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Post by pceng on Jan 9, 2015 14:41:24 GMT -7
WHOA, I expected a lot more out of that last car. Let's see how this one goes, I'll guess 21.95 mph. Me to , a lot more. Dave , better park that one next to that old t-jet. Maybe some will wear off , on it......... lol. |
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Post by dave632 on Jan 9, 2015 15:56:49 GMT -7
I think the problem was not so much with the last car but the one before
which was faster than it should be.
That Mustang will be one of my super stock style entries in future races.
Peter I agree with the wheels being to small on the Viper chassis. It was
the o ring tire they have with their front end assembl and I switched to a larger one in the front and
got a much better pick up pattern. In the rear, once again I agree and have put larger
tires on the back to stop the magnet drag. The ones in the photo are the replacements.
The dragging happened on the first few runs with smaller rear tires. It actually
looked like there was enough clearance when I looked at the chassis when first run
but I imagine when it goes down the track the chassis flexes some, (it is only a
medium stiff chassis), and that is when the dragging occurs.
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Post by pceng on Jan 9, 2015 17:33:01 GMT -7
Dave, did you check just fronts before rear change ? Leading edge of magnets wearing would indicate front needs lifting. If rear of magnets were marked it would be tail that needs lift.
I've heard many prefer cars low enough to drag mags. I just can't see it for drag racing. Never liked it for road race either.
....... Peter
Sorry , forgot the flex thing......... since you said it was a 6 ohm, I doubt you went crazy with the magnets. It would take some pretty strong mags to flex a medium chassis enough to drag.
How much flex a chassis has seems to be only an indication of comparison between cars made by THAT given company. Dawned on me while putting DeCosmo back together. Their light colored low flex chassis , is more rigid than any stiff or extra stiff chassis that I have. Regardless of make. It is the only inline that I have to use a tool to pry chassis.
Never gave this much though before. And I know there are two schools of thought on this for dragging. Seems to me flex has to be speading lower portion of bulkheads in turn messing with bushings or bearings. And freedom of arm shaft as a result.
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Post by Deleted on Jan 9, 2015 17:45:01 GMT -7
some of the roundy round folks I know like to break their magnet cars in on tires lower than they intend on racing. they want that groove in the chassis and the magnets from the rail. then when they race, the rail is just barely beneath the groove and gets maximum attraction and helps keep the car lined up perfectly in the "race groove".
just a fined tuned super magnet car intended to rarely if ever deslot.
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Post by dave632 on Jan 9, 2015 20:04:54 GMT -7
I don't remember which I changed first, may have been both at the same time, but the problems
went away. I did put level 10 polys in the motor and for traction on the Viper so there is some
good mag force there.
Good ET with that .55 so the magnets help there.
I cannot see dragging magnets as a performance enhancer as far as drag racing goes. For roundy round
it may be different.
Cars picked up ET and MPH after curing problem but not as much as you would think, maybe 1/2 a hundredth
and .5 - 1mph.
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Post by dave632 on Jan 10, 2015 6:58:52 GMT -7
WHOA, I expected a lot more out of that last car. Let's see how this one goes, I'll guess 21.95 mph. Me to , a lot more. Dave , better park that one next to that old t-jet. Maybe some will wear off , on it......... lol. I never thought of that. Wonder if it will slow down the faster car??? |
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Post by Deleted on Jan 11, 2015 0:01:48 GMT -7
18.97
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Post by pceng on Jan 11, 2015 0:14:03 GMT -7
Al , that sounds like the temperature today. ...... Peter |
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Post by dave632 on Jan 11, 2015 10:07:15 GMT -7
No that was the year I was born.
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Post by dave632 on Jan 11, 2015 17:52:43 GMT -7
Tommorow the MPH will be posted for the Viper chassis.
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Post by dave632 on Jan 12, 2015 8:23:30 GMT -7
 21.58 MPH. Best guess, TGM2054 with 21.95 missing by only .37 mph. Point totals: 1/12/15 TGM2054 - 46 Pceng - 44 Mike11422 - 26 Alpink - 18 Eagle - 7 Last guess car coming soon. |
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Post by dave632 on Jan 12, 2015 8:41:45 GMT -7
Next car for the game - 55 Chevy Nomad, BSRT chassis, level 10 motor and traction magnets, 2.7-3.0 balanced arm, .200x.450 rear tires, 8/20 gearing. ET .4557 for 15' 7.5" at 20v.   |
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Post by pceng on Jan 12, 2015 9:25:16 GMT -7
Nomad looks familiar......... but the white roof ?
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Post by dave632 on Jan 12, 2015 14:04:25 GMT -7
That is one of the cars that will run in the Outlaw race.
Two tone cars were the rage back in the 50s and 60s. I bought
that car painted like that.
Personally I liked the two tone cars. All of todays cars
have dull and uninteresting paint in most cases, but then
they are mostly dull and uninteresting cars too.
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Post by TGM2054 on Jan 12, 2015 19:09:55 GMT -7
Ok, one last time. I'll go 23.15 mph.
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