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Slot.it sidewinder gearing options


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#1 lucky77

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Posted 30 March 2015 - 06:29 PM

Hi All,

 

I have a Slot.it Can-Am Laguna Seca 1971 (CA26c). I'd like to replace the stock gearing with a 13 tooth pinion and a 30 tooth spur gear. My understanding is, that, I have to maintain a 24.5 mm total (between the armature and axle) using both gears? 

 

I currently have a NSR 17.5mm 30t Spur gear and a Slot.It 6.5 mm 13t pinion. Obviously this won't work because I'm .5mm shy of 24.5. The problem is I can't find a 7mm 13t pinion --- or, in the opposite direction, a 17mm 30t spur gear (so that I could use one of the available 7.5mm 13t pinions).

 

Any suggestions??

 

Thanks in advance for any help.

CJK


Chuck Kron




#2 Pappy

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Posted 30 March 2015 - 08:34 PM

Chuck,

 

I believe NSR makes a 6.5mm pinion and an 18mm spur gear, which would solve your problem. 

 

But what ever you do don't mix NSR gears with Slot IT gears. We did that in the Michigan 24 hour endurance race a week ago and it didn't work out, we had to change gears. The teeth are cut differently.


Jim "Danger" Dunaway aka Butch
 
Danger is my middle name, that's why I race slot cars.

 

Anything is possible IF you don't know what you are talking about.
 
"In the beginning of a change, the PATRIOT is a scarce man, and brave and hated
and scorned. When his cause succeeds, the timid join him, for then it cost
nothing to be a PATRIOT." - Mark Twain, 1904

 

 


#3 lucky77

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Posted 30 March 2015 - 09:19 PM

Hi Jim/Butch,

 

Thanks so much for your reply! I have heard the same thing (and believe it to be true - especially coming from a guy with as much experience as yourself). Why do you think Professor Motor recommends mixing NSR & Slot.It? Here's a link where they make the suggestion: http://www.professor...egory-s/898.htm

 

Thanks again!,

Chuck


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#4 Pappy

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Posted 31 March 2015 - 06:24 AM

Chuck,

 

Don' know why they would recommend it unless they just don't have any experience using them. The gear mesh felt good but didn't hold up for the 24 hour race. 

 

One of my teammates was turn marshaling in a turn where he had to sit on the floor. He put his hand under the track when the car that was leading the race passed by and he said he couldn't feel a thing. But when our car went by he said the track vibrated. After we made the gear change and used NSR gears on the motor and the axle (the car was an NSR Mosler) he said there was no vibration anymore, plus the car hooked up and got much better traction. I know we'll never mix gears again.


Jim "Danger" Dunaway aka Butch
 
Danger is my middle name, that's why I race slot cars.

 

Anything is possible IF you don't know what you are talking about.
 
"In the beginning of a change, the PATRIOT is a scarce man, and brave and hated
and scorned. When his cause succeeds, the timid join him, for then it cost
nothing to be a PATRIOT." - Mark Twain, 1904

 

 


#5 lucky77

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Posted 31 March 2015 - 06:01 PM

Thanks, Jim - I very much appreciate your experience and advice!

 

Chuck


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#6 racie35

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Posted 01 April 2015 - 09:34 AM

First one to sell a slot with an adjustable motor pod is gonna be swamped...1/32. It's dopey you cannot adjust where the motor sits
Bruce Thomas

#7 Ramcatlarry

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Posted 01 April 2015 - 09:52 AM

I know Slot-it uses 6.5 OD pinions as wel as 18 & 19 mm OD  spurs.  The tooth form changes a little to change the fit into the same size.  When more teeth fit the same OD, the teeth get thinner.

 

I have a similar problem putting metal gears into a monogram sidewinder - the axle to drive shaft is farther apart than the slot-it....but does the 7.5 OD slotting plus have a tooth form that will fit the slot-it spurs?


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

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60+ year pin Racing rail/slot cars in America


#8 mikeinclover

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Posted 29 May 2015 - 11:13 AM

We use the NSR 7.5 pinions in our Monogram Stock cars all the time it is the only way to install metal gears in that car. The space is to large for Slot it gears.

Mike Stott
Clover Leaf Racing
7746 Clyde Road
Fenton, MI 48430 USA
(313) 473-SLOT
 
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