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Tamiya DF-03 type

Tamiya DF-03 type

Old 03-08-2009, 08:56 PM
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When you get tired with your DF03, try this conversion:
http://www.oople.com/forums/showthre...321#post216321
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Old 03-08-2009, 10:56 PM
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Heya guys,

The front plate held up well after the last session. But alas we have had tons of rain the last week and a half and I'm gonna need to convert the DF-03MS to a swamp buggy....or just drive the Slash....

Paulie gave out and sold his DF03 to Iggy to buy a DB0whatever. Iggy developed a back plate for the rear shock brace, but he is on a business trip until April. I'm going to try to recreate it in CAD and run it through my CNC machine soon.

Laters.
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Old 03-09-2009, 07:40 AM
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well tell iggy to get back so we can see this plate he is talking about.

still waiting on some parts to arrive on my buggy, like a battery, and a servo saver, then its off to the races. i will try to get some updates for you guys thisweek.
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Old 03-09-2009, 06:12 PM
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Hi guys, I was wondering if any can help find a spur gear adapter for the DF-03? I'm using a 13.5 brushless and the spur gear doesn't allow for any larger pinions for me to get the ratio I need for the 13.5. Since the internal ratio is so low.(2.94) I need to gear really tall to make up for it.

If I use the spur gear set and the 78tooth spur from it, would I be able to fit a large enough pinion to within a 5.0 final ratio? If not then I really need a spur adapter for aftermarket spurs. Any help?

Thanks.
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Old 03-10-2009, 12:09 AM
  #455  
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YR4Dude, the hot ticket to do with this vehicle is slightly ream out (I mean SLIGHTLY) AE's B4/T4/B44 spur to switch it to a 48 pitch gear set. Doing so will allow you to bolt on their recent low tooth count spur (I think it's 72T or 74T). This should allow you to use a larger pinion.

I did this to mine since I have a full set of pinions in 48 pitch and can get AE Slipper Pads a lot easier. You can still use the Tamiya slipper pad in an AE spur, just have to trim the corners off of Tamiya's slipper pads to use them.
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Old 03-13-2009, 01:53 AM
  #456  
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Originally Posted by YR4Dude View Post
Since the internal ratio is so low.(2.94)
The internal ratio is 3.06:1 (more exactly 3.055555556:1). To get 2.94:1 you didn't take into account the mainshaft gear and counter gear are not 1:1.

Tamiya have pinions from 32T to 20T and 4 spurs, 85T, 82T, 78T, 75T. I honestly don't see the need to make an eccentric spur (what usually happens when you ream the centre out) from another brand to get the centre hole to 5mm. The right gearing is there for a 13.5T (whatever Kv that may be) from bolt on options.

Cheers, Mark

PS... How many posts before I can link a picture? This would be easy to show with the DF03 gearing chart.
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Old 03-13-2009, 08:14 AM
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Some interesting info there. I am a fan of the 0.5 pitch that Tamiya uses (comparing the diameter of the same tooth counts between the 48 pitch and it gives you an idea why Tamiya chose this odd ball pitch). However, I have very limited access to the 0.5 pitch pinions, could've bought a pack of it overseas, but I wanted to stick with the 48 pitch stuff since I already had a set...

As for the reaming out the center, it's not too bad considering that the hole after the molding from the manufacturer isn't always "true." You should've seen my AE/Kimbrough I had in my FT B4, it was pretty bad. I think it would take a tool like a non-tapered reamer to make it true...

I'm not sure how many posts before images can be posted. I would have to guess 10? 15?

Keep posting away with some useful information and I suppose you will eventually be able to put some pictures. I think the intent was to prevent non-rc related porn and other spammers (or bots perhaps).

