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Old 09-09-2003, 12:16 AM   #3706
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Quote:
Originally posted by Randman
Just finished my Surikarn up Havent run the transmission at all, and I just got a 16 second count out of it Can't wait to see how free it gets after it's broken in!
Is that 16 count with the acer bearings?
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Old 09-09-2003, 12:55 AM   #3707
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Randman,
I see you own a Barracuda.
Do these gears fit a Evo3?
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Old 09-09-2003, 01:54 AM   #3708
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I had both the TC3 and the SD gears here for trying and both donīt make really sense. I donīt remember if the EVO3 ring gears have 39 or 40 teeth but the TC3 and the SD gears both have one tooth more. So you have to change the diff gear also.. Also the shape of the gears is different the TC3 gears even more than the SD gears. In the end the transmission wouldnīt run very good.
Another thing is the mounting plate on the EVO3 oneway. Itīs a little bit too large in diameter so the SD gear wonīt fit without machining. Maybe this different with the surikarn oneways but the SD doesnīt fit at my eVO3 oneway.

So I think the only solution would be using a complete Yok SD oneway and rear diff. I donīt think this is very cheap. Also you still have to use the EVO3 little pinion gears as the one from the SD wonīt fit.
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Old 09-09-2003, 02:04 AM   #3709
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This clearly eliminates 2 options.

Anyone tried the Barracuda gears yet, to fit in?

Any other Japanese tuning-part manufacturer allready made an optional gear yet??
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Old 09-09-2003, 02:14 AM   #3710
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Product D made some aluminium oneway gears for the EVO3 some time ago. But it was a limited production and I got a message the gears are sold out. Not very cheap also.
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Old 09-09-2003, 03:16 AM   #3711
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There are some prototype ring gears been tested by Marc R in Germany at the moment but the gear is not the problem, the prop shaft is as its a one piece item the gear mesh alters when you crash/clip the boards alowing the gears to come far enough out of line for then to strip. We will have to wait for the Evo 4 for this problem to be corrected fully. Rick
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Old 09-09-2003, 04:16 AM   #3712
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Rick,

That's probably why Steen Graversen (at the Euro's) allmost integrated the hole drivetrain from the Yok SD!

Pizza
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Old 09-09-2003, 04:16 AM   #3713
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Quote:
Originally posted by V12
I had both the TC3 and the SD gears here for trying and both donīt make really sense. I donīt remember if the EVO3 ring gears have 39 or 40 teeth but the TC3 and the SD gears both have one tooth more. So you have to change the diff gear also.. Also the shape of the gears is different the TC3 gears even more than the SD gears. In the end the transmission wouldnīt run very good.
Another thing is the mounting plate on the EVO3 oneway. Itīs a little bit too large in diameter so the SD gear wonīt fit without machining. Maybe this different with the surikarn oneways but the SD doesnīt fit at my eVO3 oneway.

So I think the only solution would be using a complete Yok SD oneway and rear diff. I donīt think this is very cheap. Also you still have to use the EVO3 little pinion gears as the one from the SD wonīt fit.
So jfc_tech is just dreaming all this???
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Old 09-09-2003, 04:31 AM   #3714
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I donīt know how jfc_tech managed using the SD oneway gear with the Tamiya oneway but at least at my oneway it isnīt a direct fit. Maybe there are some newer versions with a smaller mounting plate but I doubt it. I think he had to machine the oneway or the ring gear.
Maybe a complete SD oneway will work without any modifications but you still have the problem with different number of teeth with the SD gear so there is a underdrive at the front.
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Old 09-09-2003, 04:42 AM   #3715
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Quote:
Originally posted by PizzaDude
Rick,

That's probably why Steen Graversen (at the Euro's) allmost integrated the hole drivetrain from the Yok SD!

Pizza
Yes Steen Graversenīs drivetrain is the best you could think of. When I saw it at the Euros I wished I could buy it from him. But no chance.

From what I have heard his father was working with real racing cars in the past so he knowīs what heīs doing!

As a sidenote from what I have heard at the SD the oneway gear also breaks from time to time as the driveshaft is a little bit too long so it canīt shift enough in a heavy crash.
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Old 09-09-2003, 04:55 AM   #3716
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Is there something on the market that is good on reducing additional friction on the EVO plastic drivetrain... it already is pretty efficient just going after every little bit

Coop
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Old 09-09-2003, 05:10 AM   #3717
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using the Square aluminium gearboxes frees up the drivetrain a lot as there is a perfect fit for the bearings.
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Old 09-09-2003, 05:23 AM   #3718
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Quote:
Originally posted by V12
using the Square aluminium gearboxes frees up the drivetrain a lot as there is a perfect fit for the bearings.

V12,

Thanks for the info. Do you just get the front and rear gearboxes or are there additional parts needed.

Are there certain coatings or ways to break in gears like a wax or oil that dries, not attacting dirt, for making the gears have less friction?

Coop
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Old 09-09-2003, 05:51 AM   #3719
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coop,

Go to a bicycle store and buy White Lightning (dry wax).


That should work.

Last edited by PizzaDude; 09-09-2003 at 06:21 AM.
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Old 09-09-2003, 05:58 AM   #3720
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Iīm just using the Square gearboxes but I think itīs working real good only if you are using them front and rear. Downside are the costs and weight. I think one aluminium gearbox is about 14 gramms heavier. This is about 0.5 oz as I know.

Iīm not using anything on the gears but there also is White Lightning. Again from the bicycle store.
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