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Please show your JK X25R chassis builds


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#1 DOCinCocoa

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Posted 17 January 2017 - 07:52 PM

I bought a new JK X25R chassis kit and I gotta beat Tony (don't tell him). So please show me your X25R chassis builds. I have the center section completed. I am mostly interested in the side pan attachment. For example, how much play should I have in the rear of the pan? Should I use an 062 wire here? What about the front pan attachment/pivot. How is that done?

 


Doc Dougherty
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#2 old & gray

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Posted 17 January 2017 - 08:02 PM

If I were building a car I don't think I could go far wrong copying this:

http://slotblog.net/...ro-winning-car/


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#3 DOCinCocoa

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Posted 17 January 2017 - 08:17 PM

Thank you for the response. However, I need a photo of the top side of the chassis. My center section is already done. 4 rails of .047" wire, each side. Its fairly stuff.

002.JPG

 

 


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Doc Dougherty
GRRR 2016 GT Coupe and Stock Car Champion and Overall Champion
My Series Spring 2016 4" NASCAR, JK LMP State Champion, and Endurance State Champion
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#4 old & gray

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Posted 17 January 2017 - 08:42 PM

Here it is.

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  • JK X 25 R Grandi GTC fall brawl top.jpg

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#5 Pablo

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Posted 17 January 2017 - 08:44 PM

http://slotblog.net/...-retro-chassis/


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#6 Josh Crutchfield

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Posted 17 January 2017 - 08:55 PM

These should help. The rear stop is made using 2mm square tubing. If you don't have this I would use .078 to help limit the movement.
IMG_0151.JPG
IMG_0152.JPG
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#7 Cap Henry

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Posted 17 January 2017 - 09:06 PM

That's the pan set up I always use on X25R

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#8 DOCinCocoa

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Posted 17 January 2017 - 09:13 PM

Pablo, that is a very nice build.

 

Cap, The front hinge, is that 062 wire? And what is the function of the rectangular cross section tube that goes over the wire?


Doc Dougherty
GRRR 2016 GT Coupe and Stock Car Champion and Overall Champion
My Series Spring 2016 4" NASCAR, JK LMP State Champion, and Endurance State Champion
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#9 Josh Crutchfield

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Posted 17 January 2017 - 09:22 PM

Yes. The front wire is .062. The rectangle tubing is used to hold the outer pan up.

#10 DOCinCocoa

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Posted 17 January 2017 - 09:23 PM

Josh, thank you very much.


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Doc Dougherty
GRRR 2016 GT Coupe and Stock Car Champion and Overall Champion
My Series Spring 2016 4" NASCAR, JK LMP State Champion, and Endurance State Champion
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1968 Cleveland Car Model Series race winner - Tom Thumb Raceway, North Royalton, Ohio
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#11 Josh Crutchfield

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Posted 17 January 2017 - 09:45 PM

No problem. I would brace the front ears if you plan on leaving them long. Also brace the rear L pieces..



#12 DOCinCocoa

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Posted 17 January 2017 - 09:50 PM

I was going to cut off half of the front wings (I am not sure about how much I want to eave on or just cut them off completely). And I will brace the rear L pieces with 047 wire.


Doc Dougherty
GRRR 2016 GT Coupe and Stock Car Champion and Overall Champion
My Series Spring 2016 4" NASCAR, JK LMP State Champion, and Endurance State Champion
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1968 Cleveland Car Model Series race winner - Tom Thumb Raceway, North Royalton, Ohio
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#13 Dominator

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Posted 17 January 2017 - 11:07 PM

Here is one I just did for a customer. .078 for the rear pan, .062 wire for the front with a piece of .025 wire on top of that to reduce up and down movementhe,and. 025 limiter to keep the pans from drooping. I tried this last week and it worked really well. I used a similar set up on a DS6 too.

20170103_200958.jpg

20170103_201011.jpg
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#14 Dominator

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Posted 18 January 2017 - 10:23 PM

I realized this morning I uploaded the wrong photo. Here is the correct photo with the pan limiter.

