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Offset gear mesh how much? Help!?


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#26 Ramcatlarry

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Posted 10 May 2018 - 07:32 AM

I have always tried to match the motor/axle angle for the gear angles with a combination of pinion and spur angles. The C-can angle is about 16-20 deg and the smaller cobalt motors end around the 2-5 deg range.

 

What racing series allows a 26 ga armature in a C-can other than bracket drag racing? Any motor can be used as a play toy for the rush of it. Might be a new class: C-can group 7.


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Larry D. Kelley, MA
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#27 Slot-Racer

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Posted 10 May 2018 - 10:27 AM

This is not for any series or class.
Mario Damis

#28 Jason Holmes

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Posted 10 May 2018 - 12:55 PM

Larry.

It's for fun.
 
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#29 Zippity

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Posted 10 May 2018 - 03:44 PM

At a first glance of the photographs, it appears that the wrong-sized motor has been placed in the chassis, or that the wrong chassis is being used for the motor.  :(



#30 Slot-Racer

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Posted 10 May 2018 - 09:58 PM

I'm not following any rules, it fits, just need to find the right gear mesh angle. 9/39 is a perfect mesh but ratio wise it is low.


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#31 Jason Holmes

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Posted 10 May 2018 - 10:46 PM

If it's not a Box chassis it maybe a INT 15 chassis Motor Fits Play on Guys calm down help don't Hammer

 

jason


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#32 Ramcatlarry

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Posted 11 May 2018 - 09:52 AM

Use the pinion and spur that runs right, THEN put the motor into the frame.  The motor does not always line up perfectly.  I usually use a short bit of brass tubing to bridge the gap from motor to frame in the rear.


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Larry D. Kelley, MA
retired raceway owner... (for now)
race directing around Chicago-land

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Host 2006 ISRA/USA
Great Lakes Slot Car Club member
60+ year pin Racing rail/slot cars in America


#33 Slot-Racer

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Posted 15 May 2018 - 01:37 PM

I would use 8/38 or 39 5deg pinion 16deg spur 64P 

 

jason

 

Hi Jason, 

 

You were absolutely right! Thank you. That is the right gear ratio and a 16 deg. spur was right also, you have excellent eyes! I re-did it all and now it's obviously right. I did a 16 deg. pinion in 72 pitch and a 9 tooth 5 deg. and it's way way better with the ratio of 6.43 with 7.60's.

 

Gear 2.jpg  

 

Gear 1.jpg

 

Thank you all for your help!


Mario Damis

#34 Jason Holmes

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Posted 15 May 2018 - 09:51 PM

Mario

 

That looks Sweet Have Fun

 

jason



#35 Slot-Racer

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Posted 16 May 2018 - 10:14 AM

Thank you Jason!  :D  I'm still curious how much angle you can put to have minimal contact patch between the two and get away with it? I guess it's trial and error.  :o


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Mario Damis





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