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Old 11-20-2004, 06:59 AM   #8776
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Default Re: Tweak

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For those of you who use a tweak station regularly, have you notice you have to always add pressure to the right front and left rear?
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Old 11-20-2004, 07:14 AM   #8777
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Anyone know of where I can get the 0 degreee pivoting blocks?
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Old 11-20-2004, 07:19 AM   #8778
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Most of the large mail order places carry HPI parts. Tower Hobbies, Stormer Hobbies, KT Hobbies are all places I've ordered from.
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Old 11-20-2004, 07:27 AM   #8779
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re: breakage at our track

I don't think you can take much form the amount of breakage at our track. Maybe the teams should come to Idaho for durability testing . I know of a Tc3 that never breaks there too.

From what I've seen of the other cars hitting yours and Gus's (when you're lapping them) the Pro 4 has no durability problem.
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Old 11-20-2004, 08:06 AM   #8780
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Quote:
Originally posted by Entropy
100 spur, someone mentioned.
I am using a 100 tooth spur. I read where someone is using 104 tooth spur.

I alos found that running the larger spur, and keeping the same gear ratio (larger pinion), the motor runs cooler.
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Old 11-20-2004, 08:19 AM   #8781
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I'm using a 100t Kimbrough spur, but it's right at the edge of the bottom of my 2.5mm chassis.
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Old 11-20-2004, 09:54 AM   #8782
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so i can say its safe to use a 100t spur gear with out any modding

does hpi make a 100t derlin one for the pro4

thnks for all ur replys
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Old 11-20-2004, 10:17 AM   #8783
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pro4racer - yes, HPI makes the white spur gear, 100T 64 pitch. I have used it on mine for quite sometime.
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Old 11-20-2004, 10:33 AM   #8784
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ernestf thnks for that

when u are using ur 100t spur are u using the standard stock chassis or did u have to mod it for the spur to fit in or is it a straight fit

thanks
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Old 11-20-2004, 10:46 AM   #8785
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I'm running a Kimbrough 100t spur with the 3mm chasis, but I do know it works with the stock 2.5mm chasis also.
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Old 11-20-2004, 10:47 AM   #8786
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<---102 RW spur
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Old 11-20-2004, 10:48 AM   #8787
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I'm running a 104 with the BMI 3 mm chassis. I had to bevel the edges of the spur opening in the chassis and topdeck to get it to fit. The biggest spur you can fit in the car will usually be the fastest, as it will let the motor run cooler (and thus more powerfully) with the same ratio.
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Old 11-20-2004, 10:57 AM   #8788
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Default Spur Clearance

Here's a quick reference chart. I'd give yourself about 0.3mm to 0.5mm clearance unless you have measured the exact thickness of your chassis and are running on a very smooth surface. The chart uses exact chassis thicknesses whereas actual chassis thickness will vary slightly.



-E
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File Type: pdf spur clearance.pdf (24.3 KB, 225 views)
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Old 11-20-2004, 01:22 PM   #8789
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hi erik i take it that the numbers in red are not to be used as these will exceed the thickness of the chassis

is that right.

thanks
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Old 11-20-2004, 01:24 PM   #8790
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Does 1 rear hub exist for the PRO4 (#)
What is the sizi for the rear hub bearings?

Thanks
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