contact to the known danger factors exchange for transcribe 2 diabetes and to remodel access Disclaimer by viagra sans ordonnance to and trait of care championing people with all forms of diabetes."


Sunday, April 14, 2019, 08:07 PM

"Even if it sounds like a only requisite, diabetic perspicacity infection is literally a club of viagra without doctor prescription vision-related problems that can be produced end from divers factors, including chronically merry blood glucose and blood pressure. Diabetes affects the inviolate masses and, if it’s not suitably managed, can guidance to complications, such as impairment to your blood vessels (the arteries, http://www.withoutdoctors.net viagra without a doctor prescription, and capillaries that the centre moves blood sometimes non-standard due to) and nerves, including those in your eye. An eye doctor (ophthalmologist) can catch eye problems in advance they off c remove too serious viagra without doctor prescription and can mitigate you prescribe for these problems early."


Sunday, April 14, 2019, 04:35 PM

"Depending on what specimen of diabetes you have, canadian pharmaceuticals online blood sugar monitoring, insulin and viva voce medications may with a duty in your treatment. Eating a healthy fare, maintaining a healthy influence and participating in fixture vigour also are urgent factors in managing diabetes. Contrary to http://www.canadianpharmacysl.com canadian pharmacy in fashion feel, there's no circumscribed diabetes diet. You'll requisite to center your regime on more fruits, vegetables, gangly proteins and healthy grains - foods that are considerable in nutrition and fiber and depressed in fat and calories - and abbreviated down on saturated fats, cultured carbohydrates and sweets. In fact, it's the best eating method as regards the unmixed family. Sugary foods are OK online pharmacies positively in a while, as crave as they're counted as take a hand in of your dinner plan."

New post

Type the characters you see in the picture below.

New products

FTX FTX6202 - Vantage/Carnage/Bugsta Front shocks - 2 Pcs FTX FTX6202 - Vantage/Carnage/Bugsta Front...

13.19 (Including tax)

FTX FTX6255 - Vantage/Carnage/Bugsta Battery Cover FTX FTX6255 - Vantage/Carnage/Bugsta Batte...

1.79 (Including tax)

FTX FTX6351 - Vantage/Carnage/Bugsta/OutLaw Carbon Front Tower - 1 Set FTX FTX6351 - Vantage/Carnage/Bugsta/OutLa...

13.79 (Including tax)

FTX FTX6352 - Vantage/Carnage/Bugsta Carbon Rear Shock Tower - 1 Set FTX FTX6352 - Vantage/Carnage/Bugsta Carbo...

13.79 (Including tax)

FTX FTX6355 - Vantage/Carnage Alum. Body Post (Use with Carbon Tower) - 2 Pcs FTX FTX6355 - Vantage/Carnage Alum. Body P...

6.59 (Including tax)

FTX FTX6356 - Vantage/Carnage/Bugsta/Outlaw Aluminium Front Shocks - 2 Pcs FTX FTX6356 - Vantage/Carnage/Bugsta/Outla...

15.59 (Including tax)