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Mercedes Benz SLR 300 Betta


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#1 Pablo

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Posted 19 August 2016 - 07:18 PM

Body is a Betta 1/24 Mercedes SLR 300 and motor will be a Havlicek "H. Mabuchi FT26D", 38/27.

 

Betta 1955 Mercedes 300 SLR.jpg

 

IMG_2940.JPG

 

More to follow...


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Paul Wolcott




#2 Don Weaver

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Posted 19 August 2016 - 07:48 PM

If you want to make it an anglewinder I made some mounting plates for EBD chassis'.  Yours for the asking.

 

Don


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#3 Vlado Yankov

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Posted 20 August 2016 - 02:46 AM

https://imageshack.us/i/pnYGD500j

 

7695c095745255218b5a0b73148698fd.jpg


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#4 Pablo

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Posted 20 August 2016 - 06:51 AM

Thanks Don. I'll be gathering parts here soon and I'll keep that in mind :friends:

 

:heart: the paint job on that one :good:


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#5 Pablo

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Posted 23 August 2016 - 02:24 PM

Anybody know where I can get .500 OD wire wheel inserts w/ knockoffs (Borrani - type) ?


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#6 dc-65x

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Posted 23 August 2016 - 06:23 PM

Hi Pablo,

I can let you have a set of these Russkit wire wheel inserts with a bit different style of knockoff:
 

Russkit wheels, tires, and wire wheel inserts:

Wilson890Screamer-102.jpgBig honkin' pipes:

Wilson890Screamer-103.jpg


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#7 Pablo

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Posted 23 August 2016 - 06:44 PM

Thanks Rick, let me think about that...those custom inserts may be overkill for this car...


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#8 Pablo

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Posted 27 August 2016 - 04:53 PM

WB 4", GL 7/8"
Chassis width: slightly tapered - front of pans 3 1/8" to rear of pans 3 1/4"
Wheel (track) widths: front 3", rear 3 1/8"

 

Front wheels: Russkit replica R721 with EJ's tires, 3/4" OD
Rear wheels: dc-65x "Fantasy" X wide with Alpha Wonder Rubber tires, 13/16" OD

Clearance: 1/16" front and rear

 

Motor: H Power 26D 38T/27, Mabuchi can, Champion endbell

Pinion: Sonic steel solder-on 48P 7T
Spur: 32T Cox
Axles: PCH 1/8"

Bushings: Champion in 7/32 tubes

Flag: Cox

Pins: Koford big heads
Spacers: Koford, Slick 7

 

Motor fully modified with 36D size brushes, broken in/tested, endbell screw holes tapped 2-56, etc.

Front and rear axle tubes all jigged up, motor precisely centered, and ready for solder

 

IMG_2961.JPG

 

Don Weaver custom motor bracket - all I can say is, "I'm not worthy" :)

 

IMG_2970.JPG


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#9 Bill from NH

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Posted 27 August 2016 - 07:15 PM

Is that motor plate a commercial piece or is it custom made by Don?


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#10 Pablo

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Posted 28 August 2016 - 08:32 AM

A Don Weaver custom made bracket. See post #2.


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#11 Bill from NH

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Posted 28 August 2016 - 03:01 PM

Thanks, that was an oversight on my part.


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#12 Pablo

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Posted 28 August 2016 - 03:10 PM

And yet another victim of the "View New Content" feature :sarcastic_hand:  :friends:

From now on, you must read every single post in my threads :laugh2:


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#13 Bill from NH

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Posted 28 August 2016 - 04:32 PM

I do read each & every post in a thread with the [View New Content] button. Only editing an existing post would escape it.  This is a case that post #2 didn't contain a photo, so I probably gave it less attention than I would have given a photo. Photos say a thousand words & internet photos last infinitely (as far as we can tell.).


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#14 Pablo

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Posted 29 August 2016 - 03:04 PM

The chassis will be based on the January 1969 Car Model magazine article, "How to build the latest Super Bat Pan plumber chassis" by Team Nutley Captain, Mike Tango.

Built by Tony P.  :D The original used a 16D motor, but I think I can make this 26D work fine.

