Yamaha Zuma Vertical Engine

1998- 2001 Zuma

Yamaha Zuma Exhaust Cylinder Kits

Pre-2000s Zumas are everywhere and with more and more of them passing to new riders they need service and repair. Most take the opp to upgrade which is the way to go since stock parts you will not find and they will cost much more from Yamaha. So lets get down to it and understand the newer Zumas that are two stroke use a horizontal Mineralli engine and the older ones use a vertical engine known as BWs and have a different look altogether.

The newer 2012 Zuma uses a four stroke LC EFI engine that has limited upgrades for exhaust and CVT. These are exhaust which Two Bros offers a great looking sounding performance exhaust, plus since the CVT has not changed the variator, weights, clutch and clutch bell can upgraded. I would need to look into the final drive gears to know if they changed those if not that would make the best upgrade since there NO 70cc kits for LC EFI Zuma 2012 and scooter.

That brings us to the ONLY place to get top quality parts for the Zuma early years is Scootertronics. Everything from all engine parts to the plastics and  lights we got you covered. Some great prices on Exhaust from top names to the best Polini cylinder kits.

Building Scooters Motorcycles

SR400

Building Scooters and Motorcycles

Something I have done for quite awhile now is design and build scooters that are raced by SRC a scooter racing team that was put together in 2008 to race the Mid Atlantic tracks with the Mini Moto circuit that included tracks in MD, VA, NJ, PA and Ohio and dragways in IN and IL. Through 2011 with up to 14 race days a year SRC hit the tracks and hit them hard. Racing along side Mini Moto motorcycle racers with up to 150cc bikes that were both AC and LC and the ever fast Aprillia 50s plus the Honda NSR and Yamaha YSR 50 mini motorcycles.

While landing a scooter race without the motorcycles in on the track the scooter class depended on the amount of scooters that showed to race. Needed 5 for legal start. It was simple math to me bring 5 scooters with riders. With up to seven in the SRC Crew and 3-5 outside SRC we had ourselves a scooter race. These events took place at NJ Motorsports Park at NJMINIGP events and Sandyhook Raceway in MD. Great days that put SRC scooters up to the test. These races taught me alot about scooter tunning. Several times a scooter was built with all name brand products from Polini, Malossi, NCY, Yansuni, Stage6 and MRP without good results. But fine tunning solved that problem and most of all matching the right products up with each other. Sometimes an awful bogging problem that could not be figured out that took me back to the drawing board knowing it was not fuel and air. No one waslooking at anything else but fuel and air. Knowing RPMs in a scooter CVT depends also on the variator, weights, clutch and bell and torque spring. A 2000RPM torque spring solved the problem now you have to hang on or push the bars hard to stay up right. Thats right you push on a motorcycle or scooters handle bars to turn along with your body turning to get around the corner. Not as extreme when racing  but same principle. Trail and error has helped along the way. This time out I will depend more on my design skills and a flare for art. A motorcycle, of course vintage comes to mind same as a classic car as well as a hydroplane are works of art for me the same as an old strat is like a vintage car dashboard. Art Deco comes to mind so thats where I am what that look.

 

SRC Pits

Which brings me full circle into 2012 to motorcycles which is where I started my ridding in the 70s and really got into it while in CA in the late 80s. Bringing my work and projects to a smallerscale for one person to manage  is not the easiest task. At this time a shop is being put together a little closer to my home with keeping the other two moving along with service and repairs. The builds will be kept close due a lot of trial and error. I do have a lot of info to help also a few guys who are pros have already started my schooling. For the time being on the street I have been ridding a 2006 CF Moto V5 which is an automatic motorcycle using the CN250 scooter engine.  The V5 has seen a few better days and is testing a new V5 pipe at the time. So far so good on this test although the exhaust pipe is smaller and not quite as loud which i am not really excited about. The consumer will be happy. The pipe is made for CN250 engines in scoooters and CF Moto bikes.Having a few Honda CB bikes and Yamaha SR’s over the yearsgot me ridding a Vento motorcycle’s over the past 8 years. I kept a Rebellion which is a 150 like a Yamaha 175 which I had the pleasure of owning in the late 80s along with a 650 while in CA. The Vento is also a lot like a Honda rebel for size.

