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Post by scootertrash on Oct 11, 2013 20:02:03 GMT -5
So I've pretty much exhausted my search for a 150 engine with disc brake. How difficult to swap the brake out if I buy a motor with drum brakes? I'm thinking pretty simple, just run the cable, install new brake handle, and splice the brake switch wire? Am I missing anything?
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Post by jeepsteve92xj on Oct 11, 2013 21:25:19 GMT -5
Is your brake on the left side or right side, in the rear?
My Xingyue has the caliper mounted on the left on the back end of the CVT .
My Znen has the caliper mounted on the right side, on the steel swingarm. IF I had to, I could change to a drum brake - though I am not sure at the moment, my wheel is a drum wheel or not. But the area around the axle has at least some of the nubs for mounting shoes.
brake shoe parts, cable, lever, and rim
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Post by scootertrash on Oct 11, 2013 21:33:50 GMT -5
The brakes on the swing arm. I'm looking at a new motor, and can't find the one for disc brake anywhere, so figured I'd switch over. I have the rim, brake handle, and new cable, so I don't think it should be bad to do.
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Post by tvnacman on Oct 12, 2013 6:17:08 GMT -5
I converted from drum to disc . Remove the brake cam and stop , then assemble the rear wheel .
John
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Post by scootertrash on Oct 12, 2013 15:38:59 GMT -5
John, did you have to change the axle? I have the stock rim with disc. I thought the axle was a different size on the drum
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Post by tvnacman on Oct 12, 2013 20:09:23 GMT -5
No I did not have the change the final drive shaft . I don't know details with measurements , but that is a walk in the park replacing the final drive shaft . I did an engine in a buggy this summer the engine came with reverse . I had to exchange the forward/reverse selector shaft . It was harder to get the linkage adjusted, then to open the gear box and swap the shaft .  John |
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Post by scootertrash on Oct 12, 2013 20:47:25 GMT -5
now you got me thinking to just buy the drum motor and change it if over! Seems a lot cheaper too! Thanks, I'm going to do some research, and probably do it this week
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Post by tvnacman on Oct 12, 2013 20:57:22 GMT -5
look at the measurements or show me the measurements , I get engines too .
John
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Post by pmatulew on Oct 13, 2013 7:57:43 GMT -5
That's what I was thinking. I've got a 12" wheel Znen like JeepSteve and the rear disc components are all mounted on the right side swingarm. The left side engine casting has all the nubs and mounting points for drum components but they are not being used. The deciding factor would have to be the rear wheel itself as the "disc" wheel has a mounting point for the actual disc and a "drum" wheel would not. The "drum" wheel might also be wider in order to contain the brakes shoes. The engine side is likely interchangeable though. Here's a picture from Steve's album -->  |
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Post by tvnacman on Oct 13, 2013 8:11:29 GMT -5
I did have to make some changes to the wheel spacers between the swing arm and wheel . Your starting with disc brakes I think you will have less work .
I had to find a rear brake assembly to work with my swing arm and all the hardware and the hardware to mount the rotor and wheel , your a few steps ahead everything is lined up you have all the hardware . check the shaft length at worst you may have to swap the shaft , easy peasy .
John
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Post by urbanmadness on Oct 13, 2013 10:50:25 GMT -5
I have a short case on mine so changing over wouldn't be easy.... Oh how I'd love to ditch that drum in the rear... it's very ummmm grabby and pulsey when it gets hot. Although my rear wheel does have a little wobble so that is probably most of the problem. All and all, I hate that drum brake. Not only that, it just doesn't feel like it would be adequate if I got any more speed out of the bike. It does 70 indicated and 58 via GPS. When it did about 52 or 53 tops the brake seem like it was adequate, that extra 5mph made all the difference.
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Post by scootertrash on Oct 13, 2013 10:51:48 GMT -5
Thanks guys. Not sure what I'm going to do. I may be getting a great deal on a 50, which would help me get 4 wheels going sooner. I do really like my 150 though, and don't want to give it up! If I do keep it, I'll post the mods I do either way.
Sean
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Post by shalomdawg on Oct 13, 2013 12:40:16 GMT -5
howdy, i may be like pulling the dogs ear and might get bit but here goes. i mostly use the front brake because i want to equalize the wear between the front and rear tire. that means i come to stops more gently by starting the braking sooner and not coming in to the stop where max braking is needed. thus for my usage the drum brake is more than adequate. i do realize that should the situation require max braking , i may not have the max possible though i have ridden thousands of miles with drum brakes and found that one can still lock up the rear. that indicates to me that drum brakes are more than adequate. just a suggestion that perhaps one can save the money from changing the brake and put that into something different for safety or comfort.
peace
lotsa miles and smiles to ya
ken
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