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Changed my mind not going to put a .21 in

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Changed my mind not going to put a .21 in

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Old 09-30-2007, 07:54 PM
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nitrohead5300
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Default Changed my mind not going to put a .21 in

Hey Ferrarimk13 I have changed my mind about one of my winter project I am not going to put a .21 engine in my R-40. The .21 just weight too much the increased weight would have a very negative effect on the R-40 handling. I like the way this car handles too much to make it a purpose built landspeed attemp vehicle only. A OS.12TZ Spec2 weights 208 grams, OS .18TZ ( non -pullstart) weights 222grams just 14 grams more but the OS Max.21 VZ-R weights a whopping 315 grams!! Thats 107 grams more that is too much for my purposes.
Old 10-01-2007, 11:37 AM
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Default RE: Changed my mind not going to put a .21 in

good, i didnt believe u would have gotten too many great results with a .21, and im glad you're sticking with the 18TZ. That extra weight would really unsettle the chassis, and it sounds like your setup is pretty good for the purposes
Old 10-01-2007, 12:47 PM
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GYNAIKAS
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Default RE: Changed my mind not going to put a .21 in

I would like to add that much of the .21 engine's weight is at the head something that would destroy your low center of gravity.
Old 10-01-2007, 05:17 PM
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Default RE: Changed my mind not going to put a .21 in

Just too heavy, really surprised that a .21 would weight that much more than a .18 yikes!!! I will just keep the fusions for landspeed attemps vehicles
Old 10-01-2007, 07:43 PM
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Default RE: Changed my mind not going to put a .21 in

haha, sounds good, what if you replaced the .21's head with a lighter one? it wold be awesome to have a carbon fiber head, lmao.
Old 10-01-2007, 08:11 PM
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Default RE: Changed my mind not going to put a .21 in

Good idea except the material would need to be something else besides carbon it does not disscipate heat that well.
Old 10-01-2007, 08:38 PM
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Default RE: Changed my mind not going to put a .21 in

yeah, i know, maybe titanium, lol, although those magnesium heads looks very nice.
Old 10-01-2007, 09:05 PM
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Default RE: Changed my mind not going to put a .21 in

Maybe aligning the engine horizonally instead of vertically...LOL I think that the.18tz is WAY better than the .21 fon an R40 when on track.
Old 10-03-2007, 11:58 AM
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Default RE: Changed my mind not going to put a .21 in

lol, like the serpent F180, that would work right? and have super low cg
Old 10-03-2007, 12:02 PM
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Default RE: Changed my mind not going to put a .21 in

I remember some very old OS engines with "flat" shape...They never really became a hit!
Old 10-03-2007, 06:07 PM
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Default RE: Changed my mind not going to put a .21 in

yeah, this guy had that sirio i was talking about, which head was kinda smeared, but had a very low center of gravity.
Old 10-03-2007, 06:51 PM
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Default RE: Changed my mind not going to put a .21 in

Yes...but I wonder why they've stop developing such engines...
Old 10-03-2007, 06:58 PM
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Default RE: Changed my mind not going to put a .21 in

didnt sell, but why>?
Old 10-03-2007, 07:07 PM
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Default RE: Changed my mind not going to put a .21 in

Who knows...maybe their alignment caused loss of power...maybe they were not compatible with most of the cars out there...

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