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Mugen Sport-Seven?

Old 12-30-2009, 01:22 AM
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Default Mugen Sport-Seven?

Has any-one had or heard of a Mugen Sport-seven. It is a 4 wheel drive nitro powered truck I picked up at a sale that I am attempting to put together. I need some advice and or info on the engine installation.
Old 12-30-2009, 01:45 AM
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Default RE: Mugen Sport-Seven?

I'm searching for you but I can't find a single thing on it. Are you sure that's what it is? I mean, and please don't be offended, is that what the manual or box or truck itself says? Is it 1/10 or 1/8th?
Old 12-30-2009, 02:15 AM
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Default RE: Mugen Sport-Seven?

Yea,that's what the box says. It is a 1/8 scale 4wd gas powered buggy. The diagram on the box macthes the truck and the kit # is 0502.29800. If I can find my camera I am going to post a pic. Give me a minute and I will try to locate it.
Old 12-30-2009, 03:06 AM
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Default RE: Mugen Sport-Seven?

Found my camera so I will try to post these pics. The problem I am having is spaceing the engine to the spur gear while keeping the bump start lined up. I am attempting to use a Team Orion Wasp 28.
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Old 12-30-2009, 03:32 AM
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Default RE: Mugen Sport-Seven?

Is there any way to adjust the motor mounts or are they solid? Try to take a few pics of the motor lined up and show the problem and maybe we/you can find a way to "rig" it to fit right.
Old 12-30-2009, 04:11 AM
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Default RE: Mugen Sport-Seven?

I think I know what my problem is. Don't think I am stupid but do they make different lengths on the crank-shafts on car engines? The Wasp engine I have appears to be shorter than the piture on the box.The base of the block is well behind the carb giving me a problem with both the flywheel hitting the carb and the shaft being too short. Am I making any sense?
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Old 12-30-2009, 04:22 AM
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Default RE: Mugen Sport-Seven?

You're not stupid and I wouldn't think that. You're asking questions, which is good. Yes there are different crank lengths with motors. Some have a longer one and some shorter. That's your problem as you found out. See this link: http://radiocontrol.wikia.com/wiki/E...ankshaft_types

Is that motor new? It looks like a nice motor but useless if you can't use it. PM me the details and I'll see if I can help you out.
Old 12-30-2009, 11:30 AM
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Default RE: Mugen Sport-Seven?

it looks like you can slide the motor farther forward
Old 12-30-2009, 01:12 PM
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Default RE: Mugen Sport-Seven?

the engine looks like it has a cut crankshaft.....please take pic of the engine shaft......... you may be able to reverse the center diff, then the gears would line up
Old 12-30-2009, 01:20 PM
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Default RE: Mugen Sport-Seven?

ORIGINAL: hpidriver94

it looks like you can slide the motor farther forward
yeah it does. try loosening the screws on the engine mounts that stick into the blue engine block, slide the whole engine forwards, and see where that takes you. and sorry if I'm just crazy right now and I'm not noticing it, but where's the flywheel?

Old 12-30-2009, 01:26 PM
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Default RE: Mugen Sport-Seven?

Slide the engine forward. Where it sits now even if it had a flywheel it wouldn't line up with the flywheel slot for a bump box. Put a flywheel on and line up the cb and spur gear and I bet it would fit. If not get a taller clutch bell.
Old 12-30-2009, 09:05 PM
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Default RE: Mugen Sport-Seven?

I haven't bolted the engine down at all. The carb is hitting the triangle brace at the top. I have turned the carb every way I can and it still won't fit. I took the flywheel off to show the mount a little better. If I line up the bump start hole and the gears there is no room for the carb. I took the carb off and set the engine somewhat lined up so you can see what I mean. The only thing I can think of is if there is a type of engine with a longer nose and crank. Any guesses?
Old 12-30-2009, 09:08 PM
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Default RE: Mugen Sport-Seven?

I forgot and clicked on quick reply where you can't upload pics. Here are some shot without the carb. You can see the brace post in the way of the carb.
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Old 12-30-2009, 10:19 PM
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Default RE: Mugen Sport-Seven?

I don't know anything about this car but is the spur gear installed correctly? Looks to me like if you turn the spur gear around, it may all come together...
Old 12-30-2009, 11:32 PM
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Default RE: Mugen Sport-Seven?

I can't turn that around but how about a clutch bell that is extended beyond the tip of the crank. I have a schumaker that has a three speed. It has three gears on the clucth. If I could find one that is extended like that with only the one gear ring I think it would all line up.
Old 12-30-2009, 11:37 PM
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Default RE: Mugen Sport-Seven?

That might work rather than getting another motor but I'm unsure. I guess start looking for clutch bells
Old 12-31-2009, 03:30 AM
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Default RE: Mugen Sport-Seven?

I think a quick pm to this gent.... i8tweety

He's one bad putty tat.......but may have an answer or two for you.

Good luck with your ride, looks classic nice.
Old 12-31-2009, 12:56 PM
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Default RE: Mugen Sport-Seven?

The buggy was designed around an engine with a threaded crankshaft. The wasp engine has a pilot shaft crank.

This is an example of a threaded crankshaft:


This is an example of a pilot shaft crankshaft:
[IMAGE]http://www.osengines.com/parts/images/23602010.jpg[/img]

The buggy kit should have come with a clutch nut / pilot shaft like this:


Did the kit come with a flywheel? When installed, does it cover all the threads on the crankshaft? Please provide a photo of the engine with flywheel.

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