You are correct with the internal ratio. The way I derived it was from the gearing chart that was in the MS manual. Simply taking their final drive dividing it by the quantity of (Spur/pinion) would spit out the "3.06"

But this isn't the first time I've seen some of you guys post the 2.94 ratio. Where did this information come from? Perhaps some Tamiya tech knows something that we don't, since the "3.06" figure depends on the accuracy of the final drive ratio that is in print inside the table. If THAT is in error, then the "3.06" would be in error.

In any case, a 0.12 difference won't really show up unless you are jumping by a factor of 8 after you divide the pinion into the spur tooth count, which is a significant change of tooth count of either or both.
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Old 03-13-2009, 08:55 AM
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I came up with the 3.06:1 (3.055555556:1) by counting the number of teeth on each gear of the gearbox, putting them all in an Excel spreadsheet and let Excel do the math. The figures that I got from Excel are the same as the ones I have from Tamiya.

I went a little crazy with the spreadsheet. It covers every gear ratio combo, every common battery type, the 3 used wheel sizes (buggy, rally, road) and the 4 Mamba motors... 3.15mb as an image file.

I'd let the images speak for themselves, but I can't even post a link to them.

0.12 does make a difference when you are thinking 30,000rpm+, probably not so much of a difference with a 13.5t (however many Kv that is).

Last edited by K10wN; 03-13-2009 at 09:13 AM.
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Old 03-13-2009, 09:04 AM
  #459  
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Originally Posted by tom_chang79 View Post
comparing the diameter of the same tooth counts between the 48 pitch and it gives you an idea why Tamiya chose this odd ball pitch.
I think they used 0.5mm module instead of the usual 0.6mm module for buggys because 0.4mm is a bit too small for offroad and is easy to strip, and 0.6mm is so damn noisy. Tamiya and Japan are metric after all.

Just making a pointless post to see if the limit to post images is 10 posts. LOL
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Old 03-13-2009, 09:07 AM
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DF-03 Gear ratio chart:



Full Mamba/DF-03 gearing guide.... 3.15mb

(Limit is 10)
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Old 03-13-2009, 09:26 AM
  #461  
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...And now I can post some pics of my DF-03 MS too


Nice stance!


It does too :P


Electrics layout


Interior I'm working on

Woohoo!!
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Old 03-13-2009, 04:20 PM
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Okay, I just check the recommended gearing for a 13.5 from Novak. Apparantly, coming from TCs, I'm thinking I need a 4.5FDR but thats for TCs. For buggy the FDR is 7. Totally doable with bolt ons.

Now the big question, can anybody give me the part number for the 75t spur? I think the gear parts bag comes with a 78t so I would like to go as tall as I can if it is available.

Thanks.
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Old 03-13-2009, 04:34 PM
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#51369 DF-03RA Spur Gear Set (78T, 75T, rear ball diff gear)
#51370 DF03RA 0.5mm Pinion Gear 32T
#53923 DF03RA 0.5mm Pinion Gear (27T,29T)

Should cover all the 7:1 ratios with those 3.
.
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Old 03-13-2009, 05:54 PM
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Originally Posted by K10wN View Post
#51369 DF-03RA Spur Gear Set (78T, 75T, rear ball diff gear)
#51370 DF03RA 0.5mm Pinion Gear 32T
#53923 DF03RA 0.5mm Pinion Gear (27T,29T)

Should cover all the 7:1 ratios with those 3.
.
Thanks!
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Old 03-13-2009, 06:29 PM
  #465  
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Sup guys,

I'm using the Kawada 48P slipper clutch in mine, I'm running the 82 spur which still fits inside the cover and a 19t pinion, back on page five and six we all talk about that stuff. This gives the df a 4.316 gearing and a final (using 3.055) of 13.18. I think I can even go to an 18 or maybe even a 17t for getting the 13.5.

The Kawada uses little delrin pins in a standard spur for the slipper clutch, when I bought the "kit" it had the pins and a sleeve for the center to fit on the DF03's drive shaft, once you have those parts you can switch to any Kawada spur...

Paulie was running the TA slipper, which worked fine from him.

laters,
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