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Old 05-09-2012, 10:05 AM   #3076
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Default New Tamiya Parts

Hey guys. Just to let everyone know. Tamiya is releasing a new chassis and upperdeck for the TRF417x. They are meant for high bite. The part #s will be loaded to the TamiyaUSA site in a few weeks with parts scheduled to arrive in July. Here is the info I recieved:

Items:
42232 RC TRF417X Lower Deck 2.5mm Thick
42233 RC TRF417X Upper Deck 2.5mm Thick

Happy Racing
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Old 05-14-2012, 04:46 AM   #3077
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Is there a 48 dp spur that will fit directly onto 417 without having to cut the 2 lugs off.

Thanks Andrew
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Old 05-14-2012, 05:41 AM   #3078
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Originally Posted by turd ferguson View Post
Hey guys. Just to let everyone know. Tamiya is releasing a new chassis and upperdeck for the TRF417x. They are meant for high bite. The part #s will be loaded to the TamiyaUSA site in a few weeks with parts scheduled to arrive in July. Here is the info I recieved:

Items:
42232 RC TRF417X Lower Deck 2.5mm Thick
42233 RC TRF417X Upper Deck 2.5mm Thick

Happy Racing
Cool, The car is too flexible for high bite (especially the X, thats why at our club we still buy the 417 as its stiffer.

I'm tempted to get the Exotech hard chassis, but I might get the tamiya one now.
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Old 05-14-2012, 03:10 PM   #3079
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Is there a 48 dp spur that will fit directly onto 417 without having to cut the 2 lugs off.

Thanks Andrew

The serpent S411 one's fit.
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Old 05-14-2012, 06:20 PM   #3080
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Panaracer too
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Old 05-14-2012, 07:53 PM   #3081
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Cool Spur gears!

Quote:
Originally Posted by A_Smith View Post
Is there a 48 dp spur that will fit directly onto 417 without having to cut the 2 lugs off.

Thanks Andrew
You can easily drill through the delrin spurs . Use a body reemer to make a mark on center using the pully itself then drill away. If the hole is oversized a little it doesn't matter you still have two holes that center the spur. That's all you need! Easy! The only issue is some spur gears are thicker than the Tamiya ones and fitting the spacer can be a problem. But, that can be fixed also!

Just my 2$
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Old 05-14-2012, 09:55 PM   #3082
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I've seen some people complaining about various issues with the gear diff II unit... i.e. the gear diff shims failing. However, I haven't been able to track down exactly what issues racers are experiencing. What exactly are the issues and are there any solutions? I just bought a gear diff II unit and would like to avoid any issues if possible. Any help would be greatly appreciated.

cheers.
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Old 05-14-2012, 10:02 PM   #3083
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Originally Posted by Obsidian View Post
I've seen some people complaining about various issues with the gear diff II unit... i.e. the gear diff shims failing. However, I haven't been able to track down exactly what issues racers are experiencing. What exactly are the issues and are there any solutions? I just bought a gear diff II unit and would like to avoid any issues if possible. Any help would be greatly appreciated.

cheers.
Use search, it has been covered at length
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Old 05-15-2012, 12:45 AM   #3084
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Thanks alot.
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Old 05-15-2012, 03:27 AM   #3085
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The kit diff shims external diameter are too narrow and in my experience eventually cone in towards the cavity of the o-ring in the diff housing. This causes the diff to become notchy and tight.
You need to find shims with the same internal diameter, but a larger external diameter, as this will allow the shim to be more supported against the housing and not cone into the o-ring space.
Then it's just a matter is sanding the gears and/or shiming to get the smoothest feeling diff. Too tight or loose its notchy...

Hope this helps...
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Old 05-15-2012, 04:17 PM   #3086
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Thanks everyone for the info on the gear diff.

Q...where can I purchase the Roche steel outdrives for the gear diff II unit?

Thanx
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Old 05-16-2012, 02:40 AM   #3087
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Quote:
Originally Posted by 2-Bad View Post
The kit diff shims external diameter are too narrow and in my experience eventually cone in towards the cavity of the o-ring in the diff housing. This causes the diff to become notchy and tight.
You need to find shims with the same internal diameter, but a larger external diameter, as this will allow the shim to be more supported against the housing and not cone into the o-ring space.
Then it's just a matter is sanding the gears and/or shiming to get the smoothest feeling diff. Too tight or loose its notchy...

Hope this helps...
I read Wilcks blog where he said he uses 3x shims on the long and 2x shims on the short. I just built my diff last night using this method. Though i hear its commom but does this issue still occur using this setup?
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Old 05-16-2012, 03:59 AM   #3088
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IMO, it really doesn't matter how many shims you use as long as you get the diff feeling smooth (trial and error). Regarding the shim, I think from memory the standard shims are around 8mm externally. I would suggest getting some shims that are over 10mm external diameter (11mm, 12mm, 13mm better), as this allows the shim to be better supported agains the diff housing and not against the o-ring (like the standard ones do).
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Old 05-16-2012, 04:27 PM   #3089
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Originally Posted by svndayNZ View Post
I read Wilcks blog where he said he uses 3x shims on the long and 2x shims on the short. I just built my diff last night using this method. Though i hear its commom but does this issue still occur using this setup?
It depends how much power you put through it. Wilck's method is the same as what Kiyo told me at TITC, and in mod I still had coning after only a couple runs. My friend though runs 17.5 boost and so far his diff is fine.

On the O-ring front check out kyosho part # ORG05. They fit straight in and come in a pack of 10 and will stop the leaks.

I still find it a bit hard to believe that the team put up with a diff this shoddy. They only need to change the orings and the length of the pin to have the best diff on the market
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Old 05-16-2012, 04:36 PM   #3090
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Quote:
Originally Posted by svndayNZ View Post
I read Wilcks blog where he said he uses 3x shims on the long and 2x shims on the short. I just built my diff last night using this method. Though i hear its commom but does this issue still occur using this setup?
Try these
http://http://www.amainhobbies.com/product_info.php/cPath/1576_699/products_id/188800/n/ProTek-R-C-5x115x02mm-Differential-Gear-Washer-10
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