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Old 12-24-2008, 10:37 AM   #16
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I remember the post's from Tex1 about this. I think he was running a 18T clutch bell. I don't remember the spur. Losi has released a 17T and 18T clutch bell's. I know I am gonna try it soon. I have all the parts. Just waiting to get a second car to do it on.
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Old 12-26-2008, 05:52 AM   #17
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It's possible that TEx1 is running a brushless conversion. I have the MBX5T ring & pinion gears in my MBX5R buggy for this reason. I was running a very high KV motor and needed to gear my MBX5R down more. I was already using an 11T pinion and didn't want to go down to the 10T. I actually wasn't afan of the 11T either. With the truggy diffs I was able to go back up to a 14T pinion and smaller spur gear. The car ran much better.

As for doing this in a nitro car, the only two advantages I can see are:

1] you can run a smaller spur gear which is lighter. Less rotating mass = quicker acceleration. Plus the motor will likely move more towards the center line of the car even though you're going up on the clutch bell.

2] taller clutch bells (15T or taller) feel much smoother than the small clutch bells we're used too. The gear mesh just feels smoother.
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Old 12-26-2008, 08:00 AM   #18
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Thumbs up 8B with truggy gears...

Actually the 10 tooth (Truggy gears) input to the diffs means the center diff spins at more RPM for a given wheel speed (you can only roll so fast in the corners) when in the corners. This means the motor does not have to work as hard comming out. This is what makes the car feel more punchy. If you carry any rolling speed at all in the corner the thing will feel like a rocket when you apply power on exit.
However, when you are at a dead stop the motor will not spin the tires loose because of the increased ratio.
Losi has since come out with new gears that make it possible to go to this setup using their stuff.
The Losi 45 spur combined to the 17T clutch bell should be killer. 11.38/1 is a solid ratio to start.
You do not need as much clutch either. I ran 3 carbons with green on 2 and gold on 1 & one longlife aluminum on 1 gold spring. This clutch lasted for ever.

I have setup several cars for people this way and they have all said it was way easier to drive. Around the corner with speed... roll the throttle a little and you hit the jump. Done deal. Better fuel milage to boot. You just don't need to be on the gas as much.

This is why alot of other manufacturers are going to these mid 11/1 ratios.

Beware - For you newer guys to this stuff. The car will be totally different! Rolling and punching the throttle will be ballistic. From a dead stop it will be more mellow.

Thanks for really looking into this Casey and Billy. I gave up on it when discussing it with Losi in 07'. Good to see some eyes open up.
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Old 12-26-2008, 09:29 AM   #19
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Nicely said Mr Tex.
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Old 12-27-2008, 08:57 AM   #20
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My car is now set-up with the 8T gearing. Gonna try it out today for the first time. Looking forward to it. I made a little gearing chart, with the assistance from Tex1. The overall gearing is on the left with the highest to the lowest. This way I can look at this and determine what bell and spur to change for any given overall.

8T Gearing in 8B
----------------

11.22 ------------- 47/18 = 2.61

11.38 ------------- 45/17 = 2.64

11.46 ------------- 48/18 = 2.66

11.88 ------------- 47/17 = 2.76

12.09 ------------- 45/16 = 2.81

12.14 ------------- 48/17 = 2.82

12.63 ------------- 47/16 = 2.93

12.90 ------------- 48/17 = 2.82


Stock Gearing 13/43 13/48
3.30 3.69 = 12.18
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Old 12-27-2008, 11:33 AM   #21
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well moot point now, i just bought an 808. it allready has the different gear ratio. thanks for the input and sorry to waste anybodys time.
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Old 12-27-2008, 10:02 PM   #22
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One thing to remember :

48 / 17 and 16/ 45 are almost the same gear ratio.. but 17/48 moves your motor WAY out from center
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Old 12-29-2008, 04:29 AM   #23
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The LOSA3552 is the 45T spur for the 8, but Horizon shows that it is for the 8E, does any know if it would work in the nitro 8?
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Old 12-29-2008, 06:26 AM   #24
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yes you can run the "E" spur.
the kyosho spurs fit also
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Old 12-29-2008, 06:55 PM   #25
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Where do we find the 17T bell for the Losi?
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Old 12-29-2008, 07:00 PM   #26
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Quote:
Originally Posted by Whosold View Post
Where do we find the 17T bell for the Losi?
http://www.horizonhobby.com/Products...rodID=LOSA9121
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Old 12-29-2008, 07:07 PM   #27
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Thank You.
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Old 06-03-2009, 12:32 AM   #28
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Quote:
Originally Posted by MikeFriery View Post
One thing to remember :

48 / 17 and 16/ 45 are almost the same gear ratio.. but 17/48 moves your motor WAY out from center
Hey fellas, kind of bringing this one back. I picked up an 8b which has the spur fairly worn so I will be picking a new one. Is 16/45 a good setup to run on the buggy?

This is what I gather from the thread, but just confirming. Thanks

edit: or even numerically smaller? 15/43 or something? to keep engine closer to center-line
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Old 06-03-2009, 01:46 AM   #29
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Quote:
Originally Posted by spawn_x View Post
Hey fellas, kind of bringing this one back. I picked up an 8b which has the spur fairly worn so I will be picking a new one. Is 16/45 a good setup to run on the buggy?

This is what I gather from the thread, but just confirming. Thanks

edit: or even numerically smaller? 15/43 or something? to keep engine closer to center-line
the stock gearing is 48/13, its a good combo and keeps the engine center
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Old 06-05-2009, 10:25 PM   #30
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Quote:
Originally Posted by losi_racer View Post
the stock gearing is 48/13, its a good combo and keeps the engine center
Sorry confused a bit, you are suggesting I use 48/13 or comparing it to 48/13? you are right I do have a 48/13 on the buggy now. Thanks my friend
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