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Is the HPI Baja 5b Fast?

Old 06-06-2006, 12:39 PM
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Default RE: Is the HPI Baja 5b Fast?

ORIGINAL: Tigger N. Bennie

Why don't you just try to find the magazines that have been mentioned? Myself, I haven't read them either but I'm also not arguing abut it either since if I want a fast R/C car, it is not going to be a large scale gasoline/oil mix R/C. Heck, I'm just trying to keep the peace in yet another petty disagreement.

That magizine .....it wasnt trying to promote the Baja5 was it??? That might be a reason to bend the truth alittle....As with all magizines and newspapers. even the news on TV.....You cant beleive everything your being told


I think if removing the extension pipe made such a big improvement.... all the other 1/5 drivers would have removed that piece along time ago and that would be one of the recomended upgrades for all vehicles

Why spend the $$$$ on a tunepipe when removing the extension pipe gives you better top end than the tunepipe

Thats a good one!!!!
Old 06-06-2006, 12:48 PM
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Default RE: Is the HPI Baja 5b Fast?

The member mentioned magazines--plural. As mentioned, I haven't read them and apparently like you, I also don't believe everything I read in magazines. I also don't believe everything I read on a forum. However, that would mean that every member posting on this thread would probably need to purchase their own Baja 5B and time it with their own calibrated speed gun. And even if that happened, the opinions would probably be different unless everyone used the same fuel, had the RC tuned the same, and ran at the same time to make sure the track conditions were the same. Then again, there may be subtle differences in the engine. Consequently, if someone's only concern is about speed, I suggest that they purchase an electric. Then again, nobody has to believe that magazine or the people at Guinness World Records.
Old 06-06-2006, 12:52 PM
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Default RE: Is the HPI Baja 5b Fast?

These CY and zenoah engines work the same way reguardless of which vehicle its on ..... it wont produce more HP just because its in the Baja5
Old 06-06-2006, 12:56 PM
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Default RE: Is the HPI Baja 5b Fast?


ORIGINAL: hellya

These CY engines work the same way reguardless of which vehicle it on ..... it wont produce more HP just because its in the Baja5
it does if you take a 2 page full colour spread on the following page
Old 06-06-2006, 01:04 PM
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Default RE: Is the HPI Baja 5b Fast?

ORIGINAL: hellya
These CY and zenoah engines work the same way reguardless of which vehicle its on ..... it wont produce more HP just because its in the Baja5
So the bottom line is that they are both slow. Big deal. I could have wrote that a long time ago.
Old 06-06-2006, 01:07 PM
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Default RE: Is the HPI Baja 5b Fast?

No.....they have the same HP engines......they are just geared differently... a stock MT or firehamer will hit 35-40 mph out of the box because they have a different gear set up.

If you change the gearing around on the Baja5 you will get more top speed than taking off the extension pipe!
Old 06-06-2006, 01:18 PM
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Default RE: Is the HPI Baja 5b Fast?

ORIGINAL: hellya
No.....they have the same HP engines......they are just geared differently... a stock MT or firehamer will hit 35-40 mph out of the box because they have a different gear set up.

If you change the gearing around on the Baja5 you will get more top speed than taking off the extension pipe!
I understand that is also about gearing! I could see some rational with the pipe, but not a large increase unless the pipe was very restrictive--the extension is a smaller pipe and has two sharp bends. I just keep thinking about how I used to run "headers" on a real automobile--some increase, but not a lot. As mentioned earlier, I also haven't read the magazine articles though it is plenty fast for the track I ran on. For that matter, even the 1/8th scales can't run wide open either so at times torque, is more important to me on a track with lots of turns since the gearing can be changed. It is my understanding that HPI is also supposed to be coming out with a tuned pipe though I don't know when or how much.
Old 06-06-2006, 01:24 PM
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Default RE: Is the HPI Baja 5b Fast?

So far, I haven't seen proof it doesn't work!! Oh, other then it doesn't work on FG of course, that settles it!! Worst part is, I really don't care if it works or not, I just passed info along that was printed in a Mag.
Old 06-06-2006, 01:25 PM
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Default RE: Is the HPI Baja 5b Fast?

When I looked at the Baja the extension pipe was smaller than the diameter of the extension pipe on my FG MT5.

They were not the same size in diameter at all.
Old 06-06-2006, 01:43 PM
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Default RE: Is the HPI Baja 5b Fast?

The exhaust on these engines play a HUGE part to how they run. It differs from brand to brand. The smallest modification can make a noticable difference. A tuned pipe on one car may not work well at all on another. Tip extensions on the exhuast also plays a huge part. Anyone that has had any type of experience with these engines will agree that the pipe is only part of the story, the rest of the "fine" tuning is done with the tip and header. No exhaust performs to its max out of the box. Conditions will vary and dyno results have nothing to do with real world driving. I dont find it hard to believe a 10mph gain at all with removing the tip. It may just create the right back pressure for gearing that is installed in the car. I personally have seen much more dramatic results, good and bad while fine tuning myself.
Old 06-06-2006, 01:44 PM
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Default RE: Is the HPI Baja 5b Fast?

Guys the removasl of the exhust extension does increase power significantly , maybe not 10mph, but R Drvier magazine also said that it gave a 7 mph increase. They got it to 30mph stock, and aftr removing the xtension 36.8 mph.
Old 06-06-2006, 01:49 PM
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Default RE: Is the HPI Baja 5b Fast?

So in your opinion, would it be better to wait for the HPI tuned pipe or at least wait until some other company actually releases a tuned pipe specifically targeted toward the HPI Baja 5B instead of simply trying a tuned pipe that has already been released for another brand of R/C due to the actual physical configuration of the Baja5B, as well as the specific engine type and brand?
Old 06-06-2006, 02:07 PM
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Default RE: Is the HPI Baja 5b Fast?

Tigger, I NEVER discourage experimenting. That is what founded this hobby. With these engines, its not as easy as just bolting on a fat pipe. Tire size, weight, elevation, gearing, etc, also play a large part on how a pipe will perform. A good example is I have a pipe at home that was built stricktly on a dyno on a engine running methane. It was created to maximize power throughout the power band and it yeilded some unbelievable results. This was built by a famous small engine pipe builder as a prototype. I still cant find a car or configuration that this thing will work on! It was not what it cracked up to be. On my monster trucks, the best pipe is just a header with an extension just the right length running out the body,
Old 06-06-2006, 03:42 PM
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Default RE: Is the HPI Baja 5b Fast?

Thanks for your response. Perhaps, I'll wait for a few others to "test & tune".
Old 06-06-2006, 04:27 PM
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Default RE: Is the HPI Baja 5b Fast?

juz get an fg with samba,, problem solved!
26 cy or zen
Old 06-06-2006, 04:33 PM
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Default RE: Is the HPI Baja 5b Fast?

heres mine.
http://i56.photobucket.com/albums/g1...E/P4020055.jpg
Old 06-06-2006, 04:34 PM
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Default RE: Is the HPI Baja 5b Fast?

oops did i say fg,sorry!!
honest..
Old 06-06-2006, 04:55 PM
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Default RE: Is the HPI Baja 5b Fast?

Way to thread crap again rchertz.
Old 06-06-2006, 04:57 PM
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Default RE: Is the HPI Baja 5b Fast?

ouch[:@]
Old 06-06-2006, 04:59 PM
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Default RE: Is the HPI Baja 5b Fast?

thats forums for yer!!
Old 06-06-2006, 05:15 PM
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Default RE: Is the HPI Baja 5b Fast?

o well,,
like a sed
thats forums for yer,,lol f

g
Old 06-06-2006, 05:17 PM
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Default RE: Is the HPI Baja 5b Fast?

petty!!
Old 06-06-2006, 05:18 PM
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Default RE: Is the HPI Baja 5b Fast?

it now seems you cant even say fg!!
i wont sleep tonite!
honest...
Old 06-06-2006, 05:32 PM
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Default RE: Is the HPI Baja 5b Fast?

group hug!!
Old 06-06-2006, 06:50 PM
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Default RE: Is the HPI Baja 5b Fast?

Ok. Went out and removed the tube from my Baja. There is a noticable change in power compared to it being on, but its still not near as snappy as my Traxxas Monster buggy or the FG MB I sold. It went from not spinning the tires in grass to spinning them so is not just noise. I started to look at he cans on both motors and the one on the HPI is alot smaller than the one that comes on the FG or Traxxas. The muffler on the HPI is 3.5" tall, 2.5" wide and 1.625" deep with a 12 mm hole. The muffler on the others is 4" tall 3" wide and has the same depth with a 15mm hole. I saw a decent change in power without the extension pipe but it needs a tuned pipe or an X-can to wake it up. You can slide the tube from the Baja inside the hole on the Traxxas. Thats how much smaller the pipe is. The can from the FG or Traxxas will not fit the HPI because of the roll cage. That must be why they made a smaller muffler for it. They should have just made the cage a bit wider in the back and gave us full power. I'm going to pull the muffler off and put it on the Traxxas to see if it acts the same. If it does I will Know 100% that its the small muffler. You can almost hear the intake noise over the exhaust in stock form, thats how restrictive it is. Just like an EPA legal dirt bike or quad.

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