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New Mossetti Retro Can-Am kit


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#51 Bryan Warmack

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Posted 08 December 2017 - 11:07 AM

After a sleepless night and a lot of hand wringing,  :laugh2:  the SCRRA has decided it will simply change our bracket rule to read, "at least three sides" similar to the IRRA® wording, instead of just "three-sided," making the bracket legal.   :)


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#52 JimF

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Posted 08 December 2017 - 12:02 PM

Beautifully executed and an interesting design with a lot of room for creativity. Nice job!


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Jim Fowler

#53 Tom Eatherly

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Posted 08 December 2017 - 01:17 PM

Jim, sent you a PM.


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#54 JimF

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Posted 08 December 2017 - 01:55 PM

Ya did not neither... :crazy:
Jim Fowler

#55 JimF

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Posted 09 December 2017 - 12:43 AM

Possibly I have missed something in the last few years. I cannot tell for sure if the upright of the rear half rail is free in the vertical tube soldered to the bracket. However, the pan support rail at front right behind the front tire is clearly not soldered and thus is this not a hinge? Of course the rail in the middle of the chassis runs the same direction as the regular pan hinges.

 

So.....does this chassis have hinges running in one direction? two? or three?

 

post-4063-0-91963500-1512701631.jpg


Jim Fowler

#56 bbr

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Posted 09 December 2017 - 01:22 AM

Eddie .The assembled car in the above pictures weighs 60,5 grams - Bearings and Fronts installed


Need some 0.015 pans so the rtr weight is about 90 grams!
Mike Low
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#57 Tim Neja

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Posted 09 December 2017 - 01:23 AM

I know the very front tube is a travel limiter for the pans.  The other's I"m not sure about


She's real fine, my 409!!!

#58 Tim Wood

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Posted 09 December 2017 - 08:27 AM

Very nice chassis, for a rookie like me I might be able to build this.



#59 JimF

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Posted 09 December 2017 - 11:09 AM

I know the very front tube is a travel limiter for the pans.  The other's I"m not sure about

 

Absolutely, that is what it does. However, it seems that this bit fits the description of a hinge. Might be time to redefine the hinge rules or something.


Jim Fowler

#60 John Streisguth

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Posted 09 December 2017 - 01:02 PM

It doesn't seem like it can function as a hinge, considering there are two hinges along the main rail that would prevent it from doing so.  If there was anything else in place of the tube, would it function any differently?  To me, that's the test.  Just like the single center wire...not considered a hinge since it's not free to rotate.  The two wires-in-tubes attached are hinges, but since they are not on center, it meets the rules.

 

The manufacturer addressed the ones at the motor bracket, said they were soldered. Makes sense, the vertical wire would probably droop otherwise.


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"Whatever..."

#61 A. J. Hoyt

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Posted 09 December 2017 - 06:11 PM

The square tube in the front is a fore-aft-up-down stop for the outside edge of the bat pan. Lateral control is the inner "tight" (relative term here, not semantics) deliberate hinge.

 

Bud Bartos has been doing a similar thing for years and it's a very well functioning, robust (crash damage resistant), very clever and worth "borrowing" in the purely lateral manner done here.

 

Since it would get exactly the same function with a larger (and larger and larger) size square brass tube (simply creating more fore-aft & up movement) prevents this from being defined using any modern or classic definition of a (revolution only) hinge. It is a good "tuning" aid but could hardly be called a hinge (unless we want to debate the "tight" "loose" argument to define a hinge - that's been done to death here on other threads, I think.

 

I also like the main rail stiffener in the vertical tube (on the rear motor bracket - it appears to be soldered (steel rail to inside square brass tube) and it would need to be to be legal - vertical hinge).

 

I also like the installation in the sliding round brass tube alongside the main-rail. This, too, could be a tuning device if one tried using a varied fore-aft placement of the brass tube along the main rail, a full length brass tube or even soldering the steel wire in the brass or letting it rotate inside the brass tube (which makes it a classic hinge but it goes the same direction as the bat pan hinges so it's OK!) These are immediate feedback kinds of tests to do on an open testing day!

 

Finally, I have to say it, I really like the design of the rear motor bracket; always been legal in my self-serving interpretation of the IRRA rules. The shorter (than standard bracket) uprights make for a shorter main rail wetted soldering length but that is more than compensated by the "tunable" brace mentioned in the previous paragraph.

 

If these come in "bevel" (non-hypoid) mesh with ball bearing (not axle tube) upright holes, I wish to buy some (and the bottom plate) to try out your axle-to-motor flange length of this design. If so, I know where I will be going to get MY rear brackets going forward!

 

Mr. Mossetti, this is a very nice design and chassis kit. Dang, now everyone is going to be really fast!

 

(But first you need to) Keep it in the slot,

 

AJ


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#62 mrslotcar.ca

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Posted 11 December 2017 - 02:29 PM

Hi everyone,

 

Here are the specs for the motor bracket.

 

Material is .040" half-hard brass - weight is 5 grams.

Overall width is 1.280".

Centerline of axle hole to bottom edge is .355" (.710" jig wheel).

Bearing hole is .187".

Motor/axle offset - From .000" (centered) to .052" (below centerline)

Distance from front face (motor) to axle centerline is .535".

 

mossetti racing retro bracket.jpg


Ernie Mossetti


#63 Eddie Fleming

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Posted 11 December 2017 - 03:34 PM

Just to be sure I understand. Are the motor screw and bearing holes oblong so the motor can be mounted even with the axle and/or up to .050" below the axle?


Eddie Fleming

#64 mrslotcar.ca

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Posted 11 December 2017 - 03:38 PM

Yes, they are.


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Ernie Mossetti


#65 mrslotcar.ca

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Posted 11 December 2017 - 09:39 PM

Hi all.

 

Not sure what happened but I thought I'd posted this info earlier.


Ernie Mossetti


#66 Eddie Fleming

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Posted 12 December 2017 - 07:59 AM

I thought I had seen your pricing posted earlier as well.

 

So if I am mounting motors in the up position I will need to trim the bottom of the bracket to create the angle to get the front of the motor down to the bottom of the chassis? 


Eddie Fleming

#67 Cheater

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Posted 12 December 2017 - 08:03 AM

Sorry, Ernie, but when you start posting pricing and info on where to buy a product, what was info moves over to being an ad and here at Slotblog, advertising is restricted to two specfic subforums, The Parts Counter and Racer Swap Shop, both of which are paid forums.

 

That's why the price and availability info was deleted.


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Gregory Wells

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#68 mrslotcar.ca

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Posted 12 December 2017 - 10:01 AM

I didn't know - now I do. Thanks.

Ernie Mossetti


#69 Cheater

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Posted 12 December 2017 - 10:12 AM

No problem, Ernie.

This policy is a holdover from the early days of Usenet, where it was considered cardinal sin to advertise or market anywhere but in places where that was permitted. And I think it works better for vendors and manufacturers when viewers know where to look for things they might want to buy, rather than having info and pricing scattered all over the blog.


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Gregory Wells

Never forget that first place goes to the racer with the MOST laps, not the racer with the FASTEST lap






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