At this time I have startedthe design for building on Yamaha SRs and Honda CBs and a good chance a CRF plus scooters and mopeds. These will not be restore, not looking to rebuild I am looking to build those bikes into Made in the USAhand crafted motorcycles along with the scooters that are being built for 2013 by Scootertronics. A large part of my owrk with scooters is gettinmg them safe in traffic which cab be done easily. So many folks call for high performance engines that I will simply make the high performance scooter and deliver. On the scooter side will feature four stroke and two stroke 50s that are modified to with stand today’s traffic at 45mph average speed.  First up though is Liquid Cooled 90cc Jog which will not be for the street at first. I do have a race on Oct 26 2012 so we will see what she will do on that date. This does not mean that all will be 70cc-90cc machines but there will certainly be a few at 70cc and 90cc and everything in between. I d have some pics of other builds which are really stripped down bikes with some aftermarket parts and custom seats plus higher grade tires, pipes and well everything is custom with a price that will allow them to be bought and sold less than a brand new one in today’s market. This will allow the consumer to have a custom bike built for them.

The local Mid Atlantic area will have the motorcycles and scooters hand delivered as always. Stayed tuned a lot will happen over the next 6 months for 2013. Always starting in OCT to get ready for the next year or season, so hang close while I put together some bikes and scooters and secure some more vendors and parts which I have several trips planned for the states in NOV for CF Moto and Nachman and Texas.

CB200

 

Triumph Tiger 500

Its that time of year lets get it together and make 2013 a slamming USA year.

August Sept

With a heavy Aug for orders and repairs and certainly mods and upgrades plus the New Honda PCX 125/150 products keeps Sept busy.

NCY Rear Shocks

With Sept closing out more riders are continuing to ride longer into the season with a larger increase in riders in the sourthern states as well as out west in CA and CO. With Kymco keeping two strokes alive and well with the Super 8 AC 2T which has to be on the top of my list of scooters which continue to perform above all others in its range with its unique design and high performance final drive. The Super 8 as well as most Kymco 50 and 150 models have a final drive gear ratio that produces better top end than most other scooters. When upgrading its better to keep weights on the heavy side which I have seen 8 and 8.5gram weights in a 50cc 2T  compared to 4/6gram in Yamaha and CPI and Keeway.

Upgrade Mod Parts

A 2T Keeway Matrix with 12 inch wheels will have 4gram 15X12 roller weights out of the box where a Super 8 2T will 8gram 16X13 and to me out performs the Matrix. Both can be upgraded to get top end speeds of 60-70 but not everyone of them and it takes upgrades to all parts of the engine.

Scooter Performance

Scootertronics offers and stocks many performance parts for scooters from Piaggio to all the Chinese scooters which are very close to all types of Kymco, SYM, Piaggio Yamaha and Honda scooters. which have the CVT and fuel and air all in common. I mention Piaggio because these are highly popular as the best made.

The Chinese brands of scooters copy the style and look of Piaggio, Honda, Yamaha and the rest of the brand names. Many of the Chinese scooters look like the top brands thats the US does not see.  The Chinese borrow from the top brands for their CVT which means the variator and clutch will Kymco, Piaggio, Honda as well as the Chinese brand due to its all in the splines which so far for me is two. One is Honda or Piaggio which is GY6 for Chinese and Kymco for Twainese. The other main one is Yamaha. Items such as cables, levers, brake pads, brake shoes, grips, carbs, tires and many other parts are all interchange able. So many things are learned when the scooters are in front of you everyday. Now what happens a lot is your local motorcycle repair shop or scooter shop will need exact replacement that matches the parts number. Well a lot of time this will take a long time or will just not happen and a little knowledge and hard work with an open mind will work just fine. Unlike the auto parts industry the scooter industry is very young in the US and networks are just not there yet. A throttle cable for for a two stroke scooter is just that no matter what the brand name. Brake pads are brake pads and carbs are carbs. Take the front brake pads on a Chinese small scooter with 10 inch wheels well same ones on a Yamaha Zuma and guess what you can get a very nice set of EBC pads that will last a very long time.