Another A55 build

I picked up a very abused Streetmate for 100.00 and decided to see what I could do with it. I have a weird addiction of making things fast that shouldn't be so I stripped it down and mounted an eBay Honda 125 tank and honda 125 cafe seat. I had to chop 3 to 4 inches from the top of the fuel tank for everything to line up. Cheap drag bars on it and controls from Amazon. Airsal kit, home made intake from 3/4 copper, ktm 50 clone carb running premix. IT had a Tecno Boss pipe on it to begin with but now has. MLM Cali side bleed. Only mods to the kit were a minimal transfer port match, I just angled the airsals ports to match the a55 case. Have the Jammer clutch on 1st and the non cork actual friction material 2nd gear clutch. 27/24 gearing. I weigh 240lbs and iv managed 49 mph on GPS with a slight downhill at 9460 rpm. I'd like to get up in the 50s but I'm not sure what I'll do next. I want to get some more rpm out of it. I planned on raising the exhaust port 1mm, lower intake 1mm and cut 1mm of intake side of piston skirt. Hoping I'll gain some there. I was curious if anything is to be gained by going to mini rotor ignition setup as well. I'll post updates as I have them and if anyone has any advice or suggestions let me know.

Re: Another A55 build

Trying to attach some photos but my phone is being slow. I'll try again tomorrow at the shop

Re: Another A55 build

Sounds like you are on your way! I can’t remember, no way to go 22 on the rear without mods correct? I’m hitting low-mid 40s on an unmodified stock cylinder on my a55 Street mate, decked/shaped head, bullet pipe, high flow vstack w/air box, 26X26 if I remember correctly.

Re: Another A55 build

welcome, we all have the same addiction.

the hpi isnt gonna give u more top speed being lighter. by reducing weight itll give quicker accelleration but pretty much same top speed.

But...if ur running the stock cdi, it may have a rev limiter around 10k. If u have one of those id switch out to an unrestricted one.

Before raising and widening, lowering and widening ports which is a good next step, im curious if you bolt up the tecno boss pipe and detail its performance compared to the mlm sidebleed, top speed/torque, i've had both pipes but have never tested them back to back but as i recollect the cali will have a quicker and wider powerband than the boss.

Testing the boss would also give you a starting point after you port as how much exgaust header to chop off (1in removal equalling 400 rps) to increase the rpms when the power band hits. Also the boss header extends into the pipe which is dumb and youll wanna clean that up

Re: Another A55 build

The MLM pulls much harder and has a 3mph top end gain. Vs the Tecno. As for the ignition being limited iv free revved it well past 10,500 with no break in the ignition. Weight wise the bike is pretty stripped down and I doubt I'm shedding pounds any time soon haha. Going to try and upload pics again.

Re: Another A55 build

Got attachment to work

PXL_20210102_222754894.PORTRAIT.jpg

Re: Another A55 build

One thing I have not done is check the timing and I assume to even change it the trigger would have to be moved, not sure if I'd gain any more rpm under load from the amount the trigger could probably be moved either.

PXL_20210102_222724677.PORTRAIT.jpg

Re: Another A55 build

Overpriced Parts /

5,10 210lb, near or about obese category, stock revival a55, cylinder Large metal mesh filter large size 64 jet, 24tooth rear sprocket, 20mph head wind,

Re: Another A55 build

COOL KEN.

Re: Another A55 build

If you get to the 'm' on tomos that means you're going 55!

Re: Another A55 build

That's a fun looking street mate right there. Nice build my guy.

Re: Another A55 build

Thanks, it looks a lot better with the MLM pipe on it now.

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