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Old 03-15-2005, 02:24 PM   #16
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The Evo 4 will not fit the Evo 3 as the Evo3 design is a one piece where as the Evo 4 uses a three piece with a floating center shaft. The 3 piece is slightly hearver, but helps prevent driveline damage during hard crashes. I think Tamiya makes a carbon 1-piece shaft for the evo 3.
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Old 03-15-2005, 03:04 PM   #17
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any plans for the yok SD?

I have the Pro4 CF shaft...at $55.00 it's expensive but have not have any problems with it yet. not in the US yet...
but if you're able to sell them for around $30.00 you'll definately get plenty of buyers as long as they are strong and durable as the HPI CF shaft.
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Old 03-15-2005, 03:24 PM   #18
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Can you post a picture? If thier simmilar to Team Bomber for $30 I'll take one.
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Old 03-15-2005, 03:59 PM   #19
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I could make one for the yok for $30, but since yokomo sells one cheaper, I haven't made one yet. If you want to give it a try, I could custom make one for that price. Just PM or email if you want to give it a try. It will be stiffer than the Yok version that is for sure.


I attached a picture of the associated shaft. The HPI version is similar, just with purple tips (matches the car).


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File Type: jpg tc3 shaft5.jpg (60.1 KB, 1066 views)
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Old 03-15-2005, 04:03 PM   #20
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Erik

Very nice...
I'll check with my Bro if wants the SD one.
the Yok one is terrible.. I had long while ago..the end pieces came loose.

one question. are the ends bonded or pinned to the shaft.

The Pro4 w/purple ends...sounds tempting...
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Old 03-15-2005, 04:29 PM   #21
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if my eyes aren't fooling me then the tc3/4 one is $15....how much would one be shipped to the UK?

have you ever considered doing other CF parts for cars?
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Old 03-15-2005, 04:42 PM   #22
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The ends are bonded. It took me a few tries to find the correct adhesive, but they seem very strong. Using a metal based epoxy and plenty of curing time seemed to be the trick. I thought about pinning them, but it most likely this would weaken the shaft and cause it to crack during any impacts. I believe the Yok and older Tamiya designs used nothing but CA. It sticks well to the carbon, but not as well with the aluminum tip. Also, without roughing the aluminum tip ID, the bond will be weak. Since the Yok design glued to a smooth surface, the bond was a little weak. It also could have been contamination that weakened the bond. I have taken steps to increase adhesive surface area while still maintaining a true fit to the shaft.

Also, I would advise against using the carbon shafts with low turned modified motors until further testing is done. These powerful motors shouldn't need a few grams less rotating mass to be wicked fast. Better batteries or new motor brushes would have a bigger impact with those motors.

The list price on the package is $34.99, but I am selling them direct for $30. Figured if hobby shops picked them up, they could list at a discount to encourage buyers. I could ship to England, but shipping would double to $6-7.
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Old 03-15-2005, 08:20 PM   #23
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WOW!!!im getting more interested would the tc3/tc4 shaft fit the ntc3???btw,nice shaft!!!
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Old 03-18-2005, 06:26 AM   #24
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I was able to clear some things up with the moderator and unfreeze the post.

The NTC3 shaft is slightly shorter and thus the TC3/TC4 shafts will not fit. Also, I don't think a carbon shaft is necessary for Nitro cars. The high powered motor should be able to overcome a few extra grams of rotating mass and will probably break a carbon shaft anyway. THat said, I could custom make one if someone was interested. Just let me know the length from tip-to-tip.

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Old 03-18-2005, 06:31 AM   #25
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Arrow Shaft

I am interested in a shaft for the pro 4 how much will it cost????????????????????????????
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Old 03-18-2005, 06:56 AM   #26
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Hi
Can you make one for the BARACUDA R2..
I do have one make by Speedpal and they are 5 oz pretty light...
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Old 03-18-2005, 07:11 AM   #27
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I am sure one could be made for the baracuda, but it sounds like you already have one that works. Also, due to the relative rarity of that car, I would probably stay clear unless someone wants a custom part.

But, if you are interested, PM me with more details and we can see what can be done.

I think you mean 5 grams versus 5 oz. The heaviest drive shaft I have seen for any car is about 20g (0.75oz) for the Tamiya Evo 1-3 series.
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Old 03-18-2005, 07:44 AM   #28
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Do you have a better close up pic of the shaft? I would like to see if it really looks like CF....
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Old 03-18-2005, 08:19 AM   #29
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yeah it doesn't look woven like what we see on chassis'....
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Old 03-18-2005, 09:01 AM   #30
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The shafts are 100% cabon fiber, however, are not woven. It is very similar to the shafts used on pan car axles, only hollow. This provides a much straighter, truer shaft than something that is woven. Also, the cross sections are more uniform so there are no weak spots. They are extremely rigid and light weight.

The first shafts should be arriving at their new owners in the next few days, so I hope to get other "tested" feedback shortly.

Erik
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