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Old 02-08-2005, 08:17 PM   #2026
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What I got from Todd was that fitting the larger cells involves a simple modification to the battery plate
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Old 02-08-2005, 08:51 PM   #2027
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Quote:
Originally posted by RPage
What I got from Todd was that fitting the larger cells involves a simple modification to the battery plate
here are the battery sizes compaired with the 3700 and the 3300.

GP 3700SC SC
NIMH
1.68 x 0.89 x 0.89 inch
2.31oz


GP3300SCHR GP 3300SC SC
NIMH
1.69 x 0.88 x 0.88 inch
2.2oz

Not enough difference to have to modify. Im sure.
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Old 02-08-2005, 09:04 PM   #2028
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Default Congrats

Congrats to Bobby Flack. He had the 4th fastest lap time today at the snowbirds in pro mod class. He fell into second spot in pracitce for average laptimes


1 Mike Dumas 9:22:11 02-08-2005 9.626 9.53
2 Bobby Flack 9:10:30 02-08-2005 9.708 9.65
3 4683182 9:10:42 02-08-2005 9.72 9.63
4 Ralph Burch 9:16:23 02-08-2005 9.728 9.58
5 3789819 9:16:28 02-08-2005 9.752 9.66
6 Andrew Gray 9:10:37 02-08-2005 9.756 9.67
7 Jilles Groskamp 9:22:01 02-08-2005 9.772 9.66
8 Teemu Lieno 9:22:18 02-08-2005 9.796 9.73
9 Juho Levanen 9:10:31 02-08-2005 9.8 9.76
10 5784101 9:05:00 02-08-2005 9.82 9.59
11 2876117 9:16:28 02-08-2005 9.836 9.77
12 3580169 9:16:28 02-08-2005 9.852 9.76
13 Joel Myrberg 8:59:26 02-08-2005 9.882 9.76
14 3363870 9:10:19 02-08-2005 9.884 9.74
15 Ben Bustaman 9:16:19 02-08-2005 9.918 9.89
16 4637087 9:01:43 02-08-2005 9.93 9.86
17 Mark Adams 9:04:49 02-08-2005 9.936 9.9
18 5271336 9:04:55 02-08-2005 9.938 9.86
19 Martin Hudy 8:59:38 02-08-2005 9.944 9.92
20 Todd Hodge 9:04:45 02-08-2005 9.984 9.8
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Old 02-09-2005, 08:35 AM   #2029
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Way to go Bobby! Keep it goin'!

So now we sort of have short stack packs with the 3700's, albiet taller?
I would have figured that a dremel tool is all you need for the mod. Possibly to have the slots for the batteries sanded at more of an angle so you can keep the weight lower? Technically I bet you could modify one battery tray and have another for the 3300's specifically. The cell cutout on the chassis will be the only other mod, and any slop should be cancelled out by what tray you use so you won't have batteries sliding around.
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Old 02-09-2005, 08:46 AM   #2030
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It is only 1 100th of an inch. I don't plan on worring about 1 100th of an inch. and that is in diameter. They may not need any modifing. But we will see i guess. The cells have not been ROAR approved yet as far as i know.
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Last edited by Gearhead3; 02-09-2005 at 09:15 AM.
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Old 02-09-2005, 09:08 AM   #2031
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Correct me if I'm wrong Gearhead doesn't go tenths hundreths thousandths? So that would be 1 100th not 1 1000th?
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Old 02-09-2005, 09:14 AM   #2032
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yeah too many zeros....LOL thanks
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Old 02-09-2005, 09:19 AM   #2033
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Well we know the ROAR approval is just a formality. They no longer have any guts when it comes to slowing down all this battery development. Battery comes out...battery becomes legal! Period...

As for the battery adjustment. I remember when I owned the first Schumacher Mission. Things were tight with the 3000 cells back then. Some people suggested removing the extra layer of shrink wrap that some had added. Many argued that the small amount of diameter that the shrink wrap added couldn't possibly account for the difference between a perfect fit and a too tight fit.

