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Hey guys, I didn't know where to put this, but "introductions" sounded better than "off-topic". It is kinda "on-topic" where I got into this forum to learn. I've been offered a position at a local Community College to teach Industrial Mechanics to 2nd and 3rd year students. Only a term position...

Pretty much all Yamaha sport quads (Blaster, Banshee, Raptor, Wolverine) use pretty much the same rear brake setup, the same caliper and master cylinder. Here is the typical rear caliper: The pre-2003 Blaster has a floating disc, so you don't need the floating plate. Take it off! You can...

A selection of cylinder heads for a variety of performances. Back (Top) left is a Torroidal chamber for rock crawling torque Back (Top) right is a Hemispherical chamber similar to DT200, for top speed power Front (Bottom) left is stock cone shaped chamber Front (Bottom) right is stock Big...

This build has been stalled for waaaay too long. My son (Triplecrown) put the engine together. It has a Vitos 72mm triple exhaust, 4 intake cylinder and a 3mm stroked and stuffed crank. Some new parts were put in the motor and gearbox to replace worn items but it is pretty much stock other than...

A bit off topic for this forum I know, but I thought you guys would like this:

A bit off topic, and many vids about this, but I especially like this one. Jackie Stewart "It's not new to me, but this is man's country this!"

Well, maybe not, but the US military is doing it to 2 stroke drones. Sonnex 2 Stroke to heavy fuel It still uses a carb and sparkplug, but raises the compression to about 15:1 and uses a steel insert in the cylinder head to get hot and vapourize the fuel. A glowplug is used to get it...

Today was the day we were going to test out the boost port and get the JoeAK47 cylinder on. Unfortunately, we got a monster dump of snow. That slowed us down a bit. Here is the KTM Blaster in the plowed driveway: Well, about 4"-6" of soft wet snow, we buzzed the two Blasters around...

I bought Gordon Jennings book "The Two-Stroke Tuner's Handbook" in 1976 to apply to my 1974 CR250 Elsinore. It seemed like rocket science back then, so many radical ideas that had been mostly secrets and rumours up until then. Gordon put figures and math to the theories, and made it possible for...

Just thought I'd share these pictures with you guys. I believe the engine is a Gasgas EC250 and the article is on case to transfer port matching Note the intake port in the cylinder much the same as the Blaster, only not split: Now, as the camera backs up, look at the massive Boyesen ports...

Head on the left is our new KTM style toroidal 25cc head. Head on the right is DT200 Hemi style 23.5cc, and includes a poor squish angle. This head has been run for months on Triplecrown's stuffed intake and 1mm exhaust raised ported cylinder. This cylinder was run with no basegasket to...

Just took some picts so thought I'd share: Just pulled the head on the right off Triplecrowns Blaster, and want to know the CC because it was filed the last time it was installed. Gathered my tools, not shown is the frosty adult beverage. Syringe is from the drugstore. They gave me a bunch...

Well, I got some time and the FLIR camera and got us some heat picts. I am not the usual user of this device but I have been asked to get more experience with it. Here is a start: Blaster warming up, short run around the yard, 7 to 8 degree C here on Sept 12. The streaks on the pipe...

A while back I got a weird vibe out of the Blaster, turns out middle motor mount was broken. Pulled the motor out to fix it and as I knew I had a cylinder scuff, I wanted to get it replated, so pulled it and sent the cylinder out for replate. Turnaround time is going to be longer than I figured...

Blaster Axle nuts. To break these bad boy nuts free you need a couple 50mm or 2" wrenches, and probably some heat, penetrating oil and muscle. Have you checked the price of big wrenches? About $50 each and up. Now, you could buy a couple big pipe wrenches for about half the price, but...

Hey guys, I've got the boost bottle off of Neil's DT motor and I am going to publish the top secret specifications: Volume of the bottle is 200ml (or 200cc) Neck is diameter 0.312" and length is 1.150" You can read all about Helmholtz resonators at: Helmholtz Resonators for all the...

For all of you that want to remove your air box, I'll show you a reason to keep it: BLASTER THRU DEEP WATER | Facebook

Has anyone here modified their cylinder head for viton "O" rings instead of a headgasket?

I need a new thumb throttle. Of all the designs of thumb throttles, which is the best and why? Looking at used, new and aftermarket and other makes (ie: Honda TRX 250R, Banshee, Moose Billet, Terry Cable Dual Gasser, etc) If you can find pictures to post along with your views, that would be...

So, weather was fine the other day, -5c and sunny, so my son and I went riding. He has got the DT200 powered Blaster running fine, so I took his DT200 bike along to compare. As well, I just had my KTM 250 powered Blaster out alongside his quad the other day and we have a lot of time on the...