20170118_222113.jpg
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#15 SlowBeas

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Posted 19 January 2017 - 01:02 PM

Thanks for the correction. I was killing my eyes trying to spot your .025 front pan limiter!  :D


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#16 DOCinCocoa

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Posted 22 January 2017 - 03:05 PM

I finally finished off this chassis. The car ready to race weighs in at 113.7 grams. Good weight for GTC but on the heavy side for Can-Am.

JK X25R build pic1 1-20-2017.JPG

JK X25R build pic2 1-20-2017.JPG

JK X25R build pic3 1-20-2017.JPG

 


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Doc Dougherty
GRRR 2016 GT Coupe and Stock Car Champion and Overall Champion
My Series Spring 2016 4" NASCAR, JK LMP State Champion, and Endurance State Champion
My Series 2015 4" NASCAR, GTP and Endurance State Champion
​GRRR 2015 4 1/2" and F1 Champion
​GRRR 2013 & 2014 Evil Flexi Champion
1968 Cleveland Car Model Series race winner - Tom Thumb Raceway, North Royalton, Ohio
​1968 Hinsdale ARCO Amateur runner-up
1967 Parma Raceway Indy 500 Champion

#17 JerseyJohn

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Posted 22 January 2017 - 06:37 PM

I finally finished off this chassis. The car ready to race weighs in at 113.7 grams. Good weight for GTC but on the heavy side for Can-Am.

attachicon.gifJK X25R build pic1 1-20-2017.JPG

attachicon.gifJK X25R build pic2 1-20-2017.JPG

attachicon.gifJK X25R build pic3 1-20-2017.JPG

 

Doc nice work. I use the Dragon 7.5 which is nice because they have removable pan knock outs

 

d7 5r.jpg


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#18 DOCinCocoa

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Posted 22 January 2017 - 08:02 PM

Very nice build, John. I have built 2 RGEO kits. I have been thinking that I should take another look at these kits.


Doc Dougherty
GRRR 2016 GT Coupe and Stock Car Champion and Overall Champion
My Series Spring 2016 4" NASCAR, JK LMP State Champion, and Endurance State Champion
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1968 Cleveland Car Model Series race winner - Tom Thumb Raceway, North Royalton, Ohio
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#19 Cap Henry

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Posted 22 January 2017 - 10:25 PM

Here's mine, 53 grams bare before assembly 1a414f971f5e8c08538d76d02b2e6eca.jpg

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#20 James Grandi

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Posted 31 January 2017 - 10:38 AM

Late to the party, I apologize, haven't been on here much lately. I built the first chassis referenced in the beginning of this post, which is basically a copy of how Cap and Eric Gehrken built their X25R frames.

Lately however, the most consistently fast version of X25 I have built/raced/raced against has been this style. Basically, I just cut the rear plate apart, much like Cap's car just above this, only I used the .062/.055 rail style and I left a little more meat in the rear of the car. End result is about a 104-105 gram car ready to race, that is about the most stable version I've built so far. The only drawback is having to add the 5-6 grams to make Coupe weight, but it makes for a great can-am car

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#21 Half Fast

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Posted 31 January 2017 - 10:44 AM

The Amazin' Grandi is the King of the X25R chassis builders!

 

Cheers


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#22 James Grandi

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Posted 31 January 2017 - 10:50 AM

The Amazin' Grandi is the King of the X25R chassis builders!
 
Cheers


Thanks Bill, but I give the credit first to GVP, Cap, Eric etc. I just took what they did and added a couple of ideas of my own to the mix
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#23 Wizard16

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Posted 24 February 2017 - 10:50 AM

Copycat build for GTC at the R4. 58 gr as it sits. I have a Samson new build, a Tony P with 1 race to also test so I should get a good feel whether it is any good.

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  • .039 rail top.JPG
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#24 MSwiss

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Posted 24 February 2017 - 11:02 AM

Nice job on the build, Diana.

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