Well some of us tried removing the extra layer and 'bam' the packs dropped right in without any further work.

So, while the size difference looks small on paper, when you put 6 of those side by side as a pack and possibly with an extra layer of shrink wrap, it can add up in a hurry. Add to that, the fact that these cars are designed with such tight tolerances (a place for everything...everything in its place) and you have a reciepe for misfitting.

Not saying thats the case here with the IB3600 and GP3700 cells and the JRX-S. Just mentioning that it IS possible to have things thrown off by seemingly small measurements.
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Old 02-09-2005, 09:20 AM   #2034
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No problem. Working with auto engines can put you in the thousanths frame of mind. I've had to catch myself a few times too.
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Old 02-09-2005, 09:56 AM   #2035
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Yes that it would wcoyote.

I have thought about that too darkseid. If you add up all the 1 100ths of an inch, it will most likly throw things off. But for the JRXS, we don't really know, only speculate, useing previous knowlage. It will all depend on how the battery wholes are cut in the battery door.
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Old 02-09-2005, 12:40 PM   #2036
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you guys shrink wrap you cells? haven't done that for the past 4-5 years.
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Old 02-09-2005, 12:55 PM   #2037
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Quote:
Originally posted by EricF
you guys shrink wrap you cells? haven't done that for the past 4-5 years.
LOL If you buy new Batts. once a year like I do and run them all year long in On-
Road and Off-Road then I have to shrink them or they would look like a pile of TC4 parts!!! LMAO

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Old 02-09-2005, 03:36 PM   #2038
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I usually don't shrink wrap my cells, but when you constantly see guys with 3 year old wrapped packs that look brand new, while your 1 year old unwrapped pack looks like you've been dragging it behind your car all year it makes you think twice about adding the shrink wrap.
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Old 02-09-2005, 03:58 PM   #2039
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Default Re: Congrats

Quote:
Originally posted by Gearhead3
Congrats to Bobby Flack. He had the 4th fastest lap time today at the snowbirds in pro mod class. He fell into second spot in pracitce for average laptimes


1 Mike Dumas 9:22:11 02-08-2005 9.626 9.53
2 Bobby Flack 9:10:30 02-08-2005 9.708 9.65
3 4683182 9:10:42 02-08-2005 9.72 9.63
4 Ralph Burch 9:16:23 02-08-2005 9.728 9.58
5 3789819 9:16:28 02-08-2005 9.752 9.66
6 Andrew Gray 9:10:37 02-08-2005 9.756 9.67
7 Jilles Groskamp 9:22:01 02-08-2005 9.772 9.66
8 Teemu Lieno 9:22:18 02-08-2005 9.796 9.73
9 Juho Levanen 9:10:31 02-08-2005 9.8 9.76
10 5784101 9:05:00 02-08-2005 9.82 9.59
11 2876117 9:16:28 02-08-2005 9.836 9.77
12 3580169 9:16:28 02-08-2005 9.852 9.76
13 Joel Myrberg 8:59:26 02-08-2005 9.882 9.76
14 3363870 9:10:19 02-08-2005 9.884 9.74
15 Ben Bustaman 9:16:19 02-08-2005 9.918 9.89
16 4637087 9:01:43 02-08-2005 9.93 9.86
17 Mark Adams 9:04:49 02-08-2005 9.936 9.9
18 5271336 9:04:55 02-08-2005 9.938 9.86
19 Martin Hudy 8:59:38 02-08-2005 9.944 9.92
20 Todd Hodge 9:04:45 02-08-2005 9.984 9.8
Appears Bobby is crushing it in expert 19 turn as well. Lay it down Bobbo Flacko...........
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Old 02-09-2005, 06:50 PM   #2040
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Unless the battery plate/door design has changed in the last 2-3 weeks, the modification required to fit the new cells is a snip here and a snip there on the battery plate/door. Really simple, no dremel work needed
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