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Old 03-26-2006, 05:05 PM   #1
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Default Kyosho Optima Mid Motor

Hello All,

I just finished rebuilding my Kyosho Optima Mid and have been out of the hobby since I was a kid. Does anyone know what would be a good motor for this car? Can anyone point me to some good sites on new motors and what are some of the favorites out there?

Thanks.
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Old 03-26-2006, 05:18 PM   #2
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Is there any class of motor you are after?
What esc are you running?

Cheers
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Old 03-26-2006, 07:05 PM   #3
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Is this the car that you have?

http://www.vintagercweb.com/optima_mid.html

If so, then.....

WOW!!! You really are going way back with this car... Back in the day, the Optima was awesome, but now...well, it's time has come and gone. If you really want to drive this vintage car, any motor will fit, however, I'm not sure that that almost 20 year old drive train will handle some of the more powerfull modifieds that are common today. Maybe start with a stock or a 19 turn and see how it performs with one of those. In any case, drive carefully....
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Old 03-27-2006, 12:12 AM   #4
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Default MID

Way to go. I started with a Turbo Optima Chain drive than went to the Mid when it came out. I won the 1988 state titles in Australia. I still have it now, The hottest motor in mod back than was a Spa 240 by Kyosho (18x2) I wouldn't go any more than a 19 turn by todays standard.
I brought myn out for a run a couple yrs ago and went well for half a pack than it snapped a front hub carrier. The plastic went brittle. I think you are better off keeping it in retirement.
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Old 03-27-2006, 03:14 PM   #5
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Thanks for the replies.

Yeah, that's the car. Belt drive. I bought it brand new in '87, it was a great car.

I probably will eventually buy a new car and maybe even get into small nitro cars. But for now I just want to get this guy running and have some fun before I decide to spend some cash in the hobby.
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Old 03-28-2006, 01:03 AM   #6
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The Mid Optima has one of the strongest drivetrains on a 4wd buggy ever!

Big 32dp nylon gears, large HTD belt - it can take it all.

We were running 11 turn motors back in 89 on our Mids without any king of abnormal wear or durability issues.

It was just one fantastic car.

The only concern I'd have is if the belt has gone all stiff from years without use.
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Old 03-28-2006, 02:24 AM   #7
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let your belts soak in WD40 for a night.. it will soften them up and give them new life.. optima mid belts are quite strong too...

On the motor side, i d recommend a 14X2, the transmission would suffer if you went for something really hot (like 11X2) .. the car is not designed to take todays low turn high power motors and batteries.

The only part that really needs attention for wear in the transmission is the intermediary pinions in the rear gearbox. they take a lot of stress.
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Old 03-28-2006, 04:24 AM   #8
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dont run the car!!!the gears wear out quickly..u better save it as parts are impossible to get,the first thing that will go is the ot85 counter gear....
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Old 04-01-2006, 09:36 PM   #9
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Great buggy to keep on the shelf..
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Old 04-02-2006, 03:32 AM   #10
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I wonder if someone still have the old steel reinforced white belt for Optima Mid? I had that installed on my Turbo Optima and I haven't had a single problem...the last time I ran it...back in early nineties before I got my Lazer ZX-R.
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Old 04-02-2006, 03:50 AM   #11
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Well, I hate to say it but there are too many collectors out there, to have one more.We make parts for obsolete cars all the time(last job rear and front axles for TRC Lynx II car).I'd like to see more people doing what the japanese do: develop their own ride.They use Nikko Brat,the original Yokomo Dogfighter,all versions of Optimas and generally anything they can find.Take a bite here:
http://www93.sakura.ne.jp/~time-tunnel/05-12-4-1.html

This results in an extensive knowledge of their vehicle ,direct comparison of designs on the track and not through they internet and the sheer happiness of creativity...I'd love to see more people doing that.Shall you need any help with custom parts, drop me an-e-mail: [email protected]
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Old 04-12-2006, 12:22 AM   #12
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Skidrow, not everyone has the skills to put a buggy together or have a heap of old parts lying around, or be able to buy a heap of parts. I have a couple of cars and have made custom parts that have broke but is so time consuming.

People like to collect old cars to remind them of the good old days thats all.
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Old 04-13-2006, 05:57 PM   #13
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AH, the good old Optima Mid Special..........it was so speical that I don't even remember how much money I have spend on her, how many lunch that I skipped because of her, and how many classes that I have failed because I have to play with her.........just too much.
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Old 04-14-2006, 09:09 AM   #14
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i had an optima mid costume sp. and the only thing that broke was the center gear ( i used a 15tr motor ) but i replaced it with a steel one from mip and it solve all the problems... my car olso had a rear ball diff and a front one way and it handeld great !!!!
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