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Author Topic: Building my own two-stroke "Mongrel" - Inspired by CharlieT & TedT  (Read 10214 times)

Offline johnu

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Billy I love this build, it's gonna look sweet!  However if it were me I would have to trim the bottom protrusion from the tank sides and also lower the rear mounting slightly to drop it down a touch at the back.  I think it would look better with your seat that way just mho tho.  Are you going to modify the subframe where it extends beyond the seat?  I personally like the led strip lights that have brake tail and turn signals in them.  Nice job on the slip rol repair, exactly the same thing happened to mine!

Offline BillyGoat4130

  • Posts: 128
Thanks! I am trying to decide on leaving the lines of the stock sub-frame (will do a lot of trimming and bracketry removal) or make a new one and make it have some roll bends to meet and follow the radius of the back point of the seat.
The question isn't who is going to let me, it's who is going to stop me.

You can't reason with the unreasonable.

Too dumb to quit.

Offline Tune-A-Fish©

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you can paint the tank so the drool sorta goes away: Not sure why the choice in the first place tho/

For sure a tire hugger lashed to swinger is the best solution for an inner rear fender.





"I didn't come here and I ain't leavin"  Willie Nelson

"love hard, live fast, die fun" Kacey Musgraves

"Like a Wreckin Ball!" Eric Church

Offline BillyGoat4130

  • Posts: 128
Thanks for the idea and suggestion on the rear tire hugger. I'm now browsing and looking for something suitable I can use for that :) And the tank will definitely get some paint. Or maybe stripped,brushed, clear coated...

Haven't accomplished a whole lot in the last week. Figuring out how to mount this seat, and putting it where I really wanted it has been a bit trickier than I expected it to be. The front mounts on the seat kept getting in the way of it sitting down low enough, on the back edge of the frame back bone above the rear shock mount and general area where the gas tank bolt down is there. Had to trim my rear tank mount (it needed it anyways), and cut a notch out of the front of the seat pan, tried and retried the front bracket about 5 times till I decided to flatten it in the vise and turn it over backwards + weld some studs in it. So basically I wound up making the plate bolt to the pan, and then the plate will bolt to the sub frame further back to stay out of the way of that shock tower and rear tank mount area with enough room to actually get a wrench or socket on the nuts.  Plan is a simple piece of split rectangular tubing ran cross ways of the frame for the front mounts. Rears will probably be the same but run parallel inside the subframe tubes.

Pic attached is pretty close to position the seat will be in. I am not hunting up some suitable rubber bushings/isolators to mount to the sub frame to put between it and the seat pan.

sidebar; I almost wish my ride height was as high naturally as it is on the stand is it would make the decision to build an underslung pipe much much easier...:)
The question isn't who is going to let me, it's who is going to stop me.

You can't reason with the unreasonable.

Too dumb to quit.

Offline stroker crazy

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I almost wish my ride height was as high naturally as it is on the stand is it would make the decision to build an underslung pipe much much easier...:)
Looking forward to seeing the pipe underway!

Crazy
“Ride like the Wind” W.H.

Offline BillyGoat4130

  • Posts: 128
Looking forward to seeing the pipe underway!

Crazy

Just finished working through the hardest parts...  :-X

Will wind up with a pipe that has a largest nominal diameter of about 4.5 inches vs the first one I built that used Blair's formula and was like 9 inches around. Will make the possibility of going underslung much better.
The question isn't who is going to let me, it's who is going to stop me.

You can't reason with the unreasonable.

Too dumb to quit.

Offline hooligan998

  • Posts: 146
Late, but I'm in. 

Offline teazer

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4.5" sounds more reasonable.  There are more modern pipe designs available but they require a lot of port and engine dimensions to enter into the software - and how much power do you need......  What size is that motor?  I missed that part of the story. 

Offline Maritime

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Teazer he says on the first page it will be 410cc counterbalanced 6 speed 2 stroke. I remembered because it should be awesome.
The GL Rebirth: http://www.dotheton.com/forum/index.php?topic=68337.0
CX500 Low budget Bobber : http://www.dotheton.com/forum/index.php?topic=43617.0
"Beer makes you feel the way you ought to feel without beer" -Henry Lawson
"Beer is proof that God loves us and wants us to be happy." - Thomas Jefferson

Offline BillyGoat4130

  • Posts: 128
Got my front seat mount finally sorted. More complicated than it should have been as I had to make a bracket to basically move the existing bolts in the pan further back so they didn't interfere with the back of the frame and back tank mount.

I also trimmed off several brackets from the subframe, guess I'm moving forward with using it for now :)


Little here, little there. Be ready to order some tires for it before too much longer hopefully.
The question isn't who is going to let me, it's who is going to stop me.

You can't reason with the unreasonable.

Too dumb to quit.

Offline BillyGoat4130

  • Posts: 128
Well I dropped the old girl on the left side and radiator in the shop earlier today...I guess better there than on the road  ::)

Cut some more off the sub frame.




Went to work with the JD2 Model 3 and came up with something like this to cap off the back of it




Hope to have it looking something like this on the bike




Going to leave the space on the back between it and the seat to kind of work as a grab bar type structure I think.
The question isn't who is going to let me, it's who is going to stop me.

You can't reason with the unreasonable.

Too dumb to quit.

Offline Alex jb

  • Posts: 149
Nice.
LED light strip frenched into it?


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Offline BillyGoat4130

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Hadn't thought of that....would be kind a trick to run about a 1/2 end mill around the outside into the tube following the radius and countersink in a red LED strip for L R and Brake lights. Hmmmm
The question isn't who is going to let me, it's who is going to stop me.

You can't reason with the unreasonable.

Too dumb to quit.

Offline 540Nova

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Offline BillyGoat4130

  • Posts: 128
Well thats neat as shit! Really cool and original idea by whoever dreamed that up. I doubt I could make something look quite that clean and good :)
The question isn't who is going to let me, it's who is going to stop me.

You can't reason with the unreasonable.

Too dumb to quit.