 

dc-65x built a similar chassis configured for left hand EB drive in 2006. I'll be utilizing his work as a reference also (I'd be a fool not to :) ):

 

http://slotblog.net/...58-26d-pro-car/

 

Plus, I built one of these myself (with a 16D) in 2013. Luckily, it's still in my possession :dance3: 

http://slotblog.net/topic/40255-tony-p-1969-plumbers-nightmare-bat-pan-car/ 

 


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#15 Pablo

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Posted 31 August 2016 - 03:55 PM

Motor cage is complete:

 

IMG_2986.JPG


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#16 Pablo

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Posted 09 September 2016 - 12:57 PM

Wheel inserts: I tried really hard to find .500" OD Borrani wire wheel inserts of this type and they are simply not commercially available.

Today I ordered a set of Professor Motor inserts that may work:

 

http://www.professor...-p/pmtr5029.htm

 

Capt. Rick, if the above inserts don't work for me, I'll take you up on your kind offer in post # 6 :)

I never want to use rare parts unless they are absolutely a "must have" - this car doesn't absolutely "have to have" inserts by any means.

But wire spokes would look nice :)


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#17 Bill from NH

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Posted 09 September 2016 - 04:19 PM

Anyone  cloning the Russkit insets in resin?  The BWA inserts disappeared a couple years back, but is anyone else working in some back room?


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#18 dc-65x

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Posted 09 September 2016 - 06:28 PM

I don't think there is a problem using the Russkit inserts Pablo. I can give you a set that are not a mint collector's item. The chrome has faded on them and they'll need to be restored by painting.


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#19 beardogracing

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Posted 09 September 2016 - 07:04 PM

You can still get BWA inserts, go to: http://www.darthobbies.com/index.htm


Chris Wright

 

 


#20 Pablo

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Posted 10 September 2016 - 06:27 AM

Thanks for the link, Chris. :good: But I see the only sizes are .375, .450, and .540

 

Between Rick's and the Professor Motor's on the way, I should be all right.


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#21 Pablo

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Posted 10 September 2016 - 06:16 PM

Drop arm trimmed, trued, flattened, and flag hole tilt checked.

This one was obviously designed for a Cox, so I installed a pair of .032 brass rod stops

 

IMG_3080.JPG

 

Outer rails .063" wire; inner .063" rod, middle not shown yet but will also be .063" rod.

Similar to dc-65x's chassis in that respect.

 

IMG_3077.JPG

 

My rail setup may seem strange due to my 26D motor box being smaller than most.

But I thought it over and that's what I came up with  :)

 

IMG_3081.JPG


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#22 Don Weaver

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Posted 10 September 2016 - 08:07 PM

Works for me!  Like the guide flag stops - good idea.....

 

Don


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#23 Pablo

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Posted 11 September 2016 - 07:23 PM

Thanks Don :)

 

Front end is just like Tony's but the outer wire rail is further out to accommodate my 26D motor box:

 

IMG_3087.JPG

 

To harness the torque and mass of the 26D I took liberty to add an additional brace to Don's bracket:

 

IMG_3084.JPG

 

 

 


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#24 Pablo

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Posted 14 September 2016 - 05:45 PM

A short trip to the flat block every now and then to ensure flatness

 

IMG_3098.JPG


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#25 Pablo

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Posted 15 September 2016 - 08:14 PM

Drop arm stop is .032" vice .063" rod. Plumber rails pretty much the same way Tony did his, except for minor variations in wire sizes.

 

IMG_3099.JPG

 


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#26 Pablo

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Posted 17 September 2016 - 09:33 PM

Custom made .032 pans, tapered 3 1/8" front to 3 1/4" rear.

Tony's were thinner - .025, but his chassis was intended for a 16D motor.

Mine needs to tame a lot more torque, namely, a wild beast Havlicek 26D :D

I need all the down low weight I can shovel in there :aggressive:

 

IMG_3107.JPG

 

My Abel tool nibbled notches for the hinge tubes.

032" pan down-stops were mini-torched to the pans before assembly.

 

IMG_3111.JPG


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#27 Bill from NH

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Posted 17 September 2016 - 09:51 PM

Mis-typing on the nibbler. It's an Adel Tool Co. item.


