Thursday, April 10, 2014

Weeks of pics, M11, Derbi T.T., Vespa Polini Porn.

Welcome to my blog, prepare yourself for a wild ride. My mac charger finally came from Chile and it only took 3 weeks! It was TOTALLY worth saving $10 dollars, let me tell ya.  In the last few months I have been moving all my stuff to my new apartment in Bridgeport. I really love Bridgeport! I live by some rad mopeders, HNRZ Tony lives a few blocks away, Dougie Fresh lives around the corner and the DRC Kinetic gang lives down the road. The neighborhood is awesome and has a lot of critters to watch scamper down the street. Moving into an apartment from the Castle has been a humbling experience moped wise. To have no garage and not being able to rev bikes out at 3 am is a real bummer! But domestic moped life is fun too, just a little tricky at times.  Here is a few things Ive thought were worth a post in the last few weeks.

This is what I tell people my blog URL is.
 Working on the Moby M11. I'm doing every free mod I can first. I bored the intake out to 13mm and found a 12mm Del sha for the 10mm Gurtner replacement. I couldnt go larger with the boring because I got bored.... Jk actually the intake has a weird bend and was super difficult to bore deeper than 2 inches in. 
It doesnt look like a big difference but hey Im splitting hairs here.
 Fit in well with a Derbi Del sha air filter. 
Hack and weld mild Honda pipe and it sounds great. Went riding but was was seemed to be like fourstroking with a 52 jet..... even without the airfilter. I think I'm going to mess with the timing. No real difference other than the fourstroke... :(
Picked up this bad boy from Tony/Josh HNRZ. Vespa 50cc water cooled Polini W port kit. HOLLER! What should I put it on? The Citta or a TFR? L.A.M.F.
 "So that's whats gong on inside there"
W port in full boner effect.

I'm going to widen this a tad to match the ports better.
 Moped apartment problems. 
 Hey it worked dudes! New clutch installation, removed the Malossi contra spring (gained 4mph) new rear brake shoe, and "realigned" my rear wheel on the Grande. This bike will not die, it is such a great little moped.  I was riding the otherday and the rear brake line snapped, and got wrapped up in the rear varo, I skid to a stop, it was rad.
 Derbi T.A.T. Acerbis tank install and Im still working on the engine.
Been playing this a bit, getting ready for the Moon Level of the Derbi T.A.T.
 Derbi gears sent from the Derbi angel Steve Brown. 
I still owe Ryan Nash $100 bucks for this. Gianelli HI-boy looking great. Guys FYI just because it is called the Hi-Boy doesnt mean I will be high when I ride! MOPED HIGH, PEOPLE DIE.
My newest art piece, called Lan Party Swag. $420 dollars for sale on Esty.

Thursday, March 13, 2014

Derbi T.A.T. Build start and Derbi Piston port differences.

Soooo if you havent heard, a bunch of us are doing the Trans American Trail on Derbis.  The idea was thought up by Blk Blk Shawn L and its a pretty rad concept. The trail spans from Tennessee to Oregon and its mostly off road. Check out the site Here! and like or donate if you'd like, anything helps. Lots of rad dudes are working together to make this happen! This isnt limited only to Derbis but we thought it would be rad to all ride the same bikes and to coordinate tools and parts between us. If you want to join, that would be rad! 

So I tracked down a 1979 Derbi T.T. for my T.A.T. bike. It was completely seized and pretty shitty when I got it. What a better bike to destroy....right? 

Ive been doing some thinking and I can only afford to take a couple weeks off at the shop. So Im planning on just doing the trail up to Denver so the shop doesnt get too far behind. With all the discussion between us planning on going there are some very modified bikes in the works. My bike is going to be sort of an experiment/test of the stock components of a Derbi.  I am planning on riding a completely stock Derbi other than pipe, gearing, and frame mods. That means 12:12 Dellorto sha, stock top end, all the goodies! I am such a fan of stock bikes and I really feel like gas mileage is going to play a big part in this ride. The T.T. has a stock 1 gallon tank and I recently purchased a sweet Acerbis front fork tank that carries 1.3 gallons ($40 shipped ebay!). 

I need to convert the Acerbis tank from siphon fed to having a petcock, but that shouldnt be too hard.  So 2.3 gallons and a 12:12 should get me a ways down the trail. I just worry about people using kits and large carbs because we all know how off and on throttle kills mileage.  

Im rebuilding the engine right now and trying to salvage any stock parts possible. Got lots of ideas about this bike! Everyone is coming up with super rad ideas for their bikes, its inspiring.  Anyways stay tuned for some dumb offroad stock Derbi updates.


Ive been wanting to posts pics of Derbi PP differences for a while. I finally have 2 piston port engines off bikes and next to each other.  As you may know some Derbis (Laguna Sport / RD-50 / C-5 Diablo) came with tubular cradle frames and some came with stamped step through frames (SLE / T.T. / SL). All of these models came with either piston port or pyramid reed engines depending on the year.
 Well the engines that came on the tube framed models have a few differences than the ones that came on the step through frames. The differences were for clearance and mounting issues, check these pics. 

Step through frame
 Engine uses 3 mounts, one top front, one top rear, and one bottom rear, just like how most traditional moped engines bolt up to a frame.
Tubular frame
Uses 3 mounts as well. one top rear, one bottom rear, and one bottom front. It's hard to see the bottom front with this photo. See how the top front mount isnt used and doesnt even come with motor mount bushing in it. If you used this engine on a step through frame, you would have to figure out a solution for the front motor mount bushing being absent. Also note how close the head fins are to the frame.
 Left: Step through PP engine. Right: Tube frame PP engine.
Look at the engine studs on this tubular frame style PP engine. They only stick 1 and 3/4 inches out of the case compared to the 4 inches the engine studs stick out of the step through style PP engine. It is designed this way so you can remove the head and cylinder with very little clearance room of the tubular frame. Food for thought for anyone experiencing clearance issues on a custom build. Also note the 2 bolts under the crank case, those are the front engine mounts for this engine. 
Left: Step through style PP cylinder. Right: Tubular frame style PP cylinder. 
 The reason the right cylinder has large holes is because the engine nuts are 3 inches long because of clearance issues with the frame. 
 Tubular frame style Derbi head.  This is one of the 3 inch deep engine nuts for holding the head and cylinder on.  Dont lose these!!!!! Important!!! Notice the large holes for the large nut. 
 Traditional step through frame style PP head. <--- long title. Regular sized holes for engine studs. 

So if you have a random Derbi engine or are doing an engine swap, hopefully this can help you identify you engine or plan ahead for a build. Freaks.

Below is a random Derbi discovery. A stock v1 ring works as the bottom ring on a stock Derbi piston.  Who knew?!