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Old 02-22-2009, 04:48 PM   #31
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Im thinking of pulling the trigger on a Tamiya TB Evo V MS. To give this a shot. It will be used in a brushless 17.5 class. Am I crazy?
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Old 02-22-2009, 04:50 PM   #32
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not at all man, Im gonna do the same thing this summer so i can compete in TCS races. Evo 5 MS will be my top choice as well, there only $399 NIB.
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Old 02-22-2009, 04:55 PM   #33
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Originally Posted by B18C Turbo View Post
not at all man, Im gonna do the same thing this summer so i can compete in TCS races. Evo 5 MS will be my top choice as well, there only $399 NIB.
Where are you finding it for that price?
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Old 02-22-2009, 09:54 PM   #34
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Any of the HK retailers have it for around $400 shipped. The least expensive I've seen it in the states was at ultimate hobbies for ~$490 and at Tower Hobbies over the holidays when you got $100 off the listed with the super saver club. Why don't you get the Evo IV special like the rest of the Dayton crowd?
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Old 02-22-2009, 11:33 PM   #35
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Originally Posted by or8ital View Post
Im thinking of pulling the trigger on a Tamiya TB Evo V MS. To give this a shot. It will be used in a brushless 17.5 class. Am I crazy?
Let me know how it goes, I've been tempted for a while now. Will this be your first Tamiya?
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Old 02-23-2009, 12:51 AM   #36
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Geektime here,

Moment of inertia = k x M x r squared
where
M is the mass (Brushless = 22g and brushed = 45g)
R is the radius of the object from the center of mass (Brushless = 12mm and brushed = 23mm)
k is a dimensionless constant called the inertia constant that varies with the object in consideration. (k= 0.5 for a solid cylinder)

So Moment of inertia brushless = 1584 g.mm squared
Moment of inertia brushed = 11903 g.mm squared (7.5 times greater!)

Basically torque steer with a brushless is about 1/8th as much as brushed motors!

Time to dust off my Pro4 i think. If you have a good shaft drive car don't sell it!
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Old 02-23-2009, 01:04 AM   #37
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Also the balance issue with Lipo is a real advantage with shaftdrive. With Lipo's at about 250g v nimh at 460g means a big advantage as the motor sits much closer to the centerline. so most of the lead you add to get to legal weight will be in the middle of the chassis under the shaft rather than on the outside of your lipo like most people seem to do with there beltdrive cars. this should mean lower polar moment or a more reactive car.
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Old 02-23-2009, 01:20 AM   #38
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I played with a brushless setup in a evo 5 a while back... It didn't seem to suffer torque steer even in mod but it lacked a lot of grip compared to any belt drive so good rubber was a necessity.
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Old 02-23-2009, 05:36 AM   #39
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Pablo good points. Maybe shaft can come back!! I have to see if I can find a Yok LCG cheap!
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Old 02-23-2009, 07:36 AM   #40
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Quote:
Originally Posted by syndr0me View Post
Let me know how it goes, I've been tempted for a while now. Will this be your first Tamiya?
I had a super hopped up TA05 for a while. I will certainly let everyone know how it goes.
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Old 02-23-2009, 08:13 AM   #41
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Originally Posted by swimbikerun View Post
Why don't you get the Evo IV special like the rest of the Dayton crowd?
That's not how I roll
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Old 02-23-2009, 08:29 AM   #42
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Originally Posted by or8ital View Post
That's not how I roll
Can I be first in line when you decide to sell it?
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Old 02-23-2009, 08:31 AM   #43
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Can I be first in line when you decide to sell it?
Absolutely! . I hope the experiment works out though.
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Old 02-23-2009, 08:50 AM   #44
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After speaking with Josh, he made a good point about torque steer in shaft drive cars: just tweak the car to compensate the torque steer. Or, off-set the shafts, like the 8th scale buggies.

It actually made perfect sense.
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Old 02-23-2009, 08:53 AM   #45
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Anyone have a link for an in stock Evo V MS for $400?
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