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#28 Pablo

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Posted 17 September 2016 - 10:01 PM

Thanks, Bill. :good: My original and best mentor always has my back :)  and keeps me straight :victory:


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#29 Pablo

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Posted 23 September 2016 - 01:43 PM

Chassis is done. Tony, I tried not to stray too far from your design:

 

IMG_3122.JPG

 

IMG_3123.JPG

 

IMG_3128.JPG

 

IMG_3129.JPG

 

Don Weaver custom 26D motor bracket reporting for duty, Sir:

 

IMG_3139.JPG

 

 


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#30 Pablo

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Posted 26 September 2016 - 08:19 PM

IMG_3162.JPG

 

Lead wires are genuine Cox Superflex, thanks dc-65x :)

I finally found a way to remove the Bic lighter flame marks from heat shrink tubing - Mothers Metal Polish and a Q-Tip.

 

Good planning pays off; in this case the motor slipped right in like it had a brain.

Gear mesh, wheels to chassis relationship, etc. all perfect.

 

Drivetrain test was 100% satisfactory; I revved it higher than you want to know.

Never had an H motor fail, but I always test them hard to ensure it doesn't happen after it leaves here.

The gear mesh was silent and the motor was very happy and very cool.

 

I'm sorry if this sounds like bragging, but nothing leaves The Wolcott Ranch unless it passes my tests :victory:


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#31 Samiam

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Posted 26 September 2016 - 09:45 PM

Beautiful :good:

 

The motor looks like it was destined to live in that chassis when it was born 50 years ago.


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#32 Pablo

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Posted 29 September 2016 - 01:20 PM

Thanks, Sam :)  The body isn't painted yet, but the car is ready for a track test this Saturday:

 

IMG_3174.JPG

 

IMG_3188.JPG

 

Wheel inserts are Professor Motor Chaparral 2D press-fit with narrowed knock-offs glued to them:

 

IMG_3184.JPG

 

IMG_3186.JPG

 

 


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#33 havlicek

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Posted 02 October 2016 - 09:15 AM

Hi Pablo,

 

     A 26D anglewinder is a pretty rare beast, and it looks like you did a heckuva job making it look like the type should have been more usual than not.  Philippe actually posted pics of a 36D anglewinder once, but I don't remember seeing any 26D's done this way...at least recently for sure.  Pretty danged unique AND cool.  I only vaguely remember the actual motor (so many come and go, they all start to blur together) because of the "can shim" I fabbed for it, but basically a G20 wind in a 26D is definitely up there!...actually in ANY end bell drive Mabuchi!  No doubt, your build is easily at least as important as the actual motor when it comes down to how well it all holds together.

 

-john


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#34 olescratch

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Posted 02 October 2016 - 10:52 AM

Definitely an inspirational build!  BTW, love the name tag!


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#35 Pablo

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Posted 02 October 2016 - 11:08 AM

Thanks John H. and John S. :)  Track test results:

Excellent. As expected, the Tony P. inspired full plumber design handles great and the 26D "H" Power motor compliments it with smooth power.

Sometimes bigger motors work against you with the weight and torque - not this one. Runs stone cool, all the power you want, all the brakes you want -

and it's controllable.

 

Yes, I was driving it carefully to avoid ruining the Betta body, but I pushed it pretty hard towards the end.

Zero de-slots in about 50 laps. Drifts nice and predictable, a very powerful yet friendly car to drive.

Comes into the off camber deadman a little too hot, hit the brakes and she just plants the flag, drifts, and turns :good:

When a car does that I know it's right.

 

Now, where did I put those doggone SLR 300 body stickers that Vlado sent me ? :dance3:


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#36 bluecars

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Posted 02 October 2016 - 01:58 PM

To Cool!!! :D


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#37 Pablo

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Posted 06 October 2016 - 05:02 PM

Done :)

Immense Miniatures driver with dirty white helmet, secured underneath with earring keeper and bulletproofing

 

IMG_3200.JPG

 

Pin holes bulletproofed

 

IMG_3212.JPG

 

Stickers courtesy of Vlado Yankov  :dance3:

Driver's head, stickers, and body exterior coated with floor polish

 

IMG_3217.JPG

 

IMG_3219.JPG

 

IMG_3221.JPG

 
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