Is the HPI Baja 5b Fast?

Is the HPI Baja 5b Fast?
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Is the HPI Baja 5b Fast? - 6/6/2006 2:29:52 PM

Capital Bulldogs

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I know its not meant to be a street racer, but I have always like my RC cars to be quick thus I usually end up switching out engines adding 2 speeds etc, and so far from the videos that I have seen and the comments I have read, it appears that Baja is slow. Can anyone estimate about how fast the stock baja is? 35MPH? And if I wanted more speed is there anything currently available to do upgrade outside getting a bigger motor?

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 2:37:50 PM

Doohan

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It's slow, and the gearing is too short.
I think it runs 17 pinion/ 57 spur....should be about a 20/22 to 48/46.
The CY 23cc is a pig, the best thing to do is stick a 26cc or 29cc Zenoah in it.
My FG Monster Truck does 90 KPH...about 55 MPH with a zenoah.

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 2:38:15 PM

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posted speeds are about 29mph out of the box, knock off the exhaust stinger and your at 39mph out of the box, beef up the engine/ stuffed crank, shaved head, oversized piston and 50s just around the corner. by pig do you mean weight wise or gas consumption wise, cuz im getting about an hr per tank. the thing is heavy, but my Bergonzoni is just as heavey if not a bit more.
Timmahh

< Message edited by Timmahh -- 6/27/2006 5:04:05 PM >

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 2:39:18 PM

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Only 29mph out of the box. If you take the extension tube off, extreme RC says you get 10 more mph. Then there's the X-Can, there are also several tuned pipes in the works. That's it for the moment other then the fact there are endless options for the motor.

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 3:25:10 PM

radio_controlled_mad

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not sure removing the pipe off the baffle box adds 10mph,a top of the range tuned pipe wont even add that,,,and thats all the stock can is - a baffle box with a metal tube (not a stinger) to deflect the smoke/unburnt oil,,,,fg monster models have longer exit pipes on there stock cans (which are the same) and have yet to read a post about the increase or lack of peformance removing these give - it would be cheaper than spending £150 on a samba,,,i think its more to do with gearing

< Message edited by radio_controlled_mad -- 6/6/2006 3:40:45 PM >

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 3:33:55 PM

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Well the info comes from somebody with a radar gun, so whatever. I also don't see why it's so hard to understand restricting exhaust flow slows it down? Why also does everything go back to FG?? Does the FG use the same size tube??

< Message edited by TurtleRacing -- 6/6/2006 3:47:49 PM >

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 3:52:36 PM

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the speed increase by removing the stock stinger has been noted by many owners as viable already. not being contradictory here. this has been posted on and verified at the HPI BAJA forum buy current owners.
hth
Timmahh

< Message edited by Timmahh -- 6/6/2006 3:54:00 PM >

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 3:59:03 PM

radio_controlled_mad

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when you remove the extension pipe it will make it louder which generaly gives you the impression your going fasters when your not,the stock can is all it is "stock can" there is no restriction to hold back the engine.it is not a stinger - stingers are used on top-end tuned pipes and run into the $$$hundreds,the can has a metal exit pipe not a stinger.if it was that simple to get a extra 10mph out any make of stock engine then it would be commen place...most if not all get there models from stock with the same baffle box and some with longer extension pipes

samba tuned pipe with "stinger" (stingers add to the engine not decrease it)

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< Message edited by radio_controlled_mad -- 6/6/2006 4:07:50 PM >

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 4:14:01 PM

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Trust me Timmahh, he knows way more then any radar gun & that'll never change. I'm sure extreme Rc & everybody else that checked it was going on sound alone & there's no way a long piece of small diameter tubing can restrict a motor!

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 5:18:43 PM

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yep totaly agree with rcm like a real exhaust remove a bit theres not alot of pressure sounds louder thats all - exhausts are normally made in a specific way even tuned pipes -remove bits and it would surely drop the performance

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 5:29:58 PM

Tigger N. Bennie

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quote:

ORIGINAL: Capital Bulldogs
Can anyone estimate about how fast the stock baja is? 35MPH? And if I wanted more speed is there anything currently available to do upgrade outside getting a bigger motor?

If you want more speed, have the engine modified (just like any other engine) or change out the gearing if and when optional gears become available. If you really want speed, then go electric. For that matter H.A.R.M. has a brushless 1/5th scale, but if you run some 8000mh 5-cell lipos, be prepared to spend some big bucks.

quote:

ORIGINAL: Doohan
I think it runs 17 pinion/ 57 spur....should be about a 20/22 to 48/46.

I'd say the gearing needed depends on the track, just like any other R/C. In my opinion, the Baja5B had plenty of speed for the track I ran it on. And yes, the pinion is a 17T and the spur a 57T.

quote:

ORIGINAL: TurtleRacing
Trust me Timmahh, he knows way more then any radar gun & that'll never change. I'm sure extreme Rc & everybody else that checked it was going on sound alone & there's no way a long piece of small diameter tubing can restrict a motor!

I could probably hook up the tach on my Nomadio Sensor, but I figure that members would just then argue that my Sensor is off.

< Message edited by Tigger N. Bennie -- 6/6/2006 5:33:10 PM >

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 5:39:01 PM

radio_controlled_mad

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leaving the hpi v fg b/s aside...

removing the exit pipe on a stock can on say a fg monster which has the same engine,same can & same size exit pipe as the baja will not give a 10mph increase...thats all it is "a can",,,top end pipes only add 1bhp - porting adds 1bhp,removing a metal pipe does not add 1bhp

i think it has more to do with the hpi17/57 gearing compared with fg18/46 or 16/48 - could be wrong as im not sure how many teeth the hpi dif has.

< Message edited by radio_controlled_mad -- 6/6/2006 5:40:45 PM >

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 6:04:40 PM

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Ok, the radar gun lies & so does the mag, I believe you!

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 6:10:20 PM

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Xtreme RC Magazine Clocked the Baja at 39.8 mph stock.

I like mine!

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 6:14:06 PM

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i think what we need are some dyno results
as far as the pipe is concerned if that was the case we would be doing it with the fg stock pipe why spent 100 -150 on a performance pipe when all you have to do is remove the pipe of the stock and hey bisto its a fully tuned performance exhaust

< Message edited by kinggeordie -- 6/6/2006 6:17:41 PM >

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 6:15:37 PM

radio_controlled_mad

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well theres a great tip for all those guys with a stock cy or zen which has the same stock can and exist pipe (the make of car is irelivent) just remove the exit pipe,10mph increase without spending a fortune on modding the engine....instant 25% power increase

< Message edited by radio_controlled_mad -- 6/6/2006 6:18:19 PM >

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RE: Is the HPI Baja 5b Fast? - 6/6/2006 6:19:36 PM

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lol maybe if we remove the exhaust it might do 100mph

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