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Old 08-06-2008, 10:25 AM   #1
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Default Conversion: 1/10 electric to 1/8 electric?

Conversion: 1/10 electric to 1/8 electric?

Let's say we start with a B44 and make it the wheelbase and width of an RC8 (1/8 scale Nitro).

Here are the starting specs:
RC8: Weight 7.4 lbs / Wheelbase 11.7in / Width 12.0in
B44: Weight ~4 lbs / Wheelbase 11.5in / Width 9.8in

Step 1: add 2.2 inches to the width by adapting or making new A-arms that are 1.0in longer per side. Appropriate CVDs. By using 1/8 wheels, the additional 0.1in per side should be taken care of.

Step 2: Use different springs and oils for the stock shocks or use 1/8 scale shocks.

Step 3: add 0.2in to the wheelbase. There are several ways to do this. It could be accomplished by a combination of the following: New top and bottom chassis, new A-Arms, modified or new front bulkhead and rear chassis plate.

Potential Comparisons:
Weight
1/8 nitro converted to 1/8 electric: 7 to 8 lbs
1/10 electric converted to 1/8 electric: 4 to 5 lbs

Battery Pack
1/8 nitro converted to 1/8 electric: 4S or more / 14.8V+ LiPo or A123 is typical
1/10 electric converted to 1/8 electric: 2S or more / 7.2V+ LiPo, A123 or NiMH could all work

Speed Controller
1/8 nitro converted to 1/8 electric: ~$200 i.e. MMM, R1Pro/RX8, Novak HV
1/10 electric converted to 1/8 electric: Possibly Normal or slightly upgraded

Motor
1/8 nitro converted to 1/8 electric: Brushless 550 size or greater
1/10 electric converted to 1/8 electric: Brushless 540 or slightly upgraded

I think as 1/8 scale electrics begin to evolve to next generations, they will eventually begin to look more like todays 1/10 scale electrics, perhaps like slightly larger versions of the B44 or ZX-5.

Last edited by haulin79; 08-06-2008 at 12:16 PM.
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Old 08-06-2008, 11:08 AM   #2
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if the 1/8 electric class evolves into just a big 1/10 buggy it will kill the class. the 2 biggest reasons people love this class is the durability and reasonable costs that go with the durability.
yes they still cost a lot to get going but they will end up costing less than a typical 1/10 buggy because of less broken parts and maintence.
a 1/8 buggy that would be able to run on a 540 motor would have to be so light it would break even more that a 1/10 buggy does, and everyone that races 4wd buggy will tell you that they are too fragile.
also, take a typical 1/10 buggy and remove the wheelset and then throw a set of 1/8 wheels on the scale with it. it will already end up weighing close to5 lbs and you havent even supersized it yet.
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Old 08-06-2008, 11:49 AM   #3
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I hear ya.

Engineer's Iron Rule:

low cost
high strength
low weight

Choose 2
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Old 08-06-2008, 12:46 PM   #4
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This also work with

Quality
Service
Cost


808 is the lighest Buggy available, not the most expensive and still very strong (maybe the strongest i have seen at my local race track). So anything is possible
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Old 08-06-2008, 01:09 PM   #5
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There is a guy on radiocontrolzone who has done what you are thinking. Its more 1/8 scale oriented as far as the parts, etc. But it appears he uses the concept of a "b44" style 1/10 scale vehicle setup for his 1/8 scale conversions. So basically his vehicles (I think one is an MBX5) use the suspension components, but the dual deck chassis setup and graphite like a 1/10 scale 4wd buggy. I believe that is how they look, going from memory here.

Main thing is that the vehicles need to have the durability of a 1/8 scale nitro buggy. There is no point to making one if its less durable.

As for the power, I think at a minimum, you will need 3S if you go with a light buggy setup and a 550ish motor.


I think one thing I would like to see as the next step is chassis design on the current 1/8 scale electric concepts like the Caster racing buggy start to work on lowering CG by machining out locations on the chassis for the battery trays, motors, etc. Not fully exposed, but machined to lower there CG. Maybe they already have, can't tell from the pics.
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Old 08-08-2008, 11:50 PM   #6
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Old 08-09-2008, 11:22 AM   #7
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Quote:
Somebody already does does a 1/10 to 1/8 conversion. This one is for the RC10T4!!

http://www.jconcepts.net/store/index...s_id=228&zenid

They should do it for the B44 next.

Is JConcepts a good company? Do you think they are capable of designing a reputable product/conversion?

I wonder if their conversion breaks a lot.
JConcepts made the BJ4 which is an excellent buggy and the basis for the B44. They also make quality products such as bodies and tires.
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