project dirt dobber

[orv design and fab]

I was able to work on some thy on the buggy this weekend, dash and tunnel are all but complete, wiring has started and schematic was drawn up to make sure everything has the right locations and circuits are safely made up.

 

[d9marko]

Man ol dobber is looking good! Interior is cool. I like it!

 

[The Luke]

Man this turning out super clean. Good work.

 

[orv design and fab]

Man ol dobber is looking good! Interior is cool. I like it!

Man this turning out super clean. Good work.

Thanks guys, it's been a process, glad to be making the final touches to get this thing on the trail! It's been too long!

 

[orv design and fab]

https://youtu.be/ddVRFn__xm8

 

[84mallcrawl]

I am interested to see the dyno graph on this setup

 

[orv design and fab]

I took it to ivy branch, WV and it did good other than shearing a knuckle stud. I have fixed that with ARP knuckle studs. It rained all day sat and it was wet and muddy, I was impressed with the yoyo stickies traction! The engine had a issue, but I couldn't put my finger on it before the trip, I ran it but with 35* advance ignition timing, cranking wasn't fun when the motor was hot. I checked static timing, no issues there. I checked ignition timing. Good, but had to be super advanced...35* advanced, to run smooth. I brought it home and went through it and found #3 cylinder with low compression. Pulled head to find a valve seat unseated. Got the seat fixed and I threw the head back on. Fired it up a couple days before Harlan trip. It ran great, timing was 18*..i think was the sweet spot. I put the buggy back together and left for harlan. Once again it was a great trip and had a blast. Haven't fixed the front shocks so they were super soft, but the buggy did good. Evenin Got the last day i Got denied on lil jager, we moved on to cream puff and pulled up in second gear and thought that was the gear with enough speed but it wasn't. My brakes were fading and i was trying to hold the buggy up on the hill with letting out the clutch...not the best idea but it worked. I tried a couple times and the rear axle shaft popped. Took it back to camp. Traveled home and pulled the shaft and it was as clean break as you can get. It took out the diff unfortunately. Got it back together and been starting to do paneling for the front end

 

[orv design and fab]

https://youtu.be/YylCoW9TZlM

 

[orv design and fab]

https://youtu.be/qe_rAgzxHqY

 

[orv design and fab]

More from Harlan

 

[orv design and fab]

#1Rear axle shaft broke on Cream Puff.
#2winter treatment... lexan windshield, heated blankets and reversed fan on rear radiator...

Windrock, here we come!

 

[orv design and fab]

Took the buggy to the flats in Marion NC. Had a good time, but had a backfire...trying to pull 3rd to bump out of a hill.

Y'all think I might have too much timing. My dizzy is locked out but my timing is set at 18*advance if I remember correctly. It ripps but sometime seems hard to crank on the trail. So I had been thinking of lowering the timing to 12 and seeing how it drove...what y all think?

Plans are gonna push it in the shop and pull mixer, open it up and see if diaphragm is split. Pull spark plugs and check to see if I have compression on all cylinders, and crank it up...turbo might be damaged too. So I was going to see if I have oil coming out of the turbo to see if seals blew out of turbo as well... once again what y all think?

 

[orv design and fab]

Here is where it backfired