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#1 woodman

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Posted 24 May 2014 - 09:40 AM

I ordered three of these JK F1/Indy Cheetah 21 chassis, three JK G-Force 1/32 open wheel Indy bodies, and three of these PS-4000 Euro MK1 motors...

 

Has anyone built these before. I can't find any pics of them?


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#2 W. J. Dougherty

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Posted 24 May 2014 - 10:27 AM

Yes. The chassis is great.

 

FYI, next Saturday we are racing an Indy 500 race using a myriad of different low end motors. Just not that one. It's too slow for what we need. But it should work fine. However, these are 1/24 chassis. The 1/32 bodies will not work. You need to look for something else.


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#3 Pappy

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Posted 24 May 2014 - 10:32 AM

We run the 1/32 scale JK chassis and they are great. We also use the PS 4000 motors on my track but the 4001 would be a lot better for larger tracks.


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#4 woodman

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Posted 24 May 2014 - 12:58 PM

This is the Chassis I ordered....JK 1/32 F1.....to run on this track.....

http://slotblog.net/...way-raytown-mo/

JK25141.jpg


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#5 W. J. Dougherty

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Posted 24 May 2014 - 01:25 PM

The chassis you referenced in your first thread, the JK 251171, Cheetah 21 F1 chassis (pic below), is a 24th Indy car.  However, the picture in your 2d thread, the JK 25141 1/32d F1/Indy Chassis for Hawk Motors, is a 1/32d inline car.  Sorry, but I would not have been confused if you knew what you were talking about...

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#6 munter

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Posted 24 May 2014 - 02:52 PM

Sorry, but I would not have been confused if you knew what you were talking about...

 

A lot of us don't know what we are talking about.


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#7 woodman

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Posted 06 June 2014 - 12:51 AM

Got most of the parts in today, so I can start...Had to grind a little on the chassis to widen the opening so the motor would set flush...This Pro slot must be wider than the Falcon type motor this frame was designed for.. 

And the wheel base is 3 3/4'' ....1/2'' longer than the 1/32 Cheetah 11....


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#8 Dennis David

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Posted 06 June 2014 - 08:17 AM

Not knowing what I was talking about has never stopped me from talking about something I know nothing about .

But I do like those chassis and look forward to seeing how these progress.

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#9 woodman

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Posted 15 June 2014 - 11:26 AM

One down 2 to go and man was this a fun car to run las night....The parts finally came in except the rear Pro-tracks.

tn_100_4596_zps15a31e92.jpg

3 3/4'' wheel base whith these JK 1/32 cheetah 11 chassis..

tn_100_4595_zpsd5902016.jpg

tn_100_4599_zps5fbfc8e2.jpg


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#10 woodman

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Posted 18 June 2014 - 10:46 AM

I wish I could put 48 pitch gears on these, the 64 pitch crown gears seem so delicate the teeth not being as deep as the 48 pitch.. The JK 30 T 64 pitch gear is 1/2'' dia and it would be nice to find a 48 pitch no larger than 5/8'' dia. Otherwise you have to grind on the frame to open up the space for clearance..

 

tn_100_4619_zps8fa295d2.jpg

 

Here is how they line up on a 3 1/2'' lane spacing....

tn_100_4614_zps2910331b.jpg

 

My track is 4'' lane spacing...

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#11 Bill from NH

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Posted 18 June 2014 - 08:24 PM

Steve, some have said those JK 64 pitch crowns will mate better with 72 pitch pinions, than with 64 pitch ones. Others have mentioned using a Dozuki saw file from Woodcraft to deepen the teeth. Slot-It & others sell a line of small dia. crown gears. Most of these fit 3/32 axles, but most are about 50 pitch too, so you would have to change pinions as well.


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#12 woodman

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Posted 18 June 2014 - 10:08 PM

I have 72 pitch pinions on the motors....though....

Bill, it's amazing how refined or complex 1/32 can get...When you step up from the 48 pitch crown gears,to 64 pitch you basically have nothing to choose from ...It is understandable the way that Slot-It and others have locked in the motor shaft to keep the gear mesh constant...With such fine teeth, you would think it is a no-brainer for anyone producing a finer tooth gear than  a 48 pitch would do the same! Endurance would be greater....When were 64 pitch crown gears ever produced in the past?

 

You know, if the teeth on the 48 pitch gears were longer" extending toward the axle , it would give a way to reduce the overall dia. of the gear...BUT NO!

 

Kind of like the recessed hub wheel they "JK" had to come up with for the 1/32 Cheetah 11 Anglewinder chassis......


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#13 woodman

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Posted 19 June 2014 - 10:11 AM

For a 27T to fit I could take off about 20 thousandths from each side of the frame opening..

tn_100_4632_zps41926c33.jpg

tn_100_4628_zpsb8c91e73.jpg


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#14 smithspeedway

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Posted 17 July 2015 - 09:31 AM

What is the overall width across the rear wheels?



#15 chasbeeman

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Posted 06 March 2017 - 11:31 AM

We're using these little jewels in two separate club's in the St Louis area. I'm the one responsible for bringing in the class and found that slot-it crowns and pinions worked excellent.

They are neither 48 or 64 pitch but rather somewhere in between. Metric 5.5 is their spec.

The pinions are $3.99 for two and the crowns are available with brass or aluminum gear boss for about $7

With the deeper teeth they allowed many hours of racing with little to no wear. ffe4be4db6aeb24590587f2c978e5456.jpg




1488783849880.jpg

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#16 garyvmachines

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Posted 06 March 2017 - 06:05 PM

I have run one of these crown & pinion combo's for two seasons with no problems....... !!

 

GAV 


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#17 Bill from NH

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Posted 06 March 2017 - 06:43 PM

Slow car? :laugh2:  :laugh2:


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