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Post by jjt on Apr 15, 2018 0:14:06 GMT -5
I recently acquired a totaled 650 Burgman. Front is demolished. Seat is missing. Some wires cut. It’s been sitting for a longggggg time. I’m going to transplant the 650 in to a stripped down Chinese gy6 based scooter. I was originally going to put it in my zuma until I realized how HUGE this motor and trans is. Every since I swapped out the 50cc engine for the gy6 150 I really enjoy riding it. I’m afraid with the 650 it will be fun to ride but not fun to ride all the time. I think the Chinese 650 will be a rocket on a straight away but not as agile as my zuma. Anyway it should be fun to build
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Post by pistonguy on Apr 15, 2018 8:46:54 GMT -5
Sounds like fun
Post some pictures for sure.
That Front Fork setup on GY based 150 would be real sketchy with that much motor an top speed.
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Post by wheelbender6 on Apr 15, 2018 9:04:02 GMT -5
Awesome. Make sure to transfer the BRAKES from the Burgman too. You'll need 'em.
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Post by cyborg55 on Apr 15, 2018 9:27:33 GMT -5
Piston guy is correct again!!! I hate it when that happens,,,I'd be real Leery of the front end ,,,piston and I have talked on the phone about this very subject,,,I'd be wary of not only the speeds you'll be able to attain with a big mill but also the deflection and braking forces ,,,the single clamp forks are not up to the task and is a very dangerous situation,,,I'd be looking at getting a small dual sport or dirt bike fork set up to graft on that thing,,,,something with a real live triple tree also you'll need to address the chassis period,,,(this is just my opinion ),,,my last build (an 02 Ducati monster s4 that I built out of a st2 chassis ) I had to gusset the frame in quite a few places because of movement,,,so take a long look at the build and consider all the weaknesses from every angle,,,
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Post by jjt on Apr 15, 2018 11:26:53 GMT -5
The plan is to swap the whole front to the burgman. Triple tree, forks, wheel and brakes. I can run regular handlebars this way plus the bigger wheel and brakes. It will also give me a lot better suspension that’s upgradeable and adjustable. Should be a pretty easy swap. I think the only part I need to make is an extension to make the neck longer or I may even cut the neck off the burgman and weld it on.
Right now I’m just trying to make the burgman run again. Once it runs on it own I will start taking everything apart. I was able to get it started but it won’t stay running. I need to dump the tank and get some fresh fuel in it. And I want to get the starter button working. Right now I’m jumping the solenoid. I just want to know everything is working before I rip it apart
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Post by oldchopperguy on Apr 15, 2018 23:10:55 GMT -5
jjt,
Have a bone for this ambitious build...
Using the suspension and other parts from the donor bike sounds good, and, as the others have mentioned, you should address the frame too. My first scooter was a GY6 150 and it was fine "as-is". Later, I traded for my present Kymco 250. The old Grandvista is very similar to the Chinese 150's in size, proportion and wheelbase (a very small 250).
However, it is a full 100 pounds heavier. the frame is ENORMOUSLY stronger, stiffer and with thicker tubing. And it's only a 250.
I think the more safety-oriented parts from the donor bike you can salvage, the better off you will be.
Weld in gussets if needed, and keep it strong, stiff and "heavy duty"... The 150 step-through frame will likely be the weak spot. With the power, speed and brakes, it's a definite potential source of "wobble". Triangulating it with a brace to tie the frame together could be a real improvement. A few pounds of extra steel won't hurt... You'll still have the nimble size of the old 150 with real power!
Please do keep us posted with pix, and ride that beast safe!
Leo in Texas
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Post by jjt on Apr 18, 2018 17:14:58 GMT -5
Right on. After looking at it I may keep most of the tail section from the burgman and fab it up to the 150. That way I keep all my mounting places and can keep custom work to a minimum. Still going to have to make a lot of bracing to keep it from twisting( I think). I did get it running so I can start taking it all apart as soon as I get time. I will take pics along the way
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Post by oldchopperguy on Apr 19, 2018 0:26:33 GMT -5
Right on. After looking at it I may keep most of the tail section from the burgman and fab it up to the 150. That way I keep all my mounting places and can keep custom work to a minimum. Still going to have to make a lot of bracing to keep it from twisting( I think). I did get it running so I can start taking it all apart as soon as I get time. I will take pics along the way Jjt, Sounds like a great plan for a VERY special custom build. And, judging by my experience with my first 150, you will likely need CONSIDERABLE bracing... LOL! Those light step-through frames ARE mighty "twisty"... But, racers stiffen them up with gussets and tubing and they work out fine. A little cutting and welding and you'll have a FABULOUS scoot! Have a bone! Leo in Texas |
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Post by jjt on Apr 22, 2018 21:21:10 GMT -5
Got both scooters stripped down today. The 150 was a piece of cake to get apart. The burgman was like taking apart a very expensive puzzle lol. I took some pictures but I can't figure out how to load them. I'll try to figure it out when I get home.
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Post by jjt on Apr 25, 2018 23:52:18 GMT -5
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