1275 replies to this topic

[havlicek]

1) Ack...you guys are going to give Jairus a major headache with all the rules questions. Read and follow the rules as stated explicitly and don't look for ways to circumvent them because the obvious wasn't stated. There's nothing more at stake here than some good fun.

2)Yes, if anyone has some Mura A end bells (that fit a Mabuchi FT16D or modern "D" motor...OR...Mura B motor end bells, let Al know. TIA

-john

[Craig]

How exactly Craig? Please explain?

Generally speaking Jairus, rules at times can be left to interpretation and what i have experienced in the past exploited. Myself, I prefer to follow by the letter.

[MantaRay]

Great explanation Craig!

[Foamy]

1) Ack...you guys are going to give Jairus a major headache with all the rules questions. Read and follow the rules as stated explicitly and don't look for ways to circumvent them because the obvious wasn't stated. There's nothing more at stake here than some good fun.

2)Yes, if anyone has some Mura A end bells (that fit a Mabuchi FT16D or modern "D" motor...OR...Mura B motor end bells, let Al know. TIA

-john

cans with Tradeship endbells on evilBay...
http://www.ebay.com/...ts=220&_armrs=1

[TSR]

The Mura 16D-sized endbells ("A" as defined) are now difficult to find and rather expensive. Using a "B" endbell is not easy because it is too wide and too low, so requires machining work and shimming.
Tradeship endbells are the correct sizing and good enough and at a fraction of the cost of the genuine stuff. They also have hardware already on them, hardly ever the case for the loose Mura stuff. If someone has trouble finding one, please PM me and I know that the LASCM can spare a few at a reasonable cost.
I cannot give them away because they are not my property, but can talk Scott into a decent price.

[draggon]

That means Ray is getting an order! Whoot whoot!

[Jairus]

Okay, finished my car for testing late last night. Not my official entry yet as I plan to try a couple other chassis designs and this motor needs some miles on it to be sure it will go the distance.






While it'll be in my slot box when I go visit Glenn at the track today. I won't bring it out if there isn't time. Today is for the "Dynamic Challenge", plus I need a quiet hour to run a mess'o laps and really see what it will really do! Weighs in a 112g.
4" wb with a 7/8" guide lead.
.020 under the front axle when the tires touch, tho they are just a hairs width above the track surface. Track ill-regularities and dirt will probably have them spinning as the car runs.
.062 under the rear axle and the tires are SBR fresh cut with nothing but zip-grip for now.
No name yet but but leaning toward "ZOSO" since the song "Going to California" is on that album.
Using the same #42 I had in the Dynamic Challenge so that's officially taken for this race and will be added to the list.

[One27ray]

Awesome paint and chassis Bud the # 42 never had it so good

sun-noda

[The Bugman]

very cool ride mr. j. ,,,,,looks like a Speed version of your Dynamic Proxy racer(same body)

[Jencar17]

[MantaRay]

I am posting this Question/Picture for Brassrodman..............He wants to know if this cut away can is legal?
The buss bars would not be used.

[Foamy]

Ahhh, sweet! Gotz bodz today.

[havlicek]

Ray, we're allowed anything up to and including (time-wise) a Mura Green Can (2-hole C can). That's a newer can so it's not included.

-john

[MantaRay]

I was told it was modified...........

[Pablo]

You were told what was modified ??

[MantaRay]

Yes...as in cut away................no problem if it is not allowed.............that's why John was Checking............

[Jairus]

What was it before it was cut up is the question. Was it a 2-hole Mura Green Can or a Koford D-can as it now looks?

I have no problem with builders cutting up cans to vent or make lighter motors. But to start with something newer and "say" it was once a period correct can is something all together different.

[Jairus]

Well, I had a good day! After working all morning I loaded the slot box into the car and headed down to Albany to test my second Balls Out Choti racer.
Drove I-5 the twenty miles south and got there in a very short time but.... the northbound lane was totally blocked by a semi that had turned over and spilled its load of scrap metal. Not a pretty sight. Decided then and there that I needed to go the other way if I wanted to get home before dark.




At the track I checked on the Dynamic Challenge cars first and then set myself up for an hour of lap pounding.




After 58 minutes I was spent. Well, actually much of the time was taking up by adjusting the car and shagging it on two difficult corners. But all in all I managed to drive it for 161 laps in one hours time.
The track is 110' long and has quite a few sharp turns. It's more of a road course than a King track is but I feel good about the gear ratio and tire grip. The car is damn fast! No way I could pull the trigger all the way back unless the purpose was total suicide (sorry Layne).



After-track inspection shows the tires are wearing a lot on the outside, but not chipping. (SBR) I saw the car tipping a bit in the corners so at 112g it's way too light to go any faster with this motor and more grippy tires would just exacerbate the problem as the Choti body can only provide so much down force.
Took quite a few wall hits with no broken joints or body cracks and still sits perfectly flat on the test block.
Motor got pretty warm after testing. I think John might be right in that I will need a slightly milder wind to go faster with these magnets. Maybe a 26 single? I do have a Thorpe that's not doing much right now.... Also, going to poke some holes in the can and drill two holes in the end bell for more air flow. But lighter weight would not be helpful.
In fact, I am thinking of replacing those wire gussets with brass triangles just to add low tongue weight.


I am sharing this info for everyone's benefit. I am not the best driver, nor am I the best builder. But I believe that for this proxy to be successful for everyone involved, that we all share what we do so the race can be close and exciting for all.




The drive home was uneventful. Wagon ran great with the 8-track belting out "Sweet's" Desolation Boulevard and "Jefferson Airplane's" Surrealistic Pillow the whole way home.
Like I said, it was a GREAT DAY!


Respectfully submitted,

[Pablo]

Awwesome day, glad the Wagon ran good and you had productive testing . Thanks for sharing !!!

PS good job avoiding the wrecks

[Jairus]

Yeahhh, you know MY track record huh P?

[HarV Wallbanger III]

What about the Dynamic Cars?

[Jairus]

What about them Barn? This is the "Balls Out proxy" thread.

The Dynamic Challenge is now set for the 23rd and we are on track and on time. (Was hoping for the 16th but track owner wants the date to be Saturday the 23rd) I went through each car and tested more than half of them on the track. Nothing more that I can do but wait... or work and play.

[HarV Wallbanger III]

"At the track I checked on the Dynamic Challenge cars first and then set myself up for an hour of lap pounding.

I thought you were going to finish testing them before you ran your new car?

[Pablo]

I would like to know, Jairus, please, what pinion, and what airgap you were using in today's test ?
Thanks

[Jairus]

They were all bench tested Barney. I checked and adjusted flag clearance, checked brushes, made sure of correct rotation and tires on all 25 cars. Even found 4 that needed new axles and replaced them that got bent during prior races. I ran those I felt needed running including your car. NO ISSUES worth mentioning! I have given these entries more attention than most of the individual race directors did, with the possible exception of Steve in N. London. The cars are READY for the race, period! Do you want me to run your car again and report back? Are you asking for a lap time? Because I can do that next time I am there.

Pablo, the pinion is a 8t steel 48p and the crown a Cox 28t.
Not sure of the airgap. Really tight I can assure you, but I don't have any way of measuring that. I wish knew who made the magnets but can't tell you that even because they were given to me by David Siller in a Champion can with shim. They're of course ceramic and fit the Mura magnet shim. The arm is a RehCo 24s and I think that might be too much for this car. Switching to a 26s Thorpe before going back next week for